Polyphenylene sulfide by-product waste salt recovery production apparatus and method of use thereof

Abstract

The application discloses a polyphenylene sulfide by-product waste salt recovery production method, which comprises the following steps: S1, weighing raw material dry salt; S2, mixing the raw material dry salt with a binder to obtain salt balls; S3, uniformly mixing the salt balls with a combustion-supporting substance at a volume ratio of 1:1-2; S4, placing a bottom material into a pyrolysis incineration device, then placing the mixture of the salt balls and the auxiliary material on the bottom material, and controlling the pyrolysis incineration device to incinerate; S5, crushing the incinerated product; and S6, purifying and concentrating the crushed product to obtain polyphenylene sulfide by-product salt. The polyphenylene sulfide by-product waste salt recovery production device comprises a pretreatment unit, an incineration unit, a purification unit and a waste gas treatment unit which are sequentially connected. The application can effectively utilize dry waste salt, realize environmental protection and recycling of polyphenylene sulfide by-product salt, and reduce production cost.

Description

Technical Field

[0001] This invention relates to the field of synthesis and production of polyphenylene sulfide (PPS), a chemical product, and specifically to a production device for recovering waste salts from PPS byproducts and its usage method. Background Technology

[0002] The production of polyphenylene sulfide (PPS) generates a large amount of hazardous organic waste salt. Under intense environmental pressure, if this waste salt cannot be recycled, it will affect the sustainable development of enterprises. The solution involves pyrolysis and incineration to remove organic matter, purifying and preparing reusable by-product salt. This by-product salt can be fully utilized in applications such as ion-exchange membranes and soda ash, while the additives can be returned to the polymerization process for reuse, achieving harmless resource recovery. While the existing pyrolysis and incineration process for PPS is theoretically mature, there is currently no method to achieve stable and efficient production using this process, and corresponding production equipment is also lacking. Summary of the Invention

[0003] In view of the above-mentioned deficiencies of the prior art, the purpose of this invention is to provide a production method and production apparatus for recovering polyphenylene sulfide by-product salt, which can effectively utilize dry waste salt and achieve stable and efficient production of polyphenylene sulfide.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] The method for producing polyphenylene sulfide includes the following steps:

[0006] S1. Weigh the raw material, dry salt;

[0007] S2. The raw material dry salt is mixed with a binder and granulated to obtain salt balls; the moisture content of the salt balls is 6%~9%, the particle size of the salt balls is 5~8mm, and the binder is sugar water with a sugar concentration of 10%~15% by mass.

[0008] S3. Mix the salt balls and the combustion-supporting material evenly in a volume ratio of 1:1 to 2.

[0009] S4. Place the base material into the pyrolysis incineration device, then place a mixture of salt balls and auxiliary materials on the base material, and control the temperature of the pyrolysis incineration device to incinerate; the thickness of the base material is 80~120mm, and the particle diameter of the base material is 12~16mm; the base material is obtained by crushing the product after incineration; the total thickness of the base material, salt balls and auxiliary materials is 500~700mm;

[0010] S5. Crush the incinerated products as follows:

[0011] S51. The incinerated product is crushed into blocks with a particle size not exceeding 100mm;

[0012] S52. Crush again into blocks with a particle size not exceeding 30mm;

[0013] S53. Screen out the block material with a particle size of 8-10mm as the base material, and crush the rest into powder with a particle size of no more than 1mm.

[0014] S6. The crushed product is purified and concentrated to obtain polyphenylene sulfide by-product salt.

[0015] Furthermore, in step S4, the ignition temperature of the pyrolysis incineration device is 550~650℃, and the combustion process is a gradual downward spread of combustion. The combustion temperature is controlled by the negative pressure fan drawing air from the trolley in the pyrolysis incineration device. The segmented combustion temperatures are 200~250℃, 200~220℃, 170~200℃, and 140~150℃, respectively, and the combustion time of each stage is not less than 20 minutes.

[0016] A production device for recovering waste salt from polyphenylene sulfide by-products includes a pretreatment unit, an incineration unit, a purification unit, and a waste gas treatment unit connected in sequence to the incineration unit.

[0017] The pretreatment unit includes a dry salt bin, a screw conveyor, a dry salt buffer bin, a dry salt weighing screw, a pelletizing system, a mixer, and a conveyor connected in sequence; the outlet of the conveyor is connected to the inlet of the incineration unit; the mixer is connected to the auxiliary material bin.

[0018] The incineration unit includes a pyrolysis incineration device, a jaw crusher, a screening device, and a pulverizing device connected in sequence; the feed inlet of the pyrolysis incineration device is connected to the discharge outlet of the conveyor; the screening discharge outlet of the screening device is connected to the feed inlet of the pyrolysis incineration device.

[0019] The waste gas treatment unit includes a tar treatment device, a quench tower, an activated carbon adsorption device, an oxidation denitrification device, and a desulfurization device connected in sequence; the quench tower is connected to the exhaust gas of the pyrolysis incineration device.

[0020] Furthermore, the ball-forming system includes:

[0021] The output pipe is set vertically downwards and its upper end is connected to the discharge port of the dry salt buffer tank. The inner wall of the output pipe is coated with polytetrafluoroethylene.

[0022] The spray unit is installed inside the output pipe to spray additives onto the powdered dry salt passing through the output pipe.

[0023] The guiding unit is located inside the output pipe, directly below the spraying unit, and guides the powdered dry salt after spraying.

[0024] The collection unit is located at the bottom of the output pipe, directly below the guide unit, and collects and outputs the salt balls.

[0025] The conveyor channel is located directly below the output pipe, and its lower surface is inclined.

[0026] The adhesion unit is located on the output channel, and its axis is collinear with the output pipe. The salt ball enters the conveying channel through the adhesion unit.

[0027] The disc pelletizer is fed with weighed salt pellets through the inlet.

[0028] The spray unit includes:

[0029] The collection funnel is set inside the output tube, with its axis collinear with the axis of the output tube;

[0030] At least one spray pipe, hollow inside; the head end of the spray pipe is connected to the output pipe, and the tail end is obliquely pointed directly below the discharge port of the collection funnel; the head end of the spray pipe is located outside the collection funnel; the tail end of the spray pipe is provided with a receiving groove; the receiving groove passes through the output pipe through a flexible tube;

[0031] The spray tubes are at least two in number and are arranged in a uniform circumferential arrangement around the axis of the output tube; the head end of the spray tube is hinged to the inner wall of the output tube; the axis of rotation of the spray tube is perpendicular to the axis of the output tube; the spray tube is a Venturi tube.

[0032] The spray pipe is fitted with a sleeve; the sleeve slides on the spray pipe.

[0033] The spray unit also includes:

[0034] The control ring is located on the outside of the collection funnel and is hinged to the sleeve on the spray pipe;

[0035] The control lever has its head end connected to the control ring and its tail end passing through the output tube and located outside the output tube; the output tube has a strip-shaped hole that matches the control lever; the axis of the strip-shaped hole is parallel to the axis of the output tube.

[0036] The outer side of the strip-shaped hole on the output tube is provided with a shielding membrane with elastic deformation capability; the shielding membrane is provided with a through hole for the control rod to pass through; the tail end of the control rod is provided with an external thread; a nut is sleeved on the control rod; the nut engages with the control rod and abuts against the output tube, fixing the control rod and the output tube relative to each other.

[0037] The guiding unit includes at least two guide plates; the guide plates are inclinedly arranged inside the output tube; the head of the guide plate is seamlessly fixed to the inner wall of the output tube, and the axis of the output tube passes through the tail of the guide plate; adjacent guide plates are staggered and tilted.

[0038] The collection unit includes a collection funnel, the axis of which is collinear with the output pipe; the diameter of the collection funnel is not less than 5 times the diameter of the salt ball.

[0039] The adhesion unit includes: a conical tower with a conical outer contour and a rounded top; the bottom diameter of the conical tower is not less than the inner diameter of the output tube; the minimum distance between the lower end of the output tube and the conical surface of the conical tower is not less than twice the diameter of the salt ball;

[0040] The conical surface of the conical tower is a smooth curve that transitions smoothly with the upper plate surface of the conveyor.

[0041] The adhesion unit further includes:

[0042] Several displacement springs are vertically installed at the bottom of the output channel;

[0043] A base plate is mounted on a displacement spring; sealing rubber strips are provided on the end faces of the base plate and the side wall of the output channel; a conical tower is mounted on the base plate; the conical tower is mounted on the base plate;

[0044] The lower end of the output pipe is provided with a concave annular groove; the concave direction of the annular groove is obliquely upward; the annular groove is located below the material collection unit;

[0045] Also includes:

[0046] The air pump has an air inlet connected to the inside of an annular groove and an air outlet connected to the dry salt buffer chamber.

[0047] Furthermore, the pyrolysis incineration device includes: a trolley system and an incineration control system;

[0048] The incineration control system includes:

[0049] The preheating and drying unit is installed upstream of the trolley system to cover the opening on the trolley.

[0050] The ignition unit is mounted on the trolley opening, located downstream of the preheating and drying unit, adjacent to the preheating and drying unit, and ignites the trolley directly below it.

[0051] The segmented incineration unit is attached to the opening of the trolley, located downstream of the ignition unit and adjacent to it.

[0052] The residual gas recovery unit is installed on the outside of the trolley tilting area;

[0053] The exhaust gas treatment unit has an air inlet connected to the residual gas recovery unit, which collects the preheated residual gas again and connects it to the preheating and drying unit.

[0054] The preheating gas circulation unit has an air inlet connected to the trolley directly below the preheating drying unit and an air outlet connected to the segmented combustion unit.

[0055] The ignition gas circulation unit has an air inlet connected to the trolley directly below the ignition unit and an air outlet connected to the staged combustion unit.

[0056] The combustion gas recirculation unit has an air inlet connected to the trolley directly below the upstream section of the combustion unit, and an air outlet connected to the downstream section of the combustion unit and the exhaust gas treatment unit.

[0057] The feeding unit has an inlet connected to the conveyor, and an outlet located directly above the trolley upstream of the trolley facing the preheating and drying unit.

[0058] The micro-separation device for the spherical shell is set in the outlet of the feeding unit to micro-separate the salt balls from the auxiliary materials, with a layer of auxiliary materials floating on the upper surface of the raw material balls;

[0059] The preheating and drying unit includes:

[0060] A preheating hood with an opening facing downwards is mounted on the trolley system. Its lower end face is in contact with the upper end face of the trolley. The top of the hood is equipped with a number of preheating air inlets that are the same number as the number of preheating air inlets on the trolley. The spacing between the preheating air inlets is the same as the length of the trolley.

[0061] The heating temperature sensor is installed inside the preheating hood, vertically downwards and facing the inside of the trolley.

[0062] The ignition unit includes:

[0063] The ignition cover, with its downward-facing hanging buckle, is mounted on the trolley system, and its lower end face is in contact with the upper end face of the trolley.

[0064] The ignition needle is located inside the ignition cover, directly below the interior of the trolley.

[0065] The ignition sensor is located inside the ignition cover.

[0066] A hot gas pipe is connected at its head to the exhaust gas treatment unit and at its end inside the ignition hood. A heating resistance wire is installed inside the hot gas pipe.

[0067] The segmented combustion unit includes:

[0068] The combustion hood, with its opening facing downwards, is mounted on the trolley system, with its lower end face fitting against the upper end face of the trolley. The length of the combustion hood is not less than the length of four trolleys.

[0069] Several combustion temperature sensors are installed inside the combustion hood, and the combustion temperature sensors are arranged at intervals according to the length of the trolley.

[0070] The residual gas recovery unit includes an exhaust hood with an opening on the side to cover the tilted trolley and a discharge port at the bottom.

[0071] The air inlets of the preheating gas circulation unit, the ignition gas circulation unit, and the combustion gas circulation unit are all connected to the bottom of the trolley through a flow guide shroud; the flow guide shroud is funnel-shaped and its width is the same as the width of the trolley.

[0072] The preheating gas circulation unit includes at least one set of preheating gas components, the preheating gas components including:

[0073] The preheating fan's air inlet is connected to the trolley directly below the preheating and drying unit via a preheating temperature sensor, a preheating airflow meter, and a preheating humidity sensor.

[0074] The dehumidification unit has an air inlet connected to the air outlet of the preheating fan, and an air outlet connected to the segmented combustion unit.

[0075] The ignition gas circulation unit includes:

[0076] The ignition fan has an air inlet connected to the trolley directly below the ignition unit via an ignition temperature sensor, an ignition air volume meter, and an ignition humidity sensor, and an air outlet connected to the segmented combustion unit.

[0077] The combustion gas recirculation unit, arranged sequentially according to the trolley's direction of travel, includes at least four sets of combustion gas components, at least two sets of cooling components, and at least one set of return gas components.

[0078] The incineration gas assembly includes:

[0079] The inlet of the combustion blower is connected to the trolley directly below the segmented combustion unit via a combustion temperature sensor and a combustion air volume meter, and the outlet is connected to the top of the downstream trolley adjacent to the combustion blower.

[0080] The cooling component includes:

[0081] The cooling fan has an air inlet connected to the trolley directly opposite the downstream combustion gas assembly via a cooling temperature sensor and a cooling air volume meter, and an air outlet connected to the residual gas recovery unit.

[0082] The return air assembly includes:

[0083] The return gas fan has its inlet connected to the trolley directly opposite the lowest section of the segmented combustion unit via a return gas temperature sensor and a return gas flow meter, and its outlet connected to the top of the trolley directly above the highest section of the combustion gas assembly.

[0084] The return air fan is connected to the top of the trolley at the very top of the combustion gas assembly via a dust collector.

[0085] Furthermore, the feeding unit includes:

[0086] The feed hopper is located directly above the trolley incineration system;

[0087] The discharge chute has its head end connected to the bottom of the feed hopper, and its tail end located directly above the trolley upstream of the trolley facing the drying unit; the discharge chute is inclined.

[0088] The cross-section of the discharge channel is trough-shaped;

[0089] The spherical shell micro-separation device includes:

[0090] The material distribution plate has a head that connects to the bottom plate of the discharge channel, and an upward curve in the middle that keeps the tail away from the bottom of the discharge channel. The material distribution plate has sealing strips on both sides, and the sealing strips are pressed against the inner side of the discharge channel.

[0091] The rotating rod has strip grooves on both sides of the discharge channel; the axis of the strip grooves is perpendicular to the bottom of the discharge channel; both ends of the rotating rod pass through the strip holes, and the middle part is located directly below the material distribution plate;

[0092] Two compression spring mechanisms are respectively installed on both sides of the discharge channel; the lower end of the compression spring mechanism is pressed against the rotating rod.

[0093] The screw plate is located at the end of the rotating rod, on the outside of the discharge channel;

[0094] The top is convex, with the head fixed to the rotating rod and the tail rounded to abut against the lower surface of the middle of the material distribution section;

[0095] A corner block is fitted inside a rotating rod, and the cross-section of the corner block is a regular polygon; one side of the corner block abuts against the bottom of the discharge channel; the material distribution plate is squeezed by the top protrusion under the rotation of the rotating rod, and the middle part deforms to adjust the distance between its tail and the bottom of the discharge channel;

[0096] The upper surface and side of the material distribution plate head are chamfered; the upper surface of the material distribution plate smoothly transitions to the bottom of the discharge channel; the lower surface of the material distribution plate head is provided with a protrusion; the bottom of the discharge channel is provided with a locking groove that matches the protrusion.

[0097] The upper surface of the head of the distribution plate is provided with a groove; a pressure block is provided in the groove; the pressure block is fixedly connected to the discharge channel by screws passing through the pressure block, the distribution plate, and the discharge channel.

[0098] It also includes a remixing device, which has the same structure as the spherical shell micro-separation device and is located upstream of the spherical shell micro-separation device; the end of the distribution plate of the remixing device is comb-shaped; the width of the comb groove at the end of the distribution plate of the remixing device is smaller than the diameter of the raw material ball;

[0099] Also includes:

[0100] The trough-shaped combustion aid material feed channel has its discharge port located downstream of the feeding unit and upstream of the drying unit, directly opposite the trolley.

[0101] The upper part of the discharge control panel is hinged to both sides of the combustion-supporting material inlet channel;

[0102] The adjusting bolts are hinged at both ends to the upper part of the combustion-supporting material inlet channel and the lower part of the discharge control plate, respectively, to control the gap between the discharge control plate and the combustion-supporting material inlet channel.

[0103] Furthermore, the pyrolysis incineration apparatus also includes a feeding system, which comprises:

[0104] The discharge tilting vibrating unit is located on the outside of the trolley discharge tilting mechanism and strikes the trolley that is in the discharge tilting position.

[0105] The cleaning conveyor belt is positioned directly below the incineration trolley;

[0106] The brush cleaning section is located on the upper surface of the cleaning conveyor belt and is in contact with the bottom of the trolley and two opposite sides.

[0107] The receiving box is an upward-opening box located directly below the upper surface of the cleaning conveyor belt. It collects the semi-finished products that fall off the trolley after the brush cleaning section cleans it.

[0108] The vibration unit, located inside the receiving box, strikes the bottom of the trolley directly opposite the receiving box as the cleaning conveyor belt moves back and forth.

[0109] The discharge tilting and vibrating material unit includes:

[0110] The geared motor is vertically mounted, with its shaft perpendicular to the direction of movement of the incineration trolley and located on the outside of the trolley.

[0111] A turntable is mounted on the shaft of a geared motor;

[0112] At least one striking unit, with its head end connected to the turntable and its tail end equipped with a striking body; the striking unit is bent downwards under gravity in its natural state, and the striking body is located on the outside of the trolley; the striking unit is straightened as the turntable rotates, and the striking body strikes the side plate of the trolley as the turntable rotates.

[0113] The striking unit includes a first deformable spring; the two ends of the first deformable spring are respectively connected to a turntable and a striking body; the striking body is made of rubber.

[0114] The cleaning conveyor belt is a chain plate type conveyor belt; the lower surface of the chain plate is provided with a slide rail to support the chain plate; the brush cleaning part is detachably connected to the chain plate; the upper surface of the chain plate is provided with inclined surfaces that slope to both sides.

[0115] The brush cleaning unit includes:

[0116] Two side panel brush cleaning units are set opposite each other on the chain plate, and contact the inner surfaces of the two side panels of the trolley.

[0117] The bottom cleaning brush unit is installed on the chain plate, with its top contacting the bottom of the trolley.

[0118] The side panel brush cleaning unit includes:

[0119] The upright is connected to the chain plate by screws;

[0120] Side brushes are vertically installed on the outer side of the upright plate; the length of the side brushes is not less than the minimum distance between the outer side of the upright and the inner wall of the side plate of the trolley.

[0121] The bottom cleaning unit includes at least two cleaning groups, each cleaning group including at least one bottom cleaning component, the bottom cleaning component including:

[0122] The upright plate is connected to the chain plate by screws, and the width of the upright plate is smaller than the width of the trolley;

[0123] A top brush is vertically installed at the top of the upright plate; the length of the top brush is greater than the minimum distance between the top of the upright plate and the bottom of the trolley.

[0124] The sum of the widths of the bottom cleaning components in each cleaning group is less than the width of the trolley.

[0125] The projection of the bottom cleaning components of the two adjacent cleaning groups completely obscures the cross-section of the trolley.

[0126] The receiving box has notches at both ends for the upper surface of the cleaning conveyor belt to pass through; the bottom of the receiving box has a material collection slope; the bottom of the receiving box has a discharge port.

[0127] The vibration unit includes:

[0128] The bottom block is set on the upper surface of the upper belt surface of the cleaning conveyor belt;

[0129] The rotating rod is rotatably connected to the inner wall of the receiving box at its middle part; the rotating shaft of the rotating rod is perpendicular to the movement direction of the cleaning conveyor belt;

[0130] A positioning spring is connected to the rotating rod so that when the head of the rotating rod is not in contact with the bottom block, its end does not contact the bottom of the trolley.

[0131] A striking block is located at the end of the rotating rod; the striking block strikes the bottom of the trolley as the head of the rotating rod is pushed by the bottom block.

[0132] The end of the rotating rod is connected to the striking block via a second deformable spring; the rotating rod is located downstream of the trolley movement; the rotating rod is located on one side of the brush cleaning section.

[0133] Furthermore, the screening device includes:

[0134] The box is tilted, with a feed inlet at the top of the head;

[0135] Two screening plates with a number of evenly distributed sieve holes are arranged in parallel inside the box, with the plate surfaces parallel to the box body, dividing the inside of the box body into an upper cavity, a middle cavity, and a lower cavity from top to bottom; the diameter of the holes on the screening plate between the upper cavity and the middle cavity is larger than the diameter of the holes on the screening plate between the middle cavity and the lower cavity.

[0136] Three discharge mechanisms are located at the rear of the box and are seamlessly connected to the upper, middle and lower cavities inside the box.

[0137] The vibration mechanism is located at the bottom of the housing;

[0138] The striking mechanism is located at the bottom of the box.

[0139] An elastic support is located at the bottom of the box. When the vibration mechanism is working, the box vibrates on the elastic support.

[0140] The screening plate includes:

[0141] Rectangular frame;

[0142] Several longitudinal beams are set within a rectangular frame;

[0143] Several crossbeams are set within a rectangular frame;

[0144] A screen is installed on the upper surface of the rectangular frame, longitudinal beams, and transverse beams;

[0145] The discharge mechanism includes:

[0146] The collecting nozzle is box-shaped with a triangular outer contour and an opening on one side, facing the upper, middle, or lower cavity. The bottom surface of the collecting nozzle is flush with the lower surface of the upper, middle, or lower cavity. The collecting nozzle is parallel to the screening plate.

[0147] The discharge pipe is located at the lowest point of the collecting nozzle;

[0148] The discharge mechanism also includes:

[0149] A corrugated pipe, the upper end of which is connected to the discharge pipe; the corrugated pipe stretches or shortens as the vibration mechanism operates;

[0150] The receiving pipe is connected to the lower end of the corrugated pipe;

[0151] The vibration mechanism includes:

[0152] Vibration plate, installed on the lower surface of the housing;

[0153] An eccentric rotating unit is mounted on the vibration transmission plate to transmit eccentric vibration to the vibration transmission plate; the angle between the rotating shaft of the eccentric rotating unit and the axis of the housing is an acute angle.

[0154] The contact surface between the vibration plate and the lower surface of the housing is parallel to the axis of the housing; the eccentric rotation unit is located directly below the upper part of the housing;

[0155] The elastic support section includes four support units, respectively disposed on both sides of the upper and lower parts of the housing; the support unit includes:

[0156] Support legs are fixedly connected to the side of the housing;

[0157] The support spring is connected to the support leg at its upper end.

[0158] The upper end of the support column is connected to the lower end of the support spring;

[0159] The spring coefficients of the support springs of the two support units at the top of the box are smaller than the spring coefficients of the support springs of the two support units at the bottom of the box.

[0160] The striking mechanism includes four striking units, which are respectively disposed on the lower surface of the upper and lower parts of the housing;

[0161] The striking unit includes:

[0162] The motor is struck, and two retaining rings are located at the end of the shaft.

[0163] The striking plate has a strip-shaped hole in the middle and is fitted inside the rotating shaft of the striking motor. The width of the strip-shaped hole is smaller than the diameter of the limiting retaining ring. As the striking motor rotates, the striking plate strikes the lower surface of the box body at its end.

[0164] The upper side of the housing has a notch, which faces the lower cavity; a filter screen is installed inside the notch.

[0165] The upper surface of the upper part of the box is provided with an air extraction port, which is connected to the upper cavity.

[0166] The enclosure includes:

[0167] The box has an opening at the top; a sealing ring is provided on the end face of the opening.

[0168] The cover plate is hinged to the box body at one end and closed to the box body at the other end by a snap lock; the cover plate is provided with a feed port.

[0169] Furthermore, the tar treatment device includes:

[0170] The main intake pipe is equipped with the main intake valve.

[0171] The intake bifurcation pipe has its head end connected to the main intake pipe.

[0172] Two tar treatment units are connected to two intake branch pipes, respectively;

[0173] The exhaust branch pipe connects to the tail ends of the two tar treatment units;

[0174] The main exhaust pipe is connected to the exhaust branch pipe and is equipped with an exhaust main valve.

[0175] The tar treatment unit includes:

[0176] The processing pipe is connected to the intake branch pipe via an intake branch valve and to the outlet branch pipe via an outlet branch valve; pressure gauges are installed at both ends of the processing pipe.

[0177] Several ceramic adsorption units are arranged at intervals inside the processing tube, with each ceramic adsorption unit separating the processing tubes on both sides.

[0178] The gas inlet pipe passes through the wall of the treatment pipe at its end and is located at the head of the treatment pipe, upstream of all ceramic adsorption units;

[0179] The gas supply pipe passes through the treatment pipe wall at its end via a gas supply valve and is located at the head of the treatment pipe, at the head of the gas inlet pipe.

[0180] The ceramic adsorption unit includes:

[0181] The front retaining ring is annular with an L-shaped cross-section. Its outer cylindrical surface fits against the inner wall of the treatment tube and is fixed to the treatment tube by screws.

[0182] The rear retaining ring is annular with an L-shaped cross-section. Its outer cylindrical surface fits against the inner wall of the processing tube and is fixed to the processing tube by screws. The side plates of the rear retaining ring and the front retaining ring are spaced apart from each other.

[0183] The ceramic adsorption plate has several through holes on its surface, which are located between the front retaining ring and the rear retaining ring. The two sides of the plate abut against the side plate of the front retaining ring and the side plate of the rear retaining ring, respectively.

[0184] There are four ceramic adsorption units; the four ceramic adsorption units are arranged in the following order according to the gas flow direction of the treatment tube: first adsorption plate, second adsorption plate, third adsorption plate, and fourth adsorption plate; the through holes on the first adsorption plate are larger than the holes on the second adsorption plate; the through holes on the second adsorption plate are larger than the holes on the third adsorption plate; the through holes on the third adsorption plate are larger than the holes on the fourth adsorption plate.

[0185] The first adsorption plate has a first hole at intervals on one side; the first adsorption plate has a second hole at intervals on the other side; the first hole and the second hole are staggered and communicate with each other.

[0186] The inner walls of the first and second holes have rounded corners with the surface of the first adsorption plate; the inner walls of the first and second holes have rounded corners with the bottom; the interior of the second hole has rounded corners with the bottom of the first hole; the structure of the first adsorption plate is the same as that of the first adsorption plate.

[0187] The gas inlet pipe includes:

[0188] The gas manifold is located outside the treatment pipe;

[0189] Several self-igniting gas pipes, one end of each gas pipe is connected to the gas manifold, and the other end passes through the treatment pipe and is located upstream of each ceramic adsorption unit.

[0190] The end of the gas pipe is perpendicular to the ceramic adsorption unit; the distance between the end of the gas pipe and the ceramic adsorption unit is not less than one-quarter of the diameter of the ceramic adsorption unit.

[0191] Also includes:

[0192] air pump;

[0193] The high-pressure reflux pipe has an inlet end connected to the outlet of the air pump and an outlet end connected to the tail of the processing pipe, located upstream of the outlet valve; a reflux valve is installed inside the high-pressure reflux pipe.

[0194] Also includes:

[0195] The backflush manifold has its inlet end connected to the outlet of the air pump via a backflush valve.

[0196] Several backflush tubes, one end of each backflush tube is connected to the backflush manifold, and the other end passes through the treatment tube and is located downstream of each ceramic adsorption unit, with the air outlet pointing towards the ceramic adsorption unit.

[0197] The return pipe is connected at one end to the head end of the processing pipe via a return valve, and at the other end to the outlet branch pipe.

[0198] Two backflush pipes are provided downstream of each ceramic adsorption unit, and the two backflush pipes are symmetrically arranged; the axis of the end of the backflush pipe forms an acute angle with the plate surface of the ceramic adsorption unit.

[0199] Both the intake valve and the exhaust valve are connected to the processing pipe via flexible deformable tubes.

[0200] The bottom of the processing tube is provided with a spring support seat;

[0201] An eccentric vibrator is provided at the bottom of the processing tube.

[0202] The operation method of the polyphenylene sulfide by-product waste salt recovery production device is as follows: When starting production, start the tail gas treatment unit, incineration unit, pretreatment unit and purification unit in sequence at intervals. The start interval is when the material enters the next unit and the unit is ready for production; when stopping production, stop the purification unit, pretreatment unit, incineration unit and tail gas treatment unit in sequence at intervals. The stop interval is when the material of the previous unit has been processed.

[0203] When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are started, each piece of equipment in the unit is started sequentially and at intervals according to the material being processed. The start interval of each piece of equipment is when the material enters the next piece of equipment and the equipment is ready for production. When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are stopped, each piece of equipment in the unit is stopped sequentially and at intervals in reverse according to the material being processed. The stop interval of each piece of equipment is when the material processing of the previous unit is completed.

[0204] When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are shut down in an emergency, if there is a buffer chamber in front of the emergency stop equipment, the equipment after the emergency stop equipment will stop in reverse order according to the material being processed, until the buffer chamber reaches a certain capacity. Then, the equipment in front of the emergency stop equipment will stop in reverse order according to the material being processed.

[0205] Because of the adoption of the above technical solution, the present invention has the following advantages:

[0206] By employing specific production processes and parameters, waste salt can be reused to stably produce polyphenylene sulfide (PPS) byproduct salt and synthesis aids. A production line for recycling PPS byproduct waste salt is constructed using processing equipment corresponding to the processes and parameters, thereby ensuring stable PPS production.

[0207] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0208] The accompanying drawings of this invention are described below:

[0209] Figure 1 This is a front view schematic diagram of the polyphenylene sulfide by-product waste salt recovery production device in the embodiment.

[0210] Figure 2 This is a front view schematic diagram of the ball-making system in the embodiment.

[0211] Figure 3 for Figure 2 Schematic diagram of the AA section structure.

[0212] Figure 4for Figure 3 Enlarged structural diagram at point B.

[0213] Figure 5 for Figure 4 Enlarged structural diagram at point C.

[0214] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure of DD.

[0215] Figure 7 for Figure 6 Schematic diagram of the EE cross-section.

[0216] Figure 8 for Figure 3 Enlarged structural diagram at point F.

[0217] Figure 9 for Figure 3 Enlarged structural diagram at point G in the middle.

[0218] Figure 10 This is a front view schematic diagram of the pyrolysis incineration device (hidden feeding system) in the embodiment.

[0219] Figure 11 for Figure 10 Enlarged structural diagram at point H.

[0220] Figure 12 for Figure 10 Enlarged structural diagram at point I.

[0221] Figure 13 This is a cross-sectional view of the pyrolysis incineration device in the embodiment.

[0222] Figure 14 for Figure 13 Enlarged structural diagram at point J.

[0223] Figure 15 for Figure 14 Enlarged structural diagram at point K.

[0224] Figure 16 for Figure 13 Schematic diagram of the LL section structure.

[0225] Figure 17 for Figure 16 Enlarged structural diagram at point M.

[0226] Figure 18 for Figure 16 Schematic diagram of the NN cross-section structure.

[0227] Figure 19 for Figure 13 Enlarged structural diagram at point P.

[0228] Figure 20 This is a front view schematic diagram of the feeding system in the embodiment.

[0229] Figure 21 This is a partial cross-sectional view of the feeding system in the embodiment.

[0230] Figure 22 for Figure 21 Enlarged structural diagram of point Q.

[0231] Figure 23 for Figure 21 Schematic diagram of the RR section structure.

[0232] Figure 24 for Figure 23 Schematic diagram of the SS cross-section.

[0233] Figure 25 for Figure 23 Schematic diagram of the cross-section of the TT structure.

[0234] Figure 26 This is a front view schematic diagram of the tar treatment device in the embodiment.

[0235] Figure 27 This is a cross-sectional view of the tar treatment unit in the embodiment.

[0236] Figure 28 for Figure 27 A magnified structural diagram of point Q in the diagram.

[0237] Figure 29 This is a schematic diagram of a portion of the first adsorption plate in the embodiment, viewed from the front.

[0238] Figure 30 This is a schematic diagram of a portion of the second adsorption plate in the embodiment, viewed from the front.

[0239] Figure 31 This is a schematic diagram of a portion of the third adsorption plate in the embodiment, viewed from the front.

[0240] Figure 32 This is a schematic diagram of a portion of the fourth adsorption plate in the embodiment, viewed from the front.

[0241] In the picture:

[0242] 11. Dry salt bin; 12. Screw conveyor; 13. Dry salt buffer bin; 14. Dry salt weighing screw; 15. Pelletizing system; 16. Mixer; 17. Conveyor; 18. Auxiliary material bin;

[0243] 15-1. Output pipe; 15-11. Strip hole; 15-12. Annular groove; 15-21. Collection funnel; 15-22. Spray pipe; 15-23. Sleeve; 15-24. Control ring; 15-25. Control rod; 15-26. Nut; 15-27. Shielding film; 15-271. Perforation; 15-31. Guide plate; 15-4. Collection unit; 15-5. Conveying channel; 15-61. Conical tower; 15-62. Displacement spring; 15-63. Base plate; 15-64. Sealing rubber strip; 15-7. Disc pelletizer; 15-9. Air pump.

[0244] 21. Pyrolysis incineration unit; 22. Jaw crusher; 23. Screening unit; 24. Crushing unit;

[0245] 212-1. Trolley; 212-21. Preheating hood; 212-22. Heating temperature sensor; 212-31. Ignition hood; 212-32. Ignition needle; 212-33. Ignition sensor; 212-34. Hot gas pipe; 212-35. Heating resistance wire; 212-41. Combustion hood; 212-42. Combustion temperature sensor; 212-51. Exhaust hood; 212-511. Opening; 212-512. Discharge port; 212-6. Dust collector; 212-71. Preheating fan; 212-72. Preheating temperature sensor; 212-73. Preheating humidity sensor; 212-74. Preheating airflow meter; 212-75. Dehumidifier; 212-81. Ignition fan; 212-82. Ignition temperature sensor; 212-83. Ignition humidity sensor; 212-84. Ignition airflow meter; 212-91. Incineration fan; 212-92. Incineration temperature sensor; 212-93. Incineration airflow meter; 212-94. Cooling fan; 212-95. Cooling temperature sensor; 212-96. Cooling airflow meter; 212-97. Return air fan; 212-98. Return air temperature sensor; 212-99. Return airflow meter; 212-10. Deflector;

[0246] 2122-31. Feed hopper; 2122-32. Discharge channel; 2122-321. Engagement groove; 2122-322. Strip groove; 2122-61. Distribution plate; 2122-611. Sealing strip; 2122-612. Protrusion; 2122-613. Groove; 2122-614. Pressing block; 2122-62. Rotating rod; 2122-63. Tightening plate; 2122-64. Top protrusion; 2122-65. Corner block; 2122-66. Comb groove; 2122-67. Compression spring mechanism; 2122-7. Remixing device; 2122-81. Combustion aid material feed channel; 2122-82. Discharge control panel; 2122-83. Adjusting bolt;

[0247] 213-21. Gear motor; 213-22. Turntable; 213-23. First deformation spring; 213-24. Striking body; 213-3. Cleaning conveyor belt; 213-31. Inclined surface; 213-411. Column; 213-412. Side brush; 213-421. Vertical plate; 213-422. Top brush; 213-5. Receiving box; 213-51. Notch; 213-52. Discharge port; 213-6. Vibration unit; 213-61. Base block; 213-62. Rotating rod; 213-63. Positioning spring; 213-64. Striking block; 213-65. Second deformation spring;

[0248] 23-11. Box body; 23-12. Notch; 23-13. Cover plate; 23-131. Feed inlet; 23-132. Exhaust port; 23-14. Filter screen; 23-15. Hook and loop lock; 23-21. Rectangular frame; 23-22. Longitudinal beam; 23-23. Crossbeam; 23-24. Screen; 23-31. Collector nozzle; 23-32. Discharge pipe; 23-33. Corrugated pipe; 2 3-34. Feeding pipe; 23-41. Vibration plate; 23-42. Eccentric rotation unit; 23-51. Striking motor; 23-52. Limiting ring; 23-53. Striking plate; 23-531. Strip hole; 23-61. Support leg; 23-62. Support spring; 23-63. Support column; 23-71. Upper cavity; 23-72. Middle cavity; 23-73. Lower cavity.

[0249] 3. Purification unit;

[0250] 41. Tar treatment unit; 42. Quenching tower; 43. Activated carbon adsorption unit; 44. Oxidative denitrification unit; 45. Desulfurization unit;

[0251] 41-1. Main intake pipe; 41-11. Main intake valve; 41-2. Intake branch pipe; 41-3. Tar treatment unit; 41-4. Outlet branch pipe; 41-5. Main outlet pipe; 41-51. Main outlet valve; 41-6. Treatment pipe; 41-7. Intake branch valve; 41-8. Outlet branch valve; 41-91. Front retaining ring; 41-92. Rear retaining ring; 41-931. First adsorption plate; 41-932. Second adsorption plate; 41-933. Third adsorption plate; 41-934. Fourth adsorption plate; 41-935. First hole; 41-936. Second hole; 41-101. Gas manifold; 41-102. Gas pipe; 41-200. Gas supply pipe; 41-201. Gas supply valve; 41-202. High-pressure backflow pipe; 41-2021. Backflow valve; 41-203. Backflush manifold; 41-204. Backflush pipe; 41-205. Return pipe; 41-2051. Return valve; 41-206. Flexible deformable pipe; 41-207. Spring support seat; 41-208. Eccentric vibrator; 41-209. Pressure gauge. Detailed Implementation

[0252] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0253] Example

[0254] like Figure 1-32 As shown, the method for producing polyphenylene sulfide includes the following steps:

[0255] S1. Weigh the raw material, dry salt;

[0256] S2. The raw material dry salt is mixed with a binder and granulated to obtain salt balls; the moisture content of the salt balls is 6%~9%, the particle size of the salt balls is 5~8mm, and the binder is sugar water with a sugar concentration of 10%~15% by mass.

[0257] S3. Mix the salt balls and the combustion aid (rice husks) evenly in a volume ratio of 1:1 to 2.

[0258] S4. Place the base material into the pyrolysis incineration device 21, then place a mixture of salt balls and auxiliary materials on the base material, and control the pyrolysis incineration device 21 to heat up and incinerate; the thickness of the base material is 80~120mm, and the particle diameter of the base material is 12~16mm; the base material is obtained by crushing the product after incineration; the total thickness of the base material, salt balls and auxiliary materials is 500~700mm;

[0259] Specifically, the ignition temperature of the pyrolysis incineration device 21 is 550~650℃, and the combustion process is a gradual downward spread of combustion. The combustion temperature is controlled by the negative pressure fan drawing air into the trolley in the pyrolysis incineration device 21. The staged combustion temperatures are 200~250℃, 200~220℃, 170~200℃, and 140~150℃ respectively, and the combustion time of each stage is not less than 20 minutes.

[0260] S5. Crush the incinerated product; specifically, S51. Crush the incinerated product into blocks with a particle size not exceeding 100mm; S52. Crush again into blocks with a particle size not exceeding 30mm; S53. Screen out blocks with a particle size of 8-10mm as base material, and crush the remainder into powder with a particle size not exceeding 1mm.

[0261] S6. The crushed product is purified to obtain polyphenylene sulfide.

[0262] A production device for recovering waste salt from polyphenylene sulfide by-products includes a pretreatment unit, an incineration unit, a purification unit, and a waste gas treatment unit connected in sequence to the incineration unit.

[0263] The pretreatment unit includes a dry salt bin 11, a screw conveyor 12, a dry salt buffer bin 13, a dry salt weighing screw 14, a pelletizing system 15, a mixer 16, and a conveyor 17 connected in sequence; the outlet of the conveyor 17 is connected to the inlet of the incineration unit; the auxiliary material bin 18 is connected to the mixer 16.

[0264] The incineration unit includes a pyrolysis incineration device 21, a jaw crusher 2322, a screening device, and a pulverizing device 24 connected in sequence; the feed inlet of the pyrolysis incineration device 21 is connected to the discharge outlet of the conveyor 17; the screening outlet of the screening device is connected to the feed inlet of the pyrolysis incineration device 21.

[0265] The waste gas treatment unit includes a tar treatment device 41, a quench tower 42, an activated carbon adsorption device 43, an oxidation denitrification device 44, and a desulfurization device 45 connected in sequence; the quench tower 42 is connected to the tail gas of the pyrolysis incineration device 21.

[0266] In this embodiment, the ball-forming system 15 includes:

[0267] The output pipe 15-1 is set vertically downward, and its upper end is connected to the discharge port of the dry salt buffer chamber 1313. The inner wall of the output pipe 15-1 is coated with polytetrafluoroethylene.

[0268] The spraying unit is installed inside the output pipe 15-1 to spray additives onto the powdered dry salt passing through the output pipe 15-1.

[0269] The guiding unit is located inside the output pipe 15-1, directly below the spraying unit, and guides the powdered dry salt after spraying.

[0270] The collection unit 15-4 is located at the lower part of the output pipe 15-1, directly below the guide unit, and concentrates the salt balls for output.

[0271] Conveyor 15-5 is located directly below output pipe 15-1, with its lower surface inclined.

[0272] An adhesive unit is installed on the output channel, with its axis collinear with the output tube 15-1. The salt ball enters the conveying channel 15-5 through the adhesive unit.

[0273] The weighed salt pellets are fed into the feed inlet of the disc pelletizer 15-7.

[0274] The powdered raw material in the dry salt buffer chamber 1313 is discharged through the output pipe 15-1, avoiding direct contact with the external environment and preventing the powdered dry salt from scattering. The entire pre-pelletizing process of the powdered dry salt is completed within the output pipe 15-1, achieving rapid processing of the powdered dry salt while minimizing its scattering during the process. A small amount of atomized additive is sprayed onto the powdered dry salt as a binder, without adding new binder types or altering the properties of the raw material, ensuring no impact on the production of polyphenylene sulfide. During the pre-pelletizing process, the powdered dry salt is guided by a guiding unit to adhere as much as possible, reducing discharge. The remaining small amount of powder is then re-adheded by an adhesion unit, achieving the goal of pelletizing the vast majority of the powdered dry salt.

[0275] In this embodiment, the spray unit includes:

[0276] The collecting funnel 15-21 is set inside the output tube 15-1, and its axis is collinear with the axis of the output tube 15-1;

[0277] Two spray pipes 15-22 are hollow inside; the head end of the spray pipe 15-22 is connected to the output pipe 15-1, and the tail end is obliquely pointed directly below the discharge port of the collection funnel 15-21; the head end of the spray pipe 15-22 is located outside the collection funnel 15-21; the end of the spray pipe 15-22 is provided with a receiving groove; the receiving groove passes through the output pipe 15-1 through a flexible tube.

[0278] The collecting funnel 15-21 concentrates the powdered dry salt, allowing the additive sprayed from the spray pipe 15-22 to fully contact the powdered dry salt.

[0279] In this embodiment, the spray pipes 15-22 are arranged in a uniform circumferential arrangement around the axis of the output pipe 15-1; the head end of the spray pipe 15-22 is hinged to the inner wall of the output pipe 15-1; the rotation axis of the spray pipe 15-22 is perpendicular to the axis of the output pipe 15-1; the spray pipe 15-22 is a Venturi tube.

[0280] The spray pipe 15-22 is covered by a sleeve 15-23; the sleeve 15-23 slides on the spray pipe 15-22.

[0281] The spray unit also includes:

[0282] The control ring 15-24 is located on the outside of the collection funnel 15-21 and is hinged to the sleeve 15-23 on the spray pipe 15-22.

[0283] The control lever 15-25 has its head end connected to the control ring 15-24 and its tail end passing through the output tube 15-1, located outside the output tube 15-1; the output tube 15-1 is provided with a strip-shaped hole 15-11 that matches the control lever 15-25; the axis of the strip-shaped hole 15-11 is parallel to the axis of the output tube 15-1.

[0284] The nozzle orientation of the spray pipe 15-22 can be adjusted by changing the height of the control ring 15-24. At the same time, changing the height of the control ring 15-24 allows the sleeve 15-23 to slide on the spray pipe 15-22, thereby scraping off the powdered dry salt adhering to the surface of the spray pipe 15-22.

[0285] The control levers 15-25 are fixed with screws.

[0286] In this embodiment, an elastically deformable shielding membrane 15-27 is provided on the outer side of the strip hole 15-11 on the output tube 15-1; the shielding membrane 15-27 is provided with a through hole 15-271 for the control rod 15-25 to pass through; the tail end of the control rod 15-25 is provided with an external thread; a nut 15-26 is sleeved on the control rod 15-25; the nut 15-26 engages with the control rod 15-25 and abuts against the output tube 15-1, thereby fixing the control rod 15-25 and the output tube 15-1 relative to each other.

[0287] The shielding membrane 15-27 is made of rubber, which can both seal the output pipe 15-1 and allow the control lever 15-25 to move.

[0288] In this embodiment, the guiding unit includes two guide plates 15-31; the guide plates 15-31 are inclinedly arranged inside the output tube 15-1; the head of the guide plate 15-31 is seamlessly fixed to the inner wall of the output tube 15-1, and the axis of the output tube 15-1 passes through the tail of the guide plate 15-31; adjacent guide plates 15-31 are staggered and tilted.

[0289] In this embodiment, the collecting unit 15-4 includes a collecting funnel, the axis of which is collinear with the output pipe 15-1; the diameter of the collecting funnel is not less than 5 times the diameter of the salt ball.

[0290] In this embodiment, the adhesion unit includes: a conical tower 15-61 with a conical outer contour and rounded corners at the top; the bottom diameter of the conical tower 15-61 is not less than the inner diameter of the output tube 15-1; the minimum distance between the lower end of the output tube 15-1 and the conical surface of the conical tower 15-61 is not less than twice the diameter of the salt ball.

[0291] In this embodiment, the conical surface of the conical tower 15-61 is a smooth curve, which smoothly transitions with the upper plate surface of the conveyor channel 15-5.

[0292] In this embodiment, the adhesion unit further includes:

[0293] Several displacement springs 15-62 are vertically installed at the bottom of the output channel;

[0294] The base plate 15-63 is mounted on the displacement spring 15-62; the end faces of the base plate 15-63 and the side wall of the output channel are both provided with sealing rubber strips 15-64; the conical tower 15-61 is mounted on the base plate 15-63; the conical tower 15-61 is mounted on the base plate 15-63.

[0295] When salt balls accumulate at the bottom of the output tube 15-1 and get stuck together, preventing them from entering the output channel smoothly, the gap between the bottom of the output tube 15-1 and the output channel is widened by the change in gravity, thus achieving the purpose of automatic unblocking.

[0296] In this embodiment, the lower end of the output pipe 15-1 is provided with a concave annular groove 15-12; the concave direction of the annular groove 15-12 is obliquely upward; the annular groove 15-12 is located below the collecting unit 15-4;

[0297] Also includes:

[0298] The air pump 15-9 has an air inlet that is connected to the inside of the annular groove 15-12, and an air outlet that is connected to the inner cavity of the dry salt buffer chamber 1313.

[0299] After the powdered dry salt is discharged from the output pipe 15-1, although it comes into contact with the mist-like additive and becomes sticky, it can stick to the powdered dry salt suspended in the output pipe 15-1. However, most of the powdered dry salt will not directly contact the additive. At this time, most of it will fall onto the guide plate 15-31, and a small part will fall directly onto the conical tower 15-61. Although the powdered dry salt on the guide plate 15-31 and the conical tower 15-61 will be picked up by the rolling of the small ball, some of it will fall into the air in the output pipe 15-1. If it is not collected, it will be discharged from the end of the output pipe 15-1.

[0300] This problem can be solved by using an air pump 15-9.

[0301] In this embodiment, the multi-stage pelletizing system 15 for polyphenylene sulfide raw materials works as follows: the raw material powder output pipe 15-1 falls downwards.

[0302] During its fall, the powdered dry salt is collected by the collection funnel 15-21 and then falls again. Some of the powdered dry salt comes into contact with the additive sprayed from the spray pipe 15-22, forming sticky small balls. The remaining powdered dry salt falls onto the guide plate 15-31 and the conical tower 15-61. As the sticky small balls roll off the guide plate 15-31, they pick up some of the powder on the guide plate 15-31. Finally, they fall onto the conical tower 15-61, picking up the powder on the conical tower 15-61 as well. The remaining floating powdered dry salt is drawn off the output pipe 15-1 by the air pump 15-9 and re-enters the dry salt buffer chamber 1313.

[0303] After passing through conveyor 15-5, the raw materials for forming small balls are weighed and then enter the disc pelletizing machine 15-7, where they are mixed with additives in a quantitative ratio to form larger small balls, and finally the finished salt balls are obtained.

[0304] In this embodiment, the pyrolysis incineration device 21 includes: a trolley system and an incineration control system;

[0305] The incineration control system includes:

[0306] The preheating and drying unit is fastened to the upstream of the trolley 212-11 system, covering the opening 212-511 on the trolley 212-11.

[0307] The ignition unit is mounted on the opening 212-511 of the trolley 212-11, located downstream of the preheating and drying unit and adjacent to the preheating and drying unit, and ignites the trolley 212-11 directly below it.

[0308] The segmented incineration unit is installed on the opening 212-511 of the trolley 212-11, located downstream of the ignition unit and adjacent to the ignition unit.

[0309] The residual gas recovery unit is installed on the outside of the tilting area of ​​trolley 212-11;

[0310] The exhaust gas treatment unit (not shown in the figure) has an air inlet connected to the residual gas recovery unit, which collects the preheated residual gas again and connects it to the preheating and drying unit.

[0311] The preheating gas circulation unit has an air inlet connected to the trolley 212-11 directly below the preheating drying unit, and an air outlet connected to the segmented combustion unit.

[0312] The ignition gas circulation unit has an air inlet connected to the trolley 212-11 directly below the ignition unit, and an air outlet connected to the segmented combustion unit.

[0313] The combustion gas recirculation unit has its air inlet connected to the trolley 212-11 directly below the upstream section of the combustion unit, and its air outlet connected to the downstream section of the combustion unit and the exhaust gas treatment unit.

[0314] The feeding unit has its inlet connected to the conveyor 17, and its outlet is located directly above the trolley upstream of the trolley facing the preheating and drying unit.

[0315] The micro-separation device for the spherical shell is set in the outlet of the feeding unit to micro-separate the salt balls from the auxiliary materials, with a layer of auxiliary materials floating on the upper surface of the raw material balls;

[0316] By utilizing the residual heat of the exhaust gas to preheat the salt balls and auxiliary materials, the heat of the exhaust gas is fully utilized, and the raw materials for incineration are pretreated, which speeds up the production efficiency. The preheated gas is then used for staged combustion, ensuring that the heat is fully utilized.

[0317] The heat generated by the staged combustion unit is collected by the exhaust gas treatment unit, and part of it is reinjected into the staged incineration unit to achieve full utilization.

[0318] By using the gas discharged from the segmented incineration unit to create negative pressure on the entire system, the air content drawn into the system from the outside can be controlled, thereby controlling the oxygen content during the incineration process, achieving complete combustion, and reducing harmful substances in the exhaust gas.

[0319] In this embodiment, the preheating and drying unit includes:

[0320] The preheating cover 212-21, with its opening 212-511 facing downwards, is suspended on the trolley 212-11 system. Its lower end face is in contact with the upper end face of the trolley 212-11. The top is provided with a number of preheating air inlet pipes that are directly opposite the trolley 212-11. The spacing of the preheating air inlet pipes is the same as the length of the trolley 212-11.

[0321] The heating temperature sensor 212-22 is installed inside the preheating cover 212-21, facing vertically downwards towards the inside of the trolley 212-11.

[0322] The preheating hood 212-21 can enclose the outside of the trolley 212-11 as much as possible to retain the preheating gas.

[0323] In this embodiment, the ignition unit includes:

[0324] The ignition cover 212-31, with its downward-facing opening 212-511, is mounted on the trolley 212-11 system, with its lower end face fitting against the upper end face of the trolley 212-11.

[0325] The ignition needle 212-32 is located inside the ignition cover 212-31, directly facing the interior of the trolley 212-11 directly below it;

[0326] Ignition sensor 212-33 is located inside ignition cover 212-31;

[0327] The hot gas pipe 212-34 has its head end connected to the exhaust gas treatment unit and its end end located inside the ignition cover 212-31. A heating resistance wire 212-35 is provided inside the hot gas pipe 212-34.

[0328] The hot air pipe 212-34 can continue to heat the raw materials inside the trolley 212-11, or after the raw materials have dried, when the temperature of the hot air discharged from the hot air pipe 212-34 is sufficient, it can achieve natural ignition without the need for the ignition needle 212-32.

[0329] In this embodiment, the segmented combustion unit includes:

[0330] The combustion hood 212-41, with its opening 212-511 facing downwards, is suspended on the trolley 212-11 system, with its lower end face fitting against the upper end face of the trolley 212-11. The length of the combustion hood 212-41 is not less than the length of four trolleys 212-11.

[0331] Several combustion temperature sensors 212-42 are installed inside the combustion hood 212-41, and the combustion temperature sensors 212-42 are arranged at intervals according to the length of the trolley 212-11.

[0332] In this embodiment, the residual gas recovery unit includes an exhaust hood 212-51, with an opening 212-511 on the side to cover the tilting area of ​​the trolley 212-11, and a discharge port 212-512 at the bottom.

[0333] In this embodiment, the air inlet of the preheating gas circulation unit, the air inlet of the ignition gas circulation unit, and the air inlet of the combustion gas circulation unit are all connected to the lower part of the trolley 212-11 through the guide shroud 212-10; the guide shroud 212-10 is funnel-shaped, and the width of the guide shroud 212-10 is the same as the width of the trolley 212-11.

[0334] The fairing 212-10 can collect airflow in specific areas as much as possible, achieving segmented control.

[0335] In this embodiment, the preheating gas circulation unit includes at least one set of preheating gas components, the preheating gas components including:

[0336] The air inlet of the preheating fan 212-71 is connected to the trolley 212-11 directly below the preheating drying unit through the preheating temperature sensor 212-72, the preheating air volume meter 212-74, and the preheating humidity sensor 212-73.

[0337] The dehumidification unit has an air inlet connected to the air outlet of the preheating fan 212-71, and an air outlet connected to the segmented combustion unit.

[0338] Dehumidification can treat the high-temperature gas with high humidity generated during preheating, preventing the high-humidity gas from entering the subsequent staged incineration process.

[0339] In this embodiment, the ignition gas circulation unit includes:

[0340] The ignition fan 212-81 has its air inlet connected to the trolley 212-11 directly below the ignition unit via the ignition temperature sensor 212-82, the ignition air volume meter 212-84, and the ignition humidity sensor 212-83. Its air outlet is connected to the segmented combustion unit.

[0341] In this embodiment, the combustion gas recirculation unit includes, in sequence according to the running direction of the trolley 212-11, at least four sets of combustion gas components, at least two sets of cooling components, and at least one set of return gas components.

[0342] The incineration gas assembly includes:

[0343] The inlet of the incineration blower 212-91 is connected to the trolley 212-11 directly below the segmented incineration unit through the incineration temperature sensor 212-92 and the incineration air volume meter 212-93, and the outlet is connected to the top of the downstream trolley 212-11 adjacent to the incineration blower 212-91.

[0344] The cooling component includes:

[0345] The cooling fan 212-94 has its air inlet connected to the trolley 212-11 directly opposite the downstream combustion gas assembly via a cooling temperature sensor 212-95 and a cooling air volume meter 212-96, and its air outlet connected to the residual gas recovery unit.

[0346] The return air assembly includes:

[0347] The return air fan 212-97 has its inlet connected to the trolley 212-11 directly opposite the downstream of the segmented combustion unit via a return air temperature sensor 212-98 and a return air volume meter 212-99. Its outlet is connected directly above the trolley 212-11 directly upstream of the combustion gas assembly.

[0348] The combustion gas assembly enables segmented temperature control combustion. The cooling fan 212-94 lowers the temperature inside the trolley 212-11 after combustion. The return gas fan 212-97 creates negative pressure at the end of the trolley 212-11 system to prevent internal gas from escaping.

[0349] In this embodiment, the return air fan 212-97 is connected to the top of the upstream trolley 212-11 of the combustion gas assembly via the dust collector 212-6.

[0350] In this embodiment, the polyphenylene sulfide production incineration control system 22212 is used as follows: the raw material to be incinerated is placed into the trolley 212-11, and the trolley 212-11 rotates clockwise. When the raw material enters the preheating hood 212-21, after the exhaust gas treatment unit removes harmful gases or through heat exchange, relatively clean high-temperature gas or heated air is injected into the preheating hood 212-21 to heat and dry the raw material in the preheating hood 212-21; at the same time, the preheating fan 212-71 recovers the preheated hot air. Heating temperature sensor 212-22 monitors the temperature of the raw material in real time. If the raw material temperature is low, the power of preheating fan 212-71 can be increased to inject more high-temperature gas into preheating hood 212-21 to heat the raw material. Similarly, if the temperature detected by preheating temperature sensor 212-72 is low, the power of preheating fan 212-71 can also be increased. If the humidity detected by preheating humidity sensor 212-73 is high, the power of preheating fan 212-71 can also be increased to dry the raw material more quickly.

[0351] The raw materials continue to flow into the ignition hood 212-31. If the gas temperature in the hot gas pipe 212-34 reaches the ignition point of the raw materials, combustion begins. If not, ignition is achieved using the ignition needle 212-32. The hot gas in the hot gas pipe 212-34 originates from the same source as the high-temperature gas injected into the preheating hood 212-21. Simultaneously, the ignition fan 212-81 recovers the air directly below the ignition hood 212-31, and after dehumidification, it is combined with the air from the preheating fan 212-71 and placed into the segmented combustion hood. The ignition sensor 212-33 uses an infrared thermal radiation sensor to detect successful ignition. The ignition temperature sensor 212-82 detects the combustion status after ignition, and the ignition humidity sensor 212-83 detects the moisture content of the raw materials.

[0352] After the feedstock is ignited and enters the segmented combustion hood 212-41, it is first controlled by the combustion blower 212-91. The combustion blower 212-91 uses the combustion temperature sensor 212-92 to determine the temperature after combustion, while the combustion temperature sensor 212-42 monitors the temperature of the feedstock during combustion. The feedstock combustion employs a process of high-temperature combustion followed by a decrease in temperature. Therefore, the feedstock temperature can be detected by the combustion temperature sensor 212-92 and the combustion temperature sensor 212-42, and the oxygen supply can be controlled by adjusting the power of the combustion blower 212-91, thereby controlling the degree of combustion and ultimately achieving control over the feedstock combustion temperature.

[0353] After combustion, the raw materials enter the cooling zone, where the cooling rate is controlled by the cooling fan 212-94. Finally, the temperature of the semi-finished product is controlled by the return air fan and the cooling fan 212-94 working together to control the temperature of the final poured product.

[0354] In this embodiment, the feeding unit includes:

[0355] The feed hopper 2122-31 is located directly above the trolley incineration system 1;

[0356] The discharge channel 2122-32 has its head end connected to the bottom of the feed hopper 2122-31, and its tail end located directly above the trolley 212-1 upstream of the drying unit; the discharge channel 2122-32 is set at an inclination.

[0357] In this embodiment, the cross-section of the discharge channel 2122-32 is groove-shaped;

[0358] The spherical shell micro-separation device includes:

[0359] 2122-61, the head is connected to the bottom plate of the discharge channel 2122-32, and the middle is curved upward so that the tail is far away from the bottom of the discharge channel 2122-32; the two sides of the distribution plate are provided with sealing strips 2122-611, and the sealing strips 2122-611 are pressed against the inner side of the discharge channel 2122-32.

[0360] The rotating rod 2122-62 has strip grooves 2122-322 on both sides of the discharge channel 2122-32; the axis of the strip grooves 2122-322 is perpendicular to the bottom of the discharge channel 2122-32; the two ends of the rotating rod 2122-62 pass through the strip holes, and the middle part is located directly below 2122-61;

[0361] Two compression spring mechanisms 2122-67 are respectively arranged on both sides of the discharge channel 2122-32; the lower end of the compression spring mechanism 2122-67 is pressed against the rotating rod 2122-62;

[0362] Twisting plate 2122-63 is located at the end of rotating rod 2122-62, outside of discharge channel 2122-32;

[0363] The top protrusion 2122-64 is fixed at the head end to the rotating rod 2122-62, and the tail end is rounded to abut against the lower surface of the middle part of the material distribution.

[0364] Corner block 2122-65 is fitted inside rotating rod 2122-62. The cross-section of corner block 2122-65 is a regular polygon. One side of corner block 2122-65 abuts against the bottom of discharge channel 2122-32. Under the rotation of rotating rod 2122-62, the material distribution plate is squeezed by top protrusion 2122-64, and the middle part deforms to adjust the distance between its tail and the bottom of the discharge.

[0365] By rotating the screw plate 2122-63, the rotating rod 2122-62 is driven to rotate, causing the top protrusion 2122-64 on the rotating rod 2122-62 to rotate around the axis of the rotating rod 2122-62. This changes the height between the tail of the material distribution plate 2122-61 and the discharge channel 2122-32, thereby adjusting the height at which the raw material balls and combustion-supporting substances are thrown up on the material distribution plate 2122-61 and controlling the degree of separation between the raw material balls and the combustion-supporting substances.

[0366] In this embodiment, the upper surface and side of the head of the material distribution plate 2122-61 are chamfered; the upper surface of the material distribution plate smoothly transitions to the bottom of the discharge channel 2122-32; the lower surface of the head of the material distribution plate is provided with a protrusion 2122-612; the bottom of the discharge channel 2122-32 is provided with a locking groove 2122-321 that matches the protrusion 2122-612;

[0367] The upper surface of the head of the material distribution plate 2122-61 is provided with a groove 2122-613; a pressure block 2122-614 is provided in the groove 2122-613; the pressure block 2122-614 is fixedly connected to the material distribution plate 2122-61 and the discharge channel 2122-32 by screws passing through the pressure block 2122-614.

[0368] The pressure block 2122-614 allows for easy disassembly of the material distribution plate 2122-61, while the protrusion 2122-612 and the locking groove 2122-321 ensure that the head of the material distribution plate 2122-61 will not tilt upwards.

[0369] In this embodiment, a remixing device 2122-7 is also included, which has the same structure as the spherical shell micro-separation device and is located upstream of the spherical shell micro-separation device; the end of the material distribution plate 2122-61 of the remixing device 2122-7 is comb-shaped; the width of the comb groove 2122-66 at the end of the material distribution plate 2122-61 of the remixing device 2122-7 is smaller than the diameter of the raw material ball.

[0370] After the raw material pellets and combustion-supporting material are mixed in a mixer, they are placed into the feed hopper 2122-31. This process generally uses a belt conveyor. During the belt conveyor process and as the raw material pellets enter the feed hopper 2122-31, some separation will occur between the raw material pellets and the combustion-supporting material, and the degree of separation is unstable. At this time, the remixing device 2122-7 restores the combustion-supporting material and raw material pellets to a uniform mixing degree as much as possible. After passing through the pellet shell micro-separation device, a raw material for incineration with a stable degree of separation between the combustion-supporting material and the raw material pellets can be obtained.

[0371] This embodiment also includes:

[0372] The trough-shaped combustion-supporting material inlet 2122-81, which is connected to the auxiliary material silo 18, has its outlet located downstream of the feeding unit and upstream of the drying unit, directly opposite the trolley 212-1.

[0373] The upper part of the discharge control plate 2122-82 is hinged to both sides of the combustion-supporting material inlet channel 2122-81;

[0374] Adjusting bolt 2122-83 is hinged at both ends to the upper part of combustion material inlet channel 2122-81 and the lower part of discharge control plate 2122-82, respectively, to control the gap between discharge control plate 2122-82 and combustion material inlet channel 2122-81.

[0375] If the thickness of the combustion-supporting material on the raw material ball after passing through the spherical shell micro-separation device still does not achieve the effect of self-ignition and self-propagation, the combustion-supporting material is sprinkled on the surface of the raw material in the trolley 212-1 to make the thickness of the combustion-supporting material meet the requirements.

[0376] The polyphenylene sulfide production incineration ignition system in this embodiment works as follows: First, a mixture of combustion-supporting material and raw material balls is sprinkled into the trolley 212-1 through the discharge channel 2122-32. After the mixture is uniformly mixed by the remixing device 2122-7, it passes through the ball shell micro-separation device, so that the combustion-supporting material partially floats on the upper surface when it is in the discharge channel 212-1. Finally, when it is sprinkled into the trolley 212-1, a layer of combustion-supporting material naturally floats on the surface of the trolley 212-1.

[0377] After the trolley 212-1 enters the drying unit and undergoes drying to remove most of the moisture, it enters the ignition unit. If the temperature of the hot gas entering the ignition unit reaches the ignition point of the oxidizing agent, the oxidizing agent is ignited. If the temperature of the hot gas entering the ignition unit does not reach the ignition point of the oxidizing agent, the temperature of the hot gas can be increased by activating the heating resistance wire 212-35. If the temperature still does not reach the required level after activating the heating resistance wire 212-35, natural gas is injected into the ignition needle 212-32 and ignited to use the natural gas to ignite the oxidizing agent. The specific method selected is determined by the ignition sensor 212-33.

[0378] The ignited raw materials then enter the subsequent incineration stage, completing the ignition process.

[0379] In this embodiment, the feeding system includes:

[0380] The discharge tilting vibrating unit is located on the outside of the discharge tilting trolley 212-1 and is used to strike the discharge tilting trolley 212-1.

[0381] The cleaning conveyor belt 213-3 is located directly below the incineration trolley 212-1;

[0382] The brush cleaning section is located on the upper surface of the cleaning conveyor belt 213-3 and is in contact with the bottom and two opposite sides of the trolley 212-1.

[0383] The receiving box 213-5 is an upward-opening box-shaped container located directly below the upper surface of the cleaning conveyor belt 213-3. It receives the semi-finished products that fall off the trolley 212-1 after the brush cleaning section cleans it.

[0384] The vibration unit 213-6 is installed inside the receiving box 213-5. As the cleaning conveyor belt 213-3 moves back and forth, it strikes the bottom of the trolley 212-1 directly opposite the receiving box 213-5.

[0385] When trolley 212-1 tilts, the discharge tilting vibration unit taps trolley 212-1, allowing the semi-finished products inside trolley 212-1 to fall into the discharge hopper more quickly and smoothly. This minimizes the possibility of large pieces of semi-finished products sticking to trolley 212-1 and potentially burning again or falling outside the hopper. During the cyclical movement of trolley 212-1, the brush cleaning unit separates strongly adhered semi-finished products or those that would fall off with slight vibration from trolley 212-1 in advance, collecting them through receiving box 213-5 to prevent semi-finished products from falling to the ground, causing pollution, and reducing the output of semi-finished products. The cleaning conveyor belt 213-3 controls the cleaning intensity of the brush cleaning unit on trolley 212-1, cleaning it as thoroughly as possible; simultaneously, the vibration unit knocks off any semi-finished products that are slightly adhered to trolley 212-1.

[0386] In this embodiment, the discharge tilting vibrating unit includes:

[0387] The geared motor 213-21 is vertically mounted, with its shaft perpendicular to the direction of movement of the incineration trolley 212-1 and located on the outside of the trolley 212-1.

[0388] Turntable 213-22 is mounted on the shaft of geared motor 213-21;

[0389] Two striking units are connected at their head ends to turntable 213-22 and at their tail ends to striking bodies 213-24. In their natural state, the striking units are bent downwards by gravity, and the striking bodies 213-24 are located outside the trolley 212-1. The striking units are straightened as the turntable 213-22 rotates, and the striking bodies 213-24 strike the side plates of the trolley 212-1 as the turntable 213-22 rotates.

[0390] In this embodiment, the striking unit includes a first deformable spring 213-23; the two ends of the first deformable spring 213-23 are respectively connected to the turntable 213-22 and the striking body 213-24; the striking body 213-24 is made of rubber.

[0391] The first deformable spring 213-23 is made of a relatively soft material, and its natural state is like... Figure 3 As shown.

[0392] In this embodiment, the cleaning conveyor belt 213-3 is a chain plate type conveyor belt; the lower surface of the chain plate is provided with a slide rail to support the chain plate; the brush cleaning part is detachably connected to the chain plate; the upper surface of the chain plate is provided with inclined surfaces 213-31 that slope to both sides.

[0393] The inclined surface 213-31 can guide the semi-finished product being cleaned to slide into the receiving box 213-5.

[0394] In this embodiment, the brush cleaning unit includes:

[0395] Two side plate brush cleaning units are set opposite each other on the chain plate and contact the inner surfaces of the two side plates of the trolley 212-1.

[0396] The bottom cleaning unit is mounted on the chain plate, with its top end in contact with the bottom of the trolley 212-1.

[0397] In this embodiment, the side panel brush cleaning unit includes:

[0398] The uprights 213-411 are connected to the chain plates by screws;

[0399] Side brushes 213-412 are vertically arranged on the outer side of the upright plate 213-421; the length of the side brushes 213-412 is not less than the minimum distance between the outer side of the upright plate 213-411 and the inner wall of the side plate of the trolley 212-1.

[0400] In this embodiment, the bottom cleaning brush unit includes at least two cleaning groups, each cleaning group including at least one bottom cleaning component, the bottom cleaning component including:

[0401] The upright plate 213-421 is connected to the chain plate by screws, and the width of the upright plate 213-421 is smaller than the width of the trolley 212-1;

[0402] The top brush 213-422 is vertically set at the top of the upright plate 213-421; the length of the top brush 213-422 is greater than the minimum distance between the top of the upright plate 213-421 and the bottom of the trolley 212-1.

[0403] The sum of the widths of the bottom cleaning components in each cleaning group is less than the width of trolley 212-1;

[0404] The projections of the bottom cleaning components of the two adjacent cleaning groups completely obscure the cross section of trolley 212-1.

[0405] The bottom cleaning unit adopts two sets of fully shielded settings, which can improve the cleaning of the bottom of the tank while effectively reducing the wear and tear on the brushes.

[0406] In this embodiment, the receiving box 213-5 has notches 213-51 at both ends, and the notches 213-51 allow the upper surface of the cleaning conveyor belt 213-3 to pass through; the bottom of the receiving box 213-5 has a material collection inclination; and the bottom of the receiving box 213-5 has a discharge port 213-52.

[0407] The receiving box 213-5 should catch any product that may fall and prevent it from being discharged under external force.

[0408] In this embodiment, the vibration unit 213-6 includes:

[0409] The bottom block 213-61 is set on the upper surface of the upper belt surface of the cleaning conveyor belt 213-3;

[0410] The rotating rod 213-62 is rotatably connected to the inner wall of the receiving box 213-5 at its middle part; the rotating shaft of the rotating rod 213-62 is perpendicular to the movement direction of the cleaning conveyor belt 213-3;

[0411] The positioning spring 213-63 is connected to the rotating rod 213-62, so that when the head of the rotating rod 213-62 is not in contact with the bottom block 213-61, its end is not in contact with the bottom of the trolley 212-1.

[0412] A striking block 213-64 is located at the end of the rotating rod 213-62; the striking block 213-64 strikes the bottom of the trolley 212-1 as the head of the rotating rod 213-62 is pushed by the bottom block 213-61.

[0413] The end of the rotating rod 213-62 is connected to the striking block 213-64 via a second deformable spring 213-65; the rotating rod 213-62 is located downstream of the trolley 212-1; the rotating rod 213-62 is located on one side of the brush cleaning section.

[0414] The leakage cleaning device of the incineration trolley 212-1 in this embodiment is used as follows: Figure 1 As shown, after incineration, the trolley 212-1 tilts at the right end, and the semi-finished products inside fall under gravity. When large, unbonded pieces of semi-finished products reach the inner wall of the trolley 212-1, the reduction motor 213-21 is activated, driving the turntable 213-22 to rotate. This stretches the first deformation spring 213-23, and simultaneously, the striking body 213-24 begins to rise. During rotation, it impacts the two opposite side plates of the trolley 212-1, loosening the large pieces of semi-finished products inside. At the same time, the first deformation spring 213-23 can dissipate the impact force when the striking body 213-24 collides with the trolley 212-1. Furthermore, when interfering with the trolley 212-1, it can deform, allowing the striking body 213-24 to rotate smoothly around the turntable 213-22.

[0415] The trolley 212-1, which has been struck, will generally not drop the semi-finished products in a short period of time. However, as it continues to move clockwise, the shaking will cause some of the loosely adhered semi-finished products to fall off. At this time, the trolley 212-1 will be directly above the receiving box 213-5.

[0416] The cleaning conveyor belt 213-3 is started to reciprocate slightly. At this time, the trolley 212-1 moves relative to the side brushes 213-412 and the top brush 213-422, brushing away the semi-finished products that are not firmly bonded to the inner wall and bottom of the trolley 212-1. Simultaneously, during the slight reciprocating motion of the cleaning conveyor belt 213-3, the bottom block 213-61 impacts the head end of the rotating rod 213-62, causing the rotating rod 213-62 to rotate. This causes the striking block 213-64 to strike the bottom of the trolley 212-1, further separating the slightly loose semi-finished products from the trolley 212-1. At the same time, the second deformation spring 213-65 can effectively prevent the striking block 213-64 from getting stuck between the bottom of the trolley 212-1. The positioning spring 213-63 can reset the rotating rod 213-62 when the cleaning conveyor belt 213-3 moves counterclockwise, that is, when the bottom block 213-61 separates from the rotating rod 213-62.

[0417] In this embodiment, the screening device includes: a box body, which is inclined and has a feed inlet 23-131 at the upper part of the head end;

[0418] Two screening plates with a number of evenly distributed sieve holes are arranged in parallel inside the box, with the plate surfaces parallel to the box body. The inside of the box is divided into an upper cavity 23-71, a middle cavity 23-72, and a lower cavity 23-73 from top to bottom. The diameter of the holes on the screening plate between the upper cavity 23-71 and the middle cavity 23-72 is larger than the diameter of the holes on the screening plate between the middle cavity 23-72 and the lower cavity 23-73.

[0419] Three discharge mechanisms are located at the rear of the box and are seamlessly connected to the upper cavity 23-71, middle cavity 23-72 and lower cavity 23-73 inside the box.

[0420] The vibration mechanism is located at the bottom of the housing;

[0421] The striking mechanism is located at the bottom of the box.

[0422] An elastic support is located at the bottom of the housing. When the vibration mechanism is working, the housing vibrates on the elastic support.

[0423] The incoming base material particles are screened using two screening plates, removing particles that are too large or too small in diameter to meet the requirements of the incineration process. A vibrating screening method is employed, allowing for both rapid and high-volume screening. The unqualified base material is collected separately and can be reused in subsequent processing to reduce steps or for other purposes without further screening. A tapping mechanism helps to release any base material stuck on the screening plates, ensuring normal screening and extending the equipment's maintenance intervals.

[0424] In this embodiment, the screening plate includes:

[0425] Rectangular frame 23-21;

[0426] Several longitudinal beams 23-22 are set within the rectangular frame 23-21;

[0427] Several crossbeams 23-23 are set within the rectangular frame 23-21;

[0428] Screen 23-24 is set on the upper surface of rectangular frame 23-21, longitudinal beam 23-22 and cross beam 23-23.

[0429] The overall structural strength is enhanced by using rectangular frames 23-21, longitudinal beams 23-22, and transverse beams 23-23.

[0430] In this embodiment, the discharge mechanism includes:

[0431] The collecting nozzle 23-31 is box-shaped with a triangular outer contour and an opening on one side, facing the upper cavity 23-71, the middle cavity 23-72, or the lower cavity 23-73. The bottom surface of the collecting nozzle 23-31 is flush with the lower surface of the upper cavity 23-71, the middle cavity 23-72, or the lower cavity 23-73. The collecting nozzle 23-31 is parallel to the screening plate.

[0432] The discharge pipe 23-32 is located at the lowest point of the collecting nozzle 23-31.

[0433] The discharge mechanism also includes:

[0434] The upper end of the corrugated pipe 23-33 is connected to the discharge pipe 23-32; the corrugated pipe 23-33 stretches or shortens as the vibration mechanism operates;

[0435] The receiving pipe 23-34 is connected to the lower end of the corrugated pipe 23-33.

[0436] The corrugated pipes 23-33 mitigate the impact of the box vibration on the connecting pipes 23-34.

[0437] In this embodiment, the vibration mechanism includes:

[0438] Vibration transmission plate 23-41 is installed on the lower surface of the housing;

[0439] An eccentric rotation unit 23-42 is mounted on a vibration transmission plate 23-41 to transmit eccentric vibrations to the vibration transmission plate 23-41; the angle between the rotation axis of the eccentric rotation unit 23-42 and the axis of the housing is an acute angle.

[0440] Vibration plates 23-41 can reduce stress concentration and adjust the vibration intensity in different areas of the enclosure.

[0441] In this embodiment, the contact surface between the vibration transmission plate 23-41 and the lower surface of the housing is parallel to the axis of the housing; the eccentric rotation unit 23-42 is located directly below the upper part of the housing.

[0442] In this embodiment, the elastic support includes four support units, respectively disposed on both sides of the upper and lower parts of the box; the support unit includes:

[0443] Support legs 23-61 are fixedly connected to the side of the housing;

[0444] Support spring 23-62, the upper end of which is connected to support leg 23-61;

[0445] The upper end of the support column 23-63 is connected to the lower end of the support spring 23-62.

[0446] The springs mitigate the impact of the box vibration and the support columns 23-63.

[0447] In this embodiment, the spring coefficients of the support springs 23-62 of the two support units at the upper part of the box are smaller than the spring coefficients of the support springs 23-62 of the two support units at the lower part of the box.

[0448] The above settings allow the upper part of the box to vibrate more than the lower part, so that the bottom material located at the top of the box can have a greater vibration amplitude, thus allowing it to come into more contact with the screen 23-24.

[0449] In this embodiment, the striking mechanism includes four striking units, which are respectively disposed on the lower surface of the upper and lower parts of the box;

[0450] The striking unit includes:

[0451] The striking motor 23-51 has two limiting retaining rings 23-52 at the end of its rotating shaft;

[0452] The striking plate 23-53 has a strip-shaped hole 23-531 in the middle, which is fitted inside the rotating shaft of the striking motor 23-51. The width of the strip-shaped hole 23-531 is smaller than the diameter of the limiting ring 23-52. As the striking motor 23-51 rotates, the striking plate 23-53 strikes the lower surface of the box body at its end.

[0453] The striking plates 23-53 strike the box body, causing it to accelerate greatly and release the base material stuck on the screen 23-24.

[0454] In this embodiment, a notch 23-12 is provided on the upper side of the box body, and the notch 23-12 is directly opposite the lower cavity 23-73; a filter screen 23-14 is provided inside the notch 23-12;

[0455] The upper surface of the upper part of the box is provided with an air extraction port 23-132, which is connected to the upper cavity 23-71.

[0456] Reduce dust generated during the screening process.

[0457] In this embodiment, the housing includes:

[0458] Box 23-11, with an opening at the top; a sealing ring is provided on the end face of the opening;

[0459] The cover plate 23-13 is hinged to the box body 23-11 at one end and closed to the box body 23-11 at the other end by a snap lock 23-15; the cover plate 23-13 is provided with a feed inlet 23-131.

[0460] The cover plate 23-13 is separated from the box body 23-11 for easy maintenance.

[0461] In this embodiment, the base material screening mechanism works as follows: First, the eccentric transmission unit is activated, causing the box to vibrate. Then, the base material to be screened is placed into the box through the feeder.

[0462] The substrate entering the upper cavity is separated by screens 23-24. Substrate with a diameter larger than the screen's aperture rolls downwards, while substrate with a diameter smaller falls into the middle cavity 23-72. Similarly, substrate entering the middle cavity 23-72 is separated, with smaller substrate entering the lower cavity. This completes the screening of the substrate. The substrate collected in the middle cavity 23-72 meets the requirements for polyphenylene sulfide (PPS) production processes, the substrate collected in the upper cavity is for oversized diameter substrate, and the substrate collected in the lower cavity is for undersized substrate.

[0463] After a certain period of equipment operation, the striking motor 23-51 is started and operates for a period of time to strike the lower part of the box, causing the screen 23-24 to vibrate with great acceleration, shaking out the embedded base material as much as possible.

[0464] In this embodiment, the tar treatment device 41 includes:

[0465] The intake manifold 41-1 is equipped with an intake main valve 41-11.

[0466] The intake bifurcation pipe 41-2 is connected at its head end to the main intake pipe 41-1;

[0467] Two tar treatment units 41-3 are respectively connected to two air intake branch pipes 41-2;

[0468] The exhaust branch pipe 41-4 is connected to the tail end of the two tar treatment units 41-3;

[0469] The main exhaust pipe 41-5 is connected to the exhaust branch pipe 41-4 and is equipped with an exhaust main valve 41-51.

[0470] The tar treatment unit 41-3 includes:

[0471] The processing pipe 41-6 is connected to the intake branch pipe 41-2 via the intake branch valve 41-7 and to the outlet branch pipe 41-4 via the outlet branch valve 41-8; both ends of the processing pipe 41-6 are equipped with pressure gauges 41-209.

[0472] Several ceramic adsorption units are arranged at intervals in the processing tube 41-6, with each ceramic adsorption unit separating the processing tubes 41-6 on both sides.

[0473] The gas inlet pipe passes through the wall of the treatment pipe 41-6 at its end, located at the head of the treatment pipe 41-6, upstream of all ceramic adsorption units;

[0474] The gas supply pipe 41-200 passes through the wall of the treatment pipe 41-6 via the gas supply valve 41-201 at the head of the treatment pipe 41-6, which is located at the head of the gas inlet pipe.

[0475] Two tar treatment units 41-3 are connected in parallel via an inlet pipe and an outlet branch pipe 41-4 to achieve alternating treatment. This allows time for tar combustion treatment in one treatment pipe 41-6, ensuring smooth operation of the entire exhaust gas system and preventing production line shutdown. A ceramic adsorption unit is installed inside the treatment pipe 41-6 to adsorb and collect most of the tar in the exhaust gas, preventing it from entering subsequent treatment processes and effectively stopping its entry. High-temperature combustion gas is generated through the gas inlet pipe and the make-up gas pipe 41-200, which burns the tar, turning it into dust and gas. Tar decomposition can be completed without disassembling the adsorption plate.

[0476] In this embodiment, the ceramic adsorption unit includes:

[0477] The front retaining ring 41-91 is annular with an L-shaped cross-section. Its outer cylindrical surface fits against the inner wall of the treatment tube 41-6 and is fixed to the treatment tube 41-6 by screws.

[0478] The rear retaining ring 41-92 is annular with an L-shaped cross-section. Its outer cylindrical surface fits against the inner wall of the processing tube 41-6 and is fixed to the processing tube 41-6 by screws. The side plates of the rear retaining ring 41-92 and the front retaining ring 41-91 are spaced apart from each other.

[0479] The ceramic adsorption plate has several through holes on its surface, which are located between the front retaining ring 41-91 and the rear retaining ring 41-92. The two sides of the plate abut against the side plate of the front retaining ring 41-91 and the side plate of the rear retaining ring 41-92, respectively.

[0480] The design of the front retaining ring 41-91 and the rear retaining ring 41-92 not only facilitates the disassembly and assembly of the ceramic adsorption plate, but also effectively fixes the ceramic adsorption plate.

[0481] In this embodiment, there are four ceramic adsorption units; the four ceramic adsorption units are arranged sequentially according to the gas flow direction of the processing tube 41-6 as the first adsorption plate 41-931, the second adsorption plate 41-932, the third adsorption plate 41-933, and the fourth adsorption plate 41-934; the through holes on the first adsorption plate 41-931 are larger than the holes on the second adsorption plate 41-932; the through holes on the second adsorption plate 41-932 are larger than the holes on the third adsorption plate 41-933; and the through holes on the third adsorption plate 41-933 are larger than the holes on the fourth adsorption plate 41-934.

[0482] By sequentially adsorbing through the first adsorption plate 41-931, the second adsorption plate 41-932, the third adsorption plate 41-933, and the fourth adsorption plate 41-934, tar can be adsorbed to the maximum extent possible, while minimizing the impact on the exhaust gas pressure. This ensures that all four adsorption plates adsorb sufficient tar, thereby extending the regeneration interval of the adsorption plates.

[0483] In this embodiment, first holes 41-935 are provided at intervals on one side of the first adsorption plate 41-931; second holes 41-936 are provided at intervals on the other side of the first adsorption plate 41-931; the first holes 41-935 and the second holes are staggered and connected.

[0484] By staggering the first hole 41-935 and the second hole, the possibility of tar being adsorbed by the first hole 41-935 and the second hole is increased, thereby maximizing the adsorption of tar.

[0485] In this embodiment, the inner walls of the first hole 41-935 and the second hole 41-936 are rounded with the plate surface of the first adsorption plate 41-931; the inner walls of the first hole 41-935 and the bottom of the second hole 41-936 are rounded with the bottom; the interior of the second hole 41-936 is rounded with the bottom of the first hole 41-935; the structure of the first adsorption plate 41-931 is the same as the structure of the first adsorption plate 41-931.

[0486] Setting rounded corners can effectively prevent increased airflow resistance.

[0487] In this embodiment, the gas inlet pipe includes:

[0488] Gas manifold 41-101 is located outside the treatment pipe 41-6;

[0489] Several self-igniting gas pipes 41-102, one end of each gas pipe 41-102 is connected to the gas manifold 41-101, and the other end passes through the processing pipe 41-6 located upstream of each ceramic adsorption unit;

[0490] The end of the gas pipe 41-102 is perpendicular to the ceramic adsorption unit; the distance between the end of the gas pipe 41-102 and the ceramic adsorption unit is not less than one-quarter of the diameter of the ceramic adsorption unit.

[0491] During the regeneration of the ceramic adsorption plate, the gas through the gas pipe 41-102 is burned to generate high temperature, which, combined with the air from the gas supply pipe 41-200, ignites the tar, causing the tar to burn and decompose.

[0492] This embodiment also includes:

[0493] Air pump (not shown in the diagram);

[0494] The high-pressure reflux pipe 41-202 has an inlet end connected to the outlet of the air pump and an outlet end connected to the tail of the treatment pipe 41-6, located upstream of the outlet valve 41-8; the high-pressure reflux pipe 41-202 is equipped with a reflux valve 41-2021.

[0495] After tar burns, its ash remains on the ceramic adsorption plate. If not separated, it will affect the ceramic adsorption plate's ability to re-adsorb tar. The rapid flow of gas is used to carry the ash away from the ceramic adsorption plate.

[0496] This embodiment also includes:

[0497] The backflush manifold 41-203 has its inlet end connected to the outlet of the air pump via a backflush valve.

[0498] Several backflush pipes 41-204, one end of each backflush pipe 41-204 is connected to the backflush manifold 41-203, and the other end passes through the treatment pipe 41-6 located downstream of each ceramic adsorption unit, with the air outlet pointing towards the ceramic adsorption unit.

[0499] The reflux pipe 41-205 is connected at its head end to the head end of the treatment pipe 41-6 via the reflux valve 2051, and at its tail end to the outlet branch pipe 41-4.

[0500] When some ash that is firmly bonded to the ceramic adsorption plate cannot be blown away by high-speed airflow, high-pressure airflow can be used to blow and wash the ceramic adsorption plate, which can effectively separate the ash from the ceramic adsorption plate.

[0501] In this embodiment, two backflush pipes 41-204 are provided downstream of each ceramic adsorption unit, and the two backflush pipes are symmetrically arranged; the axis of the end of the backflush pipe forms an acute angle with the plate surface of the ceramic adsorption unit.

[0502] Multiple backflush tubes can clean up as much ash as possible from various areas of the ceramic adsorption plate.

[0503] In this embodiment, both the intake valve 41-7 and the exhaust valve 41-8 are connected to the processing pipe 41-6 through a flexible deformable tube 41-206;

[0504] The bottom of the processing tube 41-6 is provided with a spring support seat 41-207;

[0505] An eccentric vibrator 41-208 is provided at the bottom of the processing tube 41-6.

[0506] If a significant amount of ash remains adhered to the ceramic adsorption plate after high-speed airflow and backflow, the eccentric vibrator 41-208 can be used to vibrate the ceramic adsorption plate and shake the ash away.

[0507] The exhaust tar treatment system in this embodiment works as follows: the main inlet valve 41-11 and the main outlet valve 41-51 are opened, the inlet branch valve 41-7 and the outlet branch valve 41-8 on the first tar treatment unit 41-3 are opened, and the inlet branch valve 41-7 and the outlet branch valve 41-8 on the second tar treatment unit 41-3 are closed to achieve single-path connection operation.

[0508] Close the gas supply valve 41-201, return valve 2051, backflow valve 41-2021, gas manifold 41-101, and backflush manifold on the first tar treatment unit 41-3.

[0509] After the exhaust gas containing tar enters the treatment pipe 41-6, it flows through the first adsorption plate 41-931, the second adsorption plate 41-932, the third adsorption plate 41-933, and the fourth adsorption plate 41-934 respectively. Most of the tar in the exhaust gas is adsorbed. As the treatment pipe 41-6 is used, the amount of tar adsorbed increases, and the flow resistance of the exhaust gas increases. When the pressure difference between the pressure gauges 41-209 before and after the treatment pipe 41-6 reaches a certain value, the second tar treatment unit 41-3 is opened, allowing it to operate, while the first tar treatment unit 41-3 is closed.

[0510] The ceramic adsorption plate in the first tar treatment unit 41-3 is regenerated as follows: First, the inlet valve 41-7 is closed and the outlet valve 41-8 is opened. The gas manifold 41-101 and the make-up gas valve 41-201 are opened, and the gas enters the treatment pipe 41-6 and is ignited, so that the gas burns and the tar on the ceramic adsorption plate is also burned until the tar is completely burned off.

[0511] Then, close the gas manifold 41-101 and the gas supply valve 41-201. Close the gas outlet valve 41-8, open the backflow valve 41-2021, and inject high-pressure gas into the processing pipe 41-6 until a certain pressure is reached. Then, open the return valve 2051, and the gas will flow rapidly into the return pipe 41-205, generating high-speed gas that separates some of the ash from the ceramic adsorption plate.

[0512] Next, close the backflow valve 41-2021 and open the backflushing manifold 41-203. The air pump generates high-pressure gas, which enters the backflushing pipe 41-204 to backflush the ceramic adsorption plate in the reverse direction, blowing away the ash again. At the same time, the eccentric vibrator 41-208 can be activated to vibrate the processing pipe 41-6.

[0513] Finally, close the backflushing manifold 41-203 and the reflux valve 2051 to complete the regeneration of the first tar treatment unit 41-3.

[0514] The specific operating method of the above-mentioned polyphenylene sulfide by-product waste salt recovery production device is as follows:

[0515] When starting production, the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are started sequentially at intervals. The start interval is when the material enters the next unit and the unit is ready for production. When stopping production, the purification unit, pretreatment unit, incineration unit, and exhaust gas treatment unit are stopped sequentially at intervals. The stop interval is when the material in the previous unit has been processed.

[0516] When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are started, each piece of equipment in the unit is started sequentially and at intervals according to the material being processed. The start interval of each piece of equipment is when the material enters the next piece of equipment and the equipment is ready for production. When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are stopped, each piece of equipment in the unit is stopped sequentially and at intervals in reverse according to the material being processed. The stop interval of each piece of equipment is when the material processing of the previous unit is completed.

[0517] When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are shut down in an emergency, if there is a buffer chamber in front of the emergency stop equipment, the equipment after the emergency stop equipment will stop in reverse order according to the material being processed, until the buffer chamber reaches a certain capacity. Then, the equipment in front of the emergency stop equipment will stop in reverse order according to the material being processed.

[0518] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A production device for recovering waste salt from polyphenylene sulfide by-products, characterized in that, It includes a pretreatment unit, an incineration unit, a purification unit, and a waste gas treatment unit connected in sequence to the incineration unit; The pretreatment unit includes a dry salt bin, a screw conveyor, a dry salt buffer bin, a dry salt weighing screw, a pelletizing system, a mixer, and a conveyor connected in sequence; the outlet of the conveyor is connected to the inlet of the incineration unit; the mixer is connected to the auxiliary material bin. The incineration unit includes a pyrolysis incineration device, a jaw crusher, a screening device, and a pulverizing device connected in sequence; the feed inlet of the pyrolysis incineration device is connected to the discharge outlet of the conveyor; the screening discharge outlet of the screening device is connected to the feed inlet of the pyrolysis incineration device. The waste gas treatment unit includes a tar treatment device, a quench tower, an activated carbon adsorption device, an oxidation denitrification device, and a desulfurization device connected in sequence; the quench tower is connected to the exhaust gas of the pyrolysis incineration device. The ball-making system includes: The output pipe is set vertically downwards and its upper end is connected to the discharge port of the dry salt buffer tank. The inner wall of the output pipe is coated with polytetrafluoroethylene. The spray unit is installed inside the output pipe to spray additives onto the powdered dry salt passing through the output pipe. The guiding unit is located inside the output pipe, directly below the spraying unit, and guides the powdered dry salt after spraying. The collection unit is located at the bottom of the output pipe, directly below the guide unit, and collects and outputs the salt balls. The conveyor channel is located directly below the output pipe, and its lower surface is inclined. The adhesion unit is located on the output channel, and its axis is collinear with the output pipe. The salt ball enters the conveying channel through the adhesion unit. The disc pelletizer is fed with weighed salt pellets through the inlet. The spray unit includes: The collection funnel is set inside the output tube, with its axis collinear with the axis of the output tube; At least one spray pipe, hollow inside; the head end of the spray pipe is connected to the output pipe, and the tail end is obliquely pointed directly below the discharge port of the collection funnel; the head end of the spray pipe is located outside the collection funnel; the tail end of the spray pipe is provided with a receiving groove; the receiving groove passes through the output pipe through a flexible tube; The spray tubes are at least two in number and are arranged in a uniform circumferential arrangement around the axis of the output tube; the head end of the spray tube is hinged to the inner wall of the output tube; the axis of rotation of the spray tube is perpendicular to the axis of the output tube; the spray tube is a Venturi tube. The spray pipe is fitted with a sleeve; the sleeve slides on the spray pipe. The spray unit also includes: The control ring is located on the outside of the collection funnel and is hinged to the sleeve on the spray pipe; The control lever has its head end connected to the control ring and its tail end passing through the output tube and located outside the output tube; the output tube has a strip-shaped hole that matches the control lever; the axis of the strip-shaped hole is parallel to the axis of the output tube. The outer side of the strip-shaped hole on the output tube is provided with a shielding membrane with elastic deformation capability; the shielding membrane is provided with a through hole for the control rod to pass through; the tail end of the control rod is provided with an external thread; a nut is sleeved on the control rod; the nut engages with the control rod and abuts against the output tube, fixing the control rod and the output tube relative to each other. The guiding unit includes at least two guide plates; the guide plates are inclinedly arranged inside the output tube; the head of the guide plate is seamlessly fixed to the inner wall of the output tube, and the axis of the output tube passes through the tail of the guide plate; adjacent guide plates are staggered and tilted. The collection unit includes a collection funnel, the axis of which is collinear with the output pipe; the diameter of the collection funnel is not less than 5 times the diameter of the salt ball. The adhesion unit includes: a conical tower with a conical outer contour and a rounded top; the bottom diameter of the conical tower is not less than the inner diameter of the output tube; the minimum distance between the lower end of the output tube and the conical surface of the conical tower is not less than twice the diameter of the salt ball; The conical surface of the conical tower is a smooth curve that transitions smoothly with the upper plate surface of the conveyor. The adhesion unit further includes: Several displacement springs are vertically installed at the bottom of the output channel; A base plate is mounted on a displacement spring; sealing rubber strips are provided on the end faces of the base plate and the side wall of the output channel; a conical tower is mounted on the base plate; the conical tower is mounted on the base plate; The lower end of the output pipe is provided with a concave annular groove; the concave direction of the annular groove is obliquely upward; the annular groove is located below the material collection unit; Also includes: The air pump has an air inlet connected to the inside of an annular groove and an air outlet connected to the dry salt buffer chamber.

2. The polyphenylene sulfide by-product waste salt recovery and production device according to claim 1, characterized in that, The pyrolysis incineration device includes: a trolley system and an incineration control system; The incineration control system includes: The preheating and drying unit is installed upstream of the trolley system to cover the opening on the trolley. The ignition unit is mounted on the trolley opening, located downstream of the preheating and drying unit, adjacent to the preheating and drying unit, and ignites the trolley directly below it. The segmented incineration unit is attached to the opening of the trolley, located downstream of the ignition unit and adjacent to it. The residual gas recovery unit is installed on the outside of the trolley tilting area; The exhaust gas treatment unit has an air inlet connected to the residual gas recovery unit, which collects the preheated residual gas again and connects it to the preheating and drying unit. The preheating gas circulation unit has an air inlet connected to the trolley directly below the preheating drying unit and an air outlet connected to the segmented combustion unit. The ignition gas circulation unit has an air inlet connected to the trolley directly below the ignition unit and an air outlet connected to the staged combustion unit. The combustion gas recirculation unit has an air inlet connected to the trolley directly below the upstream section of the combustion unit, and an air outlet connected to the downstream section of the combustion unit and the exhaust gas treatment unit. The feeding unit has an inlet connected to the conveyor, and an outlet located directly above the trolley upstream of the trolley facing the preheating and drying unit. The micro-separation device for the spherical shell is set in the outlet of the feeding unit to micro-separate the salt balls from the auxiliary materials, with a layer of auxiliary materials floating on the upper surface of the raw material balls; The preheating and drying unit includes: A preheating hood with an opening facing downwards is mounted on the trolley system. Its lower end face is in contact with the upper end face of the trolley. The top of the hood is equipped with a number of preheating air inlets that are the same number as the number of preheating air inlets on the trolley. The spacing between the preheating air inlets is the same as the length of the trolley. The heating temperature sensor is installed inside the preheating hood, vertically downwards and facing the inside of the trolley. The ignition unit includes: The ignition cover, with its downward-facing hanging buckle, is mounted on the trolley system, and its lower end face is in contact with the upper end face of the trolley. The ignition needle is located inside the ignition cover, directly below the interior of the trolley. The ignition sensor is located inside the ignition cover. A hot gas pipe is connected at its head to the exhaust gas treatment unit and at its end inside the ignition hood. A heating resistance wire is installed inside the hot gas pipe. The segmented combustion unit includes: The combustion hood, with its opening facing downwards, is mounted on the trolley system, with its lower end face fitting against the upper end face of the trolley. The length of the combustion hood is not less than the length of four trolleys. Several combustion temperature sensors are installed inside the combustion hood, and the combustion temperature sensors are arranged at intervals according to the length of the trolley. The residual gas recovery unit includes an exhaust hood with an opening on the side to cover the tilted trolley and a discharge port at the bottom. The air inlets of the preheating gas circulation unit, the ignition gas circulation unit, and the combustion gas circulation unit are all connected to the bottom of the trolley through a flow guide shroud; the flow guide shroud is funnel-shaped and its width is the same as the width of the trolley. The preheating gas circulation unit includes at least one set of preheating gas components, the preheating gas components including: The preheating fan's air inlet is connected to the trolley directly below the preheating and drying unit via a preheating temperature sensor, a preheating airflow meter, and a preheating humidity sensor. The dehumidification unit has an air inlet connected to the air outlet of the preheating fan, and an air outlet connected to the segmented combustion unit. The ignition gas circulation unit includes: The ignition fan has an air inlet connected to the trolley directly below the ignition unit via an ignition temperature sensor, an ignition air volume meter, and an ignition humidity sensor, and an air outlet connected to the segmented combustion unit. The combustion gas recirculation unit, arranged sequentially according to the trolley's direction of travel, includes at least four sets of combustion gas components, at least two sets of cooling components, and at least one set of return gas components. The incineration gas assembly includes: The inlet of the combustion blower is connected to the trolley directly below the segmented combustion unit via a combustion temperature sensor and a combustion air volume meter, and the outlet is connected to the top of the downstream trolley adjacent to the combustion blower. The cooling component includes: The cooling fan has an air inlet connected to the trolley directly opposite the downstream combustion gas assembly via a cooling temperature sensor and a cooling air volume meter, and an air outlet connected to the residual gas recovery unit. The return air assembly includes: The return gas fan has its inlet connected to the trolley directly opposite the lowest section of the segmented combustion unit via a return gas temperature sensor and a return gas flow meter, and its outlet connected to the top of the trolley directly above the highest section of the combustion gas assembly. The return air fan is connected to the top of the trolley at the very top of the combustion gas assembly via a dust collector.

3. The polyphenylene sulfide by-product waste salt recovery and production device according to claim 2, characterized in that, The feeding unit includes: The feed hopper is located directly above the trolley incineration system; The discharge chute has its head end connected to the bottom of the feed hopper, and its tail end located directly above the trolley upstream of the trolley facing the drying unit; the discharge chute is inclined. The cross-section of the discharge channel is trough-shaped; The spherical shell micro-separation device includes: The material distribution plate has a head that connects to the bottom plate of the discharge channel, and an upward curve in the middle that keeps the tail away from the bottom of the discharge channel. The material distribution plate has sealing strips on both sides, and the sealing strips are pressed against the inner side of the discharge channel. The rotating rod has strip grooves on both sides of the discharge channel; the axis of the strip grooves is perpendicular to the bottom of the discharge channel; both ends of the rotating rod pass through the strip holes, and the middle part is located directly below the material distribution plate; Two compression spring mechanisms are respectively installed on both sides of the discharge channel; the lower end of the compression spring mechanism is pressed against the rotating rod. The screw plate is located at the end of the rotating rod, on the outside of the discharge channel; The top is convex, with the head fixed to the rotating rod and the tail rounded to abut against the lower surface of the middle of the material distribution section; A corner block is fitted inside a rotating rod, and the cross-section of the corner block is a regular polygon; one side of the corner block abuts against the bottom of the discharge channel; the material distribution plate is squeezed by the top protrusion under the rotation of the rotating rod, and the middle part deforms to adjust the distance between its tail and the bottom of the discharge channel; The upper surface and side of the material distribution plate head are chamfered; the upper surface of the material distribution plate smoothly transitions to the bottom of the discharge channel; the lower surface of the material distribution plate head is provided with a protrusion; the bottom of the discharge channel is provided with a locking groove that matches the protrusion. The upper surface of the head of the distribution plate is provided with a groove; a pressure block is provided in the groove; the pressure block is fixedly connected to the discharge channel by screws passing through the pressure block, the distribution plate, and the discharge channel. It also includes a remixing device, which has the same structure as the spherical shell micro-separation device and is located upstream of the spherical shell micro-separation device; the end of the distribution plate of the remixing device is comb-shaped; the width of the comb groove at the end of the distribution plate of the remixing device is smaller than the diameter of the raw material ball; Also includes: The trough-shaped combustion aid material feed channel has its discharge port located downstream of the feeding unit and upstream of the drying unit, directly opposite the trolley. The upper part of the discharge control panel is hinged to both sides of the combustion-supporting material inlet channel; The adjusting bolts are hinged at both ends to the upper part of the combustion-supporting material inlet channel and the lower part of the discharge control plate, respectively, to control the gap between the discharge control plate and the combustion-supporting material inlet channel.

4. The polyphenylene sulfide by-product waste salt recovery and production device according to claim 2, characterized in that, The pyrolysis incineration apparatus further includes a feeding system, which comprises: The discharge tilting vibrating unit is located on the outside of the trolley discharge tilting mechanism and strikes the trolley that is in the discharge tilting position. The cleaning conveyor belt is positioned directly below the incineration trolley; The brush cleaning section is located on the upper surface of the cleaning conveyor belt and is in contact with the bottom of the trolley and two opposite sides. The receiving box is an upward-opening box located directly below the upper surface of the cleaning conveyor belt. It collects the semi-finished products that fall off the trolley after the brush cleaning section cleans it. The vibration unit, located inside the receiving box, strikes the bottom of the trolley directly opposite the receiving box as the cleaning conveyor belt moves back and forth. The discharge tilting and vibrating material unit includes: The geared motor is vertically mounted, with its shaft perpendicular to the direction of movement of the incineration trolley and located on the outside of the trolley. A turntable is mounted on the shaft of a geared motor; At least one striking unit, with its head end connected to the turntable and its tail end equipped with a striking body; the striking unit is bent downwards under gravity in its natural state, and the striking body is located on the outside of the trolley; the striking unit is straightened as the turntable rotates, and the striking body strikes the side plate of the trolley as the turntable rotates. The striking unit includes a first deformable spring; the two ends of the first deformable spring are respectively connected to a turntable and a striking body; the striking body is made of rubber. The cleaning conveyor belt is a chain plate type conveyor belt; the lower surface of the chain plate is provided with a slide rail to support the chain plate; the brush cleaning part is detachably connected to the chain plate; the upper surface of the chain plate is provided with inclined surfaces that slope to both sides. The brush cleaning unit includes: Two side panel brush cleaning units are set opposite each other on the chain plate, and contact the inner surfaces of the two side panels of the trolley. The bottom cleaning brush unit is installed on the chain plate, with its top contacting the bottom of the trolley. The side panel brush cleaning unit includes: The upright is connected to the chain plate by screws; Side brushes are vertically installed on the outer side of the upright plate; the length of the side brushes is not less than the minimum distance between the outer side of the upright and the inner wall of the side plate of the trolley. The bottom cleaning unit includes at least two cleaning groups, each cleaning group including at least one bottom cleaning component, the bottom cleaning component including: The upright plate is connected to the chain plate by screws, and the width of the upright plate is smaller than the width of the trolley; A top brush is vertically installed at the top of the upright plate; the length of the top brush is greater than the minimum distance between the top of the upright plate and the bottom of the trolley. The sum of the widths of the bottom cleaning components in each cleaning group is less than the width of the trolley. The projection of the bottom cleaning components of the two adjacent cleaning groups completely obscures the cross-section of the trolley. The receiving box has notches at both ends for the upper surface of the cleaning conveyor belt to pass through; the bottom of the receiving box has a material collection slope; the bottom of the receiving box has a discharge port. The vibration unit includes: The bottom block is set on the upper surface of the upper belt surface of the cleaning conveyor belt; The rotating rod is rotatably connected to the inner wall of the receiving box at its middle part; the rotating shaft of the rotating rod is perpendicular to the movement direction of the cleaning conveyor belt. A positioning spring is connected to the rotating rod so that when the head of the rotating rod is not in contact with the bottom block, its end does not contact the bottom of the trolley. A striking block is located at the end of the rotating rod; the striking block strikes the bottom of the trolley as the head of the rotating rod is pushed by the bottom block. The end of the rotating rod is connected to the striking block via a second deformable spring; the rotating rod is located downstream of the trolley movement; the rotating rod is located on one side of the brush cleaning section.

5. The polyphenylene sulfide by-product waste salt recovery and production device according to claim 1, characterized in that, The screening device includes: The box is tilted, with a feed inlet at the top of the head; Two screening plates with a number of evenly distributed sieve holes are arranged in parallel inside the box, with the plate surfaces parallel to the box body, dividing the inside of the box body into an upper cavity, a middle cavity, and a lower cavity from top to bottom; the diameter of the holes on the screening plate between the upper cavity and the middle cavity is larger than the diameter of the holes on the screening plate between the middle cavity and the lower cavity. Three discharge mechanisms are located at the rear of the box and are seamlessly connected to the upper, middle and lower cavities inside the box. The vibration mechanism is located at the bottom of the housing; The striking mechanism is located at the bottom of the box. An elastic support is located at the bottom of the box. When the vibration mechanism is working, the box vibrates on the elastic support. The screening plate includes: Rectangular frame; Several longitudinal beams are set within a rectangular frame; Several crossbeams are set within a rectangular frame; A screen is installed on the upper surface of the rectangular frame, longitudinal beams, and transverse beams; The discharge mechanism includes: The collecting nozzle is box-shaped with a triangular outer contour and an opening on one side, facing the upper, middle, or lower cavity. The bottom surface of the collecting nozzle is flush with the lower surface of the upper, middle, or lower cavity. The collecting nozzle is parallel to the screening plate. The discharge pipe is located at the lowest point of the collecting nozzle; The discharge mechanism also includes: A corrugated pipe, the upper end of which is connected to the discharge pipe; the corrugated pipe stretches or shortens as the vibration mechanism operates; The receiving pipe is connected to the lower end of the corrugated pipe; The vibration mechanism includes: Vibration plate, installed on the lower surface of the housing; An eccentric rotating unit is mounted on the vibration transmission plate to transmit eccentric vibration to the vibration transmission plate; the angle between the rotating shaft of the eccentric rotating unit and the axis of the housing is an acute angle. The contact surface between the vibration plate and the lower surface of the housing is parallel to the axis of the housing; the eccentric rotation unit is located directly below the upper part of the housing; The elastic support section includes four support units, respectively disposed on both sides of the upper and lower parts of the housing; the support unit includes: Support legs are fixedly connected to the side of the housing; The support spring is connected to the support leg at its upper end. The upper end of the support column is connected to the lower end of the support spring; The spring coefficients of the support springs of the two support units at the top of the box are smaller than the spring coefficients of the support springs of the two support units at the bottom of the box. The striking mechanism includes four striking units, which are respectively disposed on the lower surface of the upper and lower parts of the housing; The striking unit includes: The motor is struck, and two retaining rings are located at the end of the shaft. The striking plate has a strip-shaped hole in the middle and is fitted inside the rotating shaft of the striking motor. The width of the strip-shaped hole is smaller than the diameter of the limiting retaining ring. As the striking motor rotates, the striking plate strikes the lower surface of the box body at its end. The upper side of the housing has a notch, which faces the lower cavity; a filter screen is installed inside the notch. The upper surface of the upper part of the box is provided with an air extraction port, which is connected to the upper cavity. The enclosure includes: The box has an opening at the top; a sealing ring is provided on the end face of the opening. The cover plate is hinged to the box body at one end and closed to the box body at the other end by a snap lock; the cover plate is provided with a feed port.

6. The polyphenylene sulfide by-product waste salt recovery and production device according to claim 1, characterized in that, The tar treatment device includes: The main intake pipe is equipped with the main intake valve. The intake bifurcation pipe has its head end connected to the main intake pipe. Two tar treatment units are connected to two intake branch pipes, respectively; The exhaust branch pipe connects to the tail ends of the two tar treatment units; The main exhaust pipe is connected to the exhaust branch pipe and is equipped with an exhaust main valve. The tar treatment unit includes: The processing pipe is connected to the intake branch pipe via an intake branch valve and to the outlet branch pipe via an outlet branch valve; pressure gauges are installed at both ends of the processing pipe. Several ceramic adsorption units are arranged at intervals inside the processing tube, with each ceramic adsorption unit separating the processing tubes on both sides. The gas inlet pipe passes through the wall of the treatment pipe at its end and is located at the head of the treatment pipe, upstream of all ceramic adsorption units; The gas supply pipe passes through the processing pipe wall via a gas supply valve at its end and is located at the head of the processing pipe, at the head of the gas inlet pipe. The ceramic adsorption unit includes: The front retaining ring is annular with an L-shaped cross-section. Its outer cylindrical surface fits against the inner wall of the treatment tube and is fixed to the treatment tube by screws. The rear retaining ring is annular with an L-shaped cross-section. Its outer cylindrical surface fits against the inner wall of the processing tube and is fixed to the processing tube by screws. The side plates of the rear retaining ring and the front retaining ring are spaced apart from each other. The ceramic adsorption plate has several through holes on its surface, which are located between the front retaining ring and the rear retaining ring. The two sides of the plate abut against the side plate of the front retaining ring and the side plate of the rear retaining ring, respectively. There are four ceramic adsorption units; the four ceramic adsorption units are arranged in the following order according to the gas flow direction of the treatment tube: first adsorption plate, second adsorption plate, third adsorption plate, and fourth adsorption plate; the through holes on the first adsorption plate are larger than the holes on the second adsorption plate; the through holes on the second adsorption plate are larger than the holes on the third adsorption plate; the through holes on the third adsorption plate are larger than the holes on the fourth adsorption plate. The first adsorption plate has a first hole at intervals on one side; the first adsorption plate has a second hole at intervals on the other side; the first hole and the second hole are staggered and communicate with each other. The inner walls of the first and second holes have rounded corners with the surface of the first adsorption plate; the inner walls of the first and second holes have rounded corners with the bottom; the interior of the second hole has rounded corners with the bottom of the first hole; the structure of the first adsorption plate is the same as that of the first adsorption plate. The gas inlet pipe includes: The gas manifold is located outside the treatment pipe; Several self-igniting gas pipes, one end of each gas pipe is connected to the gas manifold, and the other end passes through the treatment pipe and is located upstream of each ceramic adsorption unit. The end of the gas pipe is perpendicular to the ceramic adsorption unit; the distance between the end of the gas pipe and the ceramic adsorption unit is not less than one-quarter of the diameter of the ceramic adsorption unit. Also includes: air pump; The high-pressure reflux pipe has an inlet end connected to the outlet of the air pump and an outlet end connected to the tail of the processing pipe, located upstream of the outlet valve; a reflux valve is installed inside the high-pressure reflux pipe. Also includes: The backflush manifold has its inlet end connected to the outlet of the air pump via a backflush valve. Several backflush tubes, one end of each backflush tube is connected to the backflush manifold, and the other end passes through the treatment tube and is located downstream of each ceramic adsorption unit, with the air outlet pointing towards the ceramic adsorption unit. The return pipe is connected at one end to the head end of the processing pipe via a return valve, and at the other end to the outlet branch pipe. Two backflush pipes are provided downstream of each ceramic adsorption unit, and the two backflush pipes are symmetrically arranged; the axis of the end of the backflush pipe forms an acute angle with the plate surface of the ceramic adsorption unit. Both the intake valve and the exhaust valve are connected to the processing pipe via flexible deformable tubes. The bottom of the processing tube is provided with a spring support seat; An eccentric vibrator is provided at the bottom of the processing tube.

7. The method of using the polyphenylene sulfide by-product waste salt recovery production device according to any one of claims 1-6, characterized in that, When starting production, the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are started sequentially at intervals. The start interval is when the material enters the next unit and the unit is ready for production. When stopping production, the purification unit, pretreatment unit, incineration unit, and exhaust gas treatment unit are stopped sequentially at intervals. The stop interval is when the material in the previous unit has been processed. When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are started, each piece of equipment in the unit is started sequentially and at intervals according to the material being processed. The start interval of each piece of equipment is when the material enters the next piece of equipment and the equipment is ready for production. When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are stopped, each piece of equipment in the unit is stopped sequentially and at intervals in reverse according to the material being processed. The stop interval of each piece of equipment is when the material processing of the previous unit is completed. When the exhaust gas treatment unit, incineration unit, pretreatment unit, and purification unit are shut down in an emergency, if there is a buffer chamber in front of the emergency stop equipment, the equipment after the emergency stop equipment will stop in reverse order according to the material being processed, until the buffer chamber reaches a certain capacity. Then, the equipment in front of the emergency stop equipment will stop in reverse order according to the material being processed.

Images