Tail gas purification device for smelting of closed industrial silicon submerged arc furnace

Abstract

The invention discloses a tail gas purification device for smelting of a closed industrial silicon submerged arc furnace, and relates to the technical field of silicon iron smelting. The device comprises a purification tank, a feeding assembly is arranged on the lower portion in the purification tank, a heat exchange assembly is arranged at the center position in the purification tank, and a drying assembly is further arranged at the top of the purification tank. The U-shaped frame and the feeding pipe are driven by the driving rod to rotate, tail gas in the submerged arc furnace is evenly conveyed into the purification tank through the rotating feeding pipe, the problem that in the prior art, even feeding is not convenient is solved, the U-shaped frame drives the washing pipe to rotate in a reciprocating mode, and the tail gas purification device is convenient to use. A filter screen and a coiled pipe in the heat exchange box are washed and cleaned through a washing pipe and a high-pressure spray head, so that the problem that self-cleaning of a heat exchange structure is inconvenient in the prior art is solved, and meanwhile exhaust gas of the purification tank is dried through a folded plate and a water absorption filler in the drying assembly; the problem that in the prior art, treated tail gas is inconvenient to dry is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of ferrosilicon smelting, and in particular relates to an exhaust gas purification device for smelting in a closed industrial silicon ore-fired furnace. Background Art

[0002] Silicon is a common non-metallic element. It usually exists in the form of complex silicates or silicon dioxide in nature. It is widely used in semiconductors, composite materials, agriculture and other fields. In the industrial preparation process of silicon, a submerged arc furnace is usually used to smelt the raw materials to obtain silicon intermediate products. However, a large amount of high-temperature dusty exhaust gas will be generated during the use of the submerged arc furnace. In order to avoid the high-temperature dusty exhaust gas from polluting the environment, an exhaust gas cooling and dust removal device is generally used to treat it.

[0003] The existing document with publication number CN118111248A discloses a tail gas treatment device for an electric arc furnace and a method for using the same, comprising a treatment pipe, a tail sleeve, a head sleeve and an expansion joint, wherein the tail of the treatment pipe is threadedly connected to the tail sleeve, and the head of the treatment pipe is threadedly connected to the head sleeve, and an expansion joint is sleeved on the middle and upper outer wall of the treatment pipe, a cooling box is installed on one outer wall of the treatment pipe, and an insulation box is arranged on the opposite side of the cooling box, the cooling box and the insulation box are both connected to a heat exchange component, a disc-shaped water pipe is embedded in the chassis of the heat exchange component, the other port of the insulation box is also connected to a water tank in the head sleeve, and the water tank is connected to a spray component, and at the same time, the spray component is erected just above the air guide component;

[0004] However, it still has the following disadvantages in actual use:

[0005] 1. In the above-mentioned submerged arc furnace tail gas treatment device, a tail gas pipe is inserted at the bottom of the side wall of the treatment pipe, and the tail gas pipe is arranged in an inclined structure. The bottom side wall of one end of the tail gas pipe located inside the treatment pipe is arranged below the heat exchange component. The high-temperature dust-containing tail gas in the submerged arc furnace is input into the treatment pipe through the tail gas pipe for cooling and dust removal. However, when in use, it cannot ensure that the tail gas is evenly transported to the inside of the treatment pipe, resulting in uneven contact between the tail gas and the treatment liquid and the heat exchange component in the treatment pipe, thereby resulting in unsatisfactory cooling and dust removal effect for the tail gas;

[0006] 2. In the above-mentioned ore-fired furnace tail gas treatment device, a disc-shaped water pipe is embedded in the chassis of the heat exchange component, and a lower purification plate and an upper purification plate are respectively embedded in the lower and upper side walls of the chassis. The heat in the tail gas is recovered by the disc-shaped water pipe, so that the tail gas is cooled down, and the tail gas is preliminarily filtered by the lower purification plate and the upper purification plate, so that the solid particles with larger particle size in the tail gas are screened out. However, during use, the solid particles with smaller particle size in the tail gas may adhere to the outer wall of the disc-shaped water pipe and the filter holes of the lower purification plate and the upper purification plate, thereby affecting the heat exchange efficiency of the disc-shaped water pipe and the filtering effect of the lower purification plate and the upper purification plate;

[0007] 3. In the above-mentioned blast furnace exhaust gas treatment device, the other port of the insulation box is also connected to the water tank in the pipe head sleeve, and the water tank is connected to the spray assembly. The hot water in the insulation box is introduced into the pipe head sleeve through the water tank and the pipe head sleeve is heated, so that the exhaust gas after cooling and dust removal is dried by the heated pipe head sleeve. However, during use, it cannot remove moisture in the exhaust gas, resulting in excessive moisture content in the discharged exhaust gas, unsatisfactory treatment effect, and waste of water resources.

[0008] To this end, we provide an exhaust gas purification device for closed industrial silicon ore-fired furnace smelting to solve the above problems. Summary of the invention

[0009] The purpose of the present invention is to provide an exhaust gas purification device for smelting in a closed industrial silicon ore-burning furnace, which drives a U-shaped frame and a feed pipe to rotate through a driving rod, and evenly transports the exhaust gas in the ore-burning furnace to the inside of a purification tank through the rotating feed pipe, thereby solving the existing problem of inconvenience in uniform feeding. The flushing pipe is driven by the U-shaped frame to rotate back and forth, and the filter screen and the serpentine pipe in the heat exchange box are flushed and cleaned through the flushing pipe and the high-pressure nozzle, thereby solving the existing problem of inconvenience in self-cleaning of the heat exchange structure. At the same time, the exhaust gas of the purification tank is dried through the folding plate and the water-absorbing filler in the drying component, thereby solving the existing problem of inconvenience in drying the treated exhaust gas.

[0010] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0011] The present invention is an exhaust gas purification device for smelting in a closed industrial silicon ore furnace, comprising a purification tank, a heat preservation box is fixedly connected to the front end surface of the purification tank, a feeding assembly is arranged at the lower part of the purification tank, a heat exchange assembly is arranged at the center position of the purification tank, and a drying assembly is also arranged on the top of the purification tank;

[0012] The feed assembly includes a first mounting frame fixedly connected to the lower part of the purification tank, a rotating shaft is rotatably penetrated at the center position of the surface of the first mounting frame, a first bevel gear is sleeved on the top end of the rotating shaft, a U-shaped frame is welded on the bottom end of the rotating shaft, a feed pipe is fixedly connected to the inside of the U-shaped frame, a plurality of through holes are opened at equal intervals along the circumference of the feed pipe at one end of the feed pipe, a driving rod is rotatably connected to the top of the first mounting frame, a second bevel gear is sleeved on the rear end of the driving rod, and the first bevel gear and the second bevel gear are meshed with each other;

[0013] The heat exchange assembly includes a heat exchange box fixedly connected to the inside of the purification tank, a flushing pipe is rotatably connected to the top of the heat exchange box, and a plurality of high-pressure nozzles are fixedly connected to the flushing pipe at equal intervals along the axial direction of the flushing pipe, a mounting rod is welded to the rear end of the flushing pipe, the rear end of the mounting rod rotates through the rear end surface of the purification tank and is welded with a transmission gear, the rear end of the purification tank is vertically movably connected to a U-shaped frame, a rack is welded on the inner wall of one side of the U-shaped frame, and the rack is meshingly connected to one side of the transmission gear;

[0014] The drying component includes a drying box fixedly connected to the top of the purification tank, a plurality of folding plates are fixedly connected at equal intervals from top to bottom inside the drying box, a plurality of ventilation holes are evenly opened on the surface of the folding plates, and water-absorbing fillers are filled between adjacent folding plates. A heating box is fixedly connected to the outer walls on both sides of the drying box, a plurality of fifth connecting pipes are evenly penetrated on the outer wall of one side of the heating box, one end of the fifth connecting pipe penetrates the outer walls on both sides of the drying box and extends to the interior of the drying box, and the other end of the fifth connecting pipe extends to the interior of the heating box, a heat conducting plate is fixedly connected to the inner center of the heating box, and a plurality of fins are evenly fixedly connected to the outer walls on both sides of the heat conducting plate.

[0015] The present invention is further configured as follows: the other end of the feed pipe is fixedly connected to the second connecting pipe through the first three-way joint, the bottom end of the second connecting pipe is connected to the exhaust pipe through the first rotating joint, and the front end of the exhaust pipe passes through the bottom of the front end surface of the purification tank and extends to the outer front end of the purification tank.

[0016] The present invention is further configured as follows: a driving motor is fixedly connected to the front end surface of the purification tank through a motor frame, the output shaft of the driving motor is fixedly connected to the front end of the driving rod, a first bearing seat is fixedly connected to the top of the first mounting frame, and the rear end of the driving rod rotates and passes through the first bearing seat.

[0017] The present invention is further configured as follows: a partition is fixedly connected to the inside of the purification tank, a first connecting pipe is passed through the outer walls on both sides of the purification tank, both ends of the first connecting pipe extend to the bottom and top of the partition respectively, one end of the first connecting pipe located below the partition is fixedly connected to a gas collecting hood, and a sewage pipe is passed through the bottom of the purification tank.

[0018] The present invention is further configured as follows: a spray assembly is also provided above the interior of the purification tank, the spray assembly is located above the partition, the spray assembly includes a second mounting bracket fixedly connected to the interior of the purification tank, a water inlet pipe penetrates the surface of the second mounting bracket, one end of the water inlet pipe extends to the outside side of the purification tank, the other end of the water inlet pipe is fixedly connected to an atomizer, a plurality of fourth connecting pipes are fixedly connected at equal intervals on the outer arm of the atomizer, one end of the plurality of fourth connecting pipes away from the atomizer is fixedly connected to the same annular pipe, and a plurality of atomizing nozzles are fixedly connected to the annular pipe at equal intervals.

[0019] The present invention is further configured as follows: a filter is fixedly connected to the lower interior of the heat exchange box, a plurality of serpentine tubes are fixedly connected to the upper interior of the heat exchange box at equal intervals, and both ends of the serpentine tubes extend to the interior of the insulation box.

[0020] The present invention is further configured as follows: the front and rear ends of the top of the heat exchange box are fixedly connected to the second bearing seat, the front and rear ends of the flushing pipe are rotatably connected to the inside of the second bearing seat, the inside of the insulation box is fixedly connected to a water pump, the water outlet end of the water pump is fixedly connected to a third connecting pipe, and the top end of the third connecting pipe is fixedly connected to the front end of the flushing pipe through a second rotating joint.

[0021] The present invention is further configured as follows: a fixing plate is welded on the rear end surface of the purification tank, a hydraulic cylinder is fixedly connected to the lower surface of the fixing plate, a piston shaft of the hydraulic cylinder is fixedly connected to the bottom center position of the U-shaped frame, limiting rods are welded on both sides of the bottom of the U-shaped frame, the bottom end of the limiting rod movably passes through the fixing plate and is threadedly sleeved with a limiting nut.

[0022] The present invention is further configured as follows: a discharge pipe is passed through the bottom of the drying box, the bottom end of the discharge pipe extends to the upper part of the purification tank, and a discharge pipe is passed through the top of the drying box.

[0023] The present invention is further configured as follows: a steam pipe passes through the top of the thermal insulation box, the bottom end of the steam pipe extends to the upper part of the interior of the thermal insulation box, the top end of the steam pipe is fixedly connected to a sixth connecting pipe via a second three-way joint, and one end of the sixth connecting pipe away from the second three-way joint passes through the other side outer wall of the drying box and extends to the interior of the drying box.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention sets a feed assembly, starts a drive motor, and the output shaft of the drive motor drives the drive rod to rotate. The drive rod drives the first bevel gear and the rotating shaft to rotate through the second bevel gear, so that the rotating shaft drives the U-shaped frame and the feed pipe to rotate. The exhaust gas is evenly distributed on the inner lower side of the purification tank through the rotating feed pipe, which is convenient for evenly distributing the exhaust gas, so that the exhaust gas can evenly and fully contact the heat exchange structure and the dust removal structure, thereby improving the overall heat exchange efficiency and dust removal efficiency.

[0026] 2. The present invention sets a heat exchange component, starts the hydraulic cylinder, and drives the U-shaped frame to perform vertical linear reciprocating motion through the piston shaft of the hydraulic cylinder, so that under the action of the meshing connection between the rack and the transmission gear, the mounting rod drives the flushing pipe to perform reciprocating rotational motion, and then starts the water pump. Under the action of the water pump, the water in the insulation box enters the flushing pipe, and the water flow is sprayed on the filter and the serpentine tube through the high-pressure nozzle, thereby realizing the self-cleaning function of the filter and the serpentine tube, facilitating the self-cleaning of the heat exchange structure, avoiding the solid particles in the exhaust gas from adhering to the heat exchange structure and affecting its heat exchange efficiency, and improving the overall heat exchange efficiency.

[0027] 3. The present invention sets a drying component, uses a folding plate to condense the moisture in the exhaust gas, and uses a water-absorbing filler to absorb the condensed water droplets and other substances, thereby achieving rapid drying of the exhaust gas after cooling and dust removal, thereby facilitating the discharge of the treated exhaust gas and reducing the waste of water resources.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 The diagram is a schematic diagram of the overall structure of an exhaust gas purification device for smelting in a closed industrial silicon ore-fired furnace.

[0031] Figure 2 It is a front cross-sectional view of the purification tank of the present invention.

[0032] Figure 3 It is a schematic structural diagram of the feed assembly of the present invention.

[0033] Figure 4 It is a structural schematic diagram of the U-shaped frame of the present invention.

[0034] Figure 5 It is a schematic structural diagram of the feed pipe of the present invention.

[0035] Figure 6 It is a schematic structural diagram of the heat exchange component of the present invention.

[0036] Figure 7 This is a structural disassembly diagram of the heat exchange box of the present invention.

[0037] Figure 8 It is a schematic diagram of the structure of the flushing pipe of the present invention.

[0038] Fig. 9 It is a structural schematic diagram of the U-shaped frame of the present invention.

[0039] Fig.10 It is a schematic diagram of the structure of the spray assembly of the present invention.

[0040] Fig.11 It is a front cross-sectional view of the drying component of the present invention.

[0041] Fig.12 It is a structural schematic diagram of the folding plate of the present invention.

[0042] Fig.13 It is a schematic diagram of the installation between the heating box and the steam pipe of the present invention.

[0043] Fig.14 It is a front cross-sectional view of the heating box of the present invention.

[0044] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0045] 1-purification tank, 101-partition, 102-first connecting pipe, 103-gas collecting cover, 104-drain pipe, 2-insulation box, 3-feeding assembly, 301-first mounting frame, 302-U-shaped frame, 302a-rotating shaft, 302b-first bevel gear, 303-feeding pipe, 303a-through hole, 303b-first three-way joint, 303c-second connecting pipe, 303d-first rotating Joint, 304-exhaust pipe, 305-driving rod, 305a-second bevel gear, 305b-motor frame, 305c-driving motor, 305d-first bearing seat, 4-heat exchange component, 401-heat exchange box, 401a-filter, 401b-serpentine pipe, 402-flushing pipe, 402a-second bearing seat, 402b-high pressure nozzle, 402c-mounting rod, 402d-transmission Gear, 402e-water pump, 402e-1-third connecting pipe, 402e-2-second rotating joint, 403-U-shaped frame, 403a-rack, 403b-fixing plate, 403c-hydraulic cylinder, 403d-limiting rod, 403e-limiting nut, 5-spraying assembly, 501-second mounting frame, 502-water inlet pipe, 503-atomizer, 504-fourth connecting pipe, 505- Annular tube, 506-atomizing nozzle, 6-drying assembly, 601-drying box, 601a-discharge pipe, 601b-discharge pipe, 602-folding plate, 602a-vent, 603-water-absorbing filler, 604-heating box, 604a-fifth connecting pipe, 604b-heat conducting plate, 604c-fin, 605-steam pipe, 605a-second three-way joint, 605b-sixth connecting pipe. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1

[0048] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.10 As shown, it is the first embodiment of the present invention, which provides an exhaust gas purification device for smelting in a closed industrial silicon ore furnace, including a purification tank 1, a heat preservation box 2 is fixedly connected to the front end surface of the purification tank 1, a feed assembly 3 is arranged at the lower part of the purification tank 1, and the feed assembly 3 includes a first mounting frame 301, a U-shaped frame 302, a feed pipe 303 and a driving rod 305. The U-shaped frame 302 and the feed pipe 303 are driven by the driving rod 305 to rotate relative to the first mounting frame 301, and the high-temperature exhaust gas in the industrial silicon ore furnace is input into the purification tank 1 through the rotating feed pipe 303 for cooling and dust removal, which solves the existing problem of inconvenience in evenly distributing the exhaust gas.

[0049] Specifically, the first mounting frame 301 is fixedly connected to the lower part of the purification tank 1, and a rotating shaft 302a is rotatably passed through the center position of the surface of the first mounting frame 301. The top end of the rotating shaft 302a is sleeved with a first bevel gear 302b, and a U-shaped frame 302 is welded to the bottom end of the rotating shaft 302a. A feed pipe 303 is fixedly connected to the inside of the U-shaped frame 302, and one end of the feed pipe 303 is provided with a plurality of through holes 303a at equal intervals along the circumference of the feed pipe 303. A driving rod 305 is rotatably connected to the top of the first mounting frame 301, and a second bevel gear 305a is sleeved on the rear end of the driving rod 305. The first bevel gear 302b and the second bevel gear 305a are meshed with each other. The first mounting frame 301 is used to install the U-shaped frame 302 and other structures inside the purification tank 1, the U-shaped frame 302 is used to install the feed pipe 303 and drive the feed pipe 303 to rotate, the shaft 302a is used to rotatably install the U-shaped frame 302 on the first mounting frame 301, the first bevel gear 302b is used to drive the shaft 302a to rotate, thereby driving the U-shaped frame 302 to rotate, the feed pipe 303 and the through hole 303a are used to distribute the exhaust gas at the lower part of the interior of the purification tank 1, and the drive rod 305 and the second bevel gear 305a are used to drive the first bevel gear 302b to rotate.

[0050] Furthermore, a partition 101 is fixedly connected to the interior of the purification tank 1, and a first connecting pipe 102 is passed through the outer walls of both sides of the purification tank 1, and the two ends of the first connecting pipe 102 extend to the bottom and the top of the partition 101 respectively. One end of the first connecting pipe 102 located below the partition 101 is fixedly connected to a gas collecting hood 103, and a sewage pipe 104 is passed through the bottom of the purification tank 1;

[0051] The other end of the feed pipe 303 is fixedly connected to the second connecting pipe 303c through the first three-way joint 303b, and the bottom end of the second connecting pipe 303c is connected to the tail gas pipe 304 through the first rotating joint 303d. The front end of the tail gas pipe 304 passes through the bottom of the front end surface of the purification tank 1 and extends to the outer front end of the purification tank 1;

[0052] A driving motor 305c is fixedly connected to the front end surface of the purification tank 1 through a motor frame 305b, the output shaft of the driving motor 305c is fixedly connected to the front end of the driving rod 305, and a first bearing seat 305d is fixedly connected to the top of the first mounting frame 301, and the rear end of the driving rod 305 rotates and passes through the first bearing seat 305d;

[0053] A spray assembly 5 is also provided above the interior of the purification tank 1. The spray assembly 5 is located above the partition 101. The spray assembly 5 includes a second mounting frame 501 fixedly connected to the interior of the purification tank 1. A water inlet pipe 502 runs through the surface of the second mounting frame 501. One end of the water inlet pipe 502 extends to the outside of the purification tank 1. The other end of the water inlet pipe 502 is fixedly connected to an atomizer 503. A plurality of fourth connecting pipes 504 are fixedly connected to the outer arm of the atomizer 503 at equal intervals. The ends of the plurality of fourth connecting pipes 504 away from the atomizer 503 are fixedly connected to the same annular pipe 505. A plurality of atomizing nozzles 506 are fixedly connected to the annular pipe 505 at equal intervals.

[0054] The operation process of this embodiment is as follows: the end of the tail gas pipe 304 located outside the purification tank 1 is connected to the exhaust pipe system of the closed industrial silicon submerged arc furnace, so that the tail gas in the submerged arc furnace enters the purification tank 1 through the tail gas pipe 304, the second connecting pipe 303c and the feeding pipe 303 in sequence, and the driving motor 305c is started while feeding, and the output shaft of the driving motor 305c drives the driving rod 305 to rotate, and the driving rod 305 drives the first bevel gear 302b and the rotating shaft 302a to rotate through the second bevel gear 305a, so that the rotating shaft 302a drives the U-shaped frame 302 The feed pipe 303 rotates, and the exhaust gas is evenly distributed on the inner lower part of the purification tank 1 through the rotating feed pipe 303. Finally, the exhaust gas is cooled by the heat exchange structure under the partition 101, and the cooled exhaust gas enters the upper part of the partition 101 through the gas collecting hood 103 and the first connecting pipe 102. At this time, the water for spraying is provided to the atomizer 503 through the water inlet pipe 502. The water is atomized by the atomizer 503 and then sprayed out through the atomizing nozzle 506, thereby realizing the spraying and dust reduction of the exhaust gas, and realizing the cooling and dust removal of the exhaust gas of the closed industrial silicon ore thermal furnace.

[0055] Example 2

[0056] See also Figure 1 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, it is the second embodiment of the present invention, which is based on the previous embodiment, but is different from the previous embodiment in that a heat exchange component 4 is arranged at the inner center position of the purification tank 1, and the heat exchange component 4 includes a heat exchange box 401, a flushing pipe 402 and a U-shaped frame 403. The heat exchange box 401 is used to cool the exhaust gas, and the flushing pipe 402 is driven to rotate by the U-shaped frame 403, so that the filter 401a and the serpentine tube 401b in the heat exchange box 401 are flushed with high pressure through the flushing pipe 402, which solves the existing problem of inconvenience in avoiding the solid particles in the exhaust gas from adhering to the filter 401a and the serpentine tube 401b.

[0057] Specifically, the heat exchange box 401 is fixedly connected to the inside of the purification tank 1, and a flushing pipe 402 is rotatably connected to the top of the heat exchange box 401. A plurality of high-pressure nozzles 402b are fixedly connected to the flushing pipe 402 at equal intervals along the axial direction of the flushing pipe 402. A mounting rod 402c is welded to the rear end of the flushing pipe 402. The rear end of the mounting rod 402c rotates through the rear end surface of the purification tank 1 and is welded with a transmission gear 402d. The rear end of the purification tank 1 is vertically movably connected to a U-shaped frame 403. A rack 403a is welded on the inner wall of one side of the U-shaped frame 403. The rack 403a is meshed and connected to one side of the transmission gear 402d. The heat exchange box 4 01 is configured to recycle and reuse the heat in the exhaust gas, the flushing pipe 402 and the high-pressure nozzle 402b are configured to provide high-pressure water flow to the interior of the heat exchange box 401, thereby flushing and cleaning the internal structure of the heat exchange box 401, the mounting rod 402c is configured to drive the flushing pipe 402 to rotate, the transmission gear 402d is configured to drive the mounting rod 402c to rotate, the U-shaped frame 403 is configured to install the rack 403a and drive the rack 403a to perform a vertical linear reciprocating motion, and the rack 403a is configured to drive the transmission gear 402d to rotate.

[0058] Furthermore, a filter screen 401a is fixedly connected to the lower part of the heat exchange box 401, and multiple serpentine tubes 401b are fixedly connected to the upper part of the heat exchange box 401 at equal intervals, and both ends of the serpentine tubes 401b extend to the inside of the insulation box 2;

[0059] The front and rear ends of the top of the heat exchange box 401 are fixedly connected to the second bearing seat 402a, the front and rear ends of the flushing pipe 402 are rotatably connected to the inside of the second bearing seat 402a, the inside of the heat preservation box 2 is fixedly connected to a water pump 402e, the water outlet end of the water pump 402e is fixedly connected to a third connecting pipe 402e-1, and the top end of the third connecting pipe 402e-1 is fixedly connected to the front end of the flushing pipe 402 through a second rotating joint 402e-2;

[0060] A fixing plate 403b is welded on the rear end surface of the purification tank 1, and a hydraulic cylinder 403c is fixedly connected to the lower surface of the fixing plate 403b. The piston shaft of the hydraulic cylinder 403c is fixedly connected to the bottom center position of the U-shaped frame 403. Limiting rods 403d are welded on both sides of the bottom of the U-shaped frame 403. The bottom end of the limiting rod 403d movably passes through the fixing plate 403b and is threadedly sleeved with a limiting nut 403e.

[0061] The rest of the structure is the same as that of Example 1.

[0062] The operation process of this embodiment is as follows: the exhaust gas inside the purification tank 1 enters the heat exchange box 401 after preliminary filtration by the filter screen 401a, and the exhaust gas contacts the serpentine tube 401b inside the heat exchange box 401, and the heat of the exhaust gas is used to heat the water in the serpentine tube 401b, and the heat in the serpentine tube 401b is transferred to the inside of the insulation box 2, thereby realizing the recovery and reuse of the heat in the exhaust gas. At the same time, when it is necessary to clean the filter screen 401a and the serpentine tube 401b, the hydraulic cylinder 403c is started, and the hydraulic cylinder 403c is used to heat the water in the serpentine tube 401b. c's piston shaft drives the U-shaped frame 403 to perform vertical linear reciprocating motion, so that under the action of the meshing connection between the rack 403a and the transmission gear 402d, the mounting rod 402c drives the flushing tube 402 to perform reciprocating rotational motion, and then the water pump 402e is started. Under the action of the water pump 402e, the water in the insulation box 2 enters the flushing tube 402, and the water flow is sprayed onto the filter screen 401a and the serpentine tube 401b through the high-pressure nozzle 402b, thereby realizing the self-cleaning function of the filter screen 401a and the serpentine tube 401b.

[0063] Example 3

[0064] See also Figure 1 , Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, it is the third embodiment of the present invention, which is based on any of the above embodiments, but is different from any of the above embodiments in that: a drying component 6 is also arranged on the top of the purification tank 1, and the drying component 6 includes a drying box 601, a folding plate 602, a water-absorbing filler 603 and a heating box 604. The moisture in the exhaust gas is condensed by the folding plate 602, and the condensed water droplets are absorbed by the water-absorbing filler 603, thereby solving the existing problem of inconvenience in quickly drying the treated exhaust gas.

[0065] Specifically, the drying box 601 is fixedly connected to the top of the purification tank 1, and a plurality of folding plates 602 are fixedly connected at equal intervals from top to bottom inside the drying box 601, and a plurality of vent holes 602a are evenly opened on the surface of the folding plates 602, and water-absorbing fillers 603 are filled between adjacent folding plates 602. The outer walls of both sides of the drying box 601 are fixedly connected to the heating box 604, and a plurality of fifth connecting pipes 604a are evenly penetrated on the outer wall of one side of the heating box 604, one end of the fifth connecting pipe 604a penetrates the outer walls of both sides of the drying box 601 and extends to the interior of the drying box 601, and the other end of the fifth connecting pipe 604a extends to the interior of the heating box 604, and a heat conducting plate 604b is fixedly connected to the inner center of the heating box 604, and the outer walls of both sides of the heat conducting plate 604b are evenly A plurality of fins 604c are fixedly connected, and the drying box 601 is used to install structures such as the folding plate 602. The front section of the folding plate 602 is trapezoidal, and is welded by a horizontal plate and two inclined plates, so as to increase its contact surface with the exhaust gas, so that the moisture in the exhaust gas can be fully condensed on the folding plate 602. The water-absorbing filler 603 is used to absorb the condensed moisture. The heating box 604 is used to heat the interior of the drying box 601. The fifth connecting pipe 604a is used to connect the interior of the heating box 604 and the drying box 601 to each other. The heat conducting plate 604b is used to divide the interior of the heating box 604 into two enclosed spaces, and cooperates with the fin 604c to enhance the heat transfer between the two enclosed spaces.

[0066] Furthermore, a discharge pipe 601a is passed through the bottom of the drying box 601, and the bottom end of the discharge pipe 601a extends to the upper part of the purification tank 1, and a discharge pipe 601b is passed through the top of the drying box 601;

[0067] A steam pipe 605 passes through the top of the thermal insulation box 2, and the bottom end of the steam pipe 605 extends to the upper part of the interior of the thermal insulation box 2. The top end of the steam pipe 605 is fixedly connected to a sixth connecting pipe 605b via a second three-way joint 605a. The end of the sixth connecting pipe 605b away from the second three-way joint 605a passes through the outer wall of the other side of the drying box 601 and extends to the interior of the drying box 601.

[0068] The rest of the structure is the same as that of Example 2.

[0069] The operation process of this embodiment is as follows: the steam in the heat preservation box 2 enters the heating box 604 through the steam pipe 605 and the sixth connecting pipe 605b, and under the heat transfer effect of the heat conduction plate 604b and the fin 604c, the heat in the steam is transferred to the air inside the drying box 601, thereby heating the exhaust gas inside the drying box 601, and the exhaust gas after cooling and dust removal enters the drying box 601 through the discharge pipe 601a, and the moisture in the exhaust gas is condensed into water droplets on the folding plate 602, and the condensed water droplets are absorbed by the water-absorbing filler 603, thereby drying the exhaust gas inside the drying box 601.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tail gas purification device for closed industrial silicon ore-fired furnace smelting, comprising a purification tank (1), characterized in that: A heat preservation box (2) is fixedly connected to the front end surface of the purification tank (1), a feeding assembly (3) is arranged at the lower part of the purification tank (1), a heat exchange assembly (4) is arranged at the center of the purification tank (1), and a drying assembly (6) is also arranged at the top of the purification tank (1); The feed assembly (3) comprises a first mounting frame (301) fixedly connected to the lower part of the purification tank (1), and a rotating shaft (302a) is rotatably penetrated at the center position of the surface of the first mounting frame (301), a first bevel gear (302b) is sleeved on the top end of the rotating shaft (302a), and a U-shaped frame (302) is welded to the bottom end of the rotating shaft (302a), a feed pipe (303) is fixedly connected to the inside of the U-shaped frame (302), and one end of the feed pipe (303) is provided with a plurality of through holes (303a) at equal intervals along the circumference of the feed pipe (303), a driving rod (305) is rotatably connected to the top of the first mounting frame (301), and a second bevel gear (305a) is sleeved on the rear end of the driving rod (305), and the first bevel gear (302b) and the second bevel gear (305a) are meshed with each other; The heat exchange assembly (4) comprises a heat exchange box (401) fixedly connected to the inside of the purification tank (1), and a flushing pipe (402) is rotatably connected to the top of the heat exchange box (401), and a plurality of high-pressure nozzles (402b) are fixedly connected to the flushing pipe (402) at equal intervals along the axial direction of the flushing pipe (402), and a mounting rod (402c) is welded to the rear end of the flushing pipe (402), and the rear end of the mounting rod (402c) is rotatably penetrated through the rear end surface of the purification tank (1) and welded to a transmission gear (402d), and the rear end of the purification tank (1) is movably connected to a U-shaped frame (403) in the vertical direction, and a rack (403a) is welded to the inner wall of one side of the U-shaped frame (403), and the rack (403a) is meshingly connected to one side of the transmission gear (402d); The drying assembly (6) comprises a drying box (601) fixedly connected to the top of the purification tank (1), and a plurality of folding plates (602) are fixedly connected at equal intervals from top to bottom inside the drying box (601), a plurality of vent holes (602a) are evenly opened on the surface of the folding plates (602), and water-absorbing fillers (603) are filled between adjacent folding plates (602), and heating boxes (604) are fixedly connected to the outer walls of both sides of the drying box (601), and one side of the outer wall of the heating box (604) is A plurality of fifth connecting tubes (604a) are uniformly passed through the wall, one end of the fifth connecting tube (604a) passes through the outer walls on both sides of the drying box (601) and extends to the interior of the drying box (601), and the other end of the fifth connecting tube (604a) extends to the interior of the heating box (604), a heat conducting plate (604b) is fixedly connected to the center position of the interior of the heating box (604), and a plurality of fins (604c) are uniformly fixedly connected to the outer walls on both sides of the heat conducting plate (604b).

2. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 1 is characterized in that: The other end of the feed pipe (303) is fixedly connected to a second connecting pipe (303c) via a first three-way joint (303b), and the bottom end of the second connecting pipe (303c) is connected to a tail gas pipe (304) via a first rotating joint (303d), and the front end of the tail gas pipe (304) passes through below the front end surface of the purification tank (1) and extends to the outer front end of the purification tank (1).

3. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 1 is characterized in that: A driving motor (305c) is fixedly connected to the front end surface of the purification tank (1) via a motor frame (305b), and the output shaft of the driving motor (305c) is fixedly connected to the front end of the driving rod (305), and a first bearing seat (305d) is fixedly connected to the top of the first mounting frame (301), and the rear end of the driving rod (305) rotates and passes through the first bearing seat (305d).

4. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 3 is characterized in that: A partition (101) is fixedly connected to the interior of the purification tank (1), and first connecting pipes (102) are passed through the outer walls on both sides of the purification tank (1), and the two ends of the first connecting pipe (102) extend to the bottom and the top of the partition (101) respectively, and one end of the first connecting pipe (102) located below the partition (101) is fixedly connected to a gas collecting hood (103), and a sewage discharge pipe (104) is passed through the bottom of the purification tank (1).

5. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 4 is characterized in that: A spray assembly (5) is also provided above the interior of the purification tank (1), and the spray assembly (5) is located above the partition (101). The spray assembly (5) comprises a second mounting frame (501) fixedly connected to the interior of the purification tank (1), and a water inlet pipe (502) penetrates the surface of the second mounting frame (501), one end of the water inlet pipe (502) extends to the outside of the purification tank (1), and the other end of the water inlet pipe (502) is fixedly connected to an atomizer (503), a plurality of fourth connecting pipes (504) are fixedly connected at equal intervals on the outer arm of the atomizer (503), and the ends of the plurality of fourth connecting pipes (504) away from the atomizer (503) are fixedly connected to the same annular pipe (505), and a plurality of atomizing nozzles (506) are fixedly connected to the annular pipe (505) at equal intervals.

6. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 1 is characterized in that: A filter screen (401a) is fixedly connected to the lower part of the interior of the heat exchange box (401), and a plurality of serpentine tubes (401b) are fixedly connected to the upper part of the interior of the heat exchange box (401) at equal intervals, with both ends of the serpentine tubes (401b) extending to the interior of the insulation box (2).

7. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 1 is characterized in that: The front and rear ends of the top of the heat exchange box (401) are fixedly connected to the second bearing seat (402a), and the front and rear ends of the flushing pipe (402) are rotatably connected to the inside of the second bearing seat (402a). The inside of the thermal insulation box (2) is fixedly connected to a water pump (402e), and the water outlet end of the water pump (402e) is fixedly connected to a third connecting pipe (402e-1). The top end of the third connecting pipe (402e-1) is fixedly connected to the front end of the flushing pipe (402) via a second rotating joint (402e-2).

8. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 1 is characterized in that: A fixing plate (403b) is welded on the rear end surface of the purification tank (1), and a hydraulic cylinder (403c) is fixedly connected to the lower surface of the fixing plate (403b), the piston shaft of the hydraulic cylinder (403c) is fixedly connected to the bottom center position of the U-shaped frame (403), and limiting rods (403d) are welded on both sides of the bottom of the U-shaped frame (403), and the bottom end of the limiting rod (403d) movably passes through the fixing plate (403b) and is threadedly sleeved with a limiting nut (403e).

9. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 1, characterized in that: A discharge pipe (601a) penetrates the bottom of the drying box (601), and the bottom end of the discharge pipe (601a) extends to the upper part of the purification tank (1), and a discharge pipe (601b) penetrates the top of the drying box (601).

10. The exhaust gas purification device for closed industrial silicon ore-fired furnace smelting according to claim 1, characterized in that: A steam pipe (605) passes through the top of the heat preservation box (2), and the bottom end of the steam pipe (605) extends to the upper part of the interior of the heat preservation box (2); the top end of the steam pipe (605) is fixedly connected to a sixth connecting pipe (605b) via a second three-way joint (605a), and the end of the sixth connecting pipe (605b) away from the second three-way joint (605a) passes through the outer wall of the other side of the drying box (601) and extends to the interior of the drying box (601).

Images