A fuel additive production waste liquid recovery device

Abstract

The present application relates to waste liquid recycling technical field, specifically is a kind of fuel additive production waste liquid recovery equipment, including recovery tower;Recovery tower is fixedly installed with baffle two and baffle one from top to bottom interval type, baffle two is provided with air hole, recovery tower is isolated into adsorption cavity, condensation cavity and permeation cavity from top to bottom;Permeation cavity is fixedly installed with permeation mechanism, and the inner wall of permeation cavity is provided with drainage mechanism, and gas guide assembly is arranged between permeation cavity and condensation cavity;Condensation cavity is fixedly installed with refrigeration device periphery, and the heat absorption coil pipe of refrigeration device is installed in condensation cavity;Adsorption cavity is installed with adsorption filter mechanism, and adsorption filter mechanism includes adsorption component, cooling component and regeneration component;Adsorption filter mechanism can capture VOCs in incondensable gas by the setting of adsorption component, cooling component and regeneration component;And regeneration component desorbs saturated adsorbent, and desorption gas is returned to permeation cavity secondary condensation through gas guide pipe four, realize the near-zero discharge of VOCs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of environmental protection engineering construction, in particular to the technical field of waste liquid recovery, and specifically relates to a fuel additive production waste liquid recovery equipment. BACKGROUND

[0002] Fuel additives are chemical agents (such as detergents, combustion improvers, etc.) used to improve fuel combustion performance, reduce carbon deposition, or reduce tail gas pollution. In its production process, waste liquid containing volatile organic compounds (VOCs) is generated, mainly from solvent residues, reaction by-products and equipment cleaning liquid. Such waste liquid has the following characteristics: VOCs (such as toluene) have significant harm to the atmospheric environment and human health; the solvent composition has economic value for recycling.

[0003] Currently, the industry mainly uses pervaporation membrane technology to separate VOCs in waste liquid, but there are still the following deficiencies:

[0004] Traditional equipment (such as single-stage permeation tower) only recovers steam by condensation, without treating the residual non-condensable gas (containing a small amount of VOCs), thus causing direct emission of part of the VOCs, resulting in resource waste and pollution. SUMMARY

[0005] The purpose of the present application is to provide a fuel additive production waste liquid recovery equipment to solve the problems raised in the background.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A fuel additive production waste liquid recovery equipment, comprising a recovery tower, a waste liquid storage tank one, a waste liquid storage tank two and a recovery storage tank, the bottom surface of the recovery tower is fixedly installed with a supporting leg, the top end of the recovery tower forms a chimney, and the waste liquid storage tank one is provided with a liquid pump; the recovery tower is fixedly installed with a baffle two and a baffle one from top to bottom in a spaced manner, the baffle two is provided with a vent hole, and the baffle two and the baffle one isolate the recovery tower from top to bottom into an adsorption cavity, a condensation cavity and a permeation cavity;

[0008] The permeation cavity is fixedly installed with a permeation mechanism, the permeation mechanism comprises a feeding mechanism, the feeding end of the feeding mechanism passes through the bottom of the recovery tower and is connected with the water outlet end of the liquid pump in the waste liquid storage tank one, a liquid discharge mechanism is arranged on the inner wall of the permeation cavity, and a gas guiding assembly is arranged between the permeation cavity and the condensation cavity;

[0009] The condensation cavity is fixedly installed with a refrigeration device around, the heat absorption coil of the refrigeration device is installed in the condensation cavity, a conduit three is connected in a through manner at the bottom position of the condensation cavity, and the other end of the conduit three extends into the recovery storage tank;

[0010] The adsorption cavity is provided with an adsorption filtering mechanism, which comprises an adsorption assembly, a cooling assembly and a regeneration assembly.

[0011] Further, the liquid discharge mechanism comprises an annular liquid collecting groove formed in the inner wall of the permeation cavity, and an annular through groove is formed in the inner side of the annular liquid collecting groove near the top to pass through the annular liquid collecting groove and the permeation mechanism.

[0012] The outer periphery of the permeation cavity is fixedly connected with a second conduit passing through the annular liquid collecting groove, and the other end of the second conduit extends into the second waste liquid storage tank.

[0013] Further, the permeation mechanism comprises a disc and a ring coaxially arranged at the middle position of the permeation cavity, the disc is located above the ring and is fixedly installed on the inner wall of the permeation cavity, the width of the ring is greater than the width of the annular through groove, and the ring closes the annular through groove.

[0014] A plurality of circumferentially arrayed isolation plates are fixedly connected between the outer periphery of the disc and the inner side of the ring, and a vapor permeation membrane is fixedly installed between two adjacent isolation plates near the bottom, and the vapor permeation membrane is fixedly connected with the disc and the ring in a closed manner.

[0015] A plurality of through holes are formed in the outer periphery of the ring, the through holes are located above the connection between the vapor permeation membrane and the ring, and the through holes pass through the annular through groove and the annular liquid collecting groove.

[0016] Further, the feed mechanism comprises a hollow shaft rotatably installed in the disc in a penetrating manner, a shunt hollow column is fixedly connected to the top end of the hollow shaft in a penetrating manner, and a plurality of circumferentially arrayed liquid outlets are formed in the bottom surface of the shunt hollow column near the edge.

[0017] The bottom end of the hollow shaft is rotatably penetrated through the bottom of the recovery tower to the lower part of the recovery tower, and a first conduit is rotatably connected through a rotating pipe connecting piece, one end of the first conduit away from the hollow shaft extends into the first waste liquid storage tank and is fixedly connected with the water outlet end of the liquid pump in the first waste liquid storage tank.

[0018] A pulley one is fixedly installed on the outer periphery of the hollow shaft outside the recovery tower.

[0019] Further, a driving assembly is fixedly installed on the bottom surface of the recovery tower, the driving assembly comprises a motor one fixedly installed on the bottom of the recovery tower, a pulley two is fixedly installed on the output shaft end of the motor one, and a belt is installed between the pulley two and the pulley one.

[0020] Furthermore, the gas guiding assembly includes a vacuum pump fixedly installed around the periphery of the recovery tower, with the inlet end of the vacuum pump extending into the permeation chamber and located below the annulus;

[0021] The outlet end of the vacuum pump is fixedly connected to a gas guide pipe, and the end of the gas guide pipe away from the vacuum pump extends into the condensation chamber.

[0022] Furthermore, the adsorption assembly includes a mounting disk II and a mounting ring coaxially disposed in the adsorption chamber. The mounting ring is disposed in the middle of the inner wall of the adsorption chamber, and the outer periphery of the mounting ring slides in contact with the inner wall of the adsorption chamber. A plurality of axially arrayed partitions III are fixedly connected between the outer periphery of the mounting disk II and the inner side of the mounting ring. A fan-shaped mounting area for mounting activated carbon adsorbent is formed between the inner side of the mounting ring, the outer side of the mounting disk II, and two adjacent partitions III.

[0023] A first mounting plate is located directly below the second mounting plate. Multiple connecting rods are fixedly connected between the outer periphery of the first mounting plate and the inner wall of the adsorption chamber. A second motor is fixedly mounted on the bottom surface of the first mounting plate. The output shaft of the second motor rotates through the first mounting plate and is fixedly connected to a rotating shaft. The top end of the rotating shaft is fixedly connected to the bottom surface of the second mounting plate.

[0024] Furthermore, the regeneration assembly includes an air supply device 1 fixedly installed around the periphery of the recycling tower, and a fan-shaped heating box and a fan-shaped flow guide box fixedly installed on the inner wall of the adsorption chamber. The bottom surface of the heating box is an open structure, and the bottom surface of the heating box slides in contact with the top surface of the mounting ring, the mounting plate 2, and the partition plate 3.

[0025] The top surface of the flow guide box is an open structure, and the top surface of the flow guide box slides in contact with the bottom surface of the mounting ring, the second mounting plate and the third partition plate. The flow guide box is provided with an isolation plate that divides it evenly. The isolation plate divides the flow guide box into a flow guide cavity and a cooling cavity. The flow guide cavity is located directly below the heating box.

[0026] The bottom surface of the flow guide box is fixedly connected to a gas guide pipe four that communicates with the flow guide cavity. The other end of the gas guide pipe four extends to the outside of the adsorption cavity and then communicates with the permeation cavity. The connection position between the gas guide pipe four and the permeation cavity is located below the ring.

[0027] The output end of the gas supply device 1 is fixedly connected to the gas guide pipe 3. The end of the gas guide pipe 3 away from the gas supply device 1 passes through the recovery tower into the adsorption chamber and then connects to the bottom of the heating box.

[0028] The angle of the heating box is an integer multiple of the angle of the sector mounting area, and the angle of the flow guide box is twice the angle of the heating box.

[0029] Furthermore, the cooling assembly includes a second air supply device fixedly installed around the periphery of the recovery tower. The output end of the second air supply device is fixedly connected to a second air guide pipe. The other end of the second air guide pipe extends to the adsorption chamber and then through the bottom surface of the flow guide box to the cooling chamber.

[0030] Furthermore, a gas collection hood located in the condensation chamber is fixedly installed at the bottom end of the vent hole of the second partition plate.

[0031] The beneficial effects of this invention are:

[0032] 1. The adsorption filtration mechanism in the adsorption chamber of the present invention, through the arrangement of adsorption components, cooling components and regeneration components, can capture VOCs in non-condensable gas; and the regeneration component desorbs the saturated adsorbent, and the desorbed gas returns to the permeation chamber for secondary condensation through the gas guide pipe, thereby achieving near-zero emission of VOCs.

[0033] 2. In this invention, the drive component is set to drive the splitting hollow column to rotate, realizing rotary feeding, so that the waste liquid is evenly sprayed onto the top of the vapor permeation membrane through multiple outlets distributed in a circumferential array, which is beneficial to improving the permeation effect.

[0034] 3. In the permeation mechanism of the present invention, the disc, the ring, the second isolation plate and the ring form a conical permeation surface. The two adjacent second isolation plates and the vapor permeation membrane between them form an independent flow channel. The flow channel is narrow at the top and wide at the bottom. When the waste liquid flows, it gradually disperses, so the contact with the vapor permeation membrane is more sufficient, which is conducive to the formation of a stable thin liquid film and can improve the VOCs permeation efficiency.

[0035] 4. In the adsorption filtration mechanism, by controlling the second motor to intermittently drive the second mounting plate to rotate 90 degrees counterclockwise, the adsorption filtration mechanism can simultaneously maintain the functions of adsorption filtration and VOCs regeneration and recovery, maintain continuous operation, and improve the recovery efficiency of the present invention. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 yes Figure 1 Enlarged view of section A;

[0039] Figure 3 yes Figure 1 Enlarged view of section B;

[0040] Figure 4 yes Figure 1 Enlarged view of section C;

[0041] Figure 5 This is a three-dimensional schematic diagram of the connection relationship between the permeation mechanism and the recovery tower in this invention;

[0042] Figure 6 yes Figure 5 Enlarged view of section D;

[0043] Figure 7 yes Figure 5 A three-dimensional diagram from another angle;

[0044] Figure 8 yes Figure 7 Enlarged view of section E in the middle;

[0045] Figure 9 This is a three-dimensional schematic diagram of the connection relationship between the adsorption filtration mechanism and the recovery tower in this invention;

[0046] Figure 10 yes Figure 9 A three-dimensional diagram from another angle;

[0047] Figure 11 This is a three-dimensional schematic diagram of the internal structure of the flow guide box in this invention;

[0048] The attached figures are labeled as follows:

[0049] 1-Recovery tower, 2-Support leg, 3-Waste liquid storage tank one, 4-Waste liquid storage tank two, 5-Recovery storage tank, 6-Conduit one, 7-Conduit two, 8-Conduit three, 9-Vacuum pump, 10-Gas guide pipe one, 11-Gas guide pipe two, 12-Refrigeration unit, 13-Heat absorption coil, 14-Baffle one, 15-Gas collection hood, 16-Baffle two, 17-Chimney, 18-Hollow shaft, 19-Pulley one, 20-Belt, 21-Motor one, 22-Pulley two, 23-Diverter hollow column, 26-Electric Machine 2, 27-Mounting Plate 1, 28-Connecting Rod, 29-Gas Guide Pipe 3, 30-Gas Supply Device 1, 31-Gas Supply Device 2, 32-Gas Guide Pipe 4, 33-Mounting Ring, 34-Activated Carbon Adsorbent, 35-Mounting Plate 2, 36-Heating Box, 37-Flow Guide Box, 38-Rotating Shaft, 39-Isolation Plate, 40-Disc, 41-Isolation Plate, 42-Vapor Permeation Membrane, 43-Circular Ring, 44-Through Hole, 45-Annular Through Groove, 46-Liquid Outlet, 47-Annular Liquid Collection Tank, 48-Isolation Plate 3. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1:

[0052] Please see Figure 1 In this embodiment of the invention, a fuel additive production waste liquid recovery device includes a recovery tower 1, a waste liquid storage tank 3, a waste liquid storage tank 4, and a recovery storage tank 5. The bottom surface of the recovery tower 1 is fixedly installed with support legs 2, and the top of the recovery tower 1 forms a chimney 17. A liquid pump is installed in the waste liquid storage tank 3. The recovery tower 1 is fixedly installed with partitions 16 and 14 at intervals from top to bottom. The partitions 16 and 14 are provided with vent holes. The partitions 16 and 14 isolate the recovery tower 1 from top to bottom into an adsorption chamber, a condensation chamber, and a permeation chamber.

[0053] A permeation mechanism is fixedly installed in the permeation chamber. The permeation mechanism includes a feeding mechanism. The feeding end of the feeding mechanism passes through the bottom of the recovery tower 1 and is connected to the liquid pump outlet in the waste liquid storage tank 3. A liquid discharge mechanism is provided on the inner wall of the permeation chamber, and a gas guiding assembly is provided between the permeation chamber and the condensation chamber.

[0054] A refrigeration device 12 is fixedly installed on the periphery of the condensing chamber. The heat absorption coil 13 of the refrigeration device 12 is installed in the condensing chamber. A conduit 3 8 is connected through the bottom of the condensing chamber. The other end of the conduit 3 8 extends into the recovery storage box 5.

[0055] An adsorption filtration mechanism is installed in the adsorption chamber, which includes an adsorption component, a cooling component, and a regeneration component.

[0056] Among them, the refrigeration unit 12 is a conventional vapor compression refrigeration unit, and its heat absorption coil 13 is a general heat exchange component, which is a commonly used equipment in VOCs condensation and recovery processes (such as condensation towers and low-temperature coolers), and is existing technology.

[0057] The gas guiding assembly includes a vacuum pump 9 fixedly installed around the periphery of the recovery tower 1. The inlet end of the vacuum pump 9 extends into the permeation chamber and is located below the annulus 43.

[0058] The outlet end of the vacuum pump 9 is fixedly connected to a gas guide pipe 10, and the end of the gas guide pipe 10 away from the vacuum pump 9 extends into the condensation chamber.

[0059] Among them, the bottom end of the vent hole of the partition 2 16 is fixedly installed with a gas collection hood 15 located in the condensation chamber.

[0060] When using this invention:

[0061] The VOC-containing waste liquid in waste liquid storage tank 3 is preheated to 50–60°C (below the boiling point of the solvent, such as toluene at 110°C). The waste liquid is continuously guided to the permeation mechanism through the feeding mechanism by the liquid pump in waste liquid storage tank 3. In the permeation mechanism, VOC molecules volatilize and pass through the permeation mechanism by dissolution-diffusion, thereby desorbing into vapor at the lower side of the permeation mechanism. The waste liquid without VOCs flows to the discharge mechanism, which guides the waste liquid to waste liquid storage tank 4 for further treatment. In the gas guiding assembly, the vacuum pump 9 maintains a negative pressure in the space below the permeation mechanism, which can accelerate vapor permeation and guide the vapor to the condensation chamber in conjunction with the gas guiding pipe 10. The vacuum pump 9 in the gas guiding assembly maintains a negative pressure in the permeation chamber, accelerates VOC desorption, reduces the operating temperature of the vapor permeation membrane 42 (it can operate at 50-60°C), and reduces energy consumption.

[0062] In the condensation chamber, the heat absorption coil 13 absorbs heat, thereby condensing the steam entering the condensation chamber into a liquid state, and then flowing to the recovery storage box 5 through the conduit 3 8 to complete the recovery of VOCs; at the same time, there are also non-condensable gases in the steam, which flow to the adsorption chamber through the vent holes of the gas collection hood 15 and the partition 2 16.

[0063] In the adsorption chamber, non-condensable gas is discharged through chimney 17 after passing through the adsorption component. The adsorption component absorbs VOCs in the non-condensable gas. The regeneration component disables the adsorption function of the adsorption component, thereby desorbing the absorbed VOCs and redirecting the desorbed VOCs back into the permeation chamber for condensation and recovery. The cooling component is used to restore the adsorption and filtration function of the failed adsorption component.

[0064] The adsorption filtration mechanism in the adsorption chamber of the present invention, through the arrangement of adsorption components, cooling components and regeneration components, can capture VOCs in non-condensable gas; and the regeneration component desorbs the saturated adsorbent, and the desorbed gas returns to the permeation chamber for secondary condensation through the gas guide pipe 32, thereby achieving near-zero emission of VOCs.

[0065] Example 2:

[0066] Please see Figures 1-8 Based on Embodiment 1, the drainage mechanism includes an annular collection groove 47 formed in the inner wall of the permeation chamber, and an annular through groove 45 formed on the inner side of the annular collection groove 47 near the top, which connects the annular collection groove 47 and the permeation mechanism.

[0067] The periphery of the permeation chamber is fixedly connected to a conduit 7 that communicates with the annular liquid collection tank 47, and the other end of the conduit 7 extends into the waste liquid storage tank 4.

[0068] The permeation mechanism includes a disc 40 and a ring 43 coaxially disposed in the middle of the permeation chamber. The disc 40 is located above the ring 43 and is fixedly installed on the inner wall of the permeation chamber. The width of the ring 43 is greater than the width of the annular groove 45, and the ring 43 closes the annular groove 45.

[0069] Multiple circumferentially arrayed isolation plates 41 are fixedly connected between the outer periphery of the disk 40 and the inner side of the ring 43. A vapor permeation membrane 42 is fixedly installed between two adjacent isolation plates 41 near the bottom, and the vapor permeation membrane 42 is fixedly connected to the disk 40 and the ring 43 in a closed manner. The disk 40, the ring 43, the isolation plates 41 and the ring 43 form a conical permeation surface.

[0070] The outer periphery of the ring 43 is provided with a plurality of circumferentially arrayed through holes 44. The through holes 44 are located above the connection between the vapor permeation membrane 42 and the ring 43, and the through holes 44 are connected to the annular liquid collection tank 47 through the annular through groove 45.

[0071] The feeding mechanism includes a hollow shaft 18 that is rotatably installed in a disc 40. A diversion hollow column 23 is fixedly connected to the top of the hollow shaft 18. Multiple circumferentially arrayed liquid outlets 46 are opened on the bottom surface of the diversion hollow column 23 near the edge.

[0072] The bottom end of the hollow shaft 18 rotates through the bottom of the recovery tower 1 to the bottom of the recovery tower 1 and is rotatably connected to the conduit 6 through the rotating pipe connector. The end of the conduit 6 away from the hollow shaft 18 extends into the waste liquid storage tank 3 and is fixedly connected to the outlet end of the liquid pump in the waste liquid storage tank 3.

[0073] A pulley 19 located outside the recovery tower 1 is fixedly installed on the periphery of the hollow shaft 18.

[0074] Among them, vapor permeation membrane 42 belongs to the well-known pervaporation membrane materials (such as polydimethylsiloxane PDMS, zeolite molecular sieve membrane, etc.). Its "dissolution-diffusion" separation mechanism is a mature technology and is widely used in industry for organic matter / water separation (such as ethanol dehydration and phenol recovery).

[0075] The liquid pump guides the preheated waste liquid into the hollow shaft 18 through the conduit 6. After entering the split hollow column 23, it flows out evenly to the upper surface of the permeation mechanism through multiple outlets 46. The falling waste liquid flows along the surface of the vapor permeation membrane 42 at the top, thereby forming a liquid film on the vapor permeation membrane 42. During the flow, VOCs molecules permeate to the bottom of the vapor permeation membrane 42. The disc 40, the ring 43, the second isolation plate 41 and the ring 43 form a conical permeation surface. The two adjacent second isolation plates 41 and the vapor permeation membrane 42 between them form an independent flow channel. This flow channel is narrow at the top and wide at the bottom. The waste liquid gradually disperses during the flow, which makes the contact with the vapor permeation membrane 42 more sufficient, which is conducive to the formation of a stable thin liquid film and can improve the VOCs permeation efficiency.

[0076] In the drainage mechanism: the waste liquid from VOC removal enters the annular collection tank 47 through the through hole 44 and the annular through groove 45, and is then collected in the waste liquid storage tank 4 through the second conduit 7 for further processing.

[0077] The bottom surface of the recycling tower 1 is fixedly installed with a drive assembly, which includes a motor 21 fixedly installed at the bottom of the recycling tower 1. A pulley 22 is fixedly installed at the output shaft end of the motor 21, and a belt 20 is installed between the pulley 22 and the pulley 19.

[0078] In the drive assembly, motor 21 drives the hollow shaft 18 to rotate via pulley 22, belt 20 and pulley 19, so that the diversion hollow column 23 keeps rotating when feeding, so that the waste liquid flowing out of multiple outlets 46 can flow more evenly to the top of each vapor permeation membrane 42, further improving the permeation recovery effect.

[0079] In this invention, by setting up a driving component, the flow splitting hollow column 23 is driven to rotate, realizing rotary feeding, so that the waste liquid is evenly sprayed onto the top of the vapor permeation membrane 42 through multiple liquid outlets 46 distributed in a circumferential array, which is beneficial to improving the permeation effect.

[0080] Example 3:

[0081] Please see Figure 1 , Figure 3 , Figure 4 and Figures 9-11 Based on Example 2, the adsorption assembly includes a mounting disk 35 and a mounting ring 33 coaxially disposed in the adsorption chamber. The mounting ring 33 is disposed in the middle of the inner wall of the adsorption chamber, and the outer periphery of the mounting ring 33 slides in contact with the inner wall of the adsorption chamber. A plurality of axially arrayed partitions 48 are fixedly connected between the outer periphery of the mounting disk 35 and the inner side of the mounting ring 33. A fan-shaped mounting area for mounting activated carbon adsorbent 34 is formed between the inner side of the mounting ring 33, the outer side of the mounting disk 35, and two adjacent partitions 48.

[0082] A mounting plate 27 is located directly below mounting plate 25. Multiple connecting rods 28 are fixedly connected between the outer periphery of mounting plate 27 and the inner wall of the adsorption chamber. A motor 26 is fixedly installed on the bottom surface of mounting plate 27. The output shaft of motor 26 rotates through mounting plate 27 and is fixedly connected to a rotating shaft 38. The top end of the rotating shaft 38 is fixedly connected to the bottom surface of mounting plate 25.

[0083] The regeneration component includes an air supply device 30 fixedly installed on the periphery of the recovery tower 1, a fan-shaped heating box 36 and a fan-shaped flow guide box 37 fixedly installed on the inner wall of the adsorption chamber. The bottom surface of the heating box 36 is an open structure, and the bottom surface of the heating box 36 slides in contact with the top surface of the mounting ring 33, the mounting plate 35 and the partition plate 48.

[0084] The top surface of the flow guide box 37 is an open structure, and the top surface of the flow guide box 37 slides in contact with the bottom surface of the mounting ring 33, the second mounting plate 35 and the third partition plate 48. The flow guide box 37 is provided with an isolation plate 39 that divides it evenly. The isolation plate 39 divides the flow guide box 37 into a flow guide cavity and a cooling cavity. The flow guide cavity is located directly below the heating box 36.

[0085] The bottom surface of the flow guide box 37 is fixedly connected to the air guide pipe 32, which communicates with the flow guide cavity. The other end of the air guide pipe 32 extends to the outside of the adsorption cavity and then communicates with the permeation cavity. The connection position between the air guide pipe 32 and the permeation cavity is located below the ring 43.

[0086] The output end of the gas supply device 30 is fixedly connected to the gas guide pipe 29. The end of the gas guide pipe 29 away from the gas supply device 30 passes through the recovery tower 1 into the adsorption chamber and then connects to the bottom of the heating box 36.

[0087] The angle of the heating box 36 is an integer multiple of the angle of the sector installation area, and the angle of the guide box 37 is twice the angle of the heating box 36.

[0088] The cooling assembly includes an air supply device 2 31 fixedly installed on the periphery of the recovery tower 1. The output end of the air supply device 2 31 is fixedly connected to an air guide pipe 2 11. The other end of the air guide pipe 2 11 extends to the adsorption chamber and then connects to the cooling chamber through the bottom surface of the flow box 37.

[0089] Among them, gas supply device 1 30 and gas supply device 2 31 are standard industrial gas supply equipment (such as nitrogen generators and air compressors), which are general-purpose purchased components and are existing technologies.

[0090] For better understanding, in this embodiment, the number of sector-shaped installation areas is determined to be 12, that is, the angle of each sector-shaped installation area is 30 degrees; the angle of the heating box 36 is 90 degrees, and the angle of the guide box 37 is 180 degrees of the hollow axis;

[0091] Therefore, the activated carbon adsorbent 34 in the 6 sector-shaped installation areas (working areas) is in the adsorption and filtration state, the activated carbon adsorbent 34 in the 3 sector-shaped installation areas (regeneration areas) is in the VOCs regeneration state (the activated carbon adsorbent 34 loses its function of adsorbing VOCs), and the activated carbon adsorbent 34 in the remaining 3 sector-shaped installation areas (recovery areas) is in the cooling and recovery state.

[0092] During operation, the non-condensable gas in the condensation chamber passes through the working area and is discharged through the chimney 17. The VOCs in the gas are absorbed. After the activated carbon adsorbent 34 in the working area absorbs the gas to a certain extent, the control motor 26 drives the mounting plate 35 to rotate counterclockwise by 90 degrees through the rotating shaft 38. At this time, the heating box 36 and the guide cavity of the guide box 37 form a sealed space that surrounds the three activated carbon adsorbents 34. The cooling cavity of the guide box 37 surrounds the three activated carbon adsorbents 34.

[0093] In the regeneration component, the gas supply device 30 introduces hot nitrogen into the heating box 36 through the gas guide pipe 29. The VOCs absorbed by the three activated carbon adsorbents 34 are desorbed and blown into the flow guide chamber, and then flow into the permeation chamber through the gas guide pipe 32, thereby achieving a second condensation and recovery.

[0094] After the three activated carbon adsorbents 34 that have desorbed VOCs rotate to the top of the cooling chamber, the second gas supply device 31 in the cooling assembly introduces room temperature nitrogen into the cooling chamber through the second gas pipe 11 to cool down the three activated carbon adsorbents 34 after desorbing VOCs, thereby restoring the adsorption function. The room temperature nitrogen passes through the activated carbon adsorbents 34 and is discharged from the chimney 17.

[0095] Therefore, by intermittently driving the mounting plate 35 to rotate 90 degrees counterclockwise by the motor 26, the adsorption filtration mechanism can simultaneously maintain the functions of adsorption filtration and VOCs regeneration and recovery, maintain continuous operation, and improve the recovery efficiency of the present invention.

[0096] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A waste liquid recovery device for fuel additive production, comprising a recovery tower (1), a first waste liquid storage tank (3), a second waste liquid storage tank (4), and a recovery storage tank (5), wherein the bottom surface of the recovery tower (1) is fixedly installed with support legs (2), the top of the recovery tower (1) forms a chimney (17), and a liquid pump is provided in the first waste liquid storage tank (3); characterized in that, The recovery tower (1) is fixedly installed with partition two (16) and partition one (14) at intervals from top to bottom. Partition two (16) is provided with ventilation holes. Partition two (16) and partition one (14) isolate the recovery tower (1) from top to bottom into an adsorption chamber, a condensation chamber and a permeation chamber. A permeation mechanism is fixedly installed in the permeation chamber. The permeation mechanism includes a feeding mechanism. The feeding end of the feeding mechanism passes through the bottom of the recovery tower (1) and is connected to the liquid pump outlet in the waste liquid storage tank (3). A liquid discharge mechanism is provided on the inner wall of the permeation chamber, and a gas guiding component is provided between the permeation chamber and the condensation chamber. A refrigeration device (12) is fixedly installed on the periphery of the condensing cavity. The heat absorption coil (13) of the refrigeration device (12) is installed in the condensing cavity. A conduit three (8) is connected through the bottom of the condensing cavity. The other end of the conduit three (8) extends into the recycling storage box (5). The adsorption chamber is equipped with an adsorption filtration mechanism, which includes an adsorption component, a cooling component, and a regeneration component. The drainage mechanism includes an annular collection groove (47) formed in the inner wall of the permeation chamber. An annular through groove (45) is formed on the inner side of the annular collection groove (47) near the top, which connects the annular collection groove (47) and the permeation mechanism. The periphery of the permeation cavity is fixedly connected to a conduit 2 (7) that communicates with the annular liquid collection tank (47), and the other end of the conduit 2 (7) extends into the waste liquid storage tank 2 (4); The permeation mechanism includes a disc (40) and a ring (43) coaxially disposed in the middle of the permeation chamber. The disc (40) is located above the ring (43) and is fixedly installed on the inner wall of the permeation chamber. The width of the ring (43) is greater than the width of the annular groove (45), and the ring (43) closes the annular groove (45). Multiple circumferentially arrayed isolation plates (41) are fixedly connected between the outer periphery of the disk (40) and the inner side of the ring (43). A vapor permeation membrane (42) is fixedly installed between two adjacent isolation plates (41) near the bottom. The vapor permeation membrane (42) is fixedly connected to the disk (40) and the ring (43) in a closed manner. The outer periphery of the ring (43) is provided with a plurality of circumferentially arrayed through holes (44), the through holes (44) are located above the connection between the vapor permeation membrane (42) and the ring (43), and the through holes (44) are connected to the annular liquid collection tank (47) through the annular through groove (45); The adsorption assembly includes a mounting disk 2 (35) and a mounting ring (33) coaxially disposed in the adsorption chamber. The mounting ring (33) is disposed in the middle of the inner wall of the adsorption chamber, and the outer periphery of the mounting ring (33) slides in contact with the inner wall of the adsorption chamber. Multiple axially arrayed partition plates 3 (48) are fixedly connected between the outer periphery of the mounting disk 2 (35) and the inner side of the mounting ring (33). A fan-shaped mounting area for mounting activated carbon adsorbent (34) is formed between the inner side of the mounting ring (33), the outer side of the mounting disk 2 (35), and two adjacent partition plates 3 (48). A mounting plate 1 (27) is provided directly below the mounting plate 2 (35). Multiple connecting rods (28) are fixedly connected between the outer periphery of the mounting plate 1 (27) and the inner wall of the adsorption chamber. A motor 2 (26) is fixedly installed on the bottom surface of the mounting plate 1 (27). The output shaft of the motor 2 (26) rotates through the mounting plate 1 (27) and is fixedly connected to a rotating shaft (38). The top end of the rotating shaft (38) is fixedly connected to the bottom surface of the mounting plate 2 (35). The regeneration assembly includes an air supply device (30) fixedly installed on the periphery of the recycling tower (1) and a fan-shaped heating box (36) and a fan-shaped flow guide box (37) fixedly installed on the inner wall of the adsorption chamber. The bottom surface of the heating box (36) is an open structure, and the bottom surface of the heating box (36) slides in contact with the top surface of the mounting ring (33), the mounting plate (35) and the partition plate (48). The top surface of the flow guide box (37) is an open structure, and the top surface of the flow guide box (37) slides in contact with the bottom surface of the mounting ring (33), the second mounting plate (35) and the third partition plate (48). The flow guide box (37) is provided with an isolation plate (39) that divides it evenly. The isolation plate (39) divides the flow guide box (37) into a flow guide cavity and a cooling cavity. The flow guide cavity is located directly below the heating box (36). The bottom surface of the flow guide box (37) is fixedly connected to a four-way air guide pipe (32) that communicates with the flow guide cavity. The other end of the four-way air guide pipe (32) extends to the outside of the adsorption cavity and then communicates with the permeation cavity. The connection position between the four-way air guide pipe (32) and the permeation cavity is located below the ring (43). The output end of the gas supply device 1 (30) is fixedly connected to the gas guide pipe 3 (29). The end of the gas guide pipe 3 (29) away from the gas supply device 1 (30) passes through the recovery tower (1) into the adsorption chamber and then connects with the bottom surface of the heating box (36). The angle of the heating box (36) is an integer multiple of the angle of the fan-shaped installation area, and the angle of the guide box (37) is twice the angle of the heating box (36).

2. The fuel additive production waste liquid recovery equipment according to claim 1, characterized in that, The feeding mechanism includes a hollow shaft (18) that is rotatably mounted in the disc (40). A diversion hollow column (23) is fixedly connected to the top of the hollow shaft (18). The bottom surface of the diversion hollow column (23) has multiple circumferentially arrayed liquid outlets (46) near the edge. The bottom end of the hollow shaft (18) rotates through the bottom of the recovery tower (1) to the bottom of the recovery tower (1), and then is rotatably connected to the conduit (6) through the rotating pipe connector. The end of the conduit (6) away from the hollow shaft (18) extends into the waste liquid storage tank (3) and is fixedly connected to the outlet end of the liquid pump in the waste liquid storage tank (3). The hollow shaft (18) is fixedly mounted with a pulley (19) located outside the recovery tower (1).

3. The fuel additive production waste liquid recovery equipment according to claim 2, characterized in that, A drive assembly is fixedly installed on the bottom surface of the recycling tower (1). The drive assembly includes a motor (21) fixedly installed at the bottom of the recycling tower (1). A pulley (22) is fixedly installed at the output shaft end of the motor (21). A belt (20) is installed between the pulley (22) and the pulley (19).

4. The fuel additive production waste liquid recovery equipment according to claim 1, characterized in that, The gas guiding assembly includes a vacuum pump (9) fixedly installed around the periphery of the recovery tower (1), the inlet end of the vacuum pump (9) extending into the permeation chamber and located below the annulus (43); The outlet end of the vacuum pump (9) is fixedly connected to a gas guide pipe (10), and the end of the gas guide pipe (10) away from the vacuum pump (9) extends into the condensation chamber.

5. The fuel additive production waste liquid recovery equipment according to claim 4, characterized in that, The cooling assembly includes an air supply device 2 (31) fixedly installed on the periphery of the recovery tower (1). The output end of the air supply device 2 (31) is fixedly connected to an air guide pipe 2 (11). The other end of the air guide pipe 2 (11) extends to the adsorption chamber and then connects to the cooling chamber through the bottom surface of the flow guide box (37).

6. The fuel additive production waste liquid recovery equipment according to claim 1, characterized in that, A gas collecting hood (15) located in the condensation chamber is fixedly installed at the bottom of the vent hole of the second partition (16).

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