A 4-chloroacetoacetic acid ethyl tail gas absorption treatment device

Abstract

The present invention is applicable to the technical field of tail gas treatment, and provides a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device, including a base, an adsorption tank and a liquid washing tank are also connected by an airflow pipe, and a purification module is installed on the airflow pipe; a distribution pipe is rotatably installed on the inner side of the liquid washing tank, and a dirt-isolating mesh plate is also provided on the inner side of the liquid washing tank, and a storage tank is connected to the lower side of the liquid washing tank through a return pipe, and a filter cartridge is fixed in the storage tank; a spray assembly is used to extract the liquid at the bottom of the outer space of the filter cartridge and transport it to the top of the dirt-isolating mesh plate; an outer frame is rotatably installed on the inner side of the adsorption tank, and mesh sealing plates are fixed at the front and rear openings of the outer frame, and the inner side of the outer frame is filled with activated carbon; a driving assembly is used to drive the distribution pipe to rotate continuously, and drive the outer frame to swing back and forth. The present invention improves the purification treatment effect and efficiency of harmful gases in tail gas by the coordinated operation of the rotating distribution pipe and the reciprocating swinging outer frame, combined with high-efficiency liquid washing and adsorption filtration technology.

Description

Technical Field

[0001] The invention belongs to the technical field of tail gas treatment, and in particular relates to a 4-chloroacetoethyl ethyl tail gas absorption treatment device. Background Art

[0002] The tail gas produced from the production of ethyl 4-chloroacetoacetate mainly contains the following types of gases:

[0003] Hydrogen chloride (HCl): In the synthesis process of ethyl 4-chloroacetoacetate, especially in the chlorination reaction stage, hydrogen chloride gas is generated. This is a colorless gas with a pungent odor, which is harmful to the human body and the environment.

[0004] Dichloromethane (CH2Cl2): Dichloromethane is a commonly used solvent in the synthesis of ethyl 4-chloroacetoacetate, and some of it may evaporate into the tail gas during the reaction. Dichloromethane is also a potentially hazardous volatile organic compound.

[0005] In addition, the tail gas may also contain trace amounts of other impurities, such as incompletely reacted raw materials, reaction by-products, etc.

[0006] In order to reduce the harm to the environment and human body, it is necessary to effectively treat the tail gas produced by the production of ethyl 4-chloroacetoacetate. Common tail gas treatment methods include absorption, adsorption, condensation, etc., which aim to remove harmful substances in the tail gas or convert them into harmless substances before discharge.

[0007] In existing tail gas treatment devices, each treatment link generally operates independently, lacks effective collaboration, and the layout of spraying and adsorption structures is single, which affects the purification effect and efficiency of harmful gases in the tail gas.

[0008] Therefore, in view of the above situation, it is urgent to develop a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device to overcome the shortcomings in current practical applications. Summary of the invention

[0009] The object of the present invention is to provide a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device, aiming to solve the problems mentioned in the above background technology.

[0010] The present invention is achieved in that a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device comprises a base and a frame fixed on the base, and further comprises:

[0011] An adsorption tank and a liquid washing tank, wherein the adsorption tank and the liquid washing tank are both fixed on the frame, and the adsorption tank and the liquid washing tank are also connected by an air flow pipe, and a purification module for filtering and purifying the tail gas is also installed on the air flow pipe;

[0012] A diffusion pipe is rotatably installed on the inner side of the liquid washing tank, and a plurality of tail gas holes are opened on the diffusion pipe. The end of the diffusion pipe away from the adsorption tank is connected to the tail gas inlet pipe. An inverted U-shaped dirt-isolating mesh plate is also provided on the inner side of the liquid washing tank. The diffusion pipe is located on the inner side of the dirt-isolating mesh plate, and the end of the airflow pipe away from the adsorption tank is connected to the outer space of the dirt-isolating mesh plate. The lower side of the liquid washing tank is connected to a storage tank through a liquid return pipe, and a filter cartridge is fixed in the storage tank.

[0013] A spray assembly, which is used to extract the liquid at the bottom of the outer space of the filter cartridge and transport it to the top of the dirt-isolating mesh plate;

[0014] An outer frame is rotatably mounted on the inner side of the adsorption tank, mesh sealing plates are fixed at the front and rear openings of the outer frame, the inner side of the outer frame is filled with activated carbon, the end of the air flow pipe away from the liquid washing tank is connected to the front space of the outer frame, and the rear side of the adsorption tank is also connected to an exhaust gas outlet pipe, which is connected to the rear space of the outer frame;

[0015] A driving assembly is in driving connection with both the diffusion tube and the outer frame, and is used to drive the diffusion tube to rotate continuously and drive the outer frame to swing back and forth.

[0016] A further technical solution is that the end of the diffusion pipe away from the adsorption tank is an open structure, and the end of the diffusion pipe away from the adsorption tank is also rotatably connected to the end of the liquid washing tank. The open end of the diffusion pipe is rotatably connected to the exhaust gas inlet pipe, and the exhaust gas inlet pipe is also fixedly connected to the liquid washing tank through an L-shaped fixing plate.

[0017] A further technical solution is that the filter cartridge adopts a conical structure with a larger top and a smaller bottom, the upper end of the filter cartridge is fixedly connected to the inner top outer ring of the storage tank, the lower end of the filter cartridge is fixedly connected to the middle of the inner bottom of the storage tank, and the bottom of the storage tank is also provided with a cleaning port connected to the inner space of the filter cartridge; the top of the storage tank is also provided with a liquid replenishment port.

[0018] A further technical solution is that the spray assembly includes a liquid supply pipe, a liquid distribution pipe, a liquid extraction pump, a branch pipe and a nozzle. The liquid extraction pump is fixed on the storage tank, the inlet of the liquid extraction pump is connected to the bottom of the outer space of the filter cartridge, the outlet of the liquid extraction pump is connected to the liquid supply pipe, the other end of the liquid supply pipe is connected to the liquid distribution pipe installed on the top of the liquid washing tank, a plurality of branch pipes are evenly distributed and connected to the lower side of the liquid distribution pipe, the lower end of the branch pipe extends to the top of the dirt isolation mesh, and a nozzle is also installed at the lower end of the branch pipe.

[0019] A further technical solution is that the driving assembly includes a gear, a stabilizing frame, a top support shaft, a swing plate, a swing rod, a dual-output motor, an arc-shaped rack, a gear shaft, an adjustable telescopic rod, a toggle shaft and a circular ring sleeve. Two stabilizing frames are provided between the adsorption tank and the liquid washing tank. The lower ends of the two stabilizing frames are fixedly connected to the base. A top support shaft is rotatably installed between the upper parts of the two stabilizing frames. The top support shaft is respectively fixed with a swing plate and a swing rod. A waist-shaped hole is opened on the swing rod. One of the stabilizing frames is fixedly connected to the end of the adsorption tank, and a double support is fixed between the other stabilizing frame and the liquid washing tank. Output motor, one side output shaft of the dual output motor is fixedly connected to the end of the spreading tube, the other side output shaft of the dual output motor is fixed with an adjustable telescopic rod, the side of the end of the adjustable telescopic rod away from the dual output motor is fixed with a toggle shaft, a circular ring sleeve slidably connected to the waist-shaped hole is rotatably mounted on the toggle shaft, an arc-shaped arc rack is fixed to the lower end of the swing plate, a gear shaft is rotatably mounted on the end of the adsorption tank close to the liquid washing tank, the gear shaft is also fixedly connected to the outer frame, the gear shaft is also rotatably connected to the stabilizing frame, and a gear meshingly connected to the arc rack is fixed on the gear shaft.

[0020] A further technical solution is that the two ends of the airflow pipe are respectively connected to the middle position of the front side of the adsorption tank and the liquid washing tank, and an inclined tube is symmetrically fixed to the end of the airflow pipe close to the adsorption tank. A one-way valve is also installed on the inner side of the airflow pipe. The one-way valve is used to discharge the air inside the airflow pipe into the inner cavity of the adsorption tank through the inclined tube and is blocked in the reverse direction; the exhaust gas outlet pipe is connected to the middle of the rear side of the adsorption tank, and the outer wall of the outer frame is sealed and rotatably connected to the inner wall of the adsorption tank.

[0021] According to a further technical solution, a liquid baffle is fixed to the lower part of the inner cavity of the airflow tube.

[0022] According to a further technical solution, the inner cavity of the airflow tube has a circular cross-section; and the liquid baffle is in the shape of a semi-disc that matches the inner cavity of the airflow tube.

[0023] A further technical solution is that the purification module includes a filter tank, a plug plate, a handle, a purification core, a top sealing plate, a ball seat and an elastic retractable ball. The filter tank is fixed on the airflow pipe between the liquid baffle plate and the adsorption tank. A plurality of plug plates are evenly arranged in the filter tank. A plug hole for inserting the plug plate is opened on the top of the filter tank. A top sealing plate is also fixed on the upper part of the plug plate. A handle is fixed on the top of the plug plate. A purification core is installed on the plug plate. Positioning grooves are opened on both sides of the lower part of the plug plate. Ball seats are fixed on both sides of the plug plate at the bottom of the filter tank. Elastic retractable balls that can cooperate with the positioning grooves are elastically and retractably installed on the ball seat.

[0024] According to a further technical solution, the purification core adopts a molecular sieve; when the elastic telescopic ball card is located on the positioning groove, the purification core is completely located in the inner cavity of the filter tank, and the top sealing plate abuts and seals on the top of the socket.

[0025] The 4-chloroacetoacetic acid ethyl tail gas absorption treatment device provided by the present invention has the following beneficial effects:

[0026] The driving assembly can drive the diffusion pipe to rotate continuously and the outer frame to swing back and forth, so as to realize the orderly and coordinated operation of the adsorption tank and the liquid washing tank; the exhaust gas is transported to the diffusion pipe through the exhaust gas inlet pipe, and then discharged through the exhaust hole. The spray assembly extracts the liquid at the bottom of the outer space of the filter cartridge and transports it to the top of the dirt-isolating mesh plate. The liquid is distributed on the dirt-isolating mesh plate, and falls through the holes of the dirt-isolating mesh plate and is scattered by the rotating diffusion pipe, which improves the overall effect of liquid washing to remove impurities and dissolve and neutralize harmful gases such as hydrogen chloride in the exhaust gas. The fallen liquid is collected in the storage tank, and after being filtered by the filter cartridge, it can be repeatedly lifted and reused by the spray assembly. The exhaust gas treated by the liquid washing tank is discharged through the airflow pipe. The purification module on the airflow pipe can filter and purify the exhaust gas, adsorb harmful gases such as hydrogen chloride and dichloromethane in the exhaust gas, and then the exhaust gas enters the adsorption tank, and the limiting driving component can drive the outer frame to swing back and forth, which can disturb the input exhaust gas, so that the exhaust gas can fully react with the activated carbon to remove the remaining organic impurities, and finally the treated exhaust gas is discharged through the exhaust outlet pipe.

[0027] In summary, the present invention improves the purification effect and efficiency of harmful gases in exhaust gas by coordinating the operation of the rotating diffusion tube and the reciprocating swinging outer frame in combination with high-efficiency liquid washing and adsorption filtration technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device provided in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the rear-view angle structure;

[0030] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0031] Figure 4 A schematic diagram of the main cross-sectional structure of the liquid washing tank and the storage tank in the 4-chloroacetoacetic acid ethyl tail gas absorption treatment device provided in an embodiment of the present invention;

[0032] Figure 5 for Figure 4 A schematic side cross-sectional view of the middle diffusion pipe and the dirt isolation screen;

[0033] Figure 6 A schematic diagram of a left-side cross-sectional structure of an adsorption tank portion in a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device provided in an embodiment of the present invention;

[0034] Figure 7 A partial cross-sectional structural schematic diagram of the gas flow pipe portion in the ethyl 4-chloroacetoacetate tail gas absorption treatment device provided in an embodiment of the present invention;

[0035] Figure 8 for Figure 7 A schematic diagram of the main cross-sectional structure of the purification module;

[0036] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure of part B;

[0037] Fig.10 for Figure 8 Schematic diagram of the enlarged structure of part C.

[0038] In the figure: 1-base, 2-frame, 3-adsorption tank, 4-airflow pipe, 5-purification module, 6-gear, 7-stable frame, 8-top support shaft, 9-swing plate, 10-swing rod, 11-reinforcement block, 12-dual output motor, 13-liquid supply pipe, 14-liquid distribution pipe, 15-liquid washing tank, 16-L-shaped fixing plate, 17-exhaust inlet pipe, 18-return liquid pipe, 19-storage tank, 20-cleaning port, 21-arc rack, 22-liquid pump, 23-distribution pipe, 24-exhaust outlet pipe, 25-waist-shaped hole, 26-gear Axle, 27-adjustable telescopic rod, 28-fastening bolt, 29-sliding shaft, 30-circular sleeve, 31-branch pipe, 32-nozzle, 33-dirt isolation mesh plate, 34-liquid replenishment port, 35-exhaust hole, 36-filter cartridge, 37-outer frame, 38-mesh sealing plate, 39-activated carbon, 40-inclined tube, 41-check valve, 42-liquid retaining plate, 43-filter tank, 44-insert plate, 45-handle, 46-purification core, 47-jack, 48-top sealing plate, 49-ball seat, 50-elastic telescopic ball, 51-positioning groove. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0041] like Figure 1-6 As shown, a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device provided by one embodiment of the present invention includes a base 1 and a frame 2 fixed on the base 1, and also includes:

[0042] The adsorption tank 3 and the liquid washing tank 15 are fixed on the frame 2, and the adsorption tank 3 and the liquid washing tank 15 are also connected through the air flow pipe 4, and the air flow pipe 4 is also equipped with a purification module 5 for filtering and purifying the exhaust gas;

[0043] A diffusion pipe 23 is rotatably mounted on the inner side of the liquid washing tank 15, and a plurality of tail gas holes 35 are opened on the diffusion pipe 23. The end of the diffusion pipe 23 away from the adsorption tank 3 is connected to the tail gas inlet pipe 17. An inverted U-shaped dirt-isolating mesh plate 33 is also provided on the inner side of the liquid washing tank 15. The diffusion pipe 23 is located on the inner side of the dirt-isolating mesh plate 33, and the end of the air flow pipe 4 away from the adsorption tank 3 is connected to the outer space of the dirt-isolating mesh plate 33. The lower side of the liquid washing tank 15 is connected to the storage tank 19 through the liquid return pipe 18, and a filter cartridge 36 is fixed in the storage tank 19.

[0044] A spray assembly, which is used to extract the liquid at the bottom of the outer space of the filter cartridge 36 and transport it to the top of the dirt-isolating mesh plate 33;

[0045] An outer frame 37 is rotatably mounted on the inner side of the adsorption tank 3, mesh sealing plates 38 are fixed to the front and rear openings of the outer frame 37, the inner side of the outer frame 37 is filled with activated carbon 39, the end of the air flow pipe 4 away from the liquid washing tank 15 is connected to the front space of the outer frame 37, and the rear side of the adsorption tank 3 is also connected to the tail gas outlet pipe 24, which is connected to the rear space of the outer frame 37;

[0046] A driving assembly is in driving connection with the diffusion tube 23 and the outer frame 37, and is used to drive the diffusion tube 23 to rotate continuously and drive the outer frame 37 to swing back and forth.

[0047] In the embodiment of the present invention, the driving assembly can drive the diffusion pipe 23 to rotate continuously and the outer frame 37 to swing back and forth, so as to realize the orderly and coordinated operation of the adsorption tank 3 and the liquid washing tank 15; the tail gas is transported to the diffusion pipe 23 through the tail gas inlet pipe 17, and then discharged through the tail gas hole 35, and the spray assembly extracts the liquid at the bottom of the outer space of the filter cartridge 36 and transports it to the top of the dirt-isolating mesh plate 33, and the liquid is distributed on the dirt-isolating mesh plate 33, and falls through the holes of the dirt-isolating mesh plate 33 and is scattered by the rotating diffusion pipe 23, which improves the effect of liquid washing to remove impurities and dissolve and neutralize harmful gases such as hydrogen chloride in the tail gas. The fallen liquid is collected in the storage tank 19, and after being filtered by the filter cartridge 36, it can be repeatedly lifted and utilized by the spray assembly. The exhaust gas treated by the liquid washing tank 15 is discharged through the airflow pipe 4. The purification module 5 on the airflow pipe 4 can filter and purify the exhaust gas, adsorb harmful gases such as hydrogen chloride and dichloromethane in the exhaust gas, and then the exhaust gas enters the adsorption tank 3, and the limiting driving component can drive the outer frame 37 to swing back and forth, which can disturb the input exhaust gas, so that the exhaust gas can fully react with the activated carbon 39 to remove the remaining organic impurities, and finally the treated exhaust gas is discharged through the exhaust gas outlet pipe 24.

[0048] It should be noted that the liquid in the storage tank 19 can be water or alkali solution. Water can dissolve harmful gases such as hydrogen chloride in the tail gas. Alkali solution such as sodium hydroxide or potassium hydroxide solution can react with acidic gases (such as hydrogen chloride) in the tail gas to generate harmless salts and water.

[0049] like Figure 1-7 As shown, as a preferred embodiment of the present invention, the end of the diffusion pipe 23 away from the adsorption tank 3 is an open structure, and the end of the diffusion pipe 23 away from the adsorption tank 3 is also rotatably connected to the end of the liquid washing tank 15 to ensure the stability of the diffusion pipe 23. The open end of the diffusion pipe 23 is rotatably connected to the exhaust gas inlet pipe 17, and the exhaust gas inlet pipe 17 is also fixedly connected to the liquid washing tank 15 through an L-shaped fixing plate 16 to ensure the stability of the exhaust gas inlet pipe 17.

[0050] The filter cartridge 36 adopts a conical structure with a larger upper portion and a smaller lower portion. The upper end of the filter cartridge 36 is fixedly connected to the inner top outer ring of the storage tank 19, and the lower end of the filter cartridge 36 is fixedly connected to the middle of the inner bottom of the storage tank 19. The bottom of the storage tank 19 is also provided with a cleaning port 20 that is connected to the inner space of the filter cartridge 36; the top of the storage tank 19 is also provided with a liquid replenishing port 34.

[0051] The spray assembly includes a liquid supply pipe 13, a liquid distribution pipe 14, a liquid extraction pump 22, a branch pipe 31 and a nozzle 32. The liquid extraction pump 22 is fixed on the storage tank 19. The inlet of the liquid extraction pump 22 is connected to the bottom of the outer space of the filter cartridge 36. The outlet of the liquid extraction pump 22 is connected to the liquid supply pipe 13. The other end of the liquid supply pipe 13 is connected to the liquid distribution pipe 14 installed on the top of the liquid washing tank 15. A plurality of branch pipes 31 are evenly distributed and connected to the lower side of the liquid distribution pipe 14. The lower end of the branch pipe 31 extends to the top of the dirt isolation mesh plate 33. The lower end of the branch pipe 31 is also installed with a nozzle 32. The liquid can be lifted by the operation of the liquid extraction pump 22, and after being transported by the liquid supply pipe 13, distributed by the liquid distribution pipe 14, and conducted by the branch pipe 31, it is sprayed out through the nozzle 32 to act on the top of the dirt isolation mesh plate 33.

[0052] The two ends of the airflow pipe 4 are respectively connected to the middle position of the front side of the adsorption tank 3 and the liquid washing tank 15. The end of the airflow pipe 4 close to the adsorption tank 3 is symmetrically fixed with an inclined tube 40. A one-way valve 41 is also installed on the inner side of the airflow pipe 4. The one-way valve 41 is used to discharge the air inside the airflow pipe 4 into the inner cavity of the adsorption tank 3 through the inclined tube 40, and is cut off in the reverse direction. The inclined tube 40 can be adapted to the swing of the outer frame 37 by arranging it. The outer frame 37 squeezes the gas discharged from one inclined tube 40, and uses the one-way valve 41 to prevent reverse, so that the other inclined tube 40 accelerates the discharge of gas, thereby improving the effect of the action of the activated carbon 39 on the gas, and then improving the treatment effect and efficiency. The tail gas outlet pipe 24 is connected to the middle of the rear side of the adsorption tank 3, and the outer wall of the outer frame 37 is sealed and rotatably connected to the inner wall of the adsorption tank 3, which improves the reliability of the rotation of the outer frame 37.

[0053] like Figure 7 As shown, the inner cavity cross-section of the airflow tube 4 is circular, and a semi-disc-shaped liquid baffle plate 42 is fixed to the lower part of the inner cavity of the airflow tube 4. The liquid baffle plate 42 can block the liquid accompanying the spray, and allow the liquid to accumulate and flow back into the liquid washing tank 15, thereby avoiding the liquid from affecting the purification module 5 and the adsorption tank 3 and improving reliability.

[0054] like Figure 1-3As shown, the driving assembly includes a gear 6, a stabilizing frame 7, a top support shaft 8, a swing plate 9, a swing rod 10, a dual-output motor 12, an arc-shaped rack 21, a gear shaft 26, an adjustable telescopic rod 27, a toggle shaft 29 and a circular ring sleeve 30. Two stabilizing frames 7 are provided between the adsorption tank 3 and the liquid washing tank 15. The lower ends of the two stabilizing frames 7 are fixedly connected to the base 1. A top support shaft 8 is rotatably installed between the upper parts of the two stabilizing frames 7. The swing plate 9 and the swing rod 10 are respectively fixed on the top support shaft 8. The swing rod 10 is provided with a waist-shaped hole 25. One of the stabilizing frames 7 is fixedly connected to the end of the adsorption tank 3. A dual-output motor is fixed between the other stabilizing frame 7 and the liquid washing tank 15. 12, one side output shaft of the dual-output motor 12 is fixedly connected to the end of the diffusion tube 23, and the other side output shaft end of the dual-output motor 12 is fixed with an adjustable telescopic rod 27, and the adjustable telescopic rod 27 is fixed with a toggle shaft 29 on the side of one end away from the dual-output motor 12, and a circular ring sleeve 30 slidably connected to the waist-shaped hole 25 is rotatably mounted on the toggle shaft 29, and an arc-shaped arc rack 21 is fixed to the lower end of the swing plate 9, and a gear shaft 26 is rotatably mounted on one end of the adsorption tank 3 close to the liquid washing tank 15, and the gear shaft 26 is also fixedly connected to the outer frame 37, and the gear shaft 26 is also rotatably connected to the stabilizing frame 7, and a gear 6 meshing with the arc rack 21 is fixed on the gear shaft 26.

[0055] In order to improve the stability of the swing plate 9 and the swing rod 10, a reinforcing block 11 is further fixed between the swing plate 9 and the swing rod 10. The adjustable telescopic rod 27 is provided with a fastening bolt 28 for locking after adjustment. By changing the length of the adjustable telescopic rod 27, the swing amplitude of the swing rod 10 can be controlled, thereby controlling the swing amplitude of the outer frame 37.

[0056] When the driving assembly is in use, the dual output motor 12 can drive the spreading tube 23 to rotate continuously, and the dual output motor 12 can drive the adjustable telescopic rod 27 to rotate continuously. Due to the matching relationship between the annular sleeve 30 and the waist-shaped hole 25, the swing rod 10 can be driven to swing back and forth, so that the reciprocating swing of the swing plate 9 drives the gear 6 to rotate back and forth, thereby realizing the reciprocating swing of the outer frame 37. In addition, the length of the adjustable telescopic rod 27 can be adjusted, and the swing amplitude of the swing rod 10 can be controlled, thereby controlling the swing amplitude of the outer frame 37.

[0057] like Figure 7-10As shown, as a preferred embodiment of the present invention, the purification module 5 includes a filter tank 43, a plug plate 44, a handle 45, a purification core 46, a top sealing plate 48, a ball seat 49 and an elastic telescopic ball 50. The filter tank 43 is fixed on the airflow tube 4 between the liquid baffle plate 42 and the adsorption tank 3. A plurality of plug plates 44 are evenly arranged in the filter tank 43. A plug hole 47 for inserting the plug plate 44 is opened on the top of the filter tank 43. A top sealing plate 48 is also fixed on the upper part of the plug plate 44. A handle 45 is fixed on the top of the plug plate 44. A purification core 46 is installed on the plug plate 44. The plug plate 44 Positioning grooves 51 are provided on both sides of the lower part, and ball seats 49 are fixed on both sides of the plug plate 44 at the bottom of the filter tank 43. Elastic and retractable balls 50 that can cooperate with the positioning grooves 51 are elastically and retractably installed on the ball seats 49; when the elastic and retractable balls 50 are stuck in the positioning grooves 51, the purification core 46 is completely located in the inner cavity of the filter tank 43, and the top sealing plate 48 is sealed against the top of the plug hole 47, so that the purification core 46 can reliably filter the exhaust gas; applying a certain force to operate the handle 45 to pull out the plug plate 44, the purification core 46 can be maintained and replaced, which is convenient and reliable.

[0058] Preferably, the purification core 46 adopts a molecular sieve. The purification core 46 can be fixed on the plug plate 44 in a conventional arrangement without limitation. The arrangement of the outer frame 37, the mesh sealing plate 38 and the activated carbon 39 can be referred to. The molecular sieve is a porous material with a uniform microporous structure. It can selectively adsorb according to the size and shape of the molecules, thereby removing specific components in the exhaust gas. Specifically: when treating the exhaust gas of ethyl 4-chloroacetoacetate, the molecular sieve can adsorb harmful gases such as hydrogen chloride and dichloromethane therein to achieve the purpose of purifying the exhaust gas.

[0059] In the above embodiment of the present invention, a 4-chloroacetoacetic acid ethyl tail gas absorption treatment device is provided. Through the rotating distribution pipe 23 and the spray assembly, the tail gas and the liquid washing medium are effectively contacted, and the liquid washing impurity removal effect is improved, especially the dissolution and neutralization of harmful gases such as hydrogen chloride. The purification module 5 can adsorb harmful gases such as hydrogen chloride and dichloromethane in the tail gas to achieve the purpose of purifying the tail gas, and is designed to be detachable, which is convenient for regular cleaning or replacement of the purification core to ensure the long-term stable operation of the equipment. After being treated by the purification module 5, the tail gas enters the adsorption tank 3, and the residual organic impurities are further removed by the physical adsorption of activated carbon to ensure that the tail gas emissions meet environmental protection standards. The driving assembly causes the distribution pipe 23 to rotate continuously, and the outer frame 37 swings back and forth, which improves the contact efficiency between the tail gas and the liquid washing medium and the activated carbon, and enhances the treatment effect. In addition, the liquid filtered by the filter cartridge 36 can be reused, which reduces wastewater discharge and achieves resource conservation; the swing amplitude of the outer frame 37 can be controlled by adjusting the length of the adjustable telescopic rod 27 to adapt to different working conditions.

[0060] There is no specific limitation on the control, model and circuit connection of each component, and they can be flexibly set in actual application.

[0061] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A 4-chloroacetoacetic acid ethyl tail gas absorption treatment device, comprising a base (1) and a frame (2) fixed on the base (1), characterized in that: Also includes: An adsorption tank (3) and a liquid washing tank (15), wherein the adsorption tank (3) and the liquid washing tank (15) are both fixed on the frame (2), and the adsorption tank (3) and the liquid washing tank (15) are also connected via an air flow pipe (4), and a purification module (5) for filtering and purifying tail gas is also installed on the air flow pipe (4); A diffusion pipe (23) is rotatably mounted on the inner side of the liquid washing tank (15), a plurality of tail gas holes (35) are formed on the diffusion pipe (23), and an end of the diffusion pipe (23) away from the adsorption tank (3) is connected to an tail gas inlet pipe (17); an inverted U-shaped dirt-isolating mesh plate (33) is also provided on the inner side of the liquid washing tank (15), the diffusion pipe (23) is located on the inner side of the dirt-isolating mesh plate (33), and an end of the air flow pipe (4) away from the adsorption tank (3) is connected to the outer space of the dirt-isolating mesh plate (33); the lower side of the liquid washing tank (15) is connected to a storage tank (19) via a liquid return pipe (18), and a filter cartridge (36) is fixed in the storage tank (19); A spray assembly, the spray assembly being used to extract liquid from the bottom of the outer space of the filter cartridge (36) and transport it to the top of the dirt-isolating mesh plate (33); An outer frame (37) is rotatably mounted on the inner side of the adsorption tank (3), mesh sealing plates (38) are fixed to the front and rear openings of the outer frame (37), the inner side of the outer frame (37) is filled with activated carbon (39), and the end of the air flow pipe (4) away from the liquid washing tank (15) is connected to the front space of the outer frame (37); the rear side of the adsorption tank (3) is also connected to an exhaust gas outlet pipe (24), and the exhaust gas outlet pipe (24) is connected to the rear space of the outer frame (37); a driving assembly, the driving assembly being in driving connection with both the diffusion pipe (23) and the outer frame (37), and the driving assembly being used to drive the diffusion pipe (23) to rotate continuously and to drive the outer frame (37) to swing back and forth; The two ends of the air flow pipe (4) are respectively connected to the middle positions of the front sides of the adsorption tank (3) and the liquid washing tank (15); An inclined tube (40) is symmetrically fixed to one end of the airflow tube (4) close to the adsorption tank (3), and a one-way valve (41) is also installed on the inner side of the airflow tube (4). The one-way valve (41) is used to discharge the air inside the airflow tube (4) into the inner cavity of the adsorption tank (3) through the inclined tube (40) and to block the reverse direction. The exhaust gas outlet pipe (24) is connected to the middle of the rear side of the adsorption tank (3), and the outer wall of the outer frame (37) is connected to the inner wall of the adsorption tank (3) in a sealed and rotatable manner.

2. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to claim 1, characterized in that: The end of the diffusion pipe (23) away from the adsorption tank (3) is an open structure, and the end of the diffusion pipe (23) away from the adsorption tank (3) is also rotatably connected to the end of the liquid washing tank (15); The open end of the diffusion pipe (23) is rotatably connected to the exhaust gas inlet pipe (17), and the exhaust gas inlet pipe (17) is also fixedly connected to the liquid washing tank (15) via an L-shaped fixing plate (16).

3. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to claim 1, characterized in that: The filter cartridge (36) has a conical structure with a larger top and a smaller bottom. The upper end of the filter cartridge (36) is fixedly connected to the outer ring of the inner top of the storage tank (19), and the lower end of the filter cartridge (36) is fixedly connected to the middle of the inner bottom of the storage tank (19). The bottom of the storage tank (19) is also provided with a sewage cleaning port (20) which is in communication with the inner space of the filter cartridge (36); The top of the storage tank (19) is also provided with a liquid replenishing port (34).

4. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to any one of claims 1 to 3, characterized in that: The spray assembly comprises a liquid supply pipe (13), a liquid distribution pipe (14), a liquid extraction pump (22), a branch pipe (31) and a spray head (32); The liquid pump (22) is fixed on the storage tank (19), the inlet of the liquid pump (22) is connected to the bottom of the outer space of the filter cartridge (36), the outlet of the liquid pump (22) is connected to the liquid supply pipe (13), and the other end of the liquid supply pipe (13) is connected to the liquid distribution pipe (14) installed on the top of the liquid washing tank (15); The lower side of the liquid distribution pipe (14) is evenly distributed with a plurality of branch pipes (31), the lower ends of the branch pipes (31) extending to the top of the dirt isolation mesh plate (33), and the lower ends of the branch pipes (31) are also equipped with nozzles (32).

5. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to any one of claims 1 to 3, characterized in that: The driving assembly comprises a gear (6), a stabilizing frame (7), a top support shaft (8), a rocking plate (9), a rocking rod (10), a dual output motor (12), an arc-shaped rack (21), a gear shaft (26), an adjustable telescopic rod (27), a toggle shaft (29) and a circular ring sleeve (30); Two stabilizing frames (7) are provided between the adsorption tank (3) and the liquid washing tank (15), and the lower ends of the two stabilizing frames (7) are fixedly connected to the base (1); A top support shaft (8) is rotatably mounted between the upper parts of the two stabilizing frames (7), a swing plate (9) and a swing rod (10) are respectively fixed on the top support shaft (8), and a waist-shaped hole (25) is opened on the swing rod (10); One of the stabilizing frames (7) is fixedly connected to the end of the adsorption tank (3), a dual-output motor (12) is fixedly provided between the other stabilizing frame (7) and the liquid washing tank (15), one side output shaft of the dual-output motor (12) is fixedly connected to the end of the diffusion tube (23), an adjustable telescopic rod (27) is fixedly provided to the other side output shaft of the dual-output motor (12), a toggle shaft (29) is fixedly provided on the side surface of one end of the adjustable telescopic rod (27) away from the dual-output motor (12), and a circular ring sleeve (30) slidably connected to the waist-shaped hole (25) is rotatably mounted on the toggle shaft (29); An arc-shaped rack (21) is fixed at the lower end of the swing plate (9); a gear shaft (26) is rotatably mounted on one end of the adsorption tank (3) close to the liquid washing tank (15); the gear shaft (26) is also fixedly connected to the outer frame (37); the gear shaft (26) is also rotatably connected to the stabilizing frame (7); a gear (6) meshingly connected to the arc-shaped rack (21) is fixed on the gear shaft (26).

6. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to claim 1, characterized in that: A liquid baffle (42) is also fixed to the lower part of the inner cavity of the airflow tube (4).

7. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to claim 6, characterized in that: The inner cavity cross section of the airflow tube (4) is circular; The liquid baffle plate (42) is in the shape of a semi-circular disk that matches the inner cavity of the airflow tube (4).

8. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to claim 6, characterized in that: The purification module (5) comprises a filter tank (43), a plug plate (44), a handle (45), a purification core (46), a top sealing plate (48), a ball seat (49), and an elastic telescopic ball (50); The filter tank (43) is fixed on the air flow pipe (4) between the liquid baffle plate (42) and the adsorption tank (3), a plurality of plug plates (44) are evenly arranged in the filter tank (43), a plug hole (47) for inserting the plug plate (44) is opened on the top of the filter tank (43), a top sealing plate (48) is fixed on the top of the plug plate (44), and a handle (45) is fixed on the top of the plug plate (44); A purification core (46) is installed on the plug plate (44); Positioning grooves (51) are provided on both sides of the lower part of the plug plate (44), and ball seats (49) are fixed on both sides of the plug plate (44) at the bottom of the filter tank (43), and elastic and retractable balls (50) capable of cooperating with the positioning grooves (51) are elastically and retractably and rollingly mounted on the ball seats (49).

9. The ethyl 4-chloroacetoacetate tail gas absorption treatment device according to claim 8, characterized in that: The purification core (46) is made of molecular sieve; When the elastic telescopic ball (50) is positioned on the positioning groove (51), the purification core (46) is completely located in the inner cavity of the filter tank (43), and the top sealing plate (48) abuts against and seals the top of the insertion hole (47).

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