Tail gas deodorization device for trimethyl phosphate production and use method of tail gas deodorization device

Abstract

The invention relates to the technical field of tail gas treatment, and discloses a tail gas deodorization device for trimethyl phosphate production, the tail gas deodorization device comprises a reaction tower, the reaction tower is internally provided with a plurality of catalytic reaction assemblies, the upper side of each catalytic reaction assembly is provided with a spray pipe, each catalytic reaction assembly comprises a fixed seat, and the fixed seat is provided with a spray pipe; the fixed seat is fixedly connected with the reaction tower, and a first catalyst storage seat and a second catalyst storage seat which are through up and down are arranged in the fixed seat; and the first catalyst storage seat is positioned on the upper side of the second catalyst storage seat. According to the invention, the first catalyst storage seat is provided with the vent hole with a larger diameter, correspondingly, the second catalyst storage seat is provided with the plurality of vent pipes which have smaller diameters and are staggered with the vent hole, and the exhaust gas can more conveniently pass through the plurality of catalytic reaction components to reach the gas outlet due to the existence of the vent hole and the vent pipes.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas treatment technology, specifically to an exhaust gas deodorization device for the production of trimethyl phosphate and its usage method. Background Technology

[0002] Trimethyl phosphate is an organic compound primarily used as a solvent and extractant in pharmaceuticals and pesticides. It is also used as an additive flame retardant and plasticizer, but its flame retardant efficiency is low and it is highly volatile. It is generally used in combination with other flame retardants. The production processes of trimethyl phosphate mainly fall into two categories: phosphoric acid esterification and phosphate transesterification. Phosphoric acid esterification involves the direct reaction of phosphoric acid and methanol to produce trimethyl phosphate. This method is simple to operate and uses readily available raw materials, but the reaction rate is slow and requires a long reaction time. Furthermore, the reaction temperature and pressure must be controlled during the reaction to improve yield and purity. Phosphoric acid transesterification involves the transesterification of methanol with dimethyl phosphate or dibutyl phosphate to produce trimethyl phosphate. This method is currently the more commonly used industrial production method, offering advantages such as high efficiency, high yield, and the ability to use a variety of raw materials.

[0003] The processing of trimethyl phosphate generates waste gas. Because this waste gas contains a large amount of organic matter, it not only has an unpleasant odor but also negatively impacts the environment, requiring treatment before discharge. Common methods for treating organic waste gas include: chemical absorption, physical adsorption, microbial deodorization, catalytic oxidation, and thermal combustion. The catalytic oxidation process works by filling a reaction tower with a specially designed solid composite packing material containing a multi-media catalyst. When the odorous gas passes through the packing layer under the action of an induced draft fan, it comes into full contact with the liquid-phase composite oxidant sprayed in a diffused mist through special nozzles on the surface of the solid packing material. Under the catalytic action of the multi-media catalyst, the pollutants in the odorous gas are fully decomposed, thus achieving deodorization.

[0004] The common process of existing catalytic oxidation reaction towers is as follows: Waste gas is introduced into the reaction tower through a duct, passes through a packing layer, and then enters the tower tangentially from the inlet at the bottom. On the packing surface, the gas and liquid phases fully contact and absorb water-soluble waste gas, while simultaneously removing most of the particulate matter. The absorbent is pressurized by a pump at the bottom of the tower and sprayed down from the top, finally flowing back to a storage tank at the bottom of the spray tower for collection. Normally, multiple packing layers are installed inside the reaction tower. Although the waste gas can pass through these layers, their presence significantly affects the airflow velocity. To ensure normal waste gas flow, a high-power blower is required to maintain the air pressure, resulting in significant power consumption. Summary of the Invention

[0005] This invention provides a tail gas deodorization device and its usage method for trimethyl phosphate production, which has the advantages of low power consumption and high processing efficiency. It solves the problem mentioned in the background art that the presence of the packing layer will seriously affect the airflow velocity, and that a high-power blower mechanism is required to ensure the air pressure and power consumption in order to ensure the normal flow of exhaust gas.

[0006] The present invention provides the following technical solution: a tail gas deodorization device for the production of trimethyl phosphate, comprising a reaction tower, wherein the interior of the reaction tower is provided with a plurality of catalytic reaction components, and each of the catalytic reaction components is provided with a spray pipe on its upper side. The catalytic reaction component includes a fixed base, the fixed base is fixedly connected to the reaction tower, and the fixed base is provided with a first catalyst storage base and a second catalyst storage base that are permeable from top to bottom.

[0007] The first catalyst storage seat is located above the second catalyst storage seat, and both the first catalyst storage seat and the second catalyst storage seat are elastically connected to the fixed seat through a first return spring. The first catalyst storage seat is provided with a vent hole in the middle, and the second catalyst storage seat is provided with several vent pipes. The fixed seat is provided with an adjustment mechanism in the middle for adjusting the first catalyst storage seat and the second catalyst storage seat.

[0008] As an optional embodiment of the tail gas deodorization device for the production of trimethyl phosphate according to the present invention, the adjusting mechanism includes a drive motor and a transmission shaft. The transmission shaft is rotatably connected to the reaction tower through a bearing, and a cam is provided on the transmission shaft. The drive motor is fixedly connected to the reaction tower, and the output shaft of the drive motor is fixedly connected to the transmission shaft.

[0009] As an optional embodiment of the tail gas deodorization device for trimethyl phosphate production according to the present invention, wherein: a liquid recovery device is provided at one end of the fixed base near the second catalyst storage base, and the liquid recovery device includes a manifold, a liquid storage base is provided in the middle of the manifold, a piston is provided inside the liquid storage base, a pressure plate is provided on the outside of the liquid storage base, and the pressure plate is fixedly connected to the piston through a connecting rod. The pressure plate is elastically connected to the liquid storage base through a second return spring. A liquid guide pipe is provided at one end of the liquid storage base, a manifold groove is provided at the top of the manifold, and a through hole for communicating with the liquid storage base is provided at the bottom of the manifold groove.

[0010] As an optional embodiment of the tail gas deodorization device for the production of trimethyl phosphate according to the present invention, wherein: the fixing seat is cylindrical, and the inner wall of the fixing seat is provided with a plurality of grooves, the positions of the grooves being opposite to the manifold.

[0011] As an optional embodiment of the tail gas deodorization device for the production of trimethyl phosphate according to the present invention, the drive shaft is a hollow structure, and one end of the drive shaft is provided with a rotary pipe joint, one end of the rotary pipe joint is connected to the drive shaft, and the other end of the rotary pipe joint is connected to the liquid guide pipe, and the drive shaft is provided with a plurality of nozzles.

[0012] As an optional embodiment of the tail gas deodorization device for the production of trimethyl phosphate according to the present invention, wherein: a flow limiting device is provided in the vent hole, and the flow limiting device includes a base, the base is annular, one end of the base is fixedly connected to the second catalyst storage seat, and the other end of the base is provided with a plurality of baffles.

[0013] As an optional embodiment of the tail gas deodorization device for the production of trimethyl phosphate described in this invention, the bottom of the reaction tower is provided with a waste liquid collection tank, and one side of the reaction tower is provided with an air inlet, and the upper end of the reaction tower is provided with an air outlet.

[0014] As an optional embodiment of the tail gas deodorization device for the production of trimethyl phosphate described in this invention, wherein: both ends of the vent pipe are provided with openings, and a plurality of vent holes are arranged around the pipe body, the vent holes being inclinedly opened on the vent pipe.

[0015] As an optional embodiment of the tail gas deodorization device for trimethyl phosphate production described in this invention, the following features are provided: a vent pipe cleaning mechanism is provided on the lower side of the second catalyst storage seat, and the vent pipe cleaning mechanism includes a fixing frame. The fixing frame is elastically connected to the second catalyst storage seat through a rebound spring, and the fixing frame has limiting grooves corresponding to the vent pipes. An extension block is provided on one side of the fixing frame, and the extension block is elastically connected to the fixing frame through a third return spring. A limiting plate is provided on the inner wall of the fixing seat, and the position of the limiting plate is opposite to the extension block. The limiting plate has several protrusions.

[0016] The present invention also discloses a method of using a tail gas deodorization device for the production of trimethyl phosphate, comprising the following steps:

[0017] S1. The exhaust gas is sent into the reaction tower by the fan. The spray pipe works to spray the atomized liquid oxidant into the reaction tower. The exhaust gas comes into contact with and reacts with the atomized liquid as it flows upward.

[0018] S2. Some of the atomized liquid falls onto the catalytic reaction assembly and flows down along it. As the exhaust gas passes through the catalytic reaction assembly, it undergoes a catalytic reaction with the catalyst packing inside the assembly, and also reacts with the liquid oxidant remaining on the assembly.

[0019] S3. The exhaust gas after the reaction is complete is discharged through the outlet. After passing through the catalytic reaction component, the liquid oxidant flows into the waste liquid collection tank, where the liquid oxidant is centrally recovered.

[0020] The present invention has the following beneficial effects:

[0021] 1. A tail gas deodorization device for trimethyl phosphate production and its usage method, comprising a large-diameter vent hole on a first catalyst storage seat and correspondingly, several smaller-diameter vent pipes offset from the vent hole on a second catalyst storage seat. The presence of the vent hole and vent pipes allows the exhaust gas to pass more easily through multiple catalytic reaction components to reach the outlet. Specifically, both the first and second catalyst storage seats are movable. A flow-limiting device is provided on the second catalyst storage seat, which includes a base with cross-arranged baffles of different lengths. Under normal circumstances, the flow-limiting device is inserted into the vent hole, preventing the exhaust gas from directly passing through the vent hole and delaying the residence time of the exhaust gas. When the drive shaft rotates, the gap between the first and second catalyst storage seats increases under the push of the cam. As the first and second catalyst storage seats move, the flow-limiting device is pulled out from the vent hole. After the obstruction of the flow-limiting device is removed, the exhaust gas can pass through the vent hole more easily.

[0022] The first and second catalyst storage seats reciprocate under the drive of the cam. As the first and second catalyst storage seats move, the flow rate at the vent changes periodically. The first and second catalyst storage seats are also equipped with drive shafts with nozzles. When the drive shafts rotate, they can spray the liquid between the first and second catalyst storage seats to improve the treatment effect of the exhaust gas. Under the premise of meeting the exhaust gas treatment effect, the difficulty of exhaust gas passage is effectively reduced and the power consumption is reduced.

[0023] 2. The deodorization device for tail gas in the production of trimethyl phosphate and its usage method, wherein a manifold is set on the lower side of the second catalyst storage seat, the liquid sprayed on the fixed seat will flow along the flow channel of the fixed seat to the manifold, and then enter the liquid storage seat through the manifold groove and through hole. A piston is also set in the liquid storage seat. When the second catalyst storage seat moves under the push of the cam, one end of the second catalyst storage seat will abut against the pressure plate, and then push the piston to move through the pressure plate and connecting rod. A one-way valve is set at the through hole. With the movement of the piston, the liquid in the liquid storage seat will enter the drive shaft through the liquid guide pipe and the rotary pipe joint, and then be sprayed at the gap between the first catalyst storage seat and the second catalyst storage seat through the nozzle on the drive shaft.

[0024] This device features an openable and closable catalytic reaction assembly, coupled with a drive shaft equipped with nozzles. A liquid recovery device can collect the liquid. By linking the second catalyst storage seat with the liquid recovery device, the liquid recovered by the liquid recovery device enters the drive shaft and is sprayed out. The drive shaft needs to rotate to open and close the catalytic reaction assembly. During its rotation, the liquid can be sprayed relatively evenly inside the catalytic reaction assembly, effectively improving the waste gas treatment effect and the utilization rate of the liquid.

[0025] 3. A tail gas deodorization device for trimethyl phosphate production and its usage method are disclosed. A movable fixing frame is provided on the lower side of the second catalyst storage seat. The fixing frame is provided with a limiting groove. One end of the vent pipe passes through the limiting groove. The diameter of the limiting groove is larger than that of the vent pipe. An extension block is provided on the fixing frame. During the movement of the fixing frame with the second catalyst storage seat, the extension block abuts against the protrusion. Under the push of the protrusion, the fixing frame slides relative to the second catalyst storage seat. During this process, the fixing frame continuously impacts the vent pipe, which can shake off the droplets at the vent hole, effectively ensuring the performance of the vent pipe. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the catalytic reaction component structure of the present invention.

[0028] Figure 3 This is a schematic diagram of the internal structure of the fixing base of the present invention.

[0029] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0030] Figure 5 This is a schematic diagram of the internal structure of the medicine storage base of the present invention.

[0031] Figure 6 This is a cross-sectional view of the second catalyst storage seat of the present invention.

[0032] Figure 7 This is a schematic diagram of the drug liquid recovery device of the present invention.

[0033] Figure 8 This is a schematic diagram of the connection structure between the second catalyst storage seat and the flow limiting device of the present invention.

[0034] In the diagram: 1. Reaction tower; 2. Spray pipe; 3. Fixing base; 301. Groove; 4. First catalyst storage base; 401. Vent hole; 5. Second catalyst storage base; 6. First reset spring; 7. Vent pipe; 701. Vent hole; 702. Opening; 8. Drive motor; 9. Transmission shaft; 901. Cam; 902. Nozzle; 10. Manifold; 1001. Manifold groove; 1002. Through hole; 11. Liquid storage base; 12. Piston; 13. Pressure plate; 14. Connecting rod; 15. Liquid guide pipe; 16. Rotary pipe joint; 17. Base; 18. Baffle plate; 19. Waste liquid collection tank; 20. Air inlet; 21. Air outlet; 22. Fixing frame; 23. Rebound spring; 24. Extension block; 25. Third reset spring; 26. Limiting plate; 27. Protrusion; 28. Second reset spring; 29. ​​Limiting groove. Detailed Implementation

[0035] 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.

[0036] Example 1

[0037] Please see Figures 1 to 8 The present invention discloses a tail gas deodorization device for the production of trimethyl phosphate, including a reaction tower 1. The reaction tower 1 is provided with a plurality of catalytic reaction components inside, and each catalytic reaction component is provided with a spray pipe 2 on its upper side. The catalytic reaction component includes a fixed seat 3, which is fixedly connected to the reaction tower 1, and the fixed seat 3 is provided with a first catalyst storage seat 4 and a second catalyst storage seat 5 that are open at the top and bottom.

[0038] The first catalyst storage seat 4 is located above the second catalyst storage seat 5, and both the first catalyst storage seat 4 and the second catalyst storage seat 5 are elastically connected to the fixed seat 3 through the first reset spring 6. The first catalyst storage seat 4 is provided with a vent hole 401 in the middle, and the second catalyst storage seat 5 is provided with several vent pipes 7. The fixed seat 3 is provided with an adjustment mechanism in the middle for adjusting the first catalyst storage seat 4 and the second catalyst storage seat 5.

[0039] The adjustment mechanism includes a drive motor 8 and a transmission shaft 9. The transmission shaft 9 is rotatably connected to the reaction tower 1 through a bearing, and a cam 901 is provided on the transmission shaft 9. The drive motor 8 is fixedly connected to the reaction tower 1, and the output shaft of the drive motor 8 is fixedly connected to the transmission shaft 9.

[0040] The vent 401 is equipped with a flow limiting device, which includes a base 17. The base 17 is annular, and one end of the base 17 is fixedly connected to the second catalyst storage seat 5. The other end of the base 17 is provided with several baffles 18.

[0041] To reduce wind resistance, this application provides a large-diameter vent 401 on the first catalyst storage seat 4. Correspondingly, several smaller-diameter vent pipes 7 are provided on the second catalyst storage seat 5, staggered from the vent. Both the first catalyst storage seat 4 and the second catalyst storage seat 5 are vertically and vertically permeable, allowing airflow to pass directly through them, although at a low velocity. The presence of the vent 401 and vent pipes 7 facilitates the passage of exhaust gas through multiple catalytic reaction components to reach the outlet 21. In this device, both the first catalyst storage seat 4 and the second catalyst storage seat 5 are movable. The seat 5 is equipped with a flow limiting device, which includes a base 17. The base 17 is equipped with cross-arranged baffles 18 of different lengths. Under normal circumstances, the flow limiting device is inserted into the vent 401. The presence of the flow limiting device prevents the exhaust gas from passing directly through the vent 401, thus delaying the residence time of the exhaust gas and allowing the reaction to be more complete. When the drive shaft 9 rotates, the gap between the first catalyst storage seat 4 and the second catalyst storage seat 5 increases under the push of the cam 901. As the first catalyst storage seat 4 and the second catalyst storage seat 5 move, the flow limiting device is pulled out from the vent 401. After the obstruction of the flow limiting device is removed, the exhaust gas can pass through the vent more easily.

[0042] The first catalyst storage seat 4 and the second catalyst storage seat 5 reciprocate under the drive of the cam 901. As the first catalyst storage seat 4 and the second catalyst storage seat 5 move, the flow rate at the vent 401 changes periodically. The first catalyst storage seat 4 and the second catalyst storage seat 5 are also provided with a drive shaft 9 with a nozzle 902. When the drive shaft 9 rotates, it can spray the liquid between the first catalyst storage seat 4 and the second catalyst storage seat 5 to improve the treatment effect of the exhaust gas. Under the premise of meeting the exhaust gas treatment effect, it effectively reduces the difficulty of exhaust gas passage and reduces power consumption.

[0043] Example 2

[0044] This embodiment is an explanation based on Embodiment 1. For details, please refer to [link / reference]. Figures 1 to 8The fixed base 3 is provided with a liquid recovery device at one end near the second catalyst storage base 5. The liquid recovery device includes a manifold 10, a liquid storage base 11 in the middle of the manifold 10, a piston 12 inside the liquid storage base 11, a pressure plate 13 on the outside of the liquid storage base 11, and the pressure plate 13 is fixedly connected to the piston 12 through a connecting rod 14. The pressure plate 13 is elastically connected to the liquid storage base 11 through a second return spring 28. A liquid guide tube 15 is provided at one end of the liquid storage base 11. A manifold groove 1001 is provided at the top of the manifold 10, and a through hole 1002 for communicating with the liquid storage base 11 is provided at the bottom of the manifold groove 1001.

[0045] The fixing base 3 is cylindrical, and the inner wall of the fixing base 3 is provided with several grooves 301, the position of the grooves 301 being opposite to the manifold 1001.

[0046] The drive shaft 9 is a hollow structure, and one end of the drive shaft 9 is provided with a rotary pipe joint 16. One end of the rotary pipe joint 16 is connected to the drive shaft 9, and the other end of the rotary pipe joint 16 is connected to the liquid guide pipe 15. Several nozzles 902 are provided on the drive shaft 9.

[0047] The bottom of the reaction tower 1 is provided with a waste liquid collection tank 19, and one side of the reaction tower 1 is provided with an air inlet 20, and the upper end of the reaction tower 1 is provided with an air outlet 21.

[0048] To improve the utilization rate of the drug solution, a manifold 10 is provided on the lower side of the second catalyst storage seat 5. Correspondingly, several grooves 301 are formed on the inner wall of the fixed seat 3. The drug solution sprayed on the fixed seat 3 will flow along the fixed seat 3 to the manifold 10, and then enter the drug solution storage seat 11 through the manifold 1001 and the through hole 1002. A piston 12 is also provided in the drug solution storage seat 11. When the second catalyst storage seat 5 moves under the push of the cam 901, the second catalyst storage seat... One end of 5 will abut against the pressure plate 13, and then push the piston 12 to move through the pressure plate 13 and the connecting rod 14. A one-way valve is provided at the through hole 1002. As the piston 12 moves, the liquid in the liquid storage seat 11 will enter the drive shaft 9 through the liquid guide pipe 15 and the rotary pipe joint 16, and then be sprayed at the gap between the first catalyst storage seat 4 and the second catalyst storage seat 5 through the nozzle 902 on the drive shaft 9, thereby treating the exhaust gas at the gap between the first catalyst storage seat 4 and the second catalyst storage seat 5.

[0049] This device features an openable and closable catalytic reaction assembly, coupled with a drive shaft equipped with nozzles 902. A liquid recovery device can collect the liquid. The linkage between the second catalyst storage seat 5 and the liquid recovery device causes the recovered liquid to enter the drive shaft 9 and be sprayed out. The drive shaft 9 rotates to open and close the catalytic reaction assembly, allowing the liquid to be sprayed relatively evenly within the assembly, effectively improving waste gas treatment efficiency and liquid utilization.

[0050] Example 3

[0051] This embodiment is an explanation based on Embodiment 1. For details, please refer to [link / reference]. Figures 1 to 8 Both ends of the vent pipe 7 are provided with openings 702, and several vent holes 701 are arranged around the pipe body of the vent pipe 7. The vent holes 701 are opened at an angle on the vent pipe 7.

[0052] The lower side of the second catalyst storage seat 5 is provided with a vent pipe cleaning mechanism, which includes a fixing frame 22. The fixing frame 22 is elastically connected to the second catalyst storage seat 5 through a spring 23. The fixing frame 22 is provided with a limiting groove 29 corresponding to the vent pipe 7. An extension block 24 is provided on one side of the fixing frame 22. The extension block 24 is elastically connected to the fixing frame 22 through a third reset spring 25. The end of the extension block 24 away from the fixing frame 22 is provided with a slope. A limiting plate 26 is provided on the inner wall of the fixing seat 3. The position of the limiting plate 26 is opposite to the extension block 24. The limiting plate 26 is provided with several protrusions 27.

[0053] To reduce the difficulty of exhaust gas passing through the catalytic reaction assembly, this device is equipped with several vent pipes 7 on the second catalyst storage seat 5. These vent pipes 7 not only reduce the difficulty of exhaust gas passage but also have several vent holes 701. When the exhaust gas passes through the vent pipes 7, it can react with the catalyst inside the second catalyst storage seat 5 through the vent holes 701. Since the sprayed liquid flows down along the catalytic reaction assembly, some of the liquid enters the vent pipes 7. Under the influence of surface tension, the liquid easily clogs the vent holes 701. To solve this problem, this device... A movable fixing frame 22 is provided on the lower side of the storage seat 5. The fixing frame 22 is provided with a limiting groove 29. One end of the vent pipe 7 passes through the limiting groove 29. The diameter of the limiting groove 29 is larger than that of the vent pipe 7. An extension block 24 is provided on the fixing frame 22. During the movement of the fixing frame 22 with the second catalyst storage seat 5, the extension block 24 abuts against the protrusion 27. Under the push of the protrusion 27, the fixing frame 22 slides relative to the second catalyst storage seat 5. During this process, the fixing frame 22 continuously hits the vent pipe 7, which can shake off the droplets at the vent hole 701, effectively ensuring the use effect of the vent pipe 7.

[0054] The present invention also discloses a method of using a tail gas deodorization device for the production of trimethyl phosphate, comprising the following steps:

[0055] S1. The exhaust gas is sent into the reaction tower 1 by the fan. The spray pipe 2 is working to spray the atomized liquid oxidant into the reaction tower 1. The exhaust gas comes into contact with the atomized liquid and reacts as it flows upward.

[0056] S2. Some of the atomized liquid falls onto the catalytic reaction component and flows down along the catalytic reaction component. As the exhaust gas passes through the catalytic reaction component, it reacts with the catalyst packing inside the catalytic reaction component to launch a catalytic reaction, and it also reacts with the liquid oxidant remaining on the catalytic reaction component.

[0057] S3. The exhaust gas after the reaction is complete is discharged through the outlet 21. After passing through the catalytic reaction component, the liquid oxidant flows into the waste liquid collection tank 19, and the liquid oxidant is centrally recovered through the waste liquid collection tank 19.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tail gas deodorization device for trimethyl phosphate production, comprising a reaction tower (1), characterized in that: The reaction tower (1) is equipped with several catalytic reaction components inside, and each catalytic reaction component is equipped with a spray pipe (2) on its upper side. The catalytic reaction component includes a fixed seat (3), which is fixedly connected to the reaction tower (1). The fixed seat (3) is equipped with a first catalyst storage seat (4) and a second catalyst storage seat (5) that are open from top to bottom. The first catalyst storage seat (4) is located above the second catalyst storage seat (5), and both the first catalyst storage seat (4) and the second catalyst storage seat (5) are elastically connected to the fixed seat (3) through the first return spring (6). The first catalyst storage seat (4) has a vent hole (401) in the middle, and the second catalyst storage seat (5) has several vent pipes (7). The fixed seat (3) has an adjustment mechanism in the middle for adjusting the first catalyst storage seat (4) and the second catalyst storage seat (5).

2. The tail gas deodorization device for trimethyl phosphate production according to claim 1, characterized in that: The adjustment mechanism includes a drive motor (8) and a transmission shaft (9). The transmission shaft (9) is rotatably connected to the reaction tower (1) through a bearing, and a cam (901) is provided on the transmission shaft (9). The drive motor (8) is fixedly connected to the reaction tower (1), and the output shaft of the drive motor (8) is fixedly connected to the transmission shaft (9).

3. The tail gas deodorization device for trimethyl phosphate production according to claim 2, characterized in that: The fixed base (3) is provided with a liquid recovery device at one end near the second catalyst storage base (5), and the liquid recovery device includes a manifold (10), a liquid storage base (11) is provided in the middle of the manifold (10), and a piston (12) is provided in the liquid storage base (11). A pressure plate (13) is provided on the outside of the liquid storage base (11), and the pressure plate (13) is fixedly connected to the piston (12) through a connecting rod (14). The pressure plate (13) is elastically connected to the liquid storage base (11) through a second return spring (28). A liquid guide pipe (15) is provided at one end of the liquid storage base (11). A manifold groove (1001) is provided at the top of the manifold (10), and a through hole (1002) for communicating with the liquid storage base (11) is provided at the bottom of the manifold groove (1001).

4. The tail gas deodorization device for trimethyl phosphate production according to claim 3, characterized in that: The fixing seat (3) is cylindrical, and the inner wall of the fixing seat (3) is provided with a plurality of grooves (301), the position of the grooves (301) being opposite to the manifold (1001).

5. The tail gas deodorization device for trimethyl phosphate production according to claim 4, characterized in that: The drive shaft (9) is a hollow structure, and one end of the drive shaft (9) is provided with a rotary pipe joint (16). One end of the rotary pipe joint (16) is connected to the drive shaft (9), and the other end of the rotary pipe joint (16) is connected to the liquid guide pipe (15). The drive shaft (9) is provided with a plurality of nozzles (902).

6. The tail gas deodorization device for trimethyl phosphate production according to claim 5, characterized in that: The vent (401) is provided with a flow limiting device, and the flow limiting device includes a base (17). The base (17) is annular, and one end of the base (17) is fixedly connected to the second catalyst storage seat (5). The other end of the base (17) is provided with several baffles (18).

7. The tail gas deodorization device for trimethyl phosphate production according to claim 6, characterized in that: The bottom of the reaction tower (1) is provided with a waste liquid collection tank (19), and an air inlet (20) is provided on one side of the reaction tower (1), and an air outlet (21) is provided at the top of the reaction tower (1).

8. The tail gas deodorization device for trimethyl phosphate production according to claim 7, characterized in that: Both ends of the ventilation pipe (7) are provided with openings (702), and a number of ventilation holes (701) are arranged around the pipe body of the ventilation pipe (7). The ventilation holes (701) are opened obliquely on the ventilation pipe (7).

9. A tail gas deodorization device for trimethyl phosphate production according to claim 8, characterized in that: The second catalyst storage seat (5) is provided with a vent pipe cleaning mechanism on its lower side, and the vent pipe cleaning mechanism includes a fixing frame (22). The fixing frame (22) is elastically connected to the second catalyst storage seat (5) through a spring (23). The fixing frame (22) is provided with a limiting groove (29) corresponding to the vent pipe (7). An extension block (24) is provided on one side of the fixing frame (22). The extension block (24) is elastically connected to the fixing frame (22) through a third reset spring (25). A limiting plate (26) is provided on the inner wall of the fixing seat (3). The position of the limiting plate (26) is opposite to the extension block (24). The limiting plate (26) is provided with several protrusions (27).

10. The method of using the tail gas deodorization device for trimethyl phosphate production according to claim 9, characterized in that: Includes the following steps: S1. The exhaust gas is sent into the reaction tower (1) by the fan. The spray pipe (2) works to spray the atomized liquid oxidant into the reaction tower (1). The exhaust gas comes into contact with the atomized liquid and reacts during the upward flow. S2. Some of the atomized liquid falls onto the catalytic reaction component and flows down along the catalytic reaction component. As the exhaust gas passes through the catalytic reaction component, it reacts with the catalyst packing inside the catalytic reaction component to launch a catalytic reaction, and it also reacts with the liquid oxidant remaining on the catalytic reaction component. S3. The exhaust gas after the full reaction is discharged through the outlet (21). After passing through the catalytic reaction component, the liquid oxidant flows into the waste liquid collection tank (19) and is centrally recovered through the waste liquid collection tank (19).

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