Tail gas buffer tank for pesticide production

Abstract

The utility model provides a kind of tail gas buffer tank for pesticide production, it is related to tail gas treatment technical field, including tank body, apron, gas outlet, gas inlet, gas inlet dispersing piece, guide chute, multilayer annular solid particle filter removal assembly, circular baffle, wire mesh demister, multilayer annular filter piece, solid particle suction assembly, suction through-hole, flushing, blowdown structure;Gas inlet is dispersed by gas inlet dispersing piece and reduces flow speed, enters multistage filtration by guide chute into multilayer annular solid particle filter removal assembly, filters out solid particle in tail gas, avoids its accumulation in tank body inner cavity or enters subsequent pipeline;Subsequently, the gas filtered out solid particle passes through circular baffle and changes airflow direction, so that gas-liquid is preliminarily separated in collision, further flow speed buffering is carried out to gas inlet, smooth airflow reduces liquid knock risk, and subsequent equipment is protected;Finally, wire mesh demister filters out small droplet preliminarily separated in gas, avoids its entry into subsequent pipeline.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to an exhaust gas buffer tank for pesticide production. Background Technology

[0002] The descriptions in this section provide background information relevant to this disclosure only and do not constitute prior art.

[0003] The pesticide production process generates exhaust gas, which may contain unreacted raw materials, catalyst powder, or polymer particles. These particles settle and accumulate in the tank, easily causing blockages in the inlet and outlet pipelines. During the production process, the exhaust gas flow is unstable and may carry liquid, forming a "liquid hammer" phenomenon that impacts the tank and subsequent equipment. Frequent pressure fluctuations also affect the stable operation of subsequent processing equipment. Traditional buffer tanks rely solely on gravity settling, which has low efficiency in separating tiny droplets and particles. These substances are carried into subsequent pipelines and may damage equipment such as compressors and vacuum pumps. Summary of the Invention

[0004] The purpose of this invention is to provide a tail gas buffer tank for pesticide production, which prevents solid particles from accumulating in the inner cavity of the tank or entering subsequent pipelines, stabilizes the airflow, reduces the risk of liquid hammer, filters out small droplets in the gas, and prevents them from entering subsequent pipelines, thus solving the above-mentioned technical problems.

[0005] This utility model provides a tail gas buffer tank for pesticide production, comprising: The tank body has a cover plate fixed to its upper end by bolts; The lower end of the outer wall of the tank is fixedly connected to an air outlet, and the middle of the top surface of the cover plate is fixedly connected to an air inlet. The inner cavity of the tank is fixedly equipped from top to bottom with an air inlet dispersion component, a flow guide bucket, a multi-layer annular solid particle filter assembly, a circular baffle plate, and a wire mesh demister. The multi-layer annular solid particle filtration assembly includes: A multi-layer annular filter element is fixedly assembled at the upper end of the inner cavity of the tank. A solid particle removal component is embedded in the upper part of the outer wall of the tank, and its input end extends laterally through the multi-layer annular filter element. The solid particle removal component has uniformly opened suction holes at its input end; The lower end of the flow guide extends to the middle of the inner cavity of the multi-layer annular filter element; The wire mesh demister is located above the air outlet; The lower end of the tank is equipped with a flushing and sewage discharge structure.

[0006] As a further optimization, in order to filter out solid particles in the intake air, the multi-layer annular filter element includes: A disc, the top surface of which is coaxially fixedly fitted with an outer ring mesh, a middle ring mesh and an inner ring mesh from the outside to the inside; The outer ring mesh outer wall is fixedly equipped with support rods at the front, back, left, and right, with its outer ends fixedly connected to the upper end of the inner cavity of the tank.

[0007] As a further optimization, in order to extract solid particles filtered out from within the multi-layer annular filter element, the solid particle removal assembly includes: The outer shell is embedded and fitted onto the upper end of the outer wall of the tank. An axial flow fan is fixedly connected to the right side of the outer casing, and the airflow is directed outward from the outer casing. The front wall of the outer shell has a first strip window, into which a filter plate is inserted; The outer wall of the filter plate is attached to the inner wall of the outer shell; The outer shell is fixedly connected to a horizontal tube on the side near the tank body, and its end is sealed. The horizontal tube extends laterally through the multi-layer annular filter element; The suction holes are evenly distributed along the length of the upper end of the horizontal tube; A second strip-shaped window is provided on the bottom surface of the outer shell near the left side of the filter plate, and a solid particle collection box is inserted therein.

[0008] As a further optimization, in order to give the tank body corrosion resistance, the tank body includes: The stainless steel tank has its inner wall lined entirely with plastic.

[0009] As a further optimization, the flushing interface is used to connect a high-pressure water gun to flush the inside of the tank, and to open the valve of the discharge pipe with valve to discharge the dirt that has accumulated at the lower end of the tank's inner cavity. The flushing and sewage discharge structure includes: A discharge pipe with a valve, the upper end of which is fixedly connected to the middle of the bottom surface of the tank; The lower edge of the outer wall of the tank is fixedly connected to a flushing port, with its outer end tilted downwards.

[0010] As a further optimization, in order to monitor the pressure inside the tank in real time and automatically release pressure when the pressure rises abnormally to ensure equipment safety, a pressure gauge and a safety valve are fixedly connected to the edge of the top surface of the cover plate.

[0011] As a further optimization, in order to facilitate the detection of the liquid level separated from the tank and to discharge the liquid in a timely manner, a liquid level gauge is fixedly installed at the edge of the top surface of the cover plate, and its lower end extends to the lower end of the inner cavity of the tank.

[0012] As a further optimization, in order to install a toxic or flammable gas detection probe to facilitate the component detection of pesticide production exhaust gas, a gas detection interface is fixedly connected to the upper end of the outer wall of the tank.

[0013] As a further optimization, in order to facilitate the inspection of the tank's interior through the manhole, a manhole is fixedly connected to the lower end of the tank's outer wall.

[0014] As a further optimization, to provide stable support for the device and facilitate sewage discharge, a support frame is fixedly installed at the lower end of the tank, which includes: The base plate has supports evenly and circumferentially fixed to its upper edge; The bottom surface of the tank is fixedly connected to the upper end of the support column.

[0015] This utility model provides an improved tail gas buffer tank for pesticide production, which has the following improvements and advantages compared with the prior art: The intake air is dispersed and its flow velocity is reduced by the intake air dispersion component. Finally, it enters the multi-layer annular solid particle filter assembly through the guide bucket for multi-stage filtration, filtering out solid particles in the exhaust gas and preventing them from accumulating in the inner cavity of the tank or entering subsequent pipelines. Subsequently, the gas with the solid particles filtered out passes through a circular baffle to change the airflow direction, causing the gas and liquid to initially separate during collision. This further buffers the flow velocity of the intake air, stabilizes the airflow, reduces the risk of liquid hammer, and protects downstream equipment. Finally, the small droplets that have been initially separated in the gas are filtered out by the wire mesh demister, preventing them from entering subsequent pipelines. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the internal structure of the tank of this utility model; Figure 3 This is a schematic top view of the multi-layer annular filter structure of this utility model; Figure 4 This is a schematic diagram of the solid particle removal component of this utility model; Figure 5 This is a schematic cross-sectional view of the tank structure of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1- Circular baffle, 2- Cover plate, 21- Air inlet, 3- Multi-layer annular solid particle filter assembly, 31- Multi-layer annular filter element, 311- Outer annular mesh, 312- Middle annular mesh, 313- Inner annular mesh, 314- Support rod, 315- Disc, 32- Solid particle suction assembly, 321- Outer shell, 322- Axial flow fan, 323- Filter plate, 324- First strip window, 325- Second strip window, 326- Solid particle... Particle collection box, 327-horizontal pipe, 328-suction through hole, 4-support frame, 41-bottom plate, 42-support column, 5-tank body, 51-stainless steel tank, 52-plastic lining, 53-air outlet, 6-wire mesh demister, 7-air inlet dispersion component, 8-guide bucket, 9-flushing and sewage discharge structure, 91-discharge pipe with valve, 92-flushing interface, 10-manhole, 11-gas detection interface, 12-safety valve, 13-pressure gauge, 14-level gauge. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a tail gas buffer tank for pesticide production, comprising: Tank body 5, with a cover plate 2 fixedly mounted on its upper end by bolts; An air outlet 53 is fixedly connected to the lower end of the outer wall of the tank body 5, and an air inlet 21 is fixedly connected to the middle of the top surface of the cover plate 2. The inner cavity of the tank body 5 is fixedly equipped from top to bottom with an air inlet dispersion component 7, a flow guide hopper 8, a multi-layer annular solid particle filter assembly 3, a circular baffle plate 1, and a wire mesh demister 6; The multi-layer annular solid particle filtration assembly 3 includes: A multi-layer annular filter element 31 is fixedly assembled at the upper end of the inner cavity of the tank body 5; A solid particle removal assembly 32 is embedded in the upper part of the outer wall of the tank 5, and its input end is transversely connected through a multi-layer annular filter element 31. The input end of the solid particle suction component 32 is uniformly provided with suction through holes 328; The lower end of the guide bucket 8 extends to the middle of the inner cavity of the multi-layer annular filter element 31; The wire mesh demister 6 is located above the air outlet 53; The lower end of the tank body 5 is equipped with a flushing and sewage discharge structure 9.

[0023] Specifically in this embodiment, the tank body 5 has corrosion-resistant properties, the cover plate 2 is fixed to the upper opening of the tank body 5 by bolts, and a sealing ring is provided between the cover plate 2 and the upper end of the tank body 5 for sealing. The upper end of the air inlet 21 is connected to the exhaust gas output end of the pesticide production equipment; Furthermore, the intake air is dispersed and its flow velocity is reduced by the intake air disperser 7, and finally enters the multi-layer annular solid particle filter assembly 3 through the guide bucket 8 for multi-stage filtration, filtering out solid particles in the exhaust gas and preventing them from accumulating in the inner cavity of the tank 5 or entering subsequent pipelines; then the gas with the solid particles filtered out passes through the circular baffle 1 to change the airflow direction, so that the gas and liquid are initially separated in the collision, further buffering the flow velocity of the intake air, stabilizing the airflow, reducing the risk of liquid hammer, and protecting downstream equipment; finally, the small droplets initially separated in the gas are filtered out by the wire mesh demister 6, preventing them from entering subsequent pipelines; More specifically, the circular plate of the main body of the air intake dispersion component 7 has a conical protrusion in the middle, and through holes are evenly opened in other areas except for the conical protrusion. Understandably, the high-temperature exhaust gas needs to be cooled down before entering the device.

[0024] In some embodiments, the multilayer annular filter element 31 includes: The disk 315 has an outer ring mesh 311, a middle ring mesh 312 and an inner ring mesh 313 coaxially fixedly assembled on its top surface from the outside to the inside; Support rods 314 are fixedly installed on the front, back, left and right sides of the outer wall of the outer ring mesh 311, and their outer ends are fixedly connected to the upper end of the inner cavity of the tank body 5.

[0025] Specifically, in this embodiment, the apertures of the inner annular mesh 313, the middle annular mesh 312, and the outer annular mesh 311 increase sequentially from the inside to the outside. The intake air is guided into the inner annular mesh 313 through the guide bucket 8, and then passes through the middle annular mesh 312 and the outer annular mesh 311 for multi-stage filtration to filter out solid particles in the intake air. Furthermore, a gap is left between the outer annular mesh 311 and the inner cavity of the tank 5 for the flow of filtered gas; More specifically, the outer ring mesh 311 has a cover plate fastened to its upper end, and an air inlet is provided in the middle of the top surface of the cover plate; the lower outer wall of the guide bucket 8 is in contact with the inner wall of the air inlet to prevent gas from overflowing from the top.

[0026] In some embodiments, the solid particle removal assembly 32 includes: The outer shell 321 is embedded in the upper part of the outer wall of the tank body 5; An axial flow fan 322 is fixedly connected to the right side of the outer casing 321, and its airflow is directed towards the outside of the outer casing 321. The front wall of the outer casing 321 has a first strip window 324, into which a filter plate 323 is inserted; The outer wall of filter plate 323 is attached to the inner wall of outer shell 321; A horizontal pipe 327 is fixedly connected to the side of the outer shell 321 near the tank body 5, and its end is sealed. The horizontal tube 327 extends laterally through the multi-layer annular filter element 31; The material suction through-holes 328 are evenly distributed along the length of the upper end of the horizontal tube 327; A second strip-shaped window 325 is provided on the bottom surface of the outer casing 321 near the left side of the filter plate 323, and a solid particle collection box 326 is inserted inside it.

[0027] Specifically in this embodiment, the axial flow fan 322 is connected to an external power source and works. The axial flow fan 322 is used to exhaust the gas inside the outer shell 321 and the horizontal pipe 327. It generates negative pressure suction at the suction hole 328 to suck in the solid particles filtered out in each layer of the multi-layer annular filter element 31. The solid particles enter the horizontal pipe 327 with the gas and flow into the outer shell 321, where they are filtered out by the filter plate 323. Furthermore, the solid particles filtered out by the filter plate 323 accumulate and fall into the solid particle collection box 326 through the second strip window 325. The solid particle collection box 326 is disassembled and cleaned periodically, and then reinstalled after cleaning. More specifically, the filter plate 323 is used to filter out solid particles, effectively preventing dust and impurities from entering the axial flow fan 322; Understandably, the filter plate 323 can be pulled out from the first strip window 324 for easy cleaning and replacement, and the filter plate 323 is positioned by friction when inserted into the first strip window 324.

[0028] In some embodiments, the tank 5 includes: The stainless steel tank 51 has an inner wall lined with a plastic lining 52. The plastic lining 52 comes into contact with the exhaust gas, which improves the corrosion resistance of the inner wall of the stainless steel tank 51.

[0029] In some embodiments, the flushing and draining structure 9 includes: A valved discharge pipe 91 is fixedly connected at its upper end to the middle of the bottom surface of the tank body 5. A flushing port 92 is fixedly connected to the lower edge of the outer wall of the tank body 5, with its outer end tilted downwards.

[0030] Specifically in this embodiment, the valved discharge pipe 91 can discharge the sludge that has accumulated at the lower end of the inner cavity of the tank 5 by opening the valve; Furthermore, a high-pressure water gun is connected to the lower end of the flushing port 92 to flush the inside of the tank 5; More specifically, the flushing port 92 has a downward-sloping side, making it easier to connect a high-pressure water gun.

[0031] In some embodiments, a pressure gauge 13 and a safety valve 12 are fixedly connected to the edge of the top surface of the cover plate 2; A level gauge 14 is fixedly installed at the edge of the top surface of the cover plate 2, and its lower end extends to the lower end of the inner cavity of the tank body 5.

[0032] Specifically in this embodiment, pressure gauge 13 is used to monitor the pressure inside tank 5 in real time. When the pressure inside tank 5 rises abnormally, it is automatically depressurized through safety valve 12 to ensure equipment safety. Furthermore, the level gauge 14 facilitates the detection of the liquid level separated in the tank 5, and the valved discharge pipe 91 opens the valve and discharges the liquid in a timely manner.

[0033] In some embodiments, a gas detection interface 11 is fixedly connected to the upper end of the outer wall of the tank 5; The lower end of the outer wall of tank 5 is fixedly connected to manhole 10.

[0034] Specifically, in this embodiment, a valve is provided on the gas detection interface 11, and a toxic or combustible gas detection probe is installed on the outer end of the gas detection interface 11. Opening the gas detection interface 11 and the valve facilitates the detection of the components of pesticide production exhaust gas.

[0035] In some embodiments, a support frame 4 is fixedly mounted on the lower end of the tank body 5, which includes: The base plate 41 has a support column 42 fixedly mounted on its upper edge in a uniform circumference. The bottom surface of the tank body 5 is fixedly connected to the upper end of the support column 42.

[0036] Specifically in this embodiment, the bottom area of ​​the bottom plate 41 is larger than the outer diameter of the tank body 5, providing better support. Furthermore, the support column 42 has an elevation device to facilitate sewage discharge.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tail gas buffer tank for pesticide production, characterized in that, include: The tank body (5) has a cover plate (2) fixedly mounted on its upper end by bolts. The lower end of the outer wall of the tank (5) is fixedly connected to an air outlet (53), and the middle of the top surface of the cover plate (2) is fixedly connected to an air inlet (21). The inner cavity of the tank (5) is fixedly equipped from top to bottom with an air inlet dispersion component (7), a flow guide bucket (8), a multi-layer annular solid particle filter assembly (3), a circular baffle plate (1), and a wire mesh demister (6). The multi-layer annular solid particle filtration assembly (3) includes: A multi-layer annular filter element (31) is fixedly assembled at the upper end of the inner cavity of the tank body (5); The upper end of the outer wall of the tank (5) is fitted with a solid particle removal component (32), the input end of which passes through the multi-layer annular filter element (31) laterally. The solid particle removal component (32) has uniformly opened suction through holes (328) at its input end. The lower end of the flow guide (8) extends to the middle of the inner cavity of the multi-layer annular filter (31); The wire mesh demister (6) is located above the air outlet (53); The lower end of the tank (5) is equipped with a flushing and sewage discharge structure (9).

2. The tail gas buffer tank for pesticide production according to claim 1, characterized in that, The multi-layer annular filter element (31) includes: The disk (315) has an outer ring mesh (311), a middle ring mesh (312) and an inner ring mesh (313) coaxially fixed on its top surface from the outside to the inside. Support rods (314) are fixedly installed on the front, back, left and right sides of the outer wall of the outer ring mesh (311), and their outer ends are fixedly connected to the upper end of the inner cavity of the tank (5).

3. The tail gas buffer tank for pesticide production according to claim 1, characterized in that, The solid particle removal assembly (32) includes: The outer shell (321) is embedded in the upper part of the outer wall of the tank body (5); An axial flow fan (322) is fixedly connected to the right side of the outer casing (321), and its airflow is directed towards the outside of the outer casing (321); The front wall of the outer shell (321) has a first strip window (324) through which a filter plate (323) is inserted. The outer wall of the filter plate (323) is attached to the inner wall of the outer shell (321); The outer shell (321) is fixedly connected to a horizontal tube (327) on the side near the tank (5), and its end is sealed. The horizontal tube (327) extends laterally through the multi-layer annular filter element (31). The suction through holes (328) are evenly opened at the upper end of the horizontal tube (327) along the length direction; The bottom surface of the outer shell (321) near the left side of the filter plate (323) has a second strip window (325) which is fitted with a solid particle collection box (326).

4. The tail gas buffer tank for pesticide production according to claim 1, characterized in that, The tank (5) includes: The stainless steel tank (51) has its inner wall lined with a plastic lining (52).

5. The tail gas buffer tank for pesticide production according to claim 1, characterized in that, The flushing and sewage discharge structure (9) includes: A valved discharge pipe (91) has its upper end fixedly connected to the middle of the bottom surface of the tank body (5); The lower edge of the outer wall of the tank (5) is fixedly connected to a rinsing port (92), and its outer end is inclined downward.

6. The tail gas buffer tank for pesticide production according to claim 1, characterized in that, A pressure gauge (13) and a safety valve (12) are fixedly connected at the top edge of the cover plate (2).

7. The tail gas buffer tank for pesticide production according to claim 1, characterized in that, A level gauge (14) is fixedly mounted on the top edge of the cover plate (2), and its lower end extends to the lower end of the inner cavity of the tank body (5).

8. A tail gas buffer tank for pesticide production according to claim 1, characterized in that, A gas detection interface (11) is fixedly connected to the upper end of the outer wall of the tank (5).

9. A tail gas buffer tank for pesticide production according to claim 1, characterized in that, The lower end of the outer wall of the tank (5) is fixedly connected to a manhole (10).

10. A tail gas buffer tank for pesticide production according to claim 1, characterized in that, The lower end of the tank (5) is fixedly equipped with a support frame (4), which includes: The base plate (41) has a support column (42) evenly and circumferentially fixedly mounted on its upper edge. The bottom surface of the tank (5) is fixedly connected to the upper end of the support column (42).

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