Benzotriazole synthesis liquid acidification tail gas treatment system

Abstract

The utility model discloses a benzotriazole synthesis liquid acidification tail gas treatment system, which relates to the technical field of organic chemical industry and comprises a spray tower and a conveying pipe, the storage assembly comprises a base, a placement groove is formed in the side, close to the spray tower, of the base, an inner cavity of the placement groove is filled with activated carbon, two supporting frame assemblies are fixedly connected to the middle of the inner cavity of the base, and a second filter plate is slidably connected to the upper portion of the supporting frame assembly close to the side of the placement groove; a filter plate I is slidably connected to the upper part of the support frame component far away from one side of the placing groove. Solid particles in tail gas are intercepted through the first filter plate and the second filter plate, so that the situation that the solid particles are conveyed into the inner cavity of the spray tower along with the tail gas can be reduced; harmful gas, peculiar smell substances and part of particulate matters in the tail gas are adsorbed on the surface of the activated carbon, so that the tail gas is purified, the tail gas can be pretreated, and the tail gas treatment efficiency and quality in the later period are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of organic chemical industry, and particularly relates to an acidification tail gas treatment system for benzotriazole synthesis liquid. Background Art

[0002] Benzotriazole is an important fine chemical product, which is widely used in the fields of gas phase corrosion inhibitors for copper and copper alloys, circulating water treatment agents, automotive antifreeze, photographic antifogging agents, polymer stabilizers, plant growth regulators, lubricating oil additives, ultraviolet absorbers, etc. Its production methods mainly include o-phenylenediamine method, o-nitrophenylhydrazine method, benzimidazolone method, etc. Among them, the o-phenylenediamine method is a relatively common production method due to its high yield. In the production process of benzotriazole, the acidification step is an essential link. In this step, in order to adjust the pH value of the solution, an acid (such as sulfuric acid) is usually added, which triggers a series of chemical reactions. However, in this process, tail gas containing nitrogen oxides (such as NOx) will be generated. If these tail gases are directly discharged into the atmosphere, they will cause environmental pollution.

[0003] The traditional treatment method is often to directly collect these tail gases and transport them to a spray tower, and use an alkali solution for chemical reactions to remove the harmful gases therein. However, this treatment method not only has low efficiency, but also causes the particulate matter and impurities carried in the tail gas to be easily mixed with the alkali solution during the spraying process and flow back to the storage tank along with the circulation of the alkali solution. These particulate impurities continuously accumulate in the alkali solution, not only reducing the purity and treatment effect of the alkali solution, but also when used again, they will be transported to the pipeline and nozzle together with the alkali solution. Due to the physical properties of the particulate matter, they are easily deposited at the pipeline and nozzle, resulting in blockage and affecting the normal operation of the spray tower.

[0004] Chinese patent document CN207126336U discloses an acidification tail gas treatment system, including a heat exchange device, a jet pump and a spray absorption device. The heat exchange device is used to exchange heat with the acidification tail gas to cool the acidification tail gas. The two ends of the jet pump are respectively connected to the heat exchange device and the spray absorption device to transport the cooled acidification tail gas to the spray absorption device for absorption treatment; however, there are still the following defects in the implementation process:

[0005] Although the device in the above-mentioned literature can improve the absorption effect of acidified tail gas by using a spray absorption device, the device in the above-mentioned literature cannot filter particulate impurities in the acidified tail gas of benzotriazole synthesis liquid. Therefore, when using the device in the above-mentioned literature, it often causes the particulate matter and impurities carried in the tail gas to easily mix with the alkali solution during the spraying process and flow back to the storage tank along with the circulation of the alkali solution. These particulate impurities continuously accumulate in the alkali solution, not only reducing the purity and treatment effect of the alkali solution, but also, when used again, being transported to the pipeline and nozzle together with the alkali solution. Due to the physical properties of the particulate matter, they easily form deposits at the pipeline and nozzle, resulting in blockages and affecting the normal operation of the spray tower. Summary of the Invention

[0006] The purpose of the present utility model is to provide a treatment system for acidified tail gas of benzotriazole synthesis liquid to solve the problems raised in the above-mentioned background technology.

[0007] To solve the above technical problems, the technical solution adopted by the present utility model is:

[0008] A treatment system for acidified tail gas of benzotriazole synthesis liquid includes a spray tower and a delivery pipe; a liquid delivery assembly is arranged on one side of the spray tower, and the liquid delivery assembly is used to spray alkali solution into the inner cavity of the spray tower to treat the acidified tail gas of benzotriazole synthesis liquid. One side of the delivery pipe is fixedly connected with a housing I, and the inner cavity of the delivery pipe is communicated with the inner cavity of the housing I. The housing I is fixedly connected with a storage assembly, and the storage assembly includes a base. A placement groove is opened on one side of the base close to the spray tower, and activated carbon is filled in the inner cavity of the placement groove. Two support frame assemblies are fixedly connected to the middle of the inner cavity of the base. A second filter plate is slidably connected to the upper part of the support frame assembly close to the placement groove, and a first filter plate is slidably connected to the upper part of the support frame assembly far from the placement groove.

[0009] Adopting the above technical solution, in this solution, the collected acidified tail gas of benzotriazole synthesis liquid can be transported into the inner cavity of the spray tower through the delivery pipe, and then the alkali solution can be sprayed into the inner cavity of the spray tower through the liquid delivery assembly to treat the acidified tail gas of benzotriazole synthesis liquid. Before the delivery pipe transports the tail gas into the inner cavity of the spray tower, it needs to pass through the inner cavity of the housing I. When passing through the inner cavity of the housing I, the solid particulate matter in the tail gas can be intercepted by the first filter plate and the second filter plate, so that the solid particulate matter can be reduced from being transported into the inner cavity of the spray tower together with the tail gas. Then, when the liquid delivery assembly treats the tail gas, it will cause particulate matter and impurities to mix with the alkali solution during the spraying process and flow back to the storage tank along with the circulation of the alkali solution. By filling activated carbon in the inner cavity of the placement groove, the harmful gases, odor substances and some particulate matter in the tail gas can be adsorbed on its surface, thereby purifying the tail gas.

[0010] A further improvement of the technical solution of the present utility model lies in that: the support frame assembly includes a partition plate, the lower end of the partition plate is fixedly connected to the bottom wall of the inner cavity of the base, a chute is provided in the upper part of the partition plate, and brushes are symmetrically and fixedly connected to the upper part of the partition plate.

[0011] By adopting the above technical solution, in this solution, by fixedly connecting the lower end of the partition plate to the bottom wall of the inner cavity of the base, a space can be isolated in the lower part of the inner cavity of the base by the partition plate for storing impurities such as particulate matter intercepted by the second filter plate or the first filter plate. By providing a chute in the upper part of the partition plate, it is convenient to slidably connect the first filter plate or the second filter plate to the partition plate through the chute. By symmetrically and fixedly connecting brushes to the upper part of the partition plate, when the first filter plate or the second filter plate needs to be replaced, the two brushes can be used to clean the dust and the like on the first filter plate or the second filter plate.

[0012] A further improvement of the technical solution of the present utility model lies in that: elastic components are symmetrically and fixedly connected to the bottom wall of the inner cavity of the chute. The elastic components include an outer shell two, a spring is fixedly connected to the bottom wall of the inner cavity of the outer shell two, a top column is slidably connected to the inner cavity of the outer shell two, and the bottom wall of the top column is fixedly connected to the spring.

[0013] By adopting the above technical solution, in this solution, by using the elastic force of the spring, the spring can be driven to stretch in the inner cavity of the outer shell two, and then the top column can be driven to slide upward in the inner cavity of the outer shell two. Then, the top column can be used to push the first filter plate or the second filter plate to slide upward in the inner cavity of the chute, so as to facilitate taking out the first filter plate or the second filter plate from the inner cavity of the chute.

[0014] A further improvement of the technical solution of the present utility model lies in that: a top cover is fixedly connected to the upper part of the support frame assembly on the side far away from the placement groove by bolts.

[0015] By adopting the above technical solution, in this solution, by fixedly connecting the top cover to the upper part of the support frame assembly on the side far away from the placement groove, the positions of the first filter plate and the second filter plate can be limited by the top cover, preventing the first filter plate or the second filter plate from being pushed by the elastic component and moving during normal use, thereby affecting the filtration of the first filter plate or the second filter plate.

[0016] A further improvement of the technical solution of the present utility model lies in that: the mesh diameter of the first filter plate is larger than the mesh diameter of the second filter plate.

[0017] With the above technical solution, the mesh diameter of the first filter plate in this solution is larger than that of the second filter plate. Thus, during filtration, since the tail gas will first pass through the first filter plate with a larger mesh diameter when being conveyed into the inner cavity of the first housing, these large-particle impurities can be effectively intercepted in the larger holes, preventing them from further entering and clogging the smaller-diameter mesh holes. As a result, the subsequent filtration process can be more smooth and efficient. Therefore, the mesh diameter of the first filter plate being larger than that of the second filter plate can prevent large-particle impurities from clogging the mesh holes on the second filter plate during filtration. By reasonably setting mesh holes with different diameters, the filtration efficiency and effect can be significantly improved.

[0018] A further improvement of the technical solution of the present utility model lies in that: a confluence funnel is fixedly connected to the lower part of the inner cavity of the spray tower, two placement frames are fixedly connected to the middle part of the inner cavity of the spray tower, ceramic balls are filled in the inner cavities of the two placement frames, and a demister is fixedly connected to the upper part of the inner cavity of the spray tower.

[0019] With the above technical solution, by filling ceramic balls in the inner cavity of the placement frame, a large number of gas-liquid contact surfaces can be formed in the inner cavity of the placement frame, thereby increasing the contact opportunities between the tail gas and the sprayed alkali solution, which helps the harmful gas components in the tail gas to be more fully absorbed by the absorption liquid and improves the tail gas treatment efficiency. By fixedly connecting a confluence funnel to the lower part of the inner cavity of the spray tower, the confluence funnel can be used to collect the alkali solution and then convey the alkali solution back to the lower part of the inner cavity of the spray tower through a one-way valve.

[0020] A further improvement of the technical solution of the present utility model lies in that: the liquid infusion assembly includes a water pipe and two water distribution boxes. A number of spray pipes are annularly and arrayedly opened on the two water distribution boxes. The number of spray pipes is fixedly connected to the inner cavity of the spray tower in common. The spray pipes adjacent to the water pipe are fixedly connected to the water pipe and the inner cavities are communicated.

[0021] With the above technical solution, a number of spray pipes are fixedly connected to the water distribution box in an annular array, and then the alkali solution is conveyed into the inner cavity of the spray pipes by using the water pipe, so that the spray pipes can evenly spray the alkali solution in the inner cavity of the spray tower and then treat the tail gas.

[0022] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0023] 1. The utility model provides a tail gas treatment system for acidifying the benzotriazole synthesis liquid. Through the conveying pipe, the collected tail gas of the acidified benzotriazole synthesis liquid can be conveyed into the inner cavity of the spray tower. Then, through the liquid infusion component, the alkali liquid can be sprayed in the inner cavity of the spray tower to treat the tail gas of the acidified benzotriazole synthesis liquid. Before the conveying pipe conveys the tail gas into the inner cavity of the spray tower, it needs to pass through the inner cavity of the outer shell one. When passing through the inner cavity of the outer shell one, the filter plate one and the filter plate two can intercept the solid particles in the tail gas, so as to reduce the solid particles being conveyed into the inner cavity of the spray tower together with the tail gas. Then, when the liquid infusion component treats the tail gas, it will cause the particles and impurities to be mixed with the alkali liquid during the spraying process and flow back to the storage tank along with the circulation of the alkali liquid. By filling activated carbon in the inner cavity of the placement tank, the activated carbon can adsorb harmful gases, odor substances and some particles in the tail gas on its surface, thus purifying the tail gas, and can pre-treat the tail gas, improving the efficiency and quality of the subsequent tail gas treatment.

[0024] 2. The utility model provides a tail gas treatment system for acidifying the benzotriazole synthesis liquid. By filling ceramic balls in the inner cavity of the placement frame, a large number of gas-liquid contact surfaces can be formed in the inner cavity of the placement frame, increasing the contact opportunity between the tail gas and the sprayed alkali liquid, thus helping the harmful gas components in the tail gas to be more fully absorbed by the absorbent liquid and improving the tail gas treatment efficiency. By fixedly connecting a confluence funnel at the lower part of the inner cavity of the spray tower, the confluence funnel can be used to collect the alkali liquid, and then the alkali liquid is conveyed back to the lower part of the inner cavity of the spray tower through a one-way valve, so as to improve the reuse rate of the alkali liquid and reduce the cost of tail gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the present utility model with reference to the drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0027] Figure 2 It is a schematic diagram of the partial structure of the present utility model;

[0028] Figure 3 It is a schematic sectional view of the storage component of the present utility model;

[0029] Figure 4 It is a schematic diagram of the storage component of the present utility model;

[0030] Figure 5 It is a schematic diagram of the support frame component of the present utility model;

[0031] Figure 6 It is a schematic diagram of the elastic component of the present utility model;

[0032] Figure 7Schematic diagram of the filter plate of the present utility model;

[0033] Figure 8 Schematic diagram of the spray tower of the present utility model;

[0034] Figure 9 Schematic diagram of the infusion assembly of the present utility model.

[0035] In the figure: 1. Spray tower; 11. Confluence funnel; 12. Placement frame; 13. Demister; 2. Infusion assembly; 21. Water pipe; 22. Water distribution box; 23. Spray pipe; 3. Delivery pipe; 4. Outer shell one; 5. Storage assembly; 51. Base; 511. Top cover; 52. Placement groove; 53. Support frame assembly; 531. Partition; 532. Slide groove; 533. Brush; 54. Elastic component; 541. Outer shell two; 542. Top column; 543. Spring; 6. Filter plate one; 7. Filter plate two. Detailed implementation manners

[0036] The present utility model will be further described in detail below in conjunction with embodiments:

[0037] Embodiment 1

[0038] As Figure 1 - Figure 3 shown, the present utility model provides a benzotriazole synthesis liquid acidification tail gas treatment system, including a spray tower 1 and a delivery pipe 3; an infusion assembly 2 is arranged on one side of the spray tower 1, and the infusion assembly 2 is used to spray an alkali solution into the inner cavity of the spray tower 1 to treat the benzotriazole synthesis liquid acidification tail gas. One side of the delivery pipe 3 is fixedly connected with an outer shell one 4, and the inner cavity of the delivery pipe 3 communicates with the inner cavity of the outer shell one 4. The outer shell one 4 is fixedly connected with a storage assembly 5. The storage assembly 5 includes a base 51. A placement groove 52 is opened on one side of the base 51 close to the spray tower 1. The inner cavity of the placement groove 52 is filled with activated carbon. Two support frame assemblies 53 are fixedly connected to the middle of the inner cavity of the base 51. A filter plate two 7 is slidably connected to the upper part of the support frame assembly 53 close to the placement groove 52, and a filter plate one 6 is slidably connected to the upper part of the support frame assembly 53 far from the placement groove 52.

[0039] In this embodiment, through the cooperation of the spray tower 1 and the liquid infusion assembly 2, the liquid infusion assembly 2 can be used to transport and spray the alkaline solution into the inner cavity of the spray tower 1, and then treat the tail gas transported into the inner cavity of the spray tower 1. The collected tail gas can be transported into the inner cavities of the spray tower 1 and the outer shell 1 through the delivery pipe 3. The outer shell 1 can be fixedly connected to the base 51, and then it is convenient for the two support frame assemblies 53 to respectively support and connect the first filter plate 6 and the second filter plate 7. The first filter plate 6 and the second filter plate 7 can filter the tail gas multiple times, intercepting impurities such as particulate matter in the tail gas. By providing a placement groove 52 filled with activated carbon in the inner cavity of the placement groove 52, the activated carbon can be used to further filter and intercept the tail gas. Then, the particulate matter and other impurities intercepted by the first filter plate 6 and the second filter plate 7 can be stored in the lower part of the inner cavity of the base 51.

[0040] Embodiment 2

[0041] As Figure 7 、 Figure 9 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the mesh diameter of the first filter plate 6 is larger than the mesh diameter of the second filter plate 7. The liquid infusion assembly 2 includes a water pipe 21 and two water distribution boxes 22. A number of spray pipes 23 are annularly arrayed and opened on both water distribution boxes 22. The number of spray pipes 23 is fixedly connected to the inner cavity of the spray tower 1 together. The spray pipe 23 adjacent to the water pipe 21 is fixedly connected to the water pipe 21, and the inner cavities are communicated.

[0042] In this embodiment, when it is necessary to treat the tail gas, first connect the delivery pipe 3 to the tail gas collection pipeline, and then the tail gas can be transported into the inner cavity of the outer shell 1 by using the delivery pipe 3. After the tail gas is transported into the inner cavity of the outer shell 1, first, the tail gas is filtered by the first filter plate 6, and impurities with larger particles in the tail gas can be intercepted. Then, the tail gas is further filtered by the second filter plate 7, and impurities with smaller particles in the tail gas can be intercepted. Then, the tail gas will be transported into the inner cavity of the placement groove 52, and the activated carbon is used to further filter and treat the tail gas. The harmful gases, odor substances, and fine particulate matter in the tail gas can be adsorbed on its surface by the activated carbon. Then, the filtered tail gas will be transported into the inner cavity of the spray tower 1. Then, the controller is used to control the operation of the water pump, and the alkaline solution in the lower part of the inner cavity of the spray tower 1 can be transported into the inner cavity of the water pipe 21 by using the water pump. Then, the alkaline solution is transported into the inner cavity of the spray pipe 23 through the water pipe 21, and then the alkaline solution is evenly transported into the inner cavities of a number of spray pipes 23 through the spray pipe 23. Thus, the alkaline solution can be sprayed into the inner cavity of the spray tower 1 by using a number of spray pipes 23.

[0043] Embodiment 3

[0044] As Figure 8As shown, based on Embodiment 2, the present utility model provides a technical solution: Preferably, a confluence funnel 11 is fixedly connected to the lower part of the inner cavity of the spray tower 1, two placement frames 12 are fixedly connected to the middle part of the inner cavity of the spray tower 1, ceramic balls are filled in the inner cavities of the two placement frames 12, and a demister 13 is fixedly connected to the upper part of the inner cavity of the spray tower 1.

[0045] In this embodiment, the tail gas transported into the inner cavity of the spray tower 1 will float upward and then pass through the placement frame 12, so that the ceramic balls filled in the inner cavity of the placement frame 12 can be used to increase the contact opportunity between the tail gas and the alkali liquor sprayed down, which helps the harmful gas components in the tail gas to be more fully absorbed by the absorption liquid, improving the tail gas treatment efficiency. Then, these alkali liquors will gather in the inner cavity of the confluence funnel 11 and then flow back to the lower part of the inner cavity of the spray tower 1 through a one-way valve for storage. The tail gas treated by the alkali liquor will pass through the demister 13, and then the demister 13 can be used to separate the water mist, water vapor or tiny droplets carried in the waste gas, reducing or even avoiding the water carrying amount when the waste gas is discharged, so as to ensure that the gas discharged from the spray tower 1 is cleaner.

[0046] Embodiment 4

[0047] As Figure 4 、 Figure 5 and Figure 6 As shown, based on Embodiment 3, the present utility model provides a technical solution: Preferably, the support frame assembly 53 includes a partition plate 531, the lower end of the partition plate 531 is fixedly connected to the bottom wall of the inner cavity of the base 51, a chute 532 is opened in the upper part of the partition plate 531, brushes 533 are symmetrically fixedly connected to the upper part of the partition plate 531, elastic force components 54 are symmetrically fixedly connected to the bottom wall of the inner cavity of the chute 532, the elastic force component 54 includes an outer shell two 541, a spring 543 is fixedly connected to the bottom wall of the inner cavity of the outer shell two 541, a top column 542 is slidably connected to the inner cavity of the outer shell two 541, the bottom wall of the top column 542 is fixedly connected to the spring 543, and a top cover 511 is fixedly connected to the upper part of the support frame assembly 53 on the side far from the placement groove 52 by bolts.

[0048] In this embodiment, when it is necessary to clean or replace the first filter plate 6 or the second filter plate 7, the storage component 5 can be separated from the first housing 4, and then the bolts on the top cover 511 are removed, so that the top cover 511 is separated from the support frame component 53 on the side away from the placement groove 52, releasing the position limitation of the first filter plate 6 and the second filter plate 7. Then, under the elastic force of the spring 543, the spring 543 will be driven to stretch, so as to push the top column 542 to move upward in the inner cavity of the second housing 541. Then, the top column 542 is used to push the first filter plate 6 or the second filter plate 7 to slide upward in the inner cavity of the sliding groove 532. When the first filter plate 6 or the second filter plate 7 slides upward, the dust and other impurities on its surface can be cleaned by the brush 533. At the same time, when the first filter plate 6 or the second filter plate 7 moves upward a certain distance, it is convenient for the staff to take out the first filter plate 6 or the second filter plate 7 from the inner cavity of the sliding groove 532, and then the replacement of the first filter plate 6 or the second filter plate 7 is realized.

[0049] The working principle of the benzotriazole synthesis liquid acidification tail gas treatment system will be specifically described below.

[0050] As Figure 1 - Figure 9 shown, when it is necessary to treat the tail gas, first connect the conveying pipe 3 to the tail gas collection pipeline, and then the tail gas can be conveyed into the inner cavity of the first housing 4 by the conveying pipe 3. After the tail gas is conveyed into the inner cavity of the first housing 4, the tail gas is first filtered by the first filter plate 6, and the larger particles and other impurities in the tail gas can be intercepted. Then, the tail gas is further filtered by the second filter plate 7, and the smaller particles and other impurities in the tail gas can be intercepted. Then, the tail gas will be conveyed into the inner cavity of the placement groove 52, and the tail gas is further filtered by the activated carbon. The harmful gases, odor substances, and fine particles in the tail gas can be adsorbed on the surface of the activated carbon. Then, the filtered tail gas will be conveyed into the inner cavity of the spray tower 1. Then, the controller is used to control the operation of the water pump, and the water pump can convey the alkali solution at the lower part of the inner cavity of the spray tower 1 into the inner cavity of the water pipe 21, and then the alkali solution is conveyed into the inner cavity of the spray pipe 23 through the water pipe 21, and then the alkali solution is evenly conveyed into the inner cavity of several spray pipes 23 through the spray pipe 23, so that the alkali solution can be sprayed in the inner cavity of the spray tower 1 by several spray pipes 23;

[0051] The tail gas transported into the inner cavity of the spray tower 1 will float upward and then pass through the placement frame 12. Thus, the ceramic balls filled in the inner cavity of the placement frame 12 can be utilized to increase the contact opportunity between the tail gas and the alkali liquor sprayed down, which helps the harmful gas components in the tail gas to be more fully absorbed by the absorbent liquid, improving the tail gas treatment efficiency. Then, these alkali liquors will gather in the inner cavity of the confluence funnel 11 and then flow back to the lower part of the inner cavity of the spray tower 1 through the one-way valve for storage. The tail gas treated by the alkali liquor will pass through the demister 13, and then the demister 13 can be used to separate the water mist, water vapor or tiny droplets carried in the waste gas, reducing or even avoiding the water carrying amount when the waste gas is discharged, so as to ensure that the gas discharged from the spray tower 1 is cleaner;

[0052] When it is necessary to clean and replace the filter plate one 6 or the filter plate two 7, the storage component 5 can be separated from the outer shell one 4, and then the bolts on the top cover 511 are taken out, so that the top cover 511 is separated from the support frame component 53 on the side away from the placement groove 52, releasing the position limitation of the filter plate one 6 and the filter plate two 7. Then, under the elastic force of the spring 543, the spring 543 will be driven to stretch, so as to push the ejector pin 542 to move upward in the inner cavity of the outer shell two 541. Then, the ejector pin 542 is used to push the filter plate one 6 or the filter plate two 7 to slide upward in the inner cavity of the sliding groove 532. When the filter plate one 6 or the filter plate two 7 slides upward, the dust and other impurities on its surface can be cleaned by the brush 533. At the same time, when the filter plate one 6 or the filter plate two 7 moves upward a certain distance, it is convenient for the staff to take out the filter plate one 6 or the filter plate two 7 from the inner cavity of the sliding groove 532, and then the replacement of the filter plate one 6 or the filter plate two 7 is realized.

[0053] The above text generally describes the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A benzotriazole synthesis liquid acidification tail gas treatment system, comprising a spray tower (1) and a delivery pipe (3); characterized in that: On one side of the spray tower (1), there is an infusion assembly (2) which is used to spray the alkali solution into the inner cavity of the spray tower (1) to treat the acidified tail gas of the benzotriazole synthesis solution. On one side of the delivery pipe (3), there is a housing one (4) fixedly connected, and the inner cavity of the delivery pipe (3) is communicated with the inner cavity of the housing one (4). The housing one (4) is fixedly connected with a storage assembly (5). The storage assembly (5) includes a base (51). On the side of the base (51) close to the spray tower (1), there is a placement groove (52) which is filled with activated carbon in its inner cavity. In the middle of the inner cavity of the base (51), there are two support frame assemblies (53) fixedly connected. On the upper part of the support frame assembly (53) close to the placement groove (52), there is a filter plate two (7) slidably connected. On the upper part of the support frame assembly (53) far from the placement groove (52), there is a filter plate one (6) slidably connected.

2. The acidification tail gas treatment system for benzotriazole synthesis liquid according to claim 1, wherein: The support frame assembly (53) includes a partition plate (531). The lower end of the partition plate (531) is fixedly connected with the bottom wall of the inner cavity of the base (51). On the upper part of the partition plate (531), there is a chute (532). On the upper part of the partition plate (531), there are two brushes (533) symmetrically fixedly connected.

3. The acidification tail gas treatment system for benzotriazole synthesis liquid according to claim 2, wherein: On the bottom wall of the inner cavity of the chute (532), there are two elastic force assemblies (54) symmetrically fixedly connected. The elastic force assembly (54) includes a housing two (541). On the bottom wall of the inner cavity of the housing two (541), there is a spring (543). In the inner cavity of the housing two (541), there is a top column (542) slidably connected. The bottom wall of the top column (542) is fixedly connected with the spring (543).

4. The benzotriazole synthesis liquid acidification tail gas treatment system according to claim 2, wherein: On the upper part of the support frame assembly (53) far from the placement groove (52), there is a top cover (511) fixedly connected by bolts.

5. A benzotriazole synthesis liquid acidification tail gas treatment system according to claim 1, characterized in that: The pore diameter of the filter plate one (6) is larger than that of the filter plate two (7).

6. The acidification tail gas treatment system for benzotriazole synthesis liquid according to claim 1, wherein: At the lower part of the inner cavity of the spray tower (1), there is a confluent funnel (11) fixedly connected. In the middle of the inner cavity of the spray tower (1), there are two placement frames (12) fixedly connected. The inner cavities of the two placement frames (12) are both filled with ceramic balls. At the upper part of the inner cavity of the spray tower (1), there is a demister (13) fixedly connected.

7. A benzotriazole synthesis liquid acidification tail gas treatment system according to claim 1, characterized in that: The infusion assembly (2) includes a water pipe (21) and two water distribution boxes (22). The two water distribution boxes (22) are both provided with a plurality of spray pipes (23) arranged in an annular array. The plurality of spray pipes (23) are jointly fixedly connected with the inner cavity of the spray tower (1). The spray pipe (23) adjacent to the water pipe (21) is fixedly connected with the water pipe (21) and the inner cavities are communicated.

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