Tail gas absorption device in trichlorotoluene production
By adopting a combination of absorption tank and activated carbon adsorption plate in the production of trichlorotoluene, the problem of poor tail gas absorption effect was solved, and efficient purification and subsequent treatment of tail gas were achieved.
Patent Information
- Application Number
- CN202520567140.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-28
AI Technical Summary
In existing technologies, the tail gas absorption effect during the production of trichlorotoluene is poor, making it difficult to meet the requirements for efficient absorption and subsequent treatment.
The system employs a combination structure of absorption tank, storage tank, pump, drain pipe and drain spray plate, combined with activated carbon adsorption plate, to achieve effective contact between the absorption liquid and the exhaust gas and physical adsorption of organic matter, thereby purifying the exhaust gas.
It achieves efficient absorption and purification of exhaust gas, meets subsequent treatment requirements, and removes pollutants from the exhaust gas.
Smart Images
Figure CN223931047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of trichlorotoluene production, specifically a tail gas absorption device in the production of trichlorotoluene. Background Technology
[0002] Trichlorotoluene, also known as benzyl trichloride, is an organic compound consisting of a trichloromethyl group linked to a benzene ring. It is an important raw material in pesticide production, used to synthesize various herbicides, insecticides, and fungicides. In dye manufacturing, it is used as an intermediate in the synthesis of various organic dyes.
[0003] The production of trichlorotoluene generates a large amount of tail gas, which needs to be absorbed and treated. However, current tail gas recovery methods typically use condensation recovery devices to absorb the tail gas, which lowers the temperature to change the organic matter in the tail gas from a gaseous state to a liquid state, thereby achieving separation and recovery. However, this method has poor absorption efficiency and cannot meet the subsequent treatment needs of the tail gas. Therefore, those skilled in the art have provided a tail gas absorption device for the production of trichlorotoluene to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to provide a tail gas absorption device for the production of trichlorotoluene, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A tail gas absorption device for trichlorotoluene production includes an absorption tank. A fixing plate is fixedly connected to the left side of the absorption tank, and a filter cylinder is fixedly connected to the left side of the fixing plate. A support plate is fixedly connected to the right side of the absorption tank. A storage tank is fixedly installed on the upper surface of the support plate, and a pump is fixedly installed on the upper surface of the storage tank. A drain pipe is fixedly connected to the output end of the pump. The end of the drain pipe away from the pump passes through the absorption tank and extends into the interior of the absorption tank. A drain spray plate is fixedly connected to the end of the drain pipe away from the pump. A connecting pipe is fixedly connected to the upper surface of the absorption tank. The end of the connecting pipe away from the absorption tank passes through the filter cylinder and extends into the interior of the filter cylinder. An activated carbon adsorption plate is fixedly installed on the inner ring of the filter cylinder.
[0007] As a further embodiment of this utility model: the upper surface of the liquid storage tank is provided with a liquid injection hole, the input end of the liquid pump is fixedly connected to a liquid extraction pipe, and the bottom end of the liquid extraction pipe penetrates the liquid storage tank and extends into the interior of the liquid storage tank.
[0008] As a further improvement of this utility model: a reinforcing plate is fixedly connected to the right side of the absorption tank, the upper surface of the reinforcing plate is fixedly connected to the bottom surface of the support plate, and multiple support legs are fixedly connected to the bottom surface of the absorption tank.
[0009] As a further improvement of this utility model: the inner bottom wall of the filter cylinder is fixedly connected to an exhaust hood, and an exhaust fan is fixedly installed on the inner wall of the exhaust hood, with the exhaust fan located below the activated carbon adsorption plate.
[0010] As a further improvement of this utility model: an air inlet pipe is provided at the bottom of the absorption tank, and the top end of the air inlet pipe penetrates the absorption tank and extends into the interior of the absorption tank.
[0011] As a further improvement of this utility model: a flow divider plate is fixedly installed on the inner wall of the absorption tank, and the flow divider plate is located above the drain spray plate.
[0012] As a further improvement of this utility model: a controller is fixedly installed on the front of the liquid storage tank, and the controller is electrically connected to the liquid pump and the exhaust fan respectively through wires.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This trichlorotoluene production tail gas absorption device, through the setting of a storage tank, can store the absorbent liquid. At the same time, by using a liquid pump, a drain pipe and a drain spray plate, the drain spray plate can spray the tail gas inside the absorption tank. This allows the sprayed absorbent liquid to come into contact with the tail gas, so that the hydrogen chloride in the tail gas can be absorbed by the absorbent liquid, thereby achieving the purpose of purifying the tail gas. Through the activated carbon adsorption plate set inside the filter cartridge, organic matter and other pollutants in the tail gas can be physically adsorbed to remove pollutants. Thus, the device can efficiently absorb and treat the tail gas, meeting the subsequent treatment needs of the tail gas. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of a tail gas absorption device in the production of trichlorotoluene, viewed from the front.
[0016] Figure 2 This is a cross-sectional view of a tail gas absorption device in the production of trichlorotoluene;
[0017] Figure 3 This is a top-view cross-sectional view of a tail gas absorption device in the production of trichlorotoluene.
[0018] Figure 4 This is a cross-sectional view of the liquid storage tank in a tail gas absorption device during the production of trichlorotoluene.
[0019] In the diagram: 1. Absorption tank; 2. Fixing plate; 3. Filter cartridge; 4. Support plate; 5. Storage tank; 6. Pump; 7. Drain pipe; 8. Drain spray plate; 9. Connecting pipe; 10. Activated carbon adsorption plate; 11. Exhaust fan; 12. Exhaust hood; 13. Diverter plate; 14. Air inlet pipe; 15. Support leg; 16. Reinforcing plate; 17. Pump pipe; 18. Injection hole; 19. Controller. Detailed Implementation
[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not 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. Furthermore, the terms "first," "second," etc., 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. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 Figures 1-4In this embodiment of the present invention, a tail gas absorption device for trichlorotoluene production includes an absorption tank 1. A fixing plate 2 is fixedly connected to the left side of the absorption tank 1, and a filter cylinder 3 is fixedly connected to the left side of the fixing plate 2. A support plate 4 is fixedly connected to the right side of the absorption tank 1. A storage tank 5 is fixedly installed on the upper surface of the support plate 4, and a pump 6 is fixedly installed on the upper surface of the storage tank 5. A drain pipe 7 is fixedly connected to the output end of the pump 6. The end of the drain pipe 7 away from the pump 6 passes through the absorption tank 1 and extends into the interior of the absorption tank 1. The end of the drain pipe 7 away from the pump 6 is fixedly connected to... The absorber has a drain spray plate 8 and a connecting pipe 9 fixedly connected to the upper surface of the absorber tank 1. The end of the connecting pipe 9 away from the absorber tank 1 passes through the filter cylinder 3 and extends into the interior of the filter cylinder 3. An activated carbon adsorption plate 10 is fixedly installed on the inner ring of the filter cylinder 3. The drain spray plate 8 sprays the exhaust gas inside the absorber tank 1, which allows the sprayed absorbent to come into contact with the exhaust gas, so that some components in the exhaust gas, such as hydrogen chloride, are absorbed by the absorbent, thereby achieving the purpose of purifying the exhaust gas. Through the setting of the activated carbon adsorption plate 10, organic matter in the exhaust gas can be physically adsorbed to achieve the purpose of removing pollutants.
[0023] As a further improvement of this utility model: the upper surface of the liquid storage tank 5 is provided with an injection hole 18, the input end of the liquid pump 6 is fixedly connected to a liquid extraction pipe 17, the bottom end of the liquid extraction pipe 17 passes through the liquid storage tank 5 and extends into the interior of the liquid storage tank 5, the right side of the absorption tank 1 is fixedly connected to a reinforcing plate 16, the upper surface of the reinforcing plate 16 is fixedly connected to the bottom surface of the support plate 4, and the bottom surface of the absorption tank 1 is fixedly connected to multiple support legs 15. The injection hole 18 and the liquid extraction pipe 17 facilitate the injection and extraction of the absorption liquid. The reinforcing plate 16 serves to support the support plate 4, making the support plate 4 more stable.
[0024] As a further improvement of this utility model: an exhaust hood 12 is fixedly connected to the inner bottom wall of the filter cylinder 3, and an exhaust fan 11 is fixedly installed on the inner wall of the exhaust hood 12. The exhaust fan 11 is located below the activated carbon adsorption plate 10. An air inlet pipe 14 is provided below the absorption tank 1. The top end of the air inlet pipe 14 passes through the absorption tank 1 and extends into the interior of the absorption tank 1. A flow divider 13 is fixedly installed on the inner wall of the absorption tank 1. The flow divider 13 is located above the drain spray plate 8. A controller 19 is fixedly installed on the front of the liquid storage tank 5. The controller 19 is electrically connected to the liquid pump 6 and the exhaust fan 11 through wires. By setting the exhaust hood 12 and the exhaust fan 11, the absorbed gas can be discharged and the gas flow speed at the activated carbon adsorption plate 10 can be accelerated. The flow divider 13 can guide and distribute the exhaust gas flow. The controller 19 can control the operation of the liquid pump 6 and the exhaust fan 11.
[0025] The working principle of this utility model is as follows: First, the air inlet pipe 14 is connected to the exhaust gas pipe, allowing the exhaust gas to be discharged inside the absorption tank 1. Then, the liquid pump 6 is started, and the absorbent liquid inside the storage tank 5 is drawn through the liquid extraction pipe 17 and transported through the drain pipe 7. Finally, the exhaust gas inside the absorption tank 1 is sprayed through the drain spray plate 8, allowing the sprayed absorbent liquid to come into contact with the exhaust gas, so that certain components in the exhaust gas, such as hydrogen chloride, are absorbed by the absorbent liquid, thereby achieving the purpose of purifying the exhaust gas. Then, the gas initially absorbed flows to the interior of the filter cartridge 3 through the connecting pipe 9, and the organic matter in the exhaust gas is physically adsorbed by the activated carbon adsorption plate 10, thereby achieving the purpose of removing pollutants.
[0026] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A tail gas absorption device for trichlorotoluene production, comprising an absorption tank (1), characterized in that, A fixing plate (2) is fixedly connected to the left side of the absorption tank (1). A filter cylinder (3) is fixedly connected to the left side of the fixing plate (2). A support plate (4) is fixedly connected to the right side of the absorption tank (1). A storage tank (5) is fixedly installed on the upper surface of the support plate (4). A pump (6) is fixedly installed on the upper surface of the storage tank (5). A drain pipe (7) is fixedly connected to the output end of the pump (6). The end of the drain pipe (7) away from the pump (6) passes through the absorption tank (1) and extends into the interior of the absorption tank (1). A drain spray plate (8) is fixedly connected to the end of the drain pipe (7) away from the pump (6). A connecting pipe (9) is fixedly connected to the upper surface of the absorption tank (1). The end of the connecting pipe (9) away from the absorption tank (1) passes through the filter cylinder (3) and extends into the interior of the filter cylinder (3). An activated carbon adsorption plate (10) is fixedly installed on the inner ring of the filter cylinder (3).
2. The tail gas absorption device for trichlorotoluene production according to claim 1, characterized in that, The upper surface of the liquid storage tank (5) is provided with an injection hole (18), and the input end of the liquid pump (6) is fixedly connected to a liquid extraction pipe (17). The bottom end of the liquid extraction pipe (17) penetrates the liquid storage tank (5) and extends into the interior of the liquid storage tank (5).
3. The tail gas absorption device for trichlorotoluene production according to claim 1, characterized in that, A reinforcing plate (16) is fixedly connected to the right side of the absorption tank (1). The upper surface of the reinforcing plate (16) is fixedly connected to the bottom surface of the support plate (4). Multiple support legs (15) are fixedly connected to the bottom surface of the absorption tank (1).
4. The tail gas absorption device for trichlorotoluene production according to claim 1, characterized in that, The inner bottom wall of the filter cylinder (3) is fixedly connected to an exhaust hood (12), and an exhaust fan (11) is fixedly installed on the inner wall of the exhaust hood (12). The exhaust fan (11) is located below the activated carbon adsorption plate (10).
5. The tail gas absorption device for trichlorotoluene production according to claim 1, characterized in that, An air inlet pipe (14) is provided below the absorption tank (1), and the top end of the air inlet pipe (14) penetrates the absorption tank (1) and extends into the interior of the absorption tank (1).
6. The tail gas absorption device for trichlorotoluene production according to claim 1, characterized in that, A flow divider plate (13) is fixedly installed on the inner wall of the absorption tank (1), and the flow divider plate (13) is located above the drain spray plate (8).
7. The tail gas absorption device for trichlorotoluene production according to claim 1, characterized in that, A controller (19) is fixedly installed on the front of the liquid storage tank (5). The controller (19) is electrically connected to the liquid pump (6) and the exhaust fan (11) respectively via wires.