Hydrogen chloride and sulfur dioxide absorption treatment system
By designing a hydrogen chloride and sulfur dioxide absorption treatment system, using multi-stage absorption and separation technology, the problems of hydrogen chloride and sulfur dioxide treatment in the biphenopyramidine synthesis process are solved, achieving efficient recycling and environmental protection effects.
Patent Information
- Application Number
- CN202421649125.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-12
AI Technical Summary
In the synthesis process of biphenopyramidine, a large amount of hydrogen chloride and sulfur dioxide are produced, which will lead to severe environmental pollution if left untreated.
A hydrogen chloride and sulfur dioxide absorption treatment system is designed, including an intake cooler, falling film recoverer, distillation tower, condenser and recovery tank. Through multi-stage absorption and separation technology, hydrogen chloride and sulfur dioxide are efficiently recovered and processed.
It effectively reduces the negative impact and pollution of hydrogen chloride and sulfur dioxide on the environment, realizes the recycling and utilization of hydrogen chloride and sulfur dioxide, and has the advantages of reasonable structure and environmental protection.
Smart Images
Figure CN222777880U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tail gas treatment, and in particular relates to a hydrogen chloride and sulfur dioxide absorption treatment system. Background Art
[0002] Bixafen is a commonly used insecticide, which is widely used in the agricultural field. It has high efficiency and broad-spectrum insecticidal properties and has a good effect on controlling various pests. The synthesis process of bixafen is as follows: the main raw materials for the synthesis of bixafen are aniline and pyridine. First, aniline undergoes a gas-phase chlorination reaction to generate dichloroaniline. This reaction is usually carried out in a hydrogen chloride atmosphere, and the catalyst is selected from magnesium chloride or ferric chloride. The obtained dichloroaniline is purified by distillation to obtain high-purity dichloroaniline. Next, the dichloroaniline is subjected to a condensation reaction with pyridine. This reaction needs to be carried out under solvent-free conditions. Usually, an alkali metal salt with hydrogen ion catalytic activity, such as sodium chloride, is selected as a catalyst. During the reaction, the temperature and reaction time must be controlled to ensure the reaction efficiency and product quality. The obtained condensation product is purified by distillation to obtain high-purity bixafen. Therefore, in the process of developing the synthesis process of the new fungicide bixafen, a large amount of hydrogen chloride and sulfur dioxide will be generated. If they are not treated, they will be directly discharged, which will seriously harm the natural environment and cause air pollution. Therefore, it is very necessary to provide a hydrogen chloride and sulfur dioxide absorption and treatment system with a reasonable structure, recycling and utilization, and effective reduction of environmental pollution. Summary of the invention
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a hydrogen chloride and sulfur dioxide absorption and treatment system which has a reasonable structure, realizes recycling and effectively reduces environmental pollution.
[0004] The purpose of the utility model is achieved as follows: a hydrogen chloride and sulfur dioxide absorption treatment system, which includes an intake air cooler, a falling film recovery device is connected to the right side of the intake air cooler, a distillation tower is connected below the falling film recovery device, a sulfur dioxide distillation tower is connected to the left side of the distillation tower, a first condenser is connected to the left side of the sulfur dioxide distillation tower, a first recovery tank is arranged below the first condenser; a second recovery tank is arranged on the left side of the first recovery tank, and a second condenser is arranged above the second recovery tank.
[0005] The intake air cooler includes a rectangular support, a compressor is arranged above the support, a controller is arranged behind the compressor, a heat exchanger is arranged on the right side of the compressor, and inlet pipes are arranged at both upper and lower ends of the heat exchanger; a cooling pipe is arranged inside the support, support plates are arranged at both ends of the cooling pipe, and outlet pipes are arranged on both sides of one end of the cooling pipe close to the compressor.
[0006] The intake air cooler also includes a filter drier, and the filter drier is connected to the heat exchanger and the cooling pipe respectively.
[0007] The compressor is a CSW8573 compressor, the heat exchanger is a X606-250619 heat exchanger, and the filter-dryer is a DCR-0485s filter-dryer.
[0008] The falling film recoverer includes a base and a recovery pipe, the base includes a base frame and an arc-shaped bracket, vertical rods are arranged at the four corners of the base frame, supporting angle irons are installed at the connection between the vertical rods and the base frame, and a "T"-shaped fixing plate is arranged on the top of the vertical rod, and a rod insertion seat is inserted above the fixing plate, and both ends of the bracket are connected to the rod insertion seat through end plates.
[0009] The recovery pipe comprises a tube shell, both ends of which are provided with flange joints, the upper and lower sides of the tube shell are provided with inlets, and the bottom of the flange joints are provided with outlets; a falling film tube is provided inside the tube shell, and the falling film tube is composed of a plurality of absorption liquid unit tubes.
[0010] The inlet air cooler is connected to the falling film recovery device through a first pipeline, and the falling film recovery device is connected to the distillation tower through a second pipeline.
[0011] The top of the distillation tower is connected to the second condenser through a fourth pipeline, and the bottom is connected to the sulfur dioxide distillation tower through a third pipeline.
[0012] The top of the sulfur dioxide distillation tower is connected to the first condenser through a fifth pipeline.
[0013] Beneficial effects of the utility model: the utility model is a hydrogen chloride and sulfur dioxide absorption and treatment system, which can be widely used in industries such as chemical industry, electric power, metallurgy, etc. that produce hydrogen chloride and sulfur dioxide tail gas. Through multi-stage absorption and separation technology, hydrogen chloride and sulfur dioxide are efficiently recovered and treated to reduce their negative impact and pollution on the environment. In use, the tail gas first enters the intake cooler for cooling treatment, and then enters the falling film tube of the falling film recovery device, and contacts with the absorption liquid (such as alkaline solution) in the multiple absorption liquid unit tubes inside the falling film tube, and the harmful gas is converted into soluble chemical by chemical reaction. The liquid after absorption enters the distillation tower, and hydrogen chloride and sulfur dioxide are separated respectively through the distillation process. The outlet at the bottom of the distillation tower is connected to the sulfur dioxide distillation tower, and the outlet at the top is connected to the second condenser. The outlet of the sulfur dioxide distillation tower is connected to the first condenser. The separated hydrogen chloride and sulfur dioxide gases enter the condenser and are converted into liquids through cooling. The condensed liquids enter the second recovery tank (hydrogen chloride receiving tank) and the first recovery tank (sulfur dioxide receiving tank) respectively for recycling. The utility model has the advantages of reasonable structure, recycling and effective reduction of environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the system composition structure of the utility model.
[0015] Figure 2 It is a structural schematic diagram of the intake air cooler of the utility model.
[0016] Figure 3 For this utility model Figure 2 Left view of .
[0017] Figure 4 It is a structural schematic diagram of the falling film recoverer of the utility model.
[0018] Figure 5 For this utility model Figure 4 Exploded diagram.
[0019] In the figure: 1, intake air cooler 11, support 12, compressor 13, heat exchanger 14, inlet pipe 15, cooling pipe 16, support plate 17, outlet pipe 18, filter dryer 19, controller 2, falling film recovery device 21, base 101, base frame 102, vertical rod 103, supporting angle iron 104, fixing plate 105, plug-in rod seat 106, end plate 107, bracket 22, recovery pipe 201, tube shell 202, flange joint 203, inlet 204, outlet 205, falling film pipe 2051, absorption liquid unit pipe 3, first pipeline 4, distillation tower 5, second pipeline 6, sulfur dioxide distillation tower 7, third pipeline 8, first condenser 9, first recovery tank 10, second condenser 20, second recovery tank 30, fourth pipeline 40, fifth pipeline. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings. Example
[0021] like Figure 1-5As shown, a hydrogen chloride and sulfur dioxide absorption treatment system comprises a first sleeve 5 and a second sleeve 9, both ends of the first sleeve 5 and the second sleeve 9 are respectively provided with through holes 11, both ends of the first sleeve 5 and the second sleeve 9 are respectively provided with telescopic rods 2, positioning holes 4 are evenly provided on the telescopic rods 2, the outer ends of the telescopic rods 2 are respectively connected with supporting feet 1, both ends of the first sleeve 5 and the second sleeve 9 are also respectively provided with fixing plates 10, the fixing plates 10 are provided with fixing bolts 3, the middle part of the first sleeve 5 is provided with a first support rod 6, A second support rod 8 is arranged in the middle of the second sleeve 9, the first support rod 6 and the second support rod 8 are connected by a hinge 7, slideways 12 are arranged on the lower sides of the first support rod 6 and the second support rod 8 respectively, a moving device 17 is arranged in the slideway 12, a connecting rod 18 is arranged on the lower side of the moving device 17, a suspension rod 14 is arranged on the lower side of the connecting rod 18, a hoop 16 is arranged on the lower side of the suspension rod 14, a locking plate 13 is arranged on the lower sides of the first support rod 6 and the second support rod 8, and a locking block 19 is arranged on one side of the locking plate 13.
[0022] The utility model is a hydrogen chloride and sulfur dioxide absorption and treatment system, which can be widely used in industries such as chemical industry, electric power, metallurgy, etc. that produce hydrogen chloride and sulfur dioxide tail gas. Through multi-stage absorption and separation technology, hydrogen chloride and sulfur dioxide are efficiently recovered and treated to reduce their negative impact and pollution on the environment. In use, the tail gas first enters the intake air cooler 1 for cooling treatment, and then enters the falling film tube 205 of the falling film recovery device 2, and contacts with the absorption liquid (such as alkaline solution) in the multiple absorption liquid unit tubes 2051 inside the falling film tube 205, and the harmful gas is converted into a soluble compound through a chemical reaction; The liquid after absorption enters the distillation tower 4, and hydrogen chloride and sulfur dioxide are separated respectively through the distillation process. The outlet at the bottom of the distillation tower 4 is connected to the sulfur dioxide distillation tower 6, and the outlet at the top is connected to the second condenser 10. The outlet of the sulfur dioxide distillation tower 6 is connected to the first condenser 8. The separated hydrogen chloride and sulfur dioxide gases enter the condenser and are converted into liquids through cooling. The condensed liquids enter the second recovery tank 20 (hydrogen chloride receiving tank) and the first recovery tank 9 (sulfur dioxide receiving tank) respectively for recycling. The utility model has the advantages of reasonable structure, recycling and effective reduction of environmental pollution. Example
[0023] like Figure 1-5As shown, a hydrogen chloride and sulfur dioxide absorption treatment system includes an intake air cooler 1, a falling film recovery device 2 is connected to the right side of the intake air cooler 1, a distillation tower 4 is connected below the falling film recovery device 2, a sulfur dioxide distillation tower 6 is connected to the left side of the distillation tower 4, a first condenser 8 is connected to the left side of the sulfur dioxide distillation tower 6, a first recovery tank 9 is arranged below the first condenser 8; a second recovery tank 20 is arranged on the left side of the first recovery tank 9, and a second condenser 10 is arranged above the second recovery tank 20.
[0024] The intake air cooler 1 includes a support 11 with a rectangular structure, a compressor 12 is arranged above the support 11, a controller 19 is arranged behind the compressor 12, a heat exchanger 13 is arranged on the right side of the compressor 12, and inlet pipes 14 are arranged at both upper and lower ends of the heat exchanger 13; a cooling pipe 15 is arranged inside the support 11, support plates 16 are arranged at both ends of the cooling pipe 15, and outlet pipes 17 are arranged on both sides of the end of the cooling pipe 15 close to the compressor 12.
[0025] The intake air cooler 1 further includes a filter-dryer 18 , and the filter-dryer 18 is connected to the heat exchanger 13 and the cooling pipe 15 respectively.
[0026] The compressor 12 adopts a CSW8573 compressor, the heat exchanger 13 adopts a X606-250619 heat exchanger, and the filter-dryer 18 adopts a DCR-0485s filter-dryer.
[0027] The falling film recovery device 2 includes a base 21 and a recovery pipe 22, the base 21 includes a base frame 101 and an arc-shaped bracket 107, vertical rods 102 are arranged at the four corners of the base frame 101, supporting angle irons 103 are installed at the connection between the vertical rods 102 and the base frame 101, and a "T"-shaped fixing plate 104 is arranged on the top of the vertical rod 102, and a rod insertion seat 105 is inserted on the top of the fixing plate 104, and both ends of the bracket 107 are connected to the rod insertion seat 105 through end plates 106.
[0028] The recovery pipe 22 includes a tube shell 201, both ends of which are equipped with flange joints 202, the upper and lower sides of the tube shell 201 are provided with inlets 203, and the bottom of the flange joints 202 are provided with outlets 204; a falling film tube 205 is arranged inside the tube shell 201, and the falling film tube 205 is composed of multiple absorption liquid unit tubes 2051.
[0029] The inlet air cooler 1 is connected to the falling film recovery device 2 through a first pipeline 3, and the falling film recovery device 2 is connected to the distillation tower 4 through a second pipeline 5; the inlet air cooler and the falling film recovery device are used for preliminary cooling and absorption of harmful gases in the tail gas.
[0030] The top of the distillation tower 4 is connected to the second condenser 10 through the fourth pipeline 30, and the bottom is connected to the sulfur dioxide distillation tower 6 through the third pipeline 7; the distillation tower is used to separate hydrogen chloride and sulfur dioxide in the absorption liquid.
[0031] The top of the sulfur dioxide distillation tower 6 is connected to the first condenser 8 through a fifth pipeline 40; the condenser is used to condense the separated gas into liquid, the recovery tank is used to store the condensed hydrogen chloride and sulfur dioxide liquid, and the pipeline system is used to connect various components to ensure the smooth flow of tail gas and liquid.
[0032] In this embodiment, the present invention can efficiently recover and treat hydrogen chloride and sulfur dioxide tail gas, reducing environmental pollution; the present invention converts harmful gases into treatable compounds through chemical reactions, reducing harm to the environment.
[0033] The utility model is a hydrogen chloride and sulfur dioxide absorption and treatment system, which can be widely used in industries such as chemical industry, electric power, metallurgy, etc. that produce hydrogen chloride and sulfur dioxide tail gas. Through multi-stage absorption and separation technology, hydrogen chloride and sulfur dioxide are efficiently recovered and treated to reduce their negative impact and pollution on the environment. In use, the tail gas first enters the intake air cooler 1 for cooling treatment, and then enters the falling film tube 205 of the falling film recovery device 2, and contacts with the absorption liquid (such as alkaline solution) in the multiple absorption liquid unit tubes 2051 inside the falling film tube 205, and the harmful gas is converted into a soluble compound through a chemical reaction; The liquid after absorption enters the distillation tower 4, and hydrogen chloride and sulfur dioxide are separated respectively through the distillation process. The outlet at the bottom of the distillation tower 4 is connected to the sulfur dioxide distillation tower 6, and the outlet at the top is connected to the second condenser 10. The outlet of the sulfur dioxide distillation tower 6 is connected to the first condenser 8. The separated hydrogen chloride and sulfur dioxide gases enter the condenser and are converted into liquids through cooling. The condensed liquids enter the second recovery tank 20 (hydrogen chloride receiving tank) and the first recovery tank 9 (sulfur dioxide receiving tank) respectively for recycling. The utility model has the advantages of reasonable structure, recycling and effective reduction of environmental pollution.
Claims
1. A hydrogen chloride and sulfur dioxide absorption treatment system, comprising an intake air cooler, characterized in that: A falling film recovery device is connected to the right side of the intake air cooler, a distillation tower is connected below the falling film recovery device, a sulfur dioxide distillation tower is connected to the left side of the distillation tower, a first condenser is connected to the left side of the sulfur dioxide distillation tower, a first recovery tank is arranged below the first condenser; a second recovery tank is arranged on the left side of the first recovery tank, and a second condenser is arranged above the second recovery tank.
2. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 1, characterized in that: The intake air cooler includes a rectangular support, a compressor is arranged above the support, a controller is arranged behind the compressor, a heat exchanger is arranged on the right side of the compressor, and inlet pipes are arranged at both upper and lower ends of the heat exchanger; a cooling pipe is arranged inside the support, support plates are arranged at both ends of the cooling pipe, and outlet pipes are arranged on both sides of one end of the cooling pipe close to the compressor.
3. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 2, characterized in that: The intake air cooler also includes a filter drier, and the filter drier is connected to the heat exchanger and the cooling pipe respectively.
4. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 3, characterized in that: The compressor is a CSW8573 compressor, the heat exchanger is a X606-250619 heat exchanger, and the filter-dryer is a DCR-0485s filter-dryer.
5. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 2, characterized in that: The falling film recovery device includes a base and a recovery pipe. The base includes a base frame and an arc-shaped bracket. Vertical rods are arranged at the four corners of the base frame. Support angle irons are installed at the connection between the vertical rods and the base frame. A "T"-shaped fixing plate is arranged on the top of the vertical rod. A rod insertion seat is inserted above the fixing plate. Both ends of the bracket are connected to the rod insertion seat through end plates.
6. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 5, characterized in that: The recovery pipe comprises a tube shell, both ends of which are provided with flange joints, the upper and lower sides of the tube shell are provided with inlets, and the bottom of the flange joints are provided with outlets; a falling film tube is provided inside the tube shell, and the falling film tube is composed of a plurality of absorption liquid unit tubes.
7. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 1, characterized in that: The inlet air cooler is connected to the falling film recovery device through a first pipeline, and the falling film recovery device is connected to the distillation tower through a second pipeline.
8. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 7, characterized in that: The top of the distillation tower is connected to the second condenser through a fourth pipeline, and the bottom is connected to the sulfur dioxide distillation tower through a third pipeline.
9. A hydrogen chloride and sulfur dioxide absorption treatment system according to claim 8, characterized in that: The top of the sulfur dioxide distillation tower is connected to the first condenser through a fifth pipeline.