Device for reducing pyridine content in purge gas

Abstract

The utility model relates to the field of gas purification, and discloses a device for reducing the content of pyridine in purge gas, which comprises a purge gas pyridine removal tank, the upper end of the purge gas pyridine removal tank is connected with an exhaust pipe, one end of the exhaust pipe far away from the purge gas pyridine removal tank is connected to the lower surface of a cooler, and the other end of the exhaust pipe is connected with the lower surface of the cooler. According to the device disclosed by the utility model, through the arrangement of the purge gas pyridine removal tank, when entering the pyridine removal tank through the purge gas inlet pipe, purge gas firstly passes through a plurality of filler layers, molecular sieves are filled among the plurality of filler layers, and micropore structures in the molecular sieves can provide a large surface area; the molecular sieve is arranged in the pore channel, so that pyridine molecules can be fixed in the pore channel through Van der Waals force, the pyridine molecules in purge gas are selectively adsorbed by utilizing the uniform pore structure of the molecular sieve, the pyridine component is gradually removed along with continuous flowing of the gas, and finally, the purified gas is released from the eduction tube.

Description

Technical Field

[0001] The utility model relates to the field of gas purification, in particular to a device for reducing the pyridine content in purge gas. Background Art

[0002] Pyridine is a colorless or pale yellow liquid with a distinctive foul odor. It is an important organic synthesis intermediate and is widely used in the pharmaceutical, pesticide, and dye industries. However, the combustion of pyridine produces harmful gases such as CO and NOx, which can affect human health and contribute to environmental issues such as air pollution and the greenhouse effect. Pyridine vapor, when mixed with air, is highly susceptible to ignition and even explosion when exposed to a fire source. Therefore, purge gas containing pyridine cannot be directly discharged into the atmosphere or burned directly; it must be removed from the purge gas.

[0003] Existing purification technologies often lack the selective adsorption capacity for specific pollutants such as pyridine, which may result in the adsorption of other useful gas components while removing pyridine, affecting the overall quality of the gas. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a device for reducing the pyridine content in the purge gas, thereby solving the safety problem.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for reducing the pyridine content in the purge gas, comprising a purge gas depyridine tank, the upper end of the purge gas depyridine tank is connected to an exhaust pipe, the end of the exhaust pipe away from the purge gas depyridine tank is connected to the lower surface of a cooler, the upper surface of the cooler is fixedly connected to a purge air inlet pipe, a plurality of packing layers are arranged inside the purge gas depyridine tank, and molecular sieves are filled between each of the packing layers.

[0006] Preferably, the lower end of the purge gas depyridine tank is fixedly connected to a derivation pipe, and one end of the derivation pipe away from the purge gas depyridine tank is connected to a fuel gas pipe.

[0007] Preferably, a connecting flange is provided at the connection position between the outlet pipe and the fuel gas pipe.

[0008] Preferably, one end of the fuel gas pipe away from the outlet pipe is connected to an incinerator, and an exhaust pipe is fixedly connected to the upper surface of the incinerator.

[0009] Preferably, a safety valve is provided at the connection position between the fuel gas pipe and the incinerator.

[0010] Preferably, a flow meter is provided in the middle of the outlet pipe.

[0011] Beneficial effects

[0012] The utility model provides a device for reducing the pyridine content in the purge gas. Compared with the prior art, it has the following beneficial effects:

[0013] 1. In the utility model, the purge gas depyridine tank is provided. When the purge gas enters the depyridine tank through the purge inlet pipe, it first passes through multiple packing layers. Molecular sieves are filled between the multiple packing layers. The microporous structure inside the molecular sieve can provide a large amount of surface area, so that pyridine molecules can be fixed in the pores by van der Waals forces. The uniform pore structure of the molecular sieve is utilized to selectively adsorb pyridine molecules in the purge gas. As the gas continues to flow through, the pyridine component is gradually removed. Finally, the purified gas is released from the outlet pipe. Through the combined action of the multiple packing layers and the molecular sieve, the removal efficiency of pyridine in the purge gas is significantly improved, thereby ensuring the purity of the output gas.

[0014] 2. In the utility model, the incinerator is provided, and the exhaust gas after the pyridine molecules are removed is introduced into the incinerator through the fuel gas pipe for combustion treatment. The exhaust gas after the pyridine molecules are removed can be recycled as fuel gas, thereby improving energy utilization efficiency and reducing the energy cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front side three-dimensional structure of a device for reducing the pyridine content in the purge gas proposed by the present invention;

[0016] Figure 2 This is a partial cross-sectional structural diagram of a device for reducing the pyridine content in the purge gas proposed by the present invention;

[0017] Figure 3 This utility model proposes a device for reducing the pyridine content in the exhaust gas Figure 2 A magnified view of center.

[0018] Legend:

[0019] 1. Purge gas depyridine tank; 2. Cooler; 3. Fuel gas pipe; 4. Incinerator; 5. Packing layer; 6. Molecular sieve; 7. Purge air inlet pipe; 8. Exhaust pipe; 9. Connecting flange; 10. Flow meter; 11. Safety valve; 12. Discharge pipe; 13. Export pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 3 , the utility model provides two technical solutions, specifically including the following embodiments:

[0022] Example 1: A device for reducing the pyridine content in the purge gas, comprising a purge gas depyridine tank 1, the tank body being made of corrosion-resistant and pressure-resistant titanium alloy material, the upper end of the purge gas depyridine tank 1 being connected to an exhaust pipe 8, the end of the exhaust pipe 8 away from the purge gas depyridine tank 1 being connected to the lower surface of the cooler 2, the upper surface of the cooler 2 being fixedly connected to a purge air inlet pipe 7, a plurality of packing layers 5 being arranged inside the purge gas depyridine tank 1, each packing layer 5 being filled with a molecular sieve 6, the molecular sieve 6 being specifically HY molecular sieve 6, having a large number of microporous structures, these microporous structures providing a large amount of surface area, fixing pyridine molecules by van der Waals forces, and only molecules of a specific shape and size (such as pyridine) can be effectively adsorbed.

[0023] During operation, when the purge gas enters the depyridine tank through the purge inlet pipe 7, it will first pass through multiple packing layers 5. Molecular sieves 6 are filled between the multiple packing layers 5. The microporous structure inside the molecular sieve 6 can provide a large surface area, so that the pyridine molecules can be fixed in the pores through van der Waals forces. The uniform pore structure of the molecular sieve 6 selectively adsorbs the pyridine molecules in the purge gas. As the gas continues to flow, the pyridine component is gradually removed. Finally, the purified gas is released from the outlet pipe 13.

[0024] Example 2: On the basis of Example 1, the lower end of the purge gas pyridine stripping tank 1 is fixedly connected with a derivation pipe 13, and the end of the derivation pipe 13 away from the purge gas pyridine stripping tank 1 is connected to the fuel gas pipe 3, and a connecting flange 9 is provided at the connection position of the derivation pipe 13 and the fuel gas pipe 3. The end of the fuel gas pipe 3 away from the derivation pipe 13 is connected to the incinerator 4, and the upper surface of the incinerator 4 is fixedly connected with a discharge pipe 12. It should be noted that the purge gas usually contains a certain amount of combustible gas, such as methane, hydrogen, etc., and the purge gas after the pyridine molecules are removed is passed into the incinerator through the fuel gas pipe 3. Combustion treatment is carried out in the furnace 4, and the exhaust gas after removing the pyridine molecules can be recycled as fuel gas, thereby improving energy utilization efficiency and reducing the company's energy costs. Pyridine is flammable and explosive. If the exhaust gas contains pyridine, there may be safety hazards during storage, transportation and use. After removing it and entering the fuel gas pipe 3, the danger of the exhaust gas can be reduced. A safety valve 11 is provided at the connection position between the fuel gas pipe 3 and the incinerator 4, and a flow meter 10 is provided in the middle of the outlet pipe 13. The flow meter 10 is used to monitor the operating status of the outlet pipe 13.

[0025] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the scope of protection of the present application.

Claims

1. A device for reducing the pyridine content in a purge gas, comprising a purge gas depyridine tank (1), characterized in that: The upper end of the purge gas depyridine tank (1) is connected to an exhaust pipe (8), one end of the exhaust pipe (8) away from the purge gas depyridine tank (1) is connected to the lower surface of a cooler (2), the upper surface of the cooler (2) is fixedly connected to a purge air inlet pipe (7), and a plurality of packing layers (5) are provided inside the purge gas depyridine tank (1), and molecular sieves (6) are filled between each of the packing layers (5).

2. A device for reducing the pyridine content in the off-gas according to claim 1, characterized in that: The lower end of the purge gas depyridine tank (1) is fixedly connected to a derivation pipe (13), and the end of the derivation pipe (13) away from the purge gas depyridine tank (1) is connected to a fuel gas pipe (3).

3. A device for reducing the pyridine content in the purge gas according to claim 2, characterized in that: A connecting flange (9) is provided at the connection position between the outlet pipe (13) and the fuel gas pipe (3).

4. A device for reducing the pyridine content in the purge gas according to claim 2, characterized in that: One end of the fuel gas pipe (3) away from the outlet pipe (13) is connected to the incinerator (4), and the upper surface of the incinerator (4) is fixedly connected to the discharge pipe (12).

5. A device for reducing the pyridine content in the purge gas according to claim 4, characterized in that: A safety valve (11) is provided at the connection position between the fuel gas pipe (3) and the incinerator (4).

6. A device for reducing the pyridine content in the purge gas according to claim 2, characterized in that: A flow meter (10) is provided in the middle of the outlet pipe (13).

Images