Organic film-based device for efficiently absorbing and concentrating organic waste gas

Abstract

The utility model belongs to the technical field of waste gas absorption devices, and particularly relates to an organic membrane-based device for efficiently absorbing and concentrating organic waste gas. The device for efficiently absorbing and concentrating the organic waste gas by the organic film base comprises a compressor, an absorbing film base device and a desorbing film base device, the compressor is connected with the absorbing film base device, the absorbing film base device is connected with a liquid storage tank, the liquid storage tank is connected with the desorbing film base device, the desorbing film base device is connected with an absorbing liquid condenser, and the absorbing liquid condenser is connected with the absorbing liquid condenser. The absorption liquid condenser is connected with the absorption film base device; the membrane base desorption device is connected with the condenser, and the condenser is connected with the solvent storage tank. According to the device for efficiently absorbing and concentrating the organic waste gas through the organic film base, the organic waste gas is efficiently treated and recycled through the arrangement of the organic film base absorption device and the desorption film base device.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas absorption devices, and in particular relates to an organic membrane-based high-efficiency absorption and concentration device for organic waste gas. Background Art

[0002] VOCs refer to volatile organic compounds with a boiling point of 50℃~260℃ and a saturated vapor pressure of more than 133.3Pa at room temperature. They are mainly pollutants emitted during the production process of industries such as coating, printing, home appliances, wire and motor manufacturing, insulation materials, and paint making. The purification of VOCs waste gas has attracted more and more attention. The composition and concentration of VOCs waste gas emissions vary with the production industry and industrial conditions. Therefore, the selection of its treatment technology depends on factors such as the nature, concentration, purification requirements and economy of organic pollutants in various industries.

[0003] Conventional combustion processes include RTO, RTO, TO and other equipment, which mostly use natural gas or coal gas for combustion, or use electric heating to heat the exhaust gas. These heating methods have secondary pollution and high energy consumption.

[0004] CN106178874A discloses a zero-emission treatment process for water-soluble VOCs, including the steps of biochemical contact oxidation, Fenton oxidation, gas membrane separation and ozone activated carbon reaction, thereby achieving zero emission of water-soluble VOCs. It only absorbs VOCs that are soluble in water and is difficult to use to treat organic waste gases that are insoluble in water. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects existing in the prior art, and to provide an organic membrane-based efficient absorption and concentration device for organic waste gas, which realizes efficient treatment and recovery of organic waste gas through the arrangement of an organic membrane-based absorption device and a desorption membrane-based device.

[0006] The utility model discloses an organic membrane-based high-efficiency absorption and concentration device for organic waste gas, comprising a compressor, an absorption membrane-based device and a desorption membrane-based device. The air outlet of the compressor is connected to the air inlet of the absorption membrane-based device, the liquid outlet of the absorption membrane-based device is connected to the liquid inlet of a liquid storage tank, the liquid outlet of the liquid storage tank is connected to the liquid inlet of the desorption membrane-based device, the liquid outlet of the desorption membrane-based device is connected to the hot side inlet of an absorption liquid condenser, and the hot side outlet of the absorption liquid condenser is connected to the liquid inlet of the absorption membrane-based device; the air outlet of the desorption membrane-based device is connected to the hot side inlet of a condenser, and the hot side outlet of the condenser is connected to the liquid inlet of a solvent storage tank.

[0007] Preferably, the air inlet of the compressor is connected to an exhaust gas inlet pipe.

[0008] Preferably, the liquid outlet of the solvent storage tank is connected to the exhaust gas inlet pipe.

[0009] Preferably, the absorption membrane-based device is provided with an exhaust pipe.

[0010] Preferably, the liquid outlet of the liquid storage tank is connected to the inlet of the delivery pump, and the outlet of the delivery pump is connected to the liquid inlet of the desorption membrane-based device.

[0011] Preferably, the gas outlet of the desorption membrane-based device is connected to the gas inlet of a vacuum pump, and the gas outlet of the vacuum pump is connected to the hot side inlet of the condenser.

[0012] The organic membrane-based efficient absorption and concentration device for organic waste gas described in the utility model, when working, the organic waste gas enters the compressor through the waste gas intake pipe for pressurization, and enters the absorption membrane-based device. Under the action of the organic membrane, the organic components in the waste gas enter the absorption solvent, and the waste gas is purified through the exhaust pipe to meet the emission standards. The absorbent enters the liquid storage tank for buffer storage, and then the absorbent is sent to the desorption membrane-based device through the delivery pump. Under the negative pressure generated by the vacuum pump, the organic matter in the absorbent is separated, and enters the condenser through the vacuum pump, and the gaseous organic matter is condensed and liquefied into liquid, which is stored in the solvent storage tank. The organic components that are not liquefied enter the waste gas intake pipe at the front end of the compressor for cyclic absorption. The absorption liquid desorbed in the desorption membrane-based device is condensed by the absorption liquid condenser and enters the absorption membrane-based device to absorb organic matter.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses an organic membrane-based high-efficiency absorption and concentration device for organic waste gas, which can efficiently concentrate organic components, condense and recover organic solvents, reduce the concentration of organic components discharged into the atmosphere, adopt pressure swing adsorption to improve the adsorption efficiency of organic matter, adopt vacuum pump for vacuum desorption to improve the desorption efficiency of adsorption materials, and combine with a condenser to condense and recover the desorbed organic matter. The device has the advantages of high absorption efficiency, high energy consumption and strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the organic membrane-based high-efficiency absorption and concentration device for organic waste gas of the utility model.

[0016] In the figure: 1. compressor; 2. absorption membrane base device; 3. liquid storage tank; 4. delivery pump; 5. desorption membrane base device; 6. vacuum pump; 7. condenser; 8. solvent storage tank; 9. absorption liquid condenser; 10. exhaust gas inlet pipe; 11. exhaust pipe. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with specific embodiments.

[0018] The absorption membrane-based device described in the utility model is an absorption device that uses an organic membrane to treat waste gas. It is a commercially available product, so its internal structure is not discussed here. The desorption membrane-based device described is a desorption device for organic waste gas that uses a desorption function. It is a commercially available product, so its internal structure is not discussed here.

[0019] like Figure 1 As shown, the organic membrane-based efficient absorption and concentration device for organic waste gas described in the utility model comprises a compressor 1, an absorption membrane-based device 2, and a desorption membrane-based device 5. The air outlet of the compressor 1 is connected to the air inlet of the absorption membrane-based device 2, the liquid outlet of the absorption membrane-based device 2 is connected to the liquid inlet of the liquid storage tank 3, the liquid outlet of the liquid storage tank 3 is connected to the liquid inlet of the desorption membrane-based device 5, the liquid outlet of the desorption membrane-based device 5 is connected to the hot side inlet of the absorption liquid condenser 9, and the hot side outlet of the absorption liquid condenser 9 is connected to the liquid inlet of the absorption membrane-based device 2; the air outlet of the desorption membrane-based device 5 is connected to the hot side inlet of the condenser 7, and the hot side outlet of the condenser 7 is connected to the liquid inlet of the solvent storage tank 8.

[0020] The air inlet of the compressor 1 is connected to an exhaust gas intake pipe 10 .

[0021] The liquid outlet of the solvent storage tank 8 is connected to the exhaust gas inlet pipe 10 .

[0022] The absorption membrane base device 2 is provided with an exhaust pipe 11 .

[0023] The liquid outlet of the liquid storage tank 3 is connected to the inlet of the delivery pump 4 , and the outlet of the delivery pump 4 is connected to the liquid inlet of the desorption membrane-based device 5 .

[0024] The gas outlet of the desorption membrane base device 5 is connected to the gas inlet of the vacuum pump 6 , and the gas outlet of the vacuum pump 6 is connected to the hot side inlet of the condenser 7 .

[0025] The organic membrane-based efficient absorption and concentration device for organic waste gas described in the utility model, when working, the organic waste gas enters the compressor 1 through the waste gas inlet pipe 10 for pressurization, and enters the absorption membrane-based device 2. Under the action of the organic membrane, the organic components in the waste gas enter the absorption solvent, and the waste gas is purified through the exhaust pipe 11 to meet the emission standards. The absorbent enters the liquid storage tank 3 for buffer storage, and then the absorbent is sent to the desorption membrane-based device 5 through the delivery pump 4. Under the negative pressure generated by the vacuum pump 6, the organic matter in the absorbent is separated, and enters the condenser 7 through the vacuum pump 6, and the gaseous organic matter is condensed and liquefied into liquid, and stored in the solvent storage tank 8. The organic components that are not liquefied enter the waste gas inlet pipe 10 at the front end of the compressor 1 for cyclic absorption. The absorption liquid desorbed in the desorption membrane-based device 5 is condensed by the absorption liquid condenser 9 and enters the absorption membrane-based device 2 to absorb the organic matter.

[0026] The utility model organic membrane-based high-efficiency absorption and concentration device for organic waste gas can be widely used in power plants, chemical industry, cement, steel, coking, metallurgy and other industries.

[0027] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. An organic membrane-based high-efficiency absorption and concentration device for organic waste gas, characterized in that: The invention comprises a compressor (1), an absorption membrane-based device (2), and a desorption membrane-based device (5), wherein the air outlet of the compressor (1) is connected to the air inlet of the absorption membrane-based device (2), the liquid outlet of the absorption membrane-based device (2) is connected to the liquid inlet of a liquid storage tank (3), the liquid outlet of the liquid storage tank (3) is connected to the liquid inlet of the desorption membrane-based device (5), the liquid outlet of the desorption membrane-based device (5) is connected to the hot side inlet of an absorption liquid condenser (9), and the hot side outlet of the absorption liquid condenser (9) is connected to the liquid inlet of the absorption membrane-based device (2); the air outlet of the desorption membrane-based device (5) is connected to the hot side inlet of a condenser (7), and the hot side outlet of the condenser (7) is connected to the liquid inlet of a solvent storage tank (8).

2. The organic membrane-based high-efficiency absorption and concentration device for organic waste gas according to claim 1 is characterized in that: The air inlet of the compressor (1) is connected to an exhaust gas inlet pipe (10).

3. The organic membrane-based high-efficiency absorption and concentration device for organic waste gas according to claim 2 is characterized in that: The liquid outlet of the solvent storage tank (8) is connected to the waste gas inlet pipe (10).

4. The organic membrane-based high-efficiency absorption and concentration device for organic waste gas according to claim 1 is characterized in that: The absorption membrane-based device (2) is provided with an exhaust pipe (11).

5. The organic membrane-based high-efficiency absorption and concentration device for organic waste gas according to claim 1 is characterized in that: The liquid outlet of the liquid storage tank (3) is connected to the inlet of the delivery pump (4), and the outlet of the delivery pump (4) is connected to the liquid inlet of the desorption membrane base device (5).

6. The organic membrane-based high-efficiency absorption and concentration device for organic waste gas according to claim 1 is characterized in that: The gas outlet of the desorption membrane-based device (5) is connected to the gas inlet of the vacuum pump (6), and the gas outlet of the vacuum pump (6) is connected to the hot side inlet of the condenser (7).

Images