Organic waste gas adsorption-desorption recycling technology and device

A technology of organic waste gas and recovery device, which is applied in gas treatment, membrane technology, and separation of dispersed particles, etc. It can solve the problems of low condensation temperature, inability to discharge directly, and lower utilization rate, so as to reduce investment and operating costs and reduce energy loss , the effect of reducing requirements

Inactive Publication Date: 2017-11-24
李国峰
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Problems solved by technology

[0003] At present, among the methods of recovering organic solvents by adsorption-desorption, the most widely used method is still steam desorption, which desorbs organic waste gas with water vapor, and then turns the organic waste gas into liquid by cooling to realize the process of recycling. This method has the following problems: (1) During desorption, a large amount of water vapor condenses in the adsorption layer, which cannot be completely dried, which affects the adsorption performance and reduces the utilization rate; (2) When the organic waste gas contains easily hydrolyzed substances or halogens When substituting hydrocarbons and other substances, under the action of high-temperature water vapor, it will cause great corrosion to the equipment; (3) Due to the high water content of the mixed liqui

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Embodiment 1

[0028] Embodiment 1: with figure 1 The organic waste gas adsorption-desorption process shown further illustrates the present invention.

[0029] An organic waste gas adsorption-desorption process and device with two adsorbers for primary adsorption, including an adsorption system, a desorption system and a recovery system.

[0030] The adsorption system includes adsorber 1, main fan 2, adsorption valves A1, A2, A3, A4, exhaust gas pipeline and exhaust gas pipeline; the desorption system includes adsorber 1A, 1B, circulation fan 3, heater 4, cooler 5 , desorption valves B1, B2, B3, B4, B5, B6, B7, B8, B9, nitrogen valve 11, circulation pipeline and nitrogen pipeline; recovery system includes vacuum pump 7, compressor 8, primary condenser 6, Secondary condenser 9, recovery valves C1, C2, C3, C4, C5, pressure reducing valve 10, desorption gas pipeline and recovery pipeline.

[0031] The exhaust gas pipeline communicates with the exhaust gas inlets of the adsorbers 1A and 1B, an...

Embodiment 2

[0046] Embodiment 2: with figure 2 The organic waste gas adsorption-desorption process shown further illustrates the present invention.

[0047] The organic waste gas adsorption-desorption process and device including three adsorbers for secondary adsorption, the process steps are as follows.

[0048] The exhaust gas enters the adsorber 1A from the main fan 2 through the adsorption valve A4. After the organic matter in it is partially adsorbed, the gas enters the adsorber 1B from the exhaust gas outlet through the adsorption valves A2 and A7. It is discharged through the adsorption valve A5. When the adsorber 1A is saturated, the adsorption valves A2, A4, A5, A7 are closed, and the adsorption valves A6, A8, A9, A11 are opened at the same time, so that the exhaust gas enters the adsorber 1B, 1C for adsorption and purification.

[0049] Open the desorption valve B2, the recovery valve C1, and turn on the vacuum pump 7 to evacuate the adsorber 1A, and open the recovery valve C...

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Abstract

The invention relates to an organic waste gas adsorption-desorption recycling technology and device, and belongs to the field of organic waste gas treatment. The organic waste gas adsorption-desorption recycling technology is characterized in that nitrogen is used as a medium, an organic matter is recycled via vacuum circulating adsorption and compression condensing, then the exhaust of organic waste gas can reach standards, and the secondary pollution is avoided because of recycling of the organic matter; by adopting vacuum oxygen suction and circular heating and cooling adsorbers, the usage amount of nitrogen is greatly reduced, and a whole desorption cycle is shortened; by adopting compression condensing to recycle the organic matter, the condensing temperature is increased, the requirement on a condensing system is decreased, and the energy consumption in the running of the low-temperature condensing system is decreased. The organic waste gas adsorption-desorption recycling technology has the characteristics that the applicability is wide, the investment is saved, the energy consumption is low, the quality of a recycled product is good, and the secondary pollution is avoided; the investment running cost of an enterprise is greatly reduced, and the double earning of social benefits and economic benefits is realized.

Description

technical field [0001] The invention relates to the field of organic waste gas treatment, in particular to an organic waste gas adsorption-desorption recovery process and device. Background technique [0002] VOCs are a class of volatile organic compounds with a boiling point of 50°C to 260°C and a saturated vapor pressure of more than 133.33Pa at room temperature, which are very harmful to human health and the ecological environment. Effective recycling and treatment of this kind of organic waste gas can not only avoid environmental pollution, but also turn waste into treasure, reduce the investment cost of enterprises, and achieve a win-win situation of social and economic benefits. [0003] At present, among the methods of recovering organic solvents by adsorption-desorption, the most widely used method is still steam desorption, which desorbs organic waste gas with water vapor, and then turns the organic waste gas into liquid by cooling to realize the process of recyclin...

Claims

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Application Information

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IPC IPC(8): B01D53/04
CPCB01D53/0407B01D2253/102B01D2253/106B01D2253/202B01D2257/708B01D2259/40086B01D2259/40088
Inventor 李国峰穆仕祥
Owner 李国峰
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