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Device and process for recycling volatile organic gas in adsorption-desorption manner

An organic gas and desorption technology, which is used in the desorption process, industrial organic waste gas (VOCS) adsorption-desorption recovery, and adsorption of activated carbon fiber adsorption towers, which can solve secondary pollution, long desorption time, and water vapor consumption. Large and other problems, to achieve the effect of high recovery rate, avoid secondary pollution, and fast regeneration rate

Active Publication Date: 2014-04-23
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0007] Aiming at the shortcomings of large water vapor consumption, long desorption time and easy secondary pollution in the regeneration process of the existing organic waste gas activated carbon fiber adsorbent, the present invention proposes a fast, complete and environmentally friendly activated carbon fiber regeneration process. The scheme uses electric heating and vacuum technology to quickly desorb the organic molecules in the pores of the activated carbon fiber and condense them into liquid, while effectively maintaining the high adsorption capacity of the activated carbon fiber.

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  • Device and process for recycling volatile organic gas in adsorption-desorption manner
  • Device and process for recycling volatile organic gas in adsorption-desorption manner

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Embodiment 1

[0040] Refer below figure 1 with figure 2 Provide the device system and flow diagram of the process technology of the present invention, the device of the present invention includes two activated carbon fiber adsorption towers, respectively the first activated carbon fiber adsorption tower T102, the second activated carbon fiber adsorption tower T103; and vacuum pump P101, one-stage condensation E101, secondary condenser E102, tertiary condenser E103, liquid storage tank V101, washing tower T101, demister X101, the first activated carbon fiber adsorption tower T102 and the second activated carbon fiber adsorption tower T103 are equipped with activated carbon fiber adsorption column, an upper fixing frame and a lower fixing frame for fixing the activated carbon fiber adsorption column. Composed of cloth 2, the side wall of the insulating hollow tube 1 is distributed with air holes, the opening rate is 70%, and the aperture size is 5mm. The side wall of the insulating hollow t...

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Abstract

The invention discloses a device for recycling a volatile organic gas in an adsorption-desorption manner and a utilization method of the device. The device comprises activated carbon fiber adsorption towers, a vacuum pump, a condenser and a liquid storage pot, wherein an activated carbon fiber adsorption column as well as an upper fixing rack and a lower fixing rack which are used for fixing the activated carbon fiber adsorption column are arranged in each adsorption tower; the activated carbon fiber adsorption column is formed by a hollow insulating pipe which has an airtight bottom and an upper opened end and activated carbon fiber fabric which wraps the wall of the side surface of the hollow insulating pipe; air through holes are formed in the wall of the side surface of the hollow insulating pipe; the wall of the side surface of the hollow insulating pipe is completely wrapped by the activated carbon fiber fabric; two ends of the activated carbon fiber adsorption column are connected with an electrode in which a current can be conducted. According to the device, organic molecules adsorbed by a plurality of activated carbon fiber adsorption towers are recycled in a desorption condensation manner through the combination of electric-heating and vacuum technologies. According to the process of the device, the continuous adsorption-desorption recycling of the organic waste gas can be realized, so that the recycling rate of the organic waste gas is high and the activated carbon fiber can be completely regenerated.

Description

(1) Technical field [0001] The invention relates to the technical field of air pollution control, in particular to an adsorption and desorption process of an activated carbon fiber adsorption tower and its application in the adsorption-desorption recovery of industrial organic waste gas (VOCS). (2) Background technology [0002] Activated carbon fiber has the characteristics of high specific surface area and large pore volume. Compared with activated carbon and zeolite, it has obvious advantages in adsorption capacity, so it is the preferred adsorbent in the adsorption-desorption recovery process of organic waste gas. However, more than 90% of the adsorption pores of activated carbon fibers are in the range of micropores (≤2nm), and it is difficult for the adsorbed organic molecules to desorb on the surface of activated carbon fibers, which affects the regeneration and life of activated carbon fibers, and also leads to its adsorption-desorption recovery. The organic waste ga...

Claims

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Application Information

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IPC IPC(8): B01D53/04B01D5/00B01J20/34
CPCY02P70/10
Inventor 卢晗锋周瑛邹松林陈银飞楚建堂黄海凤刘华彦庞海斌方敏杰
Owner ZHEJIANG UNIV OF TECH
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