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Device and process for recovering volatile organic gas

A volatile organic and recovery device technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of air environmental quality degradation, waste of resources, and potential safety hazards, and reduce the accumulation of heavy hydrocarbons , Improving device efficiency and improving safety

Active Publication Date: 2015-07-29
李振华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Volatile organic gases discharged into the atmosphere as industrial waste gas will lead to a decline in the quality of the atmospheric environment and bring harm to human health
Among them, organic substances will produce a large amount of volatile organic gases in the process of processing, application, storage and transportation. These gaseous organic substances are generally flammable and toxic to a certain extent, which will not only cause waste of resources and environmental pollution, but also pose potential safety hazards.

Method used

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  • Device and process for recovering volatile organic gas

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Effect test

Embodiment 1

[0030] figure 1 It is a schematic diagram of the volatile organic gas recovery device of the present invention. The device of the present invention includes an adsorption tower A2, an adsorption tower B3, a vacuum pump 4, a condensing unit 5, a recovery tank 6, a recycling gas tank 8, a nitrogen automatic pressure stabilizing device 9, an oxygen content analyzer 10, and a heat exchanger 11. Wherein, the volatile organic gas inlet pipe 1 is connected to the bottom of the adsorption tower A 2 and the adsorption tower B 3 respectively through two branch pipelines, and the inlet valves 13 and 14 are respectively installed on the two branch pipelines; the adsorption tower A 2 and the top of adsorption tower B 3 are respectively provided with exhaust valves 17, 18; one end of vacuum pump 4 is connected to the bottom of adsorption tower A 2 and adsorption tower B 3 respectively through two branch pipelines, and the two branch pipelines are equipped with evacuation valves respectively...

Embodiment 2

[0033] The device described in Example 1 is used to recover the oily waste gas produced during the gasoline transfer process, and activated carbon is used as the adsorbent. The specific process is as follows: the oily waste gas first enters the adsorption tower A2 through the intake pipe 1, wherein the gaseous oily waste gas is absorbed. The adsorbent in the tower is adsorbed and intercepted, and the clean tail gas is discharged into the atmosphere through the purified gas exhaust pipe 12; when the adsorption of the adsorption tower A 2 is close to saturation, it switches to the desorption regeneration program; and the intake valve 14 and exhaust valve of the adsorption tower B 3 are opened 18. Close the evacuation valve 16 and the flushing valve 20 of the adsorption tower B3, so that the adsorption tower B3 enters the adsorption procedure; after the desorption regeneration procedure of the adsorption tower A2 ends, the adsorption procedure is switched on, and the adsorption tow...

Embodiment 3

[0042] Adopt the device described in embodiment 1 to reclaim dimethyl carbonate volatile gas, adopt active carbon+molecular sieve to be adsorbent, concrete technological process is: first oil gas enters adsorption tower A 2 by inlet pipe 1, wherein gaseous dimethyl carbonate Absorbed and intercepted by the adsorbent in the tower, the clean tail gas is discharged into the atmosphere through the purified gas exhaust pipe 12; when the adsorption of the adsorption tower A 2 is close to saturation, it switches to the desorption regeneration program; and the intake valve 14 and the exhaust gas of the adsorption tower B 3 are opened. Valve 18 closes the evacuation valve 16 and flushing valve 20 of adsorption tower B, so that adsorption tower B 3 enters the adsorption program; after the desorption regeneration program of adsorption tower A 2 ends, it cuts into the adsorption program, and adsorption tower B 3 enters the desorption regeneration program. Switching in turns, wherein, the a...

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Abstract

The invention provides a device and a process for recovering volatile organic gas. The device comprises an adsorption tower A, an adsorption tower B, a vacuum pump, a condensing unit, a recovery tank, a recycling and regeneration tank, an automatic nitrogen pressurizer, an oxygen content analyzer and a heat exchanger. When the device is adopted to recover the volatile organic gas, the adsorption tower A and the adsorption tower B are switched in turn for adsorption and desorption, and circular washing gas is provided by the recycling and regeneration tank in the desorption and regeneration process. Thorough desorption and regeneration of an adsorbent is facilitated by the aid of the device, the adsorption capability of the adsorbent and the device efficiency are improved, and the nitrogen use amount is reduced.

Description

technical field [0001] The invention belongs to the field of recovery of volatile organic gases, in particular to a recovery device and process of volatile organic gases. Background technique [0002] Volatile organic gases discharged into the atmosphere as industrial waste gas will lead to a decline in the quality of the atmospheric environment and bring harm to human health. Among them, organic substances will produce a large amount of volatile organic gases during processing, application, storage and transportation. These gaseous organic substances are generally flammable and toxic to a certain extent, which will not only cause resource waste and environmental pollution, but also pose safety hazards. Therefore, technologies capable of safely and effectively recovering and treating volatile organic gases are required. Contents of the invention [0003] The purpose of the present invention is to provide a recovery device and process for volatile organic gases, which can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02
Inventor 李振华
Owner 李振华
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