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Pressurized multi-stage absorption, condensation and adsorption module combined organic waste gas recovery method

A technology of organic waste gas and recovery method, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of low condensation temperature, high energy consumption, poor absorption effect at atmospheric pressure, etc., and achieve the effect of high recovery rate

Pending Publication Date: 2022-01-11
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the recovery and treatment of large-flow and high-concentration organic waste gas is mostly a single recovery method, which has problems such as poor atmospheric pressure absorption effect, extremely low condensation temperature to meet emission requirements, and high energy consumption.

Method used

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  • Pressurized multi-stage absorption, condensation and adsorption module combined organic waste gas recovery method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A large amount of crude oil gas is produced during the loading and unloading of crude oil by a railway tank car, which is easily soluble in diesel oil, and the emission is 1000 m 3 / h, the concentration is 502.62 g / m 3 , the oil and gas emission concentration after treatment is required to be less than 80 mg / m 3 . Aiming at the requirements of low discharge of VOCs with large flow rate and high concentration, which are easily soluble in absorbent, the pressurized multi-stage "absorption + adsorption" recovery method of the present invention is used to efficiently recover them. figure 1 Be explained.

[0029] (1) The technical scheme of the present invention is as follows:

[0030] Pressurized multi-stage "absorption + adsorption" recovery method: the main equipment required by this method includes flame arrester 1, pressure sensor 2, 11, temperature sensor 3, 40, ball valve 4, 43, 51, 54, air pump 5, three Through valve 12, compressor 9, gate valve 41, 42, 50, 57, 5...

Embodiment example 2

[0051] A large amount of organic waste gas was emitted during the production process of a chemical plant, mainly C 3 and above heavy components, the content of light hydrocarbons is less, and the discharge volume is 500 m3 / h, the concentration is 363.25 g / m 3 , the oil and gas emission concentration after treatment is required to be lower than 60 mg / m 3 , Aiming at the low emission requirements of VOCs with medium flow rate, high concentration and low light hydrocarbon content, the recovery method of pressurized multi-stage "condensation + adsorption" in the present invention is used to recover them efficiently. figure 1 Be explained.

[0052] (1) The technical scheme of the present invention is as follows:

[0053] Pressurized multi-stage "condensation + adsorption" recovery method: the main equipment required by this method includes flame arrester 1, pressure sensor 2, 11, temperature sensor 3, 40, ball valve 4, 43, 51, 54, air pump 5, three Through valve 12, compressor ...

Embodiment example 3

[0074] During the process of loading and unloading oil in an oil depot, a large amount of oil and gas are produced, the oil and gas components are complex, and the discharge volume is 1000 m 3 / h, the concentration is 623.49 g / m 3 , the oil and gas emission concentration after treatment is required to be less than 20 mg / m 3 . In view of the ultra-low emission requirements of VOCs with large flow, high concentration and complex components, the recovery method of pressurized multi-stage "absorption + adsorption + condensation" in the present invention is used to efficiently recover them. figure 1 Be explained.

[0075] (1) The technical scheme of the present invention is as follows:

[0076] Pressurized multi-stage "absorption + adsorption + condensation" recovery method: the main equipment required for this method includes flame arrester 1, pressure sensors 2, 11, temperature sensors 3, 40, ball valves 4, 43, 51, 54, and air pump 5 , three-way valve 12, compressor 9, gate v...

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Abstract

The invention discloses a pressurized multi-stage absorption, condensation and adsorption module combined type organic waste gas recovery method, which is characterized in that organic waste gas passes through a pretreatment module, enters an absorption / desorption module or a condensation module, and finally enters the adsorption / desorption module for up-to-standard emission. An adsorbent is desorbed and regenerated through vacuum pumping after adsorption penetration, and desorbed gas and pretreated gas are mixed and returned to the absorption / desorption module or the condensation module. According to the pressurized multi-stage absorption, condensation and adsorption module combined type organic waste gas recovery method provided by the invention, respective advantages of absorption, condensation and adsorption are fully utilized, an optimal recovery process can be selected according to engineering requirements, module combined type multifunctional recovery is realized, the application range is wide, and the goals of efficient recovery, operation cost reduction and ultralow-concentration emission are achieved.

Description

technical field [0001] The invention relates to a pressurized multi-stage "absorption, condensation, adsorption" modular combined organic waste gas recovery method, which belongs to the technical field of oil gas recovery. Background technique [0002] At present, the emission of organic waste gas has the characteristics of large emission volume, high emission concentration, complex emission components, and varying toxicity. There are four commonly used recovery methods, namely absorption method, condensation method, adsorption method and membrane separation method. Among them, the adsorption method is one of the important methods of oil and gas recovery. The adsorption and separation of oil and gas by adsorbents is used to strictly control the emission concentration. However, the adsorption process generates a large amount of heat of adsorption, which has potential safety hazards and the adsorbent cannot be efficiently recycled and recycled; the process flow of the absorpti...

Claims

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Application Information

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IPC IPC(8): B01D53/14B01D53/02B01D53/00
CPCB01D53/1406B01D53/1425B01D53/1487B01D53/02B01D53/002B01D2257/708Y02A50/20
Inventor 黄维秋王雨雨孙宪航李旭飞朱嘉慧
Owner CHANGZHOU UNIV
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