VOCs gas cryogenic recovery device based on industrial waste cool

A recovery device and waste cooling technology, applied in the field of VOCs gas cryogenic recovery device, can solve the problems of incomplete recovery of VOCs gas and environmental protection of exhaust gas, etc., and achieve the effect of improving recovery rate and reducing emissions

Pending Publication Date: 2019-12-17
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology

[0006] The purpose of the present invention is to carry out cryogenic liquefaction and recovery of VOCs gas through a VOCs gas cryogenic recovery device based on industrial waste cooling, so as to solve the problems of incomplete recovery of VOCs gas and environmental protection of exhaust gas.

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  • VOCs gas cryogenic recovery device based on industrial waste cool

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so as to better understand the present invention.

[0021] The VOCs gas to be treated can be divided into two parallel streams and enter the primary cooler (1) and primary cooler (2) through the VOCs gas inlet (1-3) and (2-3) for dehydration. The cooling temperature of the cooler (2) is -20~0°C, the water flows out from the outlet of the primary cooler (1-7) and the outlet of the primary cooler (2-7), and the gas to be treated is discharged from the VOCs gas outlet after the dehydration is completed (1-5), (2-5) enter the cryocooler (3) to remove oil through the dehydration VOCs gas inlet (3-3). The dehydrated VOCs gas enters from the upper part (3-3) and flows downward, and the dehydrated VOCs gas is liquefied in the gas-liquid separation area (3-9). There are two oil discharge ports (3-7) at the bottom of the cryocooler (3) ), the liquefied VOCs flow o...

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Abstract

The invention provides a VOCs gas cryogenic recovery device based on industrial waste cool. The device mainly comprises a primary cooler 1 and a primary cooler 2 which are connected in parallel and connected in series with a cryogenic cooler, and vacuum insulation layers coat outside each component and connecting pipe. VOCs emission gas from a factory respectively flows through the shell sides ofthe primary cooler 1 and the primary cooler 2, is cooled to about-20 DEG C to remove purified water, sequentially flows through a shell pass of the cryogenic cooler and an adsorber to remove VOCs gas,then returns to a tube pass of the primary cooler 1 to precool part of VOCs exhaust gas, recovers residual cold and is discharged into the atmosphere. Low-temperature liquid nitrogen or a LNG industrial waste cold source sequentially flows through the tube pass of the cryogenic cooler and the tube pass of the primary cooler 2, VOCs gas cryogenic cooling liquefaction recovery is conducted on the VOCs exhaust gas, pre-cooling dehydration is conducted on part of factory exhaust gas, and then the VOCs exhaust gas is discharged into the atmosphere. The device can fully utilize the industrial wastecold to realize complete recovery of the VOCs, is energy-saving, environment-friendly, compact in structure and convenient to use and install, and has wide popularization and application prospects.

Description

technical field [0001] The invention relates to a VOCs gas recovery device, in particular to a VOCs gas cryogenic recovery device based on industrial waste cooling. Background technique [0002] Volatile Organic Compounds (Volatile Organic Compounds, VOCs) is a general term for a series of volatile, flammable and toxic organic compounds. It is an important cause of smog and PM2.5. , It is necessary to strengthen the recovery and treatment of VOCs gas. [0003] Common treatment technologies include: (1) Condensation technology. The effective collection of VOCs gas is achieved through condensation technology to avoid the volatilization of VOCs. However, in the process of technology application, there will still be a certain amount of VOCs gas emissions, which will affect the effectiveness and scientificity of technology application. (2) Combustion treatment. As an organic compound, VOCs gas is flammable, and VOCs gas can be treated by combustion treatment, but this method r...

Claims

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Application Information

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IPC IPC(8): B01D53/04B01D53/26
CPCB01D53/04B01D53/265B01D2257/708B01D2257/80Y02A50/20
Inventor 胡德栋宋天舒杨桑宇
Owner QINGDAO UNIV OF SCI & TECH
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