A multi-component VOCs adsorption condensation recovery device

Abstract

The invention discloses a multi-component VOCs adsorbing, condensing and recycling device, and relates to separation with physical methods. The multi-component VOCs adsorbing, condensing and recycling device can adsorb multi-component VOCs gas industrially discharged, and reutilize the saturated adsorbent in an in-site removal manner, and separate and recycle multi-component VOCs by hierarchical condensation process. For VOCs gas, the structure uses the pretreatment processes of dehumidifying and precooling, adsorption and purification of the device are optimized. Nitrogen gas is used as blowoff gas, removal effect is enhanced, and service life of the adsorbent is prolonged. In addition, the nitrogen gas can be recycled in the process, and operating cost of the device is reduced. Meanwhile, waste heat generated by a refrigerator unit during condensation of VOCs, and energy consumption of the device is reduced. The device in the above structure can be widely applied to the industries of petrochemical industry, chemical industry, spraying, pharmaceuticals, packaging printing and the like, and has the advantages of high VOCs treatment efficiency, and low operating cost and energy consumption.

Description

technical field [0001] The invention relates to a separation device using a physical method, in particular to a multi-component VOCs adsorption condensation recovery device. Background technique [0002] Volatile organic compounds (VOCs) emitted by industrial enterprises can cause great harm to human health and the atmospheric environment. It can not only directly damage the human respiratory and digestive system, but also have a photochemical reaction with NOx in the atmosphere, causing deep-seated environmental problems. [0003] At present, VOCs treatment technologies include two categories: destruction and recycling. The destruction technology is to directly decompose VOCs into carbon dioxide and water through biochemical reactions, mainly including biological treatment, catalytic combustion, ozone oxidation, photocatalysis, etc. These methods usually have high operating costs and high energy consumption. The recycling technology is to capture, concentrate, collect and...

AI Technical Summary

Problems solved by technology

However, this process has the following problems: (1) The adsorption and condensation recovery processes are separated, requiring manual replacement of the adsorbent and responsible for the transportation of the saturated adsorbent; (2) The adsorption is carried out at room temperature, and the adsorption capacity of the adsorbent is small, and the use efficiency is low; ( 3) The adsorbent that is regenerated by blowing off with steam needs to be dried before it can be used, and the service life is greatly reduced; while the VOCs blown out by hot air may be at the limit of explosion, posing a safety hazard. (4) This technology can only be recycled Single-component VOCs cannot realize the separation and collection of multi-component VOCs; (5) The waste heat generated in the condensation process is not effectively utilized, and the energy efficiency is low

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