Device and method for purifying total volatile organic compounds

Abstract

The invention discloses a device and a method for purifying total volatile organic compounds (TVOCs). The device comprises a gas inlet, an active carbon adsorption apparatus, an supersonic desorption emitter, a cold combustion chamber, a gas supply port, a desorption fan and a gas discharge port, wherein the gas inlet collects a TVOC exhaust gas and inputs the TVOC exhaust gas to the active carbon adsorption apparatus, the active carbon adsorption apparatus adsorbs the TVOC exhaust gas, and a gas reaching a discharge standard is directly discharged through the gas discharge port; the supersonic desorption emitter is started after a certain degree of the adsorption to desorb the TVOCs, and inputs the TVOCs to the cold combustion chamber; and the desorbed TVOCs are conveyed to the cold combustion chamber together with supplied oxygen, the TVOCs are decomposed by the vacuum ultraviolet (VUV) rays of the cold combustion chamber and reacts with ozone and oxygen to generate H2O and CO2, and the TVOCs are discharged into the gas discharge port through the desorption fan after the VUV cold combustion to generate H2O and CO2 to discharge a purified gas.

Description

technical field [0001] The present invention relates to VUV cold combustion technology and purification system, more specifically, relates to a kind of total volatilization produced in petrochemical industry, spray paint industry, paint production and processing industry, rubber production and processing industry, printing and dyeing industry, etc. VUV cold combustion technology and purification system for toxic organic waste gas (TVOC). Background technique [0002] In the production process of existing industrial enterprises, total volatile organic compounds (TVOC) will inevitably be produced. The composition of TVOC is complex, the emission concentration varies greatly, and it is not easily soluble in water, acid or alkali. It has always been a difficult problem to control. For the treatment of TVOC, there is no general technology applied yet. The efficiency of water spray or acid-base absorption method is extremely low, which is far from meeting the purification require...

AI Technical Summary

Problems solved by technology

[0002] In the production process of existing industrial enterprises, total volatile organic compounds (TVOC) will inevitably be produced. The composition of TVOC is complex, the emission concentration varies greatly, and it is not easily soluble in water, acid or alkali. It has always been a difficult problem in governance.

For the treatment of TVOC, there is no general technology applied yet. The efficiency of water spray or acid-base absorption method is extremely low, which is far from meeting the purification requirements; activated carbon adsorption has a certain purification efficiency, and activated carbon needs to be replaced after saturation. It can be saturated in a week, and its replacement cost is high, and the continuity of purification is poor; while catalytic combustion, regenerative combustion and direct combustion can purify more thoroughly, but their cost is high, operation and maintenance costs are extremely high, and control is difficult High, with a greater potential safety hazard; plasma technology works well for low-concentration and low-molecular-weight TVOCs, but for high-concentration TVOCs, especially when there are flammable components, there is a greater risk of explosion and low safety, making it difficult to popularize and apply

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