High-temperature oxygen-rich supernormal-pressure strengthened combustion purification device for benzene harmful substances in industrial waste gas

Abstract

The invention discloses a high-temperature oxygen-rich supernormal-pressure strengthened combustion purification device for benzene harmful substances in industrial waste gas. The high-temperature oxygen-rich supernormal-pressure strengthened combustion purification device for the benzene harmful substances in the industrial waste gas comprises a waste gas collecting and absorbing and conveying system, an even storage system, a waste gas oxygen-rich mixed conveying system and an oxygen-rich strengthened combustion system; the waste gas collecting and absorbing and conveying system comprises awaste gas absorbing and conveying device and a vacuum pump exhaust tank; the even storage system comprises an even storage tank, the even storage tank is provided with an even storage tank air outlet,and the even storage tank air outlet communicates with one end of an even storage gas delivery pipe; the waste gas absorbing and conveying device communicates with the even storage tank through a first pipeline, and the vacuum pump exhaust tank communicates with the even storage tank through a second pipeline; the waste gas oxygen-rich mixed conveying system comprises an oxygen tank and an air blower; and the oxygen-rich strengthened combustion system comprises an oxygen-rich strengthened combustion device, and the oxygen-rich strengthened combustion device comprises a combustion chamber. Thehigh-temperature oxygen-rich supernormal-pressure strengthened combustion purification device is convenient to operate, safe and reliable and easy to popularize, saves investment, and is high in purification rate; and gases containing benzene can be purified efficiently, various harmful combustible gases and combustible dust in waste gas can be further purified efficiently, and the harm of metaldust with the melting point being less than 1380 DEG C can be defused.

Description

technical field [0001] The invention relates to the technical field of environmental protection, and relates to a purification device for pollutants such as benzene-containing harmful waste gas and smoke dust, in particular to a high-temperature oxygen-enriched supernormal pressure enhanced combustion purification device for benzene-type harmful substances in industrial waste gas. Background technique [0002] In industrial production at home and abroad, all industries that use aromatic materials (that is, hydrocarbons containing benzene ring structure in the molecule), such as plastic industry, rubber industry, paint, petrochemical and other chemical industries, pharmaceutical industry, waste incineration and In the lost foam and V-method casting industries, etc., the materials with benzene ring structure will inevitably produce waste gas containing benzene (benzene, toluene, ethylbenzene, styrene, etc.) during the heating, combustion, gasification or cracking process. All ...

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Problems solved by technology

So far, there is still nothing to do at home and abroad on the pollution of benzene waste gas, CO and C smoke and dust generated during the pouring of EPS (expanded polystyrene) in lost foam casting. This problem has become the biggest problem in the environmental protection and sustainable development of lost foam casting. obstacle

As early as more than ten years ago, there were research reports on the treatment of industrial benzene waste gas abroad, such as the so-called "precious metal adsorption concentration catalytic combustion method", but it was not advanced and practical. It costs millions or even tens of millions of yuan, the operating cost is very high, there are many safety hazards in the operation process, the collected benzene and other gases are prone to leakage, the operation is complicated, and the adsorption effect is limited.

For example, diesel oil has a certain effect on the adsorption of benzene, but it has little effect on the adsorption and purification of toluene, ethylbenzene, and styrene, and it cannot absorb CO gas in the exhaust gas, and the effect of any adsorbent is weakened to disappear as it becomes saturated. Therefore, it does not have the value of popularization and application

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