The emission of organic waste gas in chemical production is not only large, but also the organic composition is complex. At the same time, most of the gases have certain toxicity, flammability and foul odor, and even some gases will destroy the ozone layer and affect the ecological balance.So the treatment of organic waste gas in chemical industry is particularly important.
At present, the domestic organic waste gas treatment methods include adsorption, absorption, condensation, thermal decomposition, catalytic combustion and incineration.The choice of treatment method depends on the chemical properties, physical characteristics, emission, emission standard, concentration and economic value of the recovery.
The waste gas discharged in the process of chemical industry contains a large number of organic pollutants and malodorous substances, which can be treated by catalytic combustion or direct combustion.It should be noted that the intermediate products formed in the combustion process may be more harmful than the original pollutants, so it is necessary to grasp the combustion temperature and time to ensure complete combustion.Catalytic combustion method is to make the exhaust gas completely combustion at a lower temperature (200~500℃) with the help of catalyst.The direct combustion method is generally used in incinerator, but the direct combustion method consumes more dyes and is only suitable for treating waste gas with higher calorific value.
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