Similar compatibility principle of organic waste gas treatment method
I. Thermal destruction method for waste gas treatment
Thermal destruction method is a method to directly and assist the combustion of organic gases, or use catalysts to accelerate the chemistry of organics, thereby reducing the concentration of organics. This method has a good effect on the treatment of low-concentration exhaust gases. Has been widely used. Thermal destruction is divided into two cases of direct flame combustion and catalytic combustion. When direct flame combustion is used, the heat treatment efficiency of organic matter is higher, which can basically reach 99%. Catalytic combustion is to accelerate the chemical reaction of organics under the action of a catalytic bed. It takes less time than direct combustion, but it cannot be separated from the role of catalysts. The currently used catalysts are mostly metals and metal salts. Although metal catalysts The catalytic effect is very good, and the technology is relatively mature, but it is expensive and the cost is too high. Therefore, in recent years, the development of catalysts has focused on non-precious metal catalysts, and also achieved good results. In the process of catalyzing the exhaust gas of the machine, a catalyst support is also needed, which can play a role in improving the catalytic activity and stability. In recent years, ceramic supports are mainly used, but in the future catalyst research, it should also be efficient Highly active catalysts and their supports are predominant.
Liquid absorption method for waste gas treatment
The liquid absorption method uses the similar compatibility principle of the liquid absorption liquid and the organic waste gas to achieve the purpose of treating the organic waste gas. Its absorption liquid is mostly a mixed liquid composed of liquid petroleum substances, surfactants and water. In recent years, cyclodextrin has also achieved good results as an absorption material for organic halides. At the same time, this absorption agent can be recycled and reused. , And non-toxic and pollution-free, so it can be widely used.