Treatment process of phenolic waste ga

Abstract

The invention discloses a treatment process of phenolic waste gas. The treatment process comprises the following concrete steps: condensation recovery; alkali liquor absorption; gas-water separation;in-situ adsorption; pulse decomposition oxidation; water washing treatment; and fan discharging. The treatment process disclosed by the invention carries out multi-stage treatment directed at the characteristics of gas sources, is high in process stability, good in treatment effect and convenient for management. Compared with traditional RTO catalytic combustion, the treatment process has the following advantages: operation cost is effectively reduced; secondary pollution cannot be generated; later-period operation cost is reduced; and labor intensity is reduced.

Description

technical field [0001] The invention relates to a treatment process, in particular to a treatment process for phenol waste gas. Background technique [0002] During the production process of the coking company, a lot of polluting gases will be produced, if not dealt with in time, it will cause serious harm to the environment. For some companies that do not have the ability to treat waste gas, they usually store the polluted waste gas in compressed tanks, and then send it to the waste gas treatment company for centralized treatment. Taking the phenolic waste gas produced in the coking production process as an example, it is one of the most important polluting waste gases in the coking production, and usually includes heavy phenols, light phenols, mixed phenols, etc. At present, RTO catalytic combustion technology is most commonly used in the treatment of exhaust gas, that is, the exhaust gas is decomposed into CO by anaerobic combustion at a lower temperature with the help o...

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Problems solved by technology

At present, RTO catalytic combustion technology is most commonly used in the treatment of exhaust gas, that is, the exhaust gas is decomposed into CO by anaerobic combustion at a lower temperature with the help of a catalyst. 2 and H 2 O; However, this treatment method needs to use a large amount of catalyst, resulting in high operating costs, and the catalyst is unstable, and the treatment effect is unstable, and the catalyst needs to be replaced in three to five years, which further increases the operating cost; at the same time, RTO After catalytic combustion treatment, the content of nitrogen oxides in the gas is easy to exceed the standard, which not only easily causes secondary pollution, but also needs to deal with the excessive nitrogen oxides, resulting in increased workload

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