Technique for combined treatment of various foul gases in coal chemical industry

Abstract

The invention relates to a technique for combined treatment of various foul gases in the coal chemical industry and belongs to the technical field of waste gas treatment in the coal chemical industry. The treatment technique comprises the steps that (1) waste gas pretreatment is conducted, foul gases are introduced into a water-washing tower to be subjected to deoiling and dedusting, and then the foul gases enter a deamination tower for deamination treatment; (2) waste gas incineration is conducted, the gases are introduced into a combustion device, the combusted gases enter a waste gas incinerator to be completely incinerated and decomposed, and the purposes of deodorization and degassing are achieved; and (3) high-temperature smoke enters a waste heat recycling device for waste heat recycling after being treated through the waste gas incinerator, and the smoke is subjected to up-to-standard emission after desulfurization treatment. According to the treatment technique, the foul gases are completely incinerated and decomposed into components such as SO2, CO2, H2O, NO and NO2, and the purposes of deodorization and harmful gas removal are achieved. By means of the treatment technique, the purpose of treating the various foul gases simultaneously in the coal chemical industry can be achieved, and the technique for combined treatment of the various foul gases in the coal chemical industry is economical, easy to operate, safe, environmentally friendly and complete and good in waste gas treatment effect.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to waste gas treatment of coal chemical industry, in particular to a combined treatment process of multiple malodorous gases in coal chemical industry. Background technique [0002] The coal chemical industry will produce a large amount of malodorous gas during the production process, the main components of which are COS, SO 2 , NH 3 、H 2 S and HCN are characterized by foul smell, poisonous and harmful, and low calorific value. At the same time, the gas contains dust and oil. If it is directly discharged, it will cause great pollution to the surrounding ecological environment, and at the same time produce a strong sense of stench in the air. The impact of human survival has become an important source of environmental health. [0003] At present, domestic research has also been carried out in the field of deodorization technology. The treatment methods o...

AI Technical Summary

Problems solved by technology

The masking method and expansion dilution method are generally not suitable for the removal of gaseous substances; simple use of biological filtration or biological absorption can only remove a small part of the odorous gas, which cannot meet the environmental protection emission standards; using a single incineration technology, incineration The nitrogen oxides in the final flue gas will seriously exceed the standard and cannot be discharged directly, and denitrification treatment must be carried out, but the denitrification treatment process is long and costly, which will greatly increase the cost of device construction and operation

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