Treatment method of chlorine-containing organic waste gas

Abstract

The invention relates to a treatment method of chlorine-containing organic waste gas. According to the treatment method, the chlorine-containing organic waste gas is subjected to catalytic oxidation through a reaction catalyst fixed bed filled in the internal space of a catalytic combustion chamber and then enters a thermal combustion chamber to further oxidize incompletely oxidized substances, and finally the chlorine-containing organic waste gas is mainly converted into carbon dioxide, water and hydrogen chloride; and a pipeline reactor and a bag-type dust collector are purification devices for combustion by-products, calcium hydroxide is sprayed into the pipeline reactor to remove hydrogen chloride generated in the combustion process of the chlorine-containing organic waste gas, activated carbon is sprayed into the pipeline reactor to eliminate by-product dioxin generated in the combustion process, CaCl2 and the activated carbon adsorbed with the dioxin are further removed by the bag-type dust collector, and finally, clean flue gas enters a chimney to be emptied. According to the treatment method, high-efficiency degradation of the chlorine-containing organic waste gas and high-efficiency removal of byproducts can be realized, corrosion of hydrogen chloride generated in the chlorination process to a pipeline is overcome, generation of dioxin is reduced, the removal efficiency of Cl-VOCs is improved, and the reaction energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of organic waste gas treatment, in particular to a method for efficiently treating chlorine-containing organic waste gas. Background technique [0002] Volatile organic compounds (VOCs) refer to organic compounds with a saturated vapor pressure greater than 70Pa at normal temperature and a boiling point below 260°C at normal pressure, or all organic compounds with a vapor pressure greater than or equal to 10Pa at 20°C and are volatile. [0003] At present, the treatment methods of Cl-VOCs are mainly divided into destruction technology and recovery technology. Destruction technologies include combustion, biological treatment, photocatalytic oxidation, and low-temperature plasma, and recovery technologies include adsorption, absorption, condensation, and membrane separation. many. Due to its low energy consumption, strong processing capacity, and no secondary pollution, catalytic combustion technology is a p...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the existing chlorine-containing organic waste gas treatment process generally has problems such as high energy consumption, low efficiency, and difficulty in eliminating by-products. For example, dilute hydrochloric acid is sprayed through the cooling water ring to cool the flue gas and absorb HCl in the flue gas. Although it can Effectively reduce the generation of dioxins, meeting the requirements of environmental protection and energy saving

However, this method will generate a large amount of absorption waste liquid and requires subsequent oxidation stabilization treatment. At the same time, the discharged high-temperature flue gas contains a large amount of hydrogen chloride acid gas, which will cause serious chloride ion corrosion to the system valve pipes, thereby affecting the long-term stable operation of the treatment system.

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