Catalytic oxidation filter for organic sulfur waste gas treatment

Abstract

The invention mainly discloses a catalytic oxidation filter for organic sulfur waste gas treatment. The catalytic oxidation filter comprises a catalytic oxidation filler filter bed box body, a gas inlet of the catalytic oxidation filler filter bed box body is connected with a waste gas storage tank, a spraying pipe is arranged at the top of the catalytic oxidation filler filter bed box body, the spraying pipe is connected with a centrifugal fan, the centrifugal fan is connected with a catalytic oxidant adding device through a pipeline, the catalytic oxidant adding device is respectively connected with a hydrogen peroxide adding device and a ferrous sulfate adding device through pipelines, a gas baffling baffle is arranged at a gas inlet of the catalytic oxidation filler filter bed box body, a catalytic filter material layer is arranged on one side of the gas baffling baffle in the catalytic oxidation filler filter bed box body and below the spraying pipe, and a liquid collecting box isarranged at the bottom of the catalytic filter material layer. Hydroxyl free radicals (-OH) generated by a Fenton reagent formed by hydrogen peroxide and ferrous sulfate are utilized, the oxidation potential reaches up to 2.8 ev, and the oxidation capacity is high and is only second to that of fluorine.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a catalytic oxidation filter for organic sulfur waste gas treatment. Background technique [0002] With the continuous improvement of my country's urbanization process and people's living standards, environmental pollution has become a major obstacle to improving people's quality of life. At present, industrial waste gas discharged from industries such as pharmaceutical chemical industry and petroleum refining generally contains volatile organic sulfides such as mercaptans and sulfides. These pollutants have the characteristics of low odor threshold and high toxicity, and the problem of odor pollution has been plagued The life and physical and mental health of the surrounding people, long-term living in the environment of organic sulfur odorous gas will lead to loss of olfactory function, decreased digestive function, respiratory and endocrine system disorders,...

AI Technical Summary

Problems solved by technology

At present, industrial waste gas discharged from industries such as pharmaceutical chemical industry and petroleum refining generally contains volatile organic sulfides such as mercaptans and sulfides. These pollutants have the characteristics of low odor threshold and high toxicity, and the problem of odor pollution has been plagued The life and physical and mental health of the surrounding people, long-term living in the environment of organic sulfur odorous gas will lead to loss of olfactory function, decreased digestive function, respiratory and endocrine system disorders, and poisoning of the nervous system. Therefore, it is necessary to seek an economical and effective treatment Methods and equipment for organic sulfur waste gas are imperative

The oxidation potentials of the above oxidation methods are not high, the oxidation ability is poor, and because the contact time between the exhaust gas and the oxidant is short, the effect on organic sulfides with large bond energy and difficult to be oxidized is poor.

[0007] The combustion method generally removes high-concentration organic sulfides completely, but it is not efficient for medium-low concentration organic sulfides, and the investment and operating costs are high.

[0008] The biological method mainly adopts the biofilter or the biological trickling method. Due to the poor biodegradability and high toxicity of organic sulfides, which have a killing effect on the bacteria, the biochemical treatment efficiency is extremely low, so it is not suitable for biochemical treatment.

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