Desulfurization generally refers to the desulfurization process before combustion and flue gas emission. It is one of the important technical measures to prevent and control air pollution. Generally, there are three desulfurization methods: before combustion, during combustion and after combustion. With the development of industry and the improvement of people's living standards, the thirst for energy is increasing day by day, and sulfur dioxide in coal-fired flue gas has become the main cause of air pollution.

Reducing sulfur dioxide pollution has become an urgent task for atmospheric environment control. Many flue gas desulfurization processes have been widely used in industry, and also have important practical significance for tail gas treatment of various boilers and incinerators.

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Precautions for coal desulfurization before combustion:

For some industries that are sensitive to hydrogen sulfide in gas, we can combine the advantages of dry desulfurization and wet desulfurization and apply the two desulfurization methods together. Wet desulfurization first removes most of the hydrogen sulfide in the gas, and then dry desulfurization removes the hydrogen sulfide in the gas, so as to achieve high desulfurization purity.

This not only makes use of the advantages of on-line adjustment of wet desulfurization, but also makes use of the advantages of high desulfurization efficiency of dry desulfurization, and overcomes the problem that the desulfurization agent fails too quickly due to the excessive sulfur capacity coefficient of dry desulfurization desulfurizer.

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