New process for fume desulfurization

Abstract

A process for desulfurizing fume features that a mixture of seawater and salt mud is used as desulfurizing liquid, which is then pumped into the desulfurizing tower, where it reacts on fume, and the resultant ash sludging water is directly pumped to an ash field.

Description

technical field [0001] The invention relates to a desulfurization process for coal-fired flue gas. Background technique [0002] When coal is burned, a large amount of SO is produced 2 , SO 2 has become a major air pollutant. At present, the method of controlling coal-fired flue gas pollution is mainly to use lime liquor to react with flue gas to achieve the purpose of desulfurization and dust removal. However, this method uses a large amount of high-quality lime, and the lime liquid prepared with lime is highly corrosive, so the investment in fixed facilities is large, the operating cost is high, and dust pollution is easily generated. On the other hand, the production of basic chemical products such as soda ash requires a lot of energy, which usually comes from self-contained thermal power plants. Coal-fired flue gas desulfurization and dust removal are also an important task for environmental protection in these self-contained thermal power plants. The soda ash factor...

AI Technical Summary

Problems solved by technology

However, due to the use of a large amount of high-quality lime in this method, and the lime solution prepared with lime is highly corrosive, the investment in fixed facilities is large, the operating cost is high, and dust pollution is likely to occur.

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