Desulfurization device

Abstract

The present invention provides a desulfurization device, so as to remove sulphur dioxide and soot in a coal fired flue gas. The desulfurization device comprises a laterally-disposed cylindrical housing. Ammonia water is accommodated on a lower side in housing. A drive shaft is disposed in an axial direction of the housing. Multiple filter turntables are disposed side by side on the drive shaft. A helical groove is disposed along a turning surface of each filter turntable. A filter mesh is disposed at at least one side surface of the helical groove. An outermost opening of the helical groove can be immersed below the liquid surface of the ammonia water. According to the desulfurization device provided by the invention, the filter turntables each with a helical groove structure are used, so that the contact area between the fuel gas and the ammonia water is greatly increased; and the soot removal efficiency is increased. Without the need of an additional cleaning apparatus, regular shutdowns for fouling cleaning can be further avoided, so that the desulfurization device can operate continuously and efficiently, thereby reducing the amount of consumed ammonia water and reducing costs.

Description

technical field [0001] The invention relates to a deep purification technology for coal-fired flue gas emissions in industries such as electric power, chemical industry, metallurgy, and manufacturing, and in particular to a desulfurization device for removing sulfur in coal-fired flue gas. Background technique [0002] Coal-fired flue gas emissions from electric power, chemical industry, metallurgy, and manufacturing industries have a great impact on air pollution. Among them, harmful substances such as soot, sulfur dioxide, and nitrogen oxides contained in coal-burning flue gas are one of the root causes of air pollution, acid rain, and greenhouse effect. At present, my country has carried out large-scale flue gas desulfurization projects, but the flue gas emissions still cannot meet the current standard requirements, and further treatment is still needed. [0003] Existing desulfurization technology often adopts a mechanical demister on the top of the desulfurization towe...

AI Technical Summary

Problems solved by technology

[0005] However, the desulfurization equipment used in the existing ammonia desulfurization technology still has the defects of low contact efficiency between flue gas and ammonia water or ammonia gas, and the crystallization generated by the reaction and the accumulation of dust in the flue gas affect the desulfurization effect.

The efficiency of the spraying equipment set up to avoid regular shutdowns to clean up scaling is very low, and the amount of ammonia water is large, making it difficult to maintain the continuous and efficient operation of the desulfurization equipment

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