Desulfurization mother liquor spray drying method and desulfurization mother liquor spray drying device

Abstract

The invention discloses a desulfurization mother liquor spray drying method and a desulfurization mother liquor spray drying device. The desulfurization mother liquor spray drying method comprises thefollowing steps: S1, carrying out hot air temperature constant treatment; S2, conveying desulfurization mother liquor; S3, atomizing and drying; S4, carrying out powder separation and storage; and S5, carrying out tail gas treatment, wherein the S1 is controlled by a hot air system, and the hot air system is composed of a high-temperature air pipe, a low-temperature air pipe, a mixer, a high-temperature adjusting valve, a low-temperature adjusting valve and a mixed air pipe. The invention further discloses a desulfurization mother liquor spray drying device, which comprises a desulfurizationmother liquor blending tank, a lifting water pump, an intermediate storage tank, a stirrer, a spray pump, an atomization drying tower, a mixer, a compressed air pressure reducer, a pulse dust collector, a bag-type dust collector and an induced draft fan. According to the method, COD and chlorine ions in a desulfurization mother liquor can be reduced, and stable operation of the tail gas desulfurization device is achieved; and the spray drying device is reasonable in design, simple in structure, convenient to install, low in investment and obvious in advantages.

Description

technical field [0001] The invention relates to the field of desulfurization, in particular to a method for spray-drying desulfurization mother liquor. [0002] The invention relates to the field of desulfurization, in particular to a device for spray drying desulfurization mother liquor. Background technique [0003] At present, most tail gas desulfurization devices use wet desulfurization. When the flue gas after wet desulfurization enters the ambient air, the water vapor in the flue gas is in a supersaturated state, and part of the water vapor condenses and fogs, and the phenomenon of "white smoke" appears. According to the national Environmental protection requirements, after wet desulfurization treatment of colored plumes, the cooled and condensed condensate enters the desulfurization system, and the desulfurization mother liquor is continuously cyclically concentrated, which eventually causes the cyclic concentration and enrichment of COD and chloride ions, which affec...

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Problems solved by technology

[0003] At present, most tail gas desulfurization devices use wet desulfurization. When the flue gas after wet desulfurization enters the ambient air, the water vapor in the flue gas is in a supersaturated state, and part of the water vapor condenses and fogs, and the phenomenon of "white smoke" appears. According to the national Environmental protection requirements, after wet desulfurization treatment of colored plumes, the condensed liquid after cooling and condensation enters the desulfurization system, and the desulfurization mother liquor is continuously cyclically concentrated, which eventually causes the cyclic concentration and enrichment of COD and chloride ions, which affects the desulfurization effect

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