Flue gas dry desulfurization device

Abstract

The invention discloses a flue gas dry desulfurization device. The device is a flue gas desulfurization device. According to the device, water spray amount in the desulfurization device is reduced, such that problems such as wall adhesion and scaling are avoided. The device comprises a flue gas inlet pipe, a desulfurization reactor, a settling chamber, a deduster, and a desulfurization agent recycling device. The flue gas inlet pipe communicates with the inlet of the desulfurization reactor. The outlet of the desulfurization reactor communicates with the settling chamber. A first flue gas outlet and a first desulfurization agent outlet allowing large-particle desulfurization agent to flow out are provided on the settling chamber. The first flue gas outlet communicates with the inlet of the deduster. A second flue gas outlet communicating with the external atmosphere and a second desulfurization agent outlet outputting desulphurization circulation ash are provided on the deduster. The first desulfurization agent outlet and the second desulfurization agent outlet are connected to the desulfurization agent recycling device. The desulfurization agent recycling device delivers recovered desulfurization agent to the inlet of the desulfurization reactor, such that the desulfurization agent can be used in flue gas desulfurization.

Description

technical field [0001] The invention relates to flue gas desulfurization equipment, in particular to a flue gas dry desulfurization device. Background technique [0002] Circulating fluidized bed flue gas desulfurization technology, through the continuous circulation of the desulfurizer in the reactor, fully mixes and contacts with SO2, HF and other gases in the flue gas and undergoes a chemical reaction, which greatly improves the utilization efficiency of the desulfurizer. With the continuous advancement of technology and continuous accumulation of experience, the desulfurization efficiency of this method is close to that of wet method. However, in engineering practice, due to excessive water spraying in the desulfurization reactor, it is easy to cause wall sticking and fouling, and the bottom of the desulfurization reactor is prone to the problem of ash falling off and causing partial flue blockage. Contents of the invention [0003] The purpose of the present inventio...

AI Technical Summary

Problems solved by technology

However, in engineering practice, due to excessive water spraying in the desulfurization reactor, it is easy to cause wall sticking and scaling, and the bottom of the desulfurization reactor is prone to the problem of ash falling off and causing partial flue blockage.

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