Equipment and method for extracting dust in ammonium sulfate solution after flue gas desulfurization

Abstract

The invention discloses equipment and a method for extracting dust in an ammonium sulfate solution after flue gas desulfurization. The equipment comprises a mother solution inlet (1), an evaporator (2), a gas outlet (4), a gas-solid separator (5) and a dry dust outlet (7), wherein the evaporator (2) is used for atomizing and drying an ammonium sulfate mother solution; and the gas-solid separator (5) is used for separating the dust suspended in evaporated gas. Furthermore, the invention further discloses the method for dust in the ammonium sulfate solution after the flue gas desulfurization. The equipment disclosed by the invention can effectively remove the dust in the ammonium sulfate mother solution; the efficiency is high, the manufacturing and operation are simple, the secondary pollution is avoided, and the investment and maintenance costs are low; the method disclosed by the invention is shorter than a conventional process and the efficiency is high; and the aim of effectively separating dust is effectively realized and the method is easy to popularize and use.

Description

technical field [0001] The invention relates to a dust removal device and method, in particular to a device and method for extracting dust from ammonium sulfate solution after flue gas desulfurization. Background technique [0002] A large amount of flue gas will be produced in steel sintering, or power generation, gas supply and other production processes, because the flue gas contains a large amount of SO 2 If it is not treated, it will cause serious environmental pollution, so desulfurization of flue gas has become a necessary link in today's production process. At present, flue gas desulfurization methods commonly used at home and abroad can be roughly divided into three categories according to their processes: wet disposal process, wet recovery process and dry process. However, the flue gas after desulfurization contains a large amount of dust with a complex composition and a diameter of 3-12 μm, which cannot be completely removed after dust removal and other steps. T...

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Problems solved by technology

[0003] In order to overcome the defects in the prior art such as low dust discharge efficiency affecting the quality of by-products, easy to cause secondary pollution, high equipment investment and maintenance costs, the present invention provides a device for extracting dust in ammonium sulfate solution after flue gas desulfurization; in addition, the present invention The invention also provides a method for extracting dust from ammonium sulfate solution after flue gas desulfurization with short process flow and high efficiency

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