System and method for multistage desulfurization rich liquid cavitation desorption of sulfur dioxide

Abstract

The invention discloses a system and a method for multistage desulfurization rich liquid cavitation desorption of sulfur dioxide. The system for multistage desulfurization rich liquid cavitation desorption of sulfur dioxide comprises multistage cavitation desorption units, each stage of cavitation desorption unit is divided into an upper chamber and a lower chamber by a heating surface, the upperchamber is a cavitation desorption chamber, and the lower chamber is a steam heating chamber; and an exhaust port of the cavitation desorption chamber of each preceding-stage cavitation desorption unit is connected to a steam inlet of the steam heating chamber of the next-stage cavitation desorption unit, and a condensed water outlet of the steam heating chamber of each next-stage cavitation desorption unit is connected to a desorption solution inlet of the cavitation desorption chamber of the preceding-stage cavitation desorption unit. The method for multistage desulfurization rich solution cavitation desorption of sulfur dioxide involves multistage cavitation desorption units, steam generated during cavitation of cavitation desorption chamber of each preceding-stage cavitation desorptionunit is used as heating steam of the steam heating chamber of the next-stage cavitation desorption unit to perform cavitation desorption on SO2 in the stage of cavitation desorption chamber, and desorption steam heat energy of the previous stage becomes a next-stage cavitation desorption heat absorption source.

Description

technical field [0001] The invention belongs to the fields of energy and power engineering and environmental engineering, and in particular relates to a system and method for multi-stage desulfurization rich liquid cavitation desorption of sulfur dioxide. Background technique [0002] At present, the combustion of sulfur co-generated with coal produces SO 2 Air pollution is one of the factors that form acid rain and smog weather. At the same time, my country is a country that is poor in available sulfur resources. Therefore, efficient removal and recovery of SO from coal-fired flue gas 2 The advanced method has been the subject of people's research and exploration. [0003] The basic aluminum sulfate desorption desulfurization method, theoretically speaking, is a kind of removal and desorption of SO 2 High efficiency, desulfurization rich liquid desorption SO 2 The regenerated basic aluminum sulfate is recycled, and the desorption product is high-purity SO 2 It can be s...

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Problems solved by technology

[0006] In view of the above problems, the purpose of the present invention is to provide a system and method for multi-stage desulfurization rich liquid cavitation desorption of sulfur dioxide, to solve the problem of desorption of SO2 by alkaline aluminum sulfate desorption desulfurization method. 2 Problems of high heat consumption, large-scale heat transfer equipment and water vapor condensing equipment, and high investment

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