Ammonia-process flue gas desulfurization hydraulic stirring system and operation method thereof

Abstract

The invention relates to an ammonia-process flue gas desulfurization hydraulic stirring system and an operation method thereof. A sleeve, a hydraulic stirring and conveying device, a connecting pipeline and a disturbance distribution pipe network are connected in sequence. A pressure transmitter is arranged on the connecting pipeline. One end of the sleeve is connected with the bottom of a desulfurization column concentration section, the desulfurization column concentration section is made of carbon steel and is subjected to glass flake preservative treatment for storing ammonium sulfate slurry, and crystallization of ammonium sulfate is carried out in the desulfurization column concentration section. The disturbance distribution pipe network is arranged in the desulfurization column concentration section; and a plurality of disturbance nozzles are mounted on the disturbance distribution pipe network in a posture that the nozzles face downwards. The hydraulic stirring and conveying device conveys slurry at the bottom of the desulfurization column concentration section upwards to the disturbance distribution pipe network through the sleeve and the connecting pipeline and then sprays the slurry downwards through the disturbance nozzles. The stirring and uniform distribution of the ammonium sulfate slurry in the desulfurization column concentration section can be simultaneously realized, the engineering investment cost is low, the operation is simple, and the crystallization of the ammonium sulfate slurry is facilitated.

Description

technical field [0001] The invention relates to the technical field of wet flue gas desulfurization, in particular to a hydraulic stirring system for ammonia flue gas desulfurization and an operating method thereof. Background technique [0002] Ammonia flue gas desulfurization is a wet flue gas desulfurization technology that uses alkaline substances as a removal agent to absorb sulfur dioxide in flue gas and recover by-products (such as ammonium sulfate). The ammonia desulfurization process generally includes the absorption process of sulfur dioxide, the oxidation process of sulfurous acid, the crystallization process of ammonium sulfate, and finally the ammonium sulfate product is produced by filtration and drying. It has the characteristics of high efficiency and the ability to share the ammonia water supply system with the denitrification process, and has received extensive attention and application in my country. [0003] The crystallization process of ammonium sulfate...

AI Technical Summary

Problems solved by technology

[0004] For example, the patent of Publication No. CN208493876U: a permanent magnetic stirring device for a horizontal desulfurization tower. In this device, the stirring impeller is placed in the desulfurization tower to stir the slurry inside the desulfurization tower, which can solve the problem of slurry deposition to a certain extent. However, due to the limitation of the stirring range of the stirring impeller, there is a disadvantage of poor stirring effect

Images