Device for preparing composite absorption agent for semidry flue gas purification

Abstract

The invention relates to a preparation device of flue gas cleaning composite absorbent by semidry process. The existing devices have poor using effects. The invention comprises a primary agitator tank, a secondary agitator tank and a tertiary agitator tank. The top face of the primary agitator tank is provided with 3 to 5 atomizing nozzles, the sides of all agitator tanks are provided with stirring inspection holes, the top thereof is provided with feeding ports and the bottom thereof is provided with blanking ports, the feeding ports and the blanking ports are respectively arranged at two ends of the agitator tanks, and the feeding ports of agitator tanks at lower level correspond to the blanking ports of agitator tanks at higher level. All agitator tanks are internally provided with agitating shafts which are provided with agitating rods, and the agitator tanks are internally provided with overflow weirs near the blanking ports. The device of the invention adopts atomizing nozzles which have even sprinkling, small total area and good using effects.

Description

technical field [0001] The invention belongs to the field of environmental engineering machinery and relates to a preparation device for an absorbent capable of simultaneously removing various pollutants in a semi-dry flue gas purification process. Background technique [0002] Absorbent is an important process raw material in the semi-dry flue gas purification process, and its quality and performance directly affect the purification effect of the semi-dry process. At present, the most commonly used absorbent in semi-dry desulfurization technology is slaked lime (calcium hydroxide). There are two main sources of slaked lime, one is to buy directly, and the other is to buy quicklime (calcium oxide), and then produce slaked lime through an absorbent preparation device. Considering the problem of operating cost, most semi-dry desulfurization projects are equipped with absorbent preparation devices to process and produce absorbent for desulfurization by themselves to reduce ope...

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Problems solved by technology

[0004] However, the absorbent preparation device currently in use mainly has the following problems: first, the material in the device is easy to form into balls, which leads to poor stirring effect of the material and affects the purity of the final product; second, the discharge time cannot be controlled, The quality of the final product is unstable; third, the addition of industrial water is not uniform enough, resulting in the high moisture content of some materials, which cannot meet the quality requirements of the absorbent; fourth, only a single slaked lime can be produced as an absorbent, and it is impossible to prepare a composite absorbent Removal effect on other pollutants (such as mercury, dioxin, etc.)

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