Limestone powder slurry making slurry system and slurry making method thereof

Abstract

The invention belongs to the technical field of environment protection in a heat-engine plant, and discloses a limestone powder slurry making slurry system and a slurry making method thereof. The problems that the fineness of powder ground by a grinding machine grinding limestone powder slurry making system is great, the energy consumption of equipment is high, the fault rate is high, the starting time is long, and the like. The slurry system comprises a limestone powder cabin, a fluidization fan, a limestone powder feeding machine, a limestone powder slurry box, a limestone powder slurry box stirrer, a slurry supply pump and an adsorption tower, wherein the side surface of the limestone powder cabin is connected with the fluidization fan; the bottom of the limestone powder cabin is connected with the limestone powder feeding machine; a feed opening of the limestone powder feeding machine is connected with the limestone powder slurry box; slurry in the limestone power slurry box is conveyed to an absorption tower through the slurry supply pump. The system and the method provided by the invention have the advantages that the equipment and the slurry making flow process of the limestone slurry making system are simplified; the engineering manufacturing price of the equipment is reduced; the equipment maintenance cost and the desulfurization slurry making electric consumption are reduced; the stability, the economic performance and the reliability of a desulfurization system are improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection in thermal power plants, in particular to a desulfurization pulping system in a thermal power plant, in particular to a slurry system for pulping limestone powder and a pulping method thereof. Background technique [0002] At present, in the flue gas limestone wet desulfurization system of thermal power plants, the slurry of the limestone slurry supply system is generally made by grinding limestone with a ball mill for pulping. This pulping system has many equipments, complex systems, high failure rate, and high power consumption rate. The pulping equipment takes a long time to start, and the CaCO in the slurry 3 The fineness of the particles is greatly affected by factors such as the diameter of the steel ball and the proportion of the steel ball. CaCO 3 The particle fineness exceeds the standard, which directly affects the SO 2 The adequacy of the chemical reaction affects th...

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Problems solved by technology

[0005] In order to solve the problems existing in the grinding limestone pulping system, such as large fineness of ground limestone powder, high equipment energy consumption, high failure rate, long start-up time, etc., the present invention provides a limestone powder pulping slurry system and its preparation. slurry method

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