Limestone powder preparation process for desulfurization and advantages of desulfurization production line

Thermal power plants often use desulfurization method to prepare limestone powder, the whole set of equipment process mainly includes vibrating feeder, jaw crusher, grinding mill, bucket elevator, belt conveyor, regulating silo, control cabinets, etc., the main equipment to be counted on the limestone mill.

The specific process flow is as follows:

First of all, crushing, large limestone crushed by jaw crusher to the required size, from the bucket elevator to the storage hopper, followed by grinding, and then by the vibrating feeder uniformly and continuously into the mill grinding, grinding limestone powder is blown up by the wind, by the powder selector for grading. The limestone powder which meets the fineness will enter into the cyclone powder collector with the airflow through the pipe, and be separated and collected. The collected finished limestone powder is sent to stone powder bin by conveying device for desulfurization. Unqualified particles are thrown to the cylinder wall after being separated by the powder selector, and fall along the cylinder wall and then return to the mill for grinding. The whole system operates under negative pressure, and the dust does not spill out thus ensuring cleanliness.

Limestone desulfurization production line advantages:

1.Process Advantage. Limestone powder is used as desulfurization agent limestone - gypsum wet desulfurization process, limestone powder needs to pass the solid - liquid two-phase dissolution reaction, the reaction rate is proportional to the specific surface area of limestone particles. The smaller the particle size of the limestone powder particles, the larger the mass specific surface area, the better the dissolution performance of the limestone particles, the higher the rate of various related reactions.

2. Equipment advantages. The main equipment in the production line limestone mill process is simple, high degree of automation, the production of products with stable chemical composition, uniform particle gradation, adjustable fineness can be very good full of flue gas desulfurization required by the appropriate limestone powder, improve the efficiency of desulfurization.

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