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20TPH vertical mill for limestone desulfurization in power plant

20TPH vertical mill for limestone desulfurization in power plant

Capacity 20t/h vertical mill 200mesh limestone powder production for thermal power plant desulfurization line introduction:


Milling machine configuration: VM1500M vertical mill, host power 280KW


Finished size: 200 mesh = D80


Production capacity: 18-20t / h


Customer case: a thermal power plant, 600MW units, more than 10 units, the use of more than six years.


Customer Rating: VM150M vertical mill is running good, stable and reliable performance, convenient maintenance, high degree of automation, easy operation, thermal power plants generate electricity for our work contribute significantly.


Limestone vertical mill feed size is 30-40 mm, product final size is about 80-425 mesh/200-33 micron. Mainly for limestone, calcite, dolomite, barite, talc, calcium carbonate, gypsum, bentonite and other ore materials processing.


VM vertical roller mill in the desulfurization application of humidifier flue gas in the furnace spray calcium tail:


The process is mostly use limestone as absorbent, limestone powder is injected into the furnace by the strength 850 ~ 1150 ℃ temperature region, thermal decomposition of limestone, calcium oxide and carbon dioxide, calcium oxide and sulfur dioxide in the flue gas produced by the reaction of calcium sulfite. Since the reaction between the gas-solid by the impact of the mass transfer process, the reaction is slow, absorbent utilization is low. Activation in the tail reactor humidifier, humidifying water is sprayed into the mist, and unreacted calcium oxide in contact with calcium hydroxide and then reaction of sulfur dioxide in the flue gas. When the calcium to sulfur ratio is controlled between 2.0 to 2.5, the system desulfurization rate is of 65 to 80%. As water was added, the gas humidification temperature drop, the general control of the flue gas outlet temperature above the dew point temperature of 10 ~ 15 ℃, humidifying water as the heating temperature of the smoke is rapidly evaporated, unreacted absorbent, dry state with the reaction product was flue gas exhaust, and collected by the dust collector.


Production capacity at 20t/h VM series vertical mill grinding machine used in thermal power plants, final product size is 200mesh limestone powder, desulfurization process in the furnace injection desulfurization process, additional humidification section in rear of the boiler to improve the desulfurization efficiency.