Cyclone preheater, suspension calcination and cooling system process

The combustion air generated by the combustion fan of the suspension calcination system and the coal gas from the coal gasification generator are burned in the combustion chamber through the coal gas burner, producing flue gas with a temperature of 1300-1400 ℃. Under the suction of the main induced draft fan of the suspension calcination system, hot air with a temperature of 1200-1250 ℃ is generated and enters the main and auxiliary furnaces of the suspension calcination furnace. The powder materials entering the suspension calcination furnace is calcined by high-temperature and enters the 1st high-temperature calcination cyclone separator along with hot air. After cyclone separation, the calcined finished product enters the clinker insulation hopper, and is then discharged through the high-temperature electric discharge valve and cooled by air before entering the finished product silo.

The hot air discharged from the 1st cyclone separator of calcination enters the 2nd cyclone separator, and also brings the powder discharged from the electric discharge valve of the 3rd cyclone separator into the 2nd cyclone separator, completing the secondary preheating of the material.

The powder collected by the 2nd cyclone separator enters the main and auxiliary furnaces of the calcination furnace through the electric discharge valve for suspension calcination; The exhaust gas discharged from the 2nd cyclone separator enters the 3rd cyclone separator, and also carries the powder discharged from the electric discharge valve of the 4th drying cyclone separator into the 3rd cyclone separator, completing the first stage preheating of the material.

The exhaust gas discharged from the 3rd cyclone separator enters the flash dryer as the heat source for material drying. At this time, the air temperature entering the dryer is around 430-480 ℃.

The high-temperature material discharged from the high-temperature discharge valve of the calcination system is attracted by the high-pressure induced draft fan of the air delivery system, cooled by the cooling Venturi tube and air delivery pipeline, and enters the cold air cyclone for initial product capture, and then enters the pulse bag dust collector.

The final CCM products are secondary collected by secondary cooling bag filter, the cooled material collected by air-cooled cyclone and cooling bag filter are falling into the finished product silo for storage..