METHOD AND INSTALLATION FOR CEMENT CLINKER PRODUCTION Russian patent published in 2014 - IPC C04B7/44 F27B7/20 

FIELD: chemistry.

SUBSTANCE: in method of cement clinker production cement raw material powder in accordance with invention is preliminarily heated in heater, preliminarily heated cement raw material powder is preliminarily calcinated in calciner, and preliminarily calcinated cement raw material powder is kilned in furnace, with fuel and air used for burning in calciner having oxygen content, at least 75 mol.%, and cement raw material powder is preliminarily calcinated in fluidised bed in calciner. Discharged gases, formed in furnace, are supplied into heater bypassing calciner - into device for preliminarily CO₂ processing. Device of method realisation contains: heater for preliminary heating of cement raw material powder, at least, one, made in form of fluidised bed reactor calciner for preliminary calcination of preliminarily heated cement raw material powder, which has porous or perforated flown through bottom, means for fuel supply and means for air supply for burning with oxygen content, at least, 75 mol.%, as well as for supply of preliminarily heated cement raw material powder, with calcinatory having means for discharge of preliminarily calcinated cement raw material powder, installed below the point of fluid bed extension and connection with furnace, and calcinatory being connected with device for preliminary CO₂ processing for CO₂ separation, furnace for kilning preliminarily calcinated cement raw material powder, containing line for furnace discharged gas, connected with heater bypassing calciner. Invention is developed in dependent items of the invention formula.

EFFECT: increase of method efficiency.

13 cl, 5 dwg