Method for firing a rotary kiln with pulverized solid fuel

Details Method for firing a rotary kiln with pulverized solid fuel Method for firing a rotary kiln with pulverized solid fuel

F - Mech Eng,Light,Heat,Weapons

27

B

110/19, 39/33

F27B 7/34 (2006.01) C21B 13/08 (2006.01) F23C 6/04 (2006.01) F23D 1/00 (2006.01) F23K 3/02 (2006.01)

Patent

CA 1150504

METHOD FOR FIRING A ROTARY KILN WITH PULVERIZED SOLID FUEL ABSTRACT OF THE DISCLOSURE Disclosed is a method for firing a kiln as well as a method for producing cement clinker in which pulverized coal is initially entrained in an airflow of about 2% of the theoretical amount of air needed to combust the coal and transport it to a burner. Supplemental primary air heated sufficiently to vaporize volatiles in the coal is mixed with the coal flow in a burner, discharged into the kiln and hence ignited. Secondary combustion air heated to between 800°F to 1650°F and more is added in the kiln to effect the substan- tially complete combustion of the pulverized coal in the kiln.

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