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

1980-05-05

1982-01-12

Yuen, Henry C.

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

432106, 110347, 110106, F27B 1500, F23D 100

Patent

active

043102999

ABSTRACT:
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.degree. F. to 1650.degree. F. and more is added in the kiln to effect the substantially complete combustion of the pulverized coal in the kiln.

REFERENCES:
patent: 1628609 (1927-05-01), Newhouse
patent: 2494070 (1950-01-01), Thomas
patent: 3918639 (1975-11-01), Binaski
patent: 4092098 (1978-05-01), Honaker et al.
patent: 4131072 (1978-12-01), Lingl, Jr. et al.
patent: 4147116 (1979-04-01), Graybill
patent: 4171950 (1979-10-01), Bliemeister
patent: 4226586 (1980-10-01), Brachthauser et al.
patent: 4236886 (1980-12-01), Ansen et al.
patent: 4246853 (1981-01-01), Mehta
patent: 4250816 (1981-02-01), Angevine et al.
patent: 4270466 (1981-06-01), Ansen et al.
patent: 4280418 (1981-07-01), Erhard

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