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Patent Searching and Data


Title:
METHOD FOR OPERATING CEMENT KILN
Document Type and Number:
WIPO Patent Application WO/2018/025482
Kind Code:
A1
Abstract:
[Problem] To reduce the concentration of both SOx and NOx in combustion gas discharged from a cement kiln. [Solution] A method for operating a cement kiln 7, comprising adjusting the oxygen partial pressure in a kiln end 5 of the cement kiln 7 to 4 to 7% to suppress generation of SOx from cement starting material R3 and clinker inside the cement kiln 7, and blowing fuel F2 and combustion air A into the kiln end 5 through a denitration burner 6 to decompose NOx included in exhaust gas G1 of the cement kiln 7 that passes inside the kiln end 5. The fuel F2 and the combustion air A can be blown through a plurality of burners provided in the kiln end 5 of the cement kiln 7. The fuel F2 may include one or more selected from pulverized coal, heavy oil, natural gas, coal ash, and gasified combustible waste or combustible substance.

Inventors:
SUZUKI Hideto (2-17-12 Kiba, Koto-k, Tokyo 42, 〒1350042, JP)
Application Number:
JP2017/020179
Publication Date:
February 08, 2018
Filing Date:
May 31, 2017
Export Citation:
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Assignee:
TAIHEIYO ENGINEERING CORPORATION (2-17-12, Kiba Koto-k, Tokyo 42, 〒1350042, JP)
International Classes:
C04B7/44; F27B7/36; F27D17/00
Attorney, Agent or Firm:
NAKAI Jun (2nd Floor, Ezawa Building 10-8, Shinjuku 5-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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