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Title:
CIRCULATING FLUIDIZED BED BOILER AND OPERATING METHOD OF SAME
Document Type and Number:
WIPO Patent Application WO/2019/082756
Kind Code:
A1
Abstract:
The present invention provides a circulating fluidized bed boiler which can efficiently chemically react alkali salts diffused in exhaust gas by fuel, even if a fuel that contains a large amount of alkali salt is used, and can suppress the adhesion of alkali salts to a superheater and the corrosion of the superheater due to such adhesion. The present invention also provides a method for operating the circulating fluidized bed boiler. This circulating fluidized bed boiler comprises: a furnace; a solid-gas separation device that collects solid particles discharged from the furnace; a return section (122) at which solid particles collected by the solid-gas separation device are accumulated before being returned to inside the furnace; and an introduction unit (125) that introduces a sulfur element-containing compound to the return section.

Inventors:
YOSHIDA, Kazuki (5-2, Sobiraki-cho, Niihama-sh, Ehime 88, 〒7928588, JP)
AGAWA, Ryuichi (5-2, Sobiraki-cho, Niihama-sh, Ehime 88, 〒7928588, JP)
Application Number:
JP2018/038623
Publication Date:
May 02, 2019
Filing Date:
October 17, 2018
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES, LTD. (1-1 Osaki 2-chome, Shinagawa-ku Tokyo, 25, 〒1416025, JP)
International Classes:
F23C10/10; F23G5/30
Foreign References:
JPH02247407A1990-10-03
JPH09303743A1997-11-28
JPH10300059A1998-11-13
JP2000291931A2000-10-20
JP2004523348A2004-08-05
Attorney, Agent or Firm:
ARAFUNE, Hiroshi et al. (17F. Tokyo Takarazuka Bldg., 1-1-3, Yurakucho, Chiyoda-k, Tokyo 06, 〒1000006, JP)
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