Title:
BOILER AND OPERATING METHOD OF SAME
Document Type and Number:
WIPO Patent Application WO/2012/053222
Kind Code:
A1
Abstract:
Disclosed is an operating method of a boiler, wherein fossil fuel is combusted by first combustion gas and second combustion gas compensating for the lack of oxygen of the first combustion gas, and operation is switched between an air combustion mode in which air is used as the first and second combustion gas and an oxygen combustion mode in which mixed gas of exhaust gas of the fossil fuel and enriched oxygen gas is used as the first and second combustion gas. In this operating method, the enriched oxygen gas is mixed with air of the first combustion gas used in the air combustion mode in the process of switching between the air combustion mode and the oxygen combustion mode, thereby being capable of switching between the air combustion mode and the oxygen combustion mode while maintaining stable combustion.
Inventors:
OKAZAKI HIROFUMI (JP)
KURAMASHI KOJI (JP)
OCHI KENICHI (JP)
IMOOKA NAOYA (JP)
DERNJATIN PAULI (FI)
KURAMASHI KOJI (JP)
OCHI KENICHI (JP)
IMOOKA NAOYA (JP)
DERNJATIN PAULI (FI)
Application Number:
PCT/JP2011/005901
Publication Date:
April 26, 2012
Filing Date:
October 21, 2011
Export Citation:
Assignee:
BABCOCK HITACHI KK (JP)
FORTUM CORP (FI)
OKAZAKI HIROFUMI (JP)
KURAMASHI KOJI (JP)
OKIMOTO HIDEO (JP)
OCHI KENICHI (JP)
IMOOKA NAOYA (JP)
DERNJATIN PAULI (FI)
FORTUM CORP (FI)
OKAZAKI HIROFUMI (JP)
KURAMASHI KOJI (JP)
OKIMOTO HIDEO (JP)
OCHI KENICHI (JP)
IMOOKA NAOYA (JP)
DERNJATIN PAULI (FI)
International Classes:
F23L7/00; F23C9/08
Domestic Patent References:
| WO2009110036A1 | 2009-09-11 |
Foreign References:
| JPH05231609A | 1993-09-07 | |||
| JP2010032173A | 2010-02-12 | |||
| JP2011075176A | 2011-04-14 | |||
| JPS6358007A | 1988-03-12 |
Attorney, Agent or Firm:
YOSHIOKA, Kohji (JP)
Hirotsugu Yoshioka (JP)
Hirotsugu Yoshioka (JP)
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Claims: