OXYGEN COMBUSTION SYSTEM AND METHOD FOR OPERATING SAME

WIPO Patent Application WO/2012/042693

A1

[Problem] To implement stable combustion in an oxygen-burning combustion system. [Solution] Provided is a burner (19) that burns pulverized coal using a combustion gas which is a mixture of an oxygen-rich gas and an exhaust gas resulting from the combustion of pulverized coal. Said burner (19) is provided with: a fuel nozzle (25) that burns powdered coal supplied together with a carrier gas; a combustion-gas nozzle (27) that supplies additional combustion gas (26) to the inside of the fuel nozzle (25); and a combustion-gas nozzle (29) that supplies combustion gas (28 and 30) to the outside of the fuel nozzle (25). A carrier gas generated by adding an oxygen-rich gas to an exhaust gas is supplied to the fuel nozzle (25), and a combustion gas generated by adding an oxygen-rich gas to an exhaust gas is supplied to the combustion-gas nozzles (27 and 29). The amount of the carrier gas supplied and the oxygen concentration thereof, the amount of the additional combustion gas (26) supplied and the oxygen concentration thereof, and the amount of the combustion gas (28 and 30) supplied and the oxygen concentration thereof are each made adjustable.

MINE TOSHIHIKO (JP)
KIYAMA KENJI (JP)
KURAMASHI KOJI (JP)
OCHI KENICHI (JP)
OKAZAKI HIROFUMI (JP)

PCT/JP2011/001162

April 05, 2012

February 28, 2011

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BABCOCK HITACHI KK (JP)
MINE TOSHIHIKO (JP)
KIYAMA KENJI (JP)
KURAMASHI KOJI (JP)
OCHI KENICHI (JP)
OKAZAKI HIROFUMI (JP)

F23C99/00; F23C9/08; F23D1/00; F23L7/00

WO2002012791A1

2002-02-14

JP2009270753A	2009-11-19
JP4150968B2	2008-09-17
JP2002243110A	2002-08-28
JP2007147162A	2007-06-14

YOSHIOKA, Kohji (JP)
Hirotsugu Yoshioka (JP)

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