THERMAL POWER SYSTEM AND METHOD FOR OPERATION THEREOF, METHOD FOR IMPROVEMENT OF THERMAL POWER SYSTEM, STEAM TURBINE INSTALLATION FOR USE IN THERMAL POWER SYSTEM, APPARATUS FOR SEPARATION/COLLECTION OF CARBON DIOXIDE, AND DESUPERHEATER

Title:

Document Type and Number:

WIPO Patent Application WO/2011/104759

Kind Code:

A1

Abstract:

It becomes possible to collect an excess superheat energy of a bleed steam to be delivered from a steam turbine to a re-boiler in a feed water line of the steam turbine in a larger amount, thereby improving the efficiency of the collection. Thus, disclosed is a thermal power system comprising: a boiler (1), a steam turbine, a water condenser (20); a feed water line (101) through which feed water condensed in the water condenser (20) is delivered to the boiler; a carbon dioxide separation/collection unit (200) in which carbon dioxide is separated from a boiler exhaust gas generated in the boiler; a bleed steam feed line (102) through which bleed steam bled from the steam turbine is delivered to the re-boiler (17) in the carbon dioxide separation/collection unit (200); and a desuperheater (14) which is arranged in the bleed steam feed line (102) and can achieve the thermal exchange between the bleed steam to be delivered to the re-boiler(17) and feed water. The system enables the collection of an superheat energy of the bleed steam into the thermal cycle of the steam turbine without the need of decreasing the temperature or pressure of the steam bled from the steam turbine with a spray, and therefore enables the prevention of the deterioration in efficiency of the collection which may be caused by the bleed steam.

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Inventors:

MISHIMA NOBUYOSHI (JP)
SUGIURA TAKASHI (JP)
KOSAKA TETSUYA (JP)

Application Number:

PCT/JP2010/001302

Publication Date:

September 01, 2011

Filing Date:

February 26, 2010

Export Citation:

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Assignee:

HITACHI LTD (JP)
MISHIMA NOBUYOSHI (JP)
SUGIURA TAKASHI (JP)
KOSAKA TETSUYA (JP)

International Classes:

F01K17/00; C01B32/50; F01K7/00; F01K15/00; F01K17/02

Domestic Patent References:

WO2009076575A2

2009-06-18

Foreign References:

JP2006213580A	2006-08-17
JPH03134206A	1991-06-07
JP2004323339A	2004-11-18
JPH05184868A	1993-07-27
JPH03193116A	1991-08-22

Attorney, Agent or Firm:

INOUE, MANABU (JP)
Manabu Inoue (JP)

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