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Characteristics evaluation of a CO 2 ‐capturing power generation system with reheat cycle utilizing regenerative oxygen‐combustion steam‐superheater
Author(s) -
Sik Pak Pyong
Publication year - 2008
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.20575
Subject(s) - superheater , superheated steam , steam electric power station , condenser (optics) , heat recovery steam generator , steam turbine , thermal power station , nuclear engineering , combustion , combined cycle , surface condenser , engineering , electricity generation , process engineering , thermal efficiency , superheating , mechanical engineering , power (physics) , waste management , boiler (water heating) , turbine , chemistry , thermodynamics , light source , physics , optics , organic chemistry
Abstract A new CO 2 ‐capturing power generation system is proposed that can be easily realized by applying conventional technologies. In the proposed system, the temperature of medium‐pressure steam in a thermal power plant is raised by utilizing an oxygen‐combusting regenerative steam‐superheater. The CO 2 generated by combusting the fuel in the superheater can be easily separated and captured from the exhaust gas at the condenser outlet, and is liquefied. The superheated steam is used to drive a steam turbine power generation system. Using a high‐efficiency combined cycle power generation system as an example, it is shown that the proposed system can increase the power output by 10.8%, and decrease the CO 2 emissions of the entire integrated system by 18.6% with a power generation efficiency drop of 2.36% compared with the original power plant without CO 2 capture, when the superheated steam temperature is 750 ° C. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 165(1): 35–41, 2008; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20575