Characteristics Evaluation of a CO<sub>2</sub>-Caputuring Power Generation System with Reheat Cycle Utilizing Regenerative Oxygen-Combustion Steam-Superheater

  • Pak Pyong Sik
    Graduate School of Information Science and Technology, Osaka University

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Other Title
  • 酸素燃焼蓄熱式蒸気過熱器を利用したCO<sub>2</sub>回収再熱発電システムの特性評価
  • 酸素燃焼蓄熱式蒸気過熱器を利用したCO2回収再熱発電システムの特性評価
  • サンソ ネンショウチクネツシキ ジョウキ カネツキ オ リヨウ シタ CO2 カイシュウ サイネツ ハツデン システム ノ トクセイ ヒョウカ

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Abstract

A new CO2-capturing power generation system is proposed that can be easily realized by applying conventional technologies. In the proposed system, the temperature of middle-pressure steam in a thermal power plant is raised by utilizing oxygen-combusting regenerative steam-superheater. The generated CO2 by combusting fuel in the superheater can be easily separated and captured from the exhaust gas at condenser outlet, and is liquefied. The superheated steam is used to drive a steam turbine power generation system. By adopting a high efficient combined cycle power generation system as an example, it has been shown that the proposed system can increase power output by 10.8%, decrease the CO2 emission amount of the total integrated system by 18.6% with power generation efficiency drop of 2.36% compared with the original power plant without CO2-capture, when superheated steam temperature is 750°C

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