酸素/二酸化炭素燃焼法を用いた二酸化炭素回収型高効率発電プラントのシステム検討(オーガナイズドセッション12 CO_2排出抑制技術に関する熱工学)

概要

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O_2/CO_2 combustion technique is suitable for CO_2 capture. A cryogenic air separation using single rectification column was proposed for O_2 production. In the present paper, feasibility study of simplified natural gas combined cycle, NGCC, utilized CO_2 recovery system was deliberated. Power plant consists of three units: ASU (Air Separation Unit), NGCC, and captured-gas compression unit. These units are built on present technologies of conventional plants. Simulation software, HYSYS.Process, was used to simulate and calculate the net thermal efficiency. We have considered two cases; case 1 is 200-300MW output gas turbine, and case 2 is 50MW output gas turbine. As a result, thermal efficiencies achieve 45.4% in case 1 and 43.3% in case 2. In addition, cases have possibilities to increase thermal efficiencies by using of regenerative technique.
社団法人日本機械学会の論文
2004-11-10