Clean Air: International Journal on Energy for a Clean Environment

ISSN for PRINT: 1561-4417

For Online Access

Best Paper Award Selection - Editorial Board Site

2005, Volume6

Issue 3

166 pages

DOI: 10.1615/InterJEnerCleanEnv.v6.i3

Issue price - $108.00

T. Kakio
CIRPS—Institute of Fluid Science, Tohoku University, Sendai, Japan

Shigenao Maruyama
CIRPS—Institute of Fluid Science, Tohoku University, Katahira 2-1-1, Sendai 980-77, Japan

S. Sakai
Department of Mechanical Engineering and Material Science, Yokohama National University, 79-5, Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan

An improvement on the cryogenic air separation process is proposed and an exergy analysis of the process is performed. In the improved process, a single rectification column is used in place of a double rectification column in order to reduce the exergy loss from air compression. LNG fuel for the power plant can be utilized in the air separation process. In the proposed process, the amount of LNG utilized for cooling is equal to the requirement for the combustion process. The exergy loss in air compression and heat exchange decreases, and the energy consumption for O₂ generation decreases by 14 to 40.7% compared with the conventional double column process. Furthermore, an improvement on the net efficiency of the CO₂ recovery power plant is achieved. The net efficiency increases by 0.9 to 2.2%, compared with the reference plant.

DOI: 10.1615/InterJEnerCleanEnv.v6.i3.80 Download article, 343-355 pages

Article price - $35.00

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