OS2 CO_2回収型発電システムの技術開発と展望(ガスタービンを取り巻くエネルギー・地球環境問題と諸課題克服への取り組み,オーガナイズドセッション)

概要

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The emission of CO_2 in the coal thermal power plant is one of the most important problem for the electric utility companies. A lot of projects of CO_2 capture and storage(CCS) are planned recently in EU and North America. However, existing technologies on CCS have difficult problems, such as a great decrease of the thermal efficiency and the rise of the cost, to introduce to the power generation system. In this paper, existing technologies for Power generation System with CO2 Capture are reviewed, and a new highly efficiency IGCC system with CO_2 capture was introduced. The system consists of a new oxygen- CO_2 blown coal gasifier and a closed gas turbine using the gas mixed oxygen with CO_2 ,which is recycled from exhaust gas, and the CO_2 separation system is not required in the system. The net thermal efficiency of this system is calculated as 42%(HHV base, 1300℃ class gas turbine) with CO_2 capture and technical subjects for practical use are clarified.
2008-10-01