3t/日石炭ガス化研究炉を対象とした数値解析

ー水蒸気添加ガス化の特性評価ー

抄録

CRIEPI is developing a high thermal efficiency integrated coal gasification combined cycle power generation system. The thermal efficiency of the system is enhanced by an active utilization of steam injection into a gasifier, which is expected to promote the steam gasification. The previous survey research by CRIEPI showed the possibility of a higher cold gas efficiency and the expected problems of the system. In this report, a numerical simulation was conducted to investigate the steam enriched gasification characteristics and to find an advantageous condition for the steam injection. The simulation revealed that a larger steam supply achieved a higher cold gas efficiency in the 3t/d bench scale coal gasifier with keeping the temperature in the combustor.