Development of pressurized coal partial combustor pilot scale (25t/d-coal) test results

摘要

The integrated gasification combined cycle (IGCC), an environment-friendly power generation system of high thermal efficiency, is being developed via various approaches around the world. Kawasaki Heavy Industries Ltd. has conducted R & D on a Coal Partial Combustor (hereinafter referred to as CPC) as a gasifire since 1984, jointly with the Center for Coal Utilization, Japan. Since 1994, Chubu Electric Power Co., Inc. and Electric Power Development Co., Ltd have been cooperating. Through this activity, a structure of the CPC has been established, and these influences of operating parameters on performance have been clarified. The purpose of the present study is to apply this developed CPC techniques to a Pressurized CPC (hereinafter referred to as PCPC) as a gasifier for the IGCC system. For the present study, we conducted systematic experiments on the air-blown process with a two stage dry feed system, using a 7 t/d-coal bench scale test facility and a 25 t/d-coal pilot scale plant, clarified the influence of coal feed ratio, of oxygen enrichment, and of coal types on coal gasification performance. This paper describes conceptual structure of the PCPC, the test results of a 7 t/d-coal bench scale test facility, and 25 t/d-coal pilot plant.