Design engineering of the pilot plant for IGFC combined cycle on the EAGLE project

摘要

Following successful operation of the HYCOL (HYdrogen production process from a COaL) pilot plant as one of the Japanese National Sunshine projects, the new integrated coal gasification pilot plant for fuel cell combined cycle with a coal capacity of 150 tons per day has been under construction at the Wakamatsu operations and general management office of the Electric Power Development Co., Ltd. (EPDC) since October 1998. Since FY 2001, test runs will be started to fix the best start-up procedure and to measure the plant's load flexibility and the specific profile of each process, and pilot-scale IGFC experiments with several grades of coal will follow. In this pilot plant, the oxygen-blown entrained-flow gasifier which can produce stable high calorific CO and H{sub}2 rich syngas reliably is evaluated as a key technology of fuel production for IGFC system. The design of the gasifier is based on the engineering data derived from HYCOL, supports studies using process development units (PDU) and laboratory scale tests. The cold gas clean up process must be applied in order to meet the tolerance limits of impurities for fuel cells. The gas turbine and generator are installed to supply auxiliary power for the pilot plant, and the pressurized cryogenic separation unit demonstrates the integration of the air extracted from the compressor of the gas turbine unit.