A-18 DME化学再生発電システムの開発 : マイクロガスタービンによる性能評価(新サイクル技術,一般講演)

概要

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The Chemically Recuperated Gas Turbine (CRGT) system is an advanced GT cycle that converts the fuel into the hydrogen-rich gas by recovering the exhaust heat from the gas turbine. The principal reaction of fuel conversion is steam reforming. Since the steam reforming is an endothermic reaction, the exhaust heat from gas turbine can be recovered by the fuel not only thermally but also chemically and the power generation efficiency can be improved by burning the converted fuel. This report shows the demonstration of power generation test by the DME-fueled CRGT using the 30kWmicro gas turbine(MGT). The heat recovery system, which mainly consists of the steam generator and the DME steam reformer, was directly installed into the exhaust gas duct. The reformer consists of many vertical tubes packed with the noble-metal catalyst supported on alumina. The power generation test, combining the MGT generator set, all heat recovery equipments and the supply systems of DME and demineralized water, were conducted. As a result, the power generation efficiency of CRGT was improved approximately 10%compared to the efficiency of the steam injection(STIJ) GT cycle which was a proven technology, and 10ppm or less NOx emission from the MGT was attained by the premixed combustion of the GT-exhaust gas.
2007-09-01