| 摘要 |
PROBLEM TO BE SOLVED: To provide a gasification power generation system capable or preventing the occurrence of failure at the restart of gas engine operation after back washing of a bag filter. SOLUTION: The back washing device 5 of the bag filter 2 installed in the gasification power generation system for driving a power generator 4 by introducing a biogas generated at a gasification furnace 1 through the bag filter 2 to a gas engine 3 is constituted of a nitrogen gas bomb 21 for the back washing, a fuel gas bomb 22, a nitrogen gas-feeding pipe 23, a fuel gal-feeding pipe 24, and a controller 28 for controlling a second electromagnetic opening and closing valve 26 installed in the midway of the fuel gas-feeding pipe 24 so that the unit calorific value of a mixed gas obtained by mixing the propane gas and the nitrogen gas fed through the gas-feeding pipes 23 and 24 may be nearly equal to the unit calorific value of the biogas. COPYRIGHT: (C)2008,JPO&INPIT
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