| 摘要 |
PROBLEM TO BE SOLVED: To provide a gasification-complex generation system capable of recovering heat by means of a gasifying-cooling apparatus to sufficiently low temperatures, supplying dust-removed gas to a dry desufurization equipment after the temperature of the gas sufficiently rises, without fear of internal clogging or dust flow into the dry desulfurization equipment and/or a gas turbine and furthermore, enabling the system itself to be made compact. SOLUTION: This gasification-complex power generation system consists of a gasifying-cooling apparatus A for gasifying and cooling fuel to produce crude gas, a dry desulfurization equipment B for dry-desulfurizing the crude gas to produce purified gas and a gas turbine complex power generation equipment C for complex power generation through burning the purified gas; wherein, a dust-removing purifier D for removing dust, heavy metals and alkaline components is equipped between the gasifying-cooling apparatus A and the dry desulfurization equipment B. The dust- removing purifier D consists of a scrubbing apparatus 12 for scrubbing the crude gas with cleaning water and a crude gas-heating apparatus 14 for heating the dust- removed gas coming out of the scrubbing apparatus with high-temperature steam. The high-temperature steam is supplied from a waste heat-recovering boiler 8 and set at a higher pressure than that of the dust-removed gas. |
