METHOD AND DEVICE FOR PURGING IN GAS GENERATOR

摘要

When operation of a fluidized gasification furnace (2), in which a produced gas (14) generated by the reaction of a raw material (10) with a gasifying agent is taken out from a free board (F) in the upper part of a fluidized bed (13), is stopped, an inert gas (23) is supplied into the fluidized gasification furnace (2) from the lower part thereof so as to purge the gas in the fluidized bed (13) by the inert gas (23), and steam (S') is supplied to the free board (F) in the upper part of the fluidized bed so as to purge the gas in the free board (F) by the steam (S').