| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gasification system capable of drying brown coal in a good efficiency in a fuel-compositing time, while effectively utilizing nitrogen. <P>SOLUTION: This gasification system including a fluidized bed drying device 12, an air separator 142, a coal gasification furnace 14, a power generation facility 22 and a fuel-compositing device 21 is provided in which fuel gas (gasified gas) is supplied to the power generation facility 22 in a power generation operation time by the power generation facility 22, vapor is supplied as fluidizing gas to the fluidized bed drying device 12 while nitrogen is not supplied as the fluidizing gas from the air separator 142, a high temperature fluid flows inside a heat transfer tube 38, the fuel gas is supplied to the fuel-compositing device 21 in the fuel-compositing time by the fuel-compositing device 21, the vapor is supplied as the fluidizing gas to the fluidized bed drying device 12 and also the nitrogen is supplied from the air separator 142 as the fluidizing gas, and a low temperature fluid at a low temperature as compared with that of the high temperature fluid, flows inside the heat transfer tube 38. <P>COPYRIGHT: (C)2013,JPO&INPIT |
