| 摘要 |
Provided is a method for operating a coal gasification system (1) which manufactures at least hydrogen gas and carbon monoxide gas by allowing coal to be gasified using the coal gasification system (1) having a two-layer structured coal gasification reaction furnace (20) that includes: a partial oxidization unit (21) which is disposed on a bottom column and partially oxidizes coal; and a pyrolysis unit (22) which communicates with the partial oxidization unit (21), is disposed on a top column, and pyrolyzes the coal. In this method, coal and char are supplied to the partial oxidization unit (21) as well as supplied to the pyrolysis unit (22), and when the weight of ash increases, the amount of fixed carbon supplied into the pyrolysis unit (22) is also increased, said weight of the ash generated from the coal supplied to the partial oxidization unit (21) and is supplied to the pyrolysis unit. |
