| 摘要 |
A coal gasification process and apparatus therefor in which means are provided for supplying fuel to and maintaining a fixed fuel bed in the upper region of a reactor vessel, supplying additional fuel together with a gasifying agent to initiate and maintain gasification in an entrained stage located in the lower region of the vessel, the gasification products from the entrained stage passing up through and gasifying fuel in the fixed bed, the slage from the fixed bed passing downwards to mix with slag from the entrained stage and exits via a slag tap to a slag quench system located below the reactor vessel. The fixed bed may be maintained in the upper region of the vessel by a grate which extends across the vessel. The grate may be cooled by the circulation of an appropriate coolant through the elements forming the grate. |
