| 摘要 |
A combined gasification/devolatilization process for coal in coal residues is disclosed wherein hydrogen rich volatiles are recovered prior to gasification of the coal. The recovery of hydrogen volatiles is dependent upon the rapid heating of coal obtained by admixture with hot char previously gasified in a riser with steam and a catalyst if necessary. The hot char is provided by combustion of devolatilized coal in a fluid bed regenerator. Alternative systems are provided for purifying the devolatilized coal prior to its charring.
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