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Fluidized low temperature carbonization of caking bituminous coal

阅读:299发布:2023-04-21

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1. THE METHOD OF CARBONIZING A FINELY DIVIDED CAKING BITUMINOUS COAL WHICH COMPRISES PREHEATING THE COAL TO AND ELEVATED TEMPERATUER BELOW THE PLASTIC RANGE OF THE COAL IN A FLUIDIZED STATE, CONTACTING THE COAL WITH OXYGEN AT A TEMPERATURE BELOW THE PLASTIC RANGE OF THE COAL, PASSING THE COAL INTO A PREOXIDATION ZONE, MAINTAINING THE COAL IN A FLUIDIZED STATE BY MEANS OF AN OXYGEN-CONTAINING GAS THEREIN AT A TEMPERATURE WITHIN THE PLASTIC RANGE OF THE COAL, PASSING THE COAL AND GASES FROM SAID PREOXIDATION ZONE UPWARDLY WITHOUT DELIBERATE SEAPRATION INTO A CARBONIZATION ZONE, MAINTAINING THE COAL IN A FLUIDIZED STATE THEREIN AT A TEMPERATURE ABOVE THE PLASTIC RANGE OF THE COAL AND SEPARATELY RECOVERING FROM SAID CARBONIZATION ZONE COAL EVOLUTION VAPORS AND SOLID PARTICULATE CARBONIZATION RESIDUE.
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