Combined process for coal pyrolysis and char gasification

Finely divided coal is reacted in a combination of processes comprising flash pyrolysis and fluidized bed gasification of char from the pyrolysis. A portion of the char which is heated by the steam-oxygen gasification provides the heat for the pyrolysis step, which can be controlled to emphasize pro...

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Hauptverfasser:	GORIN, EVERETT
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE
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creator	GORIN EVERETT
description	Finely divided coal is reacted in a combination of processes comprising flash pyrolysis and fluidized bed gasification of char from the pyrolysis. A portion of the char which is heated by the steam-oxygen gasification provides the heat for the pyrolysis step, which can be controlled to emphasize production of such materials as light olefins and BTX pyrolyzing at lower pressure and more severe temperature, or to emphasize production of a tar, suitable for processing as a synthetic crude oil, by pyrolyzing at higher pressure and less severe temperature. In either instance the fluidized bed gasification produces a useful synthesis gas.
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A portion of the char which is heated by the steam-oxygen gasification provides the heat for the pyrolysis step, which can be controlled to emphasize production of such materials as light olefins and BTX pyrolyzing at lower pressure and more severe temperature, or to emphasize production of a tar, suitable for processing as a synthetic crude oil, by pyrolyzing at higher pressure and less severe temperature. 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subjects	CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE
title	Combined process for coal pyrolysis and char gasification
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