PROCEDIMIENTO PARA LICUEFACCION DE CARBON
This invention is a process for liquefying coal in at least two stages, comprising (a) heating a slurry comprising a solid particulate coal, and an externally supplied dispersed dissolution catalyst in the presence of hydrogen in a first reaction zone to substantially dissolve the coal and provide a...
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Main Authors | , |
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Format | Patent |
Language | Spanish |
Published |
11.05.1989
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Edition | 4 |
Subjects | |
Online Access | Get full text |
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Abstract | This invention is a process for liquefying coal in at least two stages, comprising (a) heating a slurry comprising a solid particulate coal, and an externally supplied dispersed dissolution catalyst in the presence of hydrogen in a first reaction zone to substantially dissolve the coal and provide a first effluent slurry having a normally liquid portion comprising solvent and dissolved coal and containing undissolved solids and dispersed dissolution catalyst; and (b) contacting at least a portion of said normally liquid portion containing undissolved solids and dispersed dissolution catalyst with hydrogen in a second reaction zone in the presence of a second externally supplied hydrogenation catalyst under hydrogenation conditions, including a temperature lower than the temperature to which said slurry is heated in step (a), to produce a second effluent slurry having a normally liquid portion. Preferably, the dispersed dissolution catalyst in the first hydrogenation zone is added as an emulsion of aqueous soluble compounds of transition elements, e.g. from Groups IV-B, V-B, VI-B or Group VIII of the Periodic Table. |
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AbstractList | This invention is a process for liquefying coal in at least two stages, comprising (a) heating a slurry comprising a solid particulate coal, and an externally supplied dispersed dissolution catalyst in the presence of hydrogen in a first reaction zone to substantially dissolve the coal and provide a first effluent slurry having a normally liquid portion comprising solvent and dissolved coal and containing undissolved solids and dispersed dissolution catalyst; and (b) contacting at least a portion of said normally liquid portion containing undissolved solids and dispersed dissolution catalyst with hydrogen in a second reaction zone in the presence of a second externally supplied hydrogenation catalyst under hydrogenation conditions, including a temperature lower than the temperature to which said slurry is heated in step (a), to produce a second effluent slurry having a normally liquid portion. Preferably, the dispersed dissolution catalyst in the first hydrogenation zone is added as an emulsion of aqueous soluble compounds of transition elements, e.g. from Groups IV-B, V-B, VI-B or Group VIII of the Periodic Table. |
Author | JOEL W. ROSENTHAL ARTHUR J. DAHLBERG |
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RelatedCompanies | CHEVRON RESEARCH COMPANY |
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Snippet | This invention is a process for liquefying coal in at least two stages, comprising (a) heating a slurry comprising a solid particulate coal, and an externally... |
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SubjectTerms | 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 | PROCEDIMIENTO PARA LICUEFACCION DE CARBON |
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