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1. WO1979001064 - COMBINED COAL LIQUEFACTION AND GASIFICATION PROCESS

Publication Number WO/1979/001064
Publication Date 13.12.1979
International Application No. PCT/US1979/000234
International Filing Date 13.04.1979
IPC
C10G 1/00 2006.01
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
1Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
C10G 1/06 2006.01
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
1Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
06by destructive hydrogenation
CPC
C10G 1/006
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION
1Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
006Combinations of processes provided in groups C10G1/02 - C10G1/08
C10G 1/065
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION
1Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
06by destructive hydrogenation
065in the presence of a solvent
Applicants
Inventors
Priority Data
90529812.05.1978US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMBINED COAL LIQUEFACTION AND GASIFICATION PROCESS
(FR) PROCEDE COMBINE DE LIQUEFACTION ET DE GAZEIFICATION DU CHARBON
Abstract
(EN)
Conversion of raw coal to distillate liquid and gaseous hydrocarbon products by solvent liquefaction in the presence of molecular hydrogen employing recycle of mineral residue is commonly performed at a higher thermal efficiency than conversion of coal to pipeline gas in a gasification process employing partial oxidation and methanation reactions. The prior art has disclosed combination coal liquefaction-gasification process employing recycle of mineral residue to the liquefaction zone wherein all the normally solid dissolved coal produced in the liquefaction zone is passed to a gasification zone for conversion to hydrogen, where the amount of normally solid dissolved coal passed to the gasification zone is just sufficient to enable the gasification zone to produce the process hydrogen requirement. An improvement in the thermal efficiency of the combination process is achieved by increasing the amount of normally solid dissolved coal (74) prepared in the liquefaction zone (22, 26) and passed to the gasification zone (76) to enable the gasification zone to generate not only all of the hydrogen (92) required by the liquefaction zone but also to produce excess synthesis gas (94) for use as process fuel. The gasification zone (76) operates with steam (82) and oxygen (80) injection rates resulting in elevated temperatures in the range 2,200 to 2,600 F. which enhance thermal efficiency by accomplishing nearly complete oxidation of carbonaceous feed. These high temperatures produce a synthesis gas (94) relatively richer in CO than H2. Because the synthesis gas is utilized as fuel, hydrogen can be recovered from the synthesis gas without degrading the value of the remaining CO-concentrated stream, since the combustion heating value of a concentrated CO stream (128) is about the same as that of an H2-rich synthesis gas (126).
(FR)
La conversion du charbon brut en hydrocarbures liquides et gazeux distilles par liquefaction au solvant en presence d"hydrogene moleculaire utilisant le recyclage des residus mineraux se fait couramment avec un rendement thermique plus eleve que la conversion du charbon en un gaz de pipeline dans un procede de gazeification utilisant des reactions d"oxydation et de methanation partielles. L"art anterieur a decrit une installation combinee de liquefaction-gazeification du charbon utilisant le recyclage des residus mineraux vers la zone de liquefaction ou tout le charbon dissout solide non converti en produits liquides ou gazeux dans la zone de liquefaction est passe dans une zone de gazeification pour etre converti en hydrogene. Dans l"installation de l"art anterieur la quantite normale de charbon dissout solide qui passe vers la zone de gazeification est juste suffisante pour permettre a la zone de gazeification de produire tout l"hydrogene requis par le procede. Une amelioration du rendement thermique du procede de combinaison est apportee en augmentant la quantite normale de charbon dissout solide (74) preparee dans la zone de liquefaction (22, 26) et envoyee dans la zone de gazeification (76) pour permettre a la zone de gazeification de produire non seulement l"hydrogene (92) requis par la zone de liquefaction mais aussi pour produire du gaz de synthese supplementaire (94) utilisable comme combustible de procede. La zone de gazeification (76) fonctionne avec de la vapeur (82) et de l"oxygene (80) avec des taux d"injection resultant en des temperatures elevees de l"ordre de 2.200 a 2.600 F qui ameliorent le rendement thermique en effectuant une oxydation presque complete du materiau d"alimentation carbonne. Ces temperatures elevees produisent un gaz de synthese (94) relativement plus riche en CO que H2. Etant donne que le gaz de synthese est utilise comme combustible, l"hydrogene peut etre recupere a partir du gaz de synthese sans degrader la valeur du courant restant a concentration en CO, puisque la valeur de calorifique de combustion d"un courant a concentration en CO (128) est environ la meme que celle d"un gaz de synthese riche en H2 (126).
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