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7247235 Hydrogenation of middle distillate using a counter-current reactor  
A process for the hydrogenation of a hydrocarbon feed includes contacting a major amount of the hydrocarbon feed with hydrogen in a counter-current manner in a first reaction zone under...
7076346 Automated continuous haulage system  
The present invention relates to an automated continuous haulage apparatus and method designed for use in underground environments. Each mobile bridge carrier ( 10 ) contains distance measurement (...
6319395 Process and apparatus for converting oil shale or tar sands to oil  
The invention relates to a continuous process for producing synthetic crude oil from oil bearing material, e.g., oil shale or tar sand, through continuous process for producing synthetic crude oil...
5269910 Method of coil liquefaction by hydrogenation  
A method for hydro-liquefying coal, the method comprising preheating a slurried mixture of a pulverized coal and a solvent, the preheated mixture being supplied to a plurality of reactors;...
5246570 Coal liquefaction process using soluble molybdenum-containing organophosphorodithioate catalyst  
A coal liquefaction process employing a first stage liquefaction step catalyzed by a soluble molybdenum-containing organophosphorodithioate catalyst is disclosed. In some embodiments, two...
5122260 Liquefaction of solid carbonaceous material with catalyst recycle  
In the two stage liquefaction of a carbonaceous solid such as coal wherein coal is liquefied in a first stage in the presence of a liquefaction solvent and the first stage effluent is hydrogenated...
5120429 Co-processing of carbonaceous solids and petroleum oil  
In a process for producing distillates from coal by a first stage thermal liquefaction followed by a catalytic hydrogenation, liquefaction solvent is added at points spaced over the length of the...
5110450 Coal extract hydroconversion process comprising solvent enhanced carbon monoxide pretreatment  
An improved process for the hydroconversion of coal, wherein coal is slurried in an organic solvent and subjected to pretreatment with carbon monoxide, followed by separation of a solvent-soluble...
5055181 Hydropyrolysis-gasification of carbonaceous material  
Disclosed is a process for obtaining liquids and gases from carbonaceous material, such as coal. The carbonaceous material is first treated with a gasification catalyst, and optionally a...
5026475 Coal hydroconversion process comprising solvent extraction (OP-3472)  
An improved process for the hydroconversion of coal comprising pretreating coal in an aqueous carbon monoxide-containing environment, followed by extracting a soluble hydrocarbon material from the...
5009770 Simultaneous upgrading and dedusting of liquid hydrocarbon feedstocks  
A process of concurrently dedusting and upgrading particulate laden raw, whole retort oil is provided which comprises the steps of: retorting solid hydrocarbon-containing material such as oil shale...
4982027 Process for the reprocessing of carbon containing wastes  
This invention relates to an improved process for the reprocessing of carbon containing wastes by pretreating the same thermally in the presence or absence of hydrogen, followed by hydrogenation of...
4946583 Process for the liquefaction of coal  
In a process for the liquefaction of coal under increased pressure and temperature in a liquefaction zone, it is recommended that the liquefaction product exiting the liquefaction zone is fed into...
4795841 Process for upgrading biomass pyrolyzates  
Pyrolyzate oil is made amendable to hydrotreatment without substantial coking problems by means of pre-treatment with hydrogen at temperatures in the range of 250° to 300° C.
4741822 Procedure for hydrogenation of coal by means of liquid phase and fixed-bed catalyst hydrogenation  
Procedure for hydrogenation of coal by means of liquid phase and fixed-bed catalyst hydrogenation whereby the head products of the high-temperature separator are led directly, and together with the...
4740289 Process for the hydrogenolysis of a coal liquid bottom  
A process for the hydrogenolysis of a coal liquid bottom containing benzene-insoluble components and having a boiling point of at least 420° C., which comprises: (a) hydrogenating the coal...
4714543 Method of treating brown coal for liquefaction  
A starting slurry composed of raw brown coal and a solvent is heated and pressurized, subjected to gas-liquid separation and dehydration and then to hydrogenation/liquefaction. The CO 2 ...
4696735 Method and apparatus for multiphase coal hydrogenation reactors with exothermal heat of reaction having gas cooling in sump-phase reactors  
A practically isothermal temperature distribution of the reactor contents is obtained, especially for high temperature and pressurized hydrogenation reactors operating in the sump-phase by a...
4639310 Process for the production of reformer feed and heating oil or diesel oil from coal by liquid-phase hydrogenation and subsequent gas-phase hydrogenation  
A process for the production of reformer feed and heating or diesel oil from coal which comprises introducing a pulverized coal-oil slurry together with a hydrogenation gas into a liquid-phase...
4617105 Coal liquefaction process using pretreatment with a binary solvent mixture  
An improved process for thermal solvent refining or hydroliquefaction of non-anthracitic coal at elevated temperatures under hydrogen pressure in a hydrogen donor solvent comprises pretreating the...
4609455 Coal liquefaction with preasphaltene recycle  
A coal liquefaction system is disclosed with a novel preasphaltene recycle from a supercritical extraction unit to the slurry mix tank wherein the recycle stream contains at least 90%...
4605486 Coal liquefaction process with increased naphtha yields  
An improved process for liquefying solid carbonaceous materials wherein the solid carbonaceous material is slurried with a suitable solvent and then subjected to liquefaction at elevated...
4602992 Coal hydrogenation process with integrated refining stage  
In accordance with the invention, during hydrogenation by means of sump phase hydrogenation followed by gas-phase hydrogenation, the high boiling fractions are separated from the lower boiling...
4595488 Multistage process for the direct liquefaction of coal  
Moisture- and ash-free coking coal is micronized and admixed with a recycle oil, whereafter it is rapidly hydrogenated and one portion of the residue of the fractional distillation of the...
RE32120 Hydrotreating supercritical solvent extracts in the presence of alkane extractants  
A process of recovering the hydrocarbon values from low organic carbon content deposits comprises the hydrotreating of hydrocarbons from those deposits in the presence of supercritical...
4547282 Coal liquefaction and hydrogenation  
The coal liquefaction process disclosed uses three stages. The first stage is a liquefaction. The second and third stages are hydrogenation stages at different temperatures and in parallel or in...
4536275 Integrated two-stage coal liquefaction process  
This invention relates to an improved two-stage process for the production of liquid carbonaceous fuels and solvents from carbonaceous solid fuels, especially coal.
4522700 Coal liquefaction  
In a two-stage liquefaction wherein coal, hydrogen and liquefaction solvent are contacted in a first thermal liquefaction zone, followed by recovery of an essentially ash free liquid and a pumpable...
4521291 Coal extraction  
Coal is extracted using a mixed solvent which includes a substantially aromatic component and a substantially naphthenic component, at a temperature of 400° to 500° C. Although neither component...
4519895 Process for converting a carbonaceous material to lower paraffinic hydrocarbons and monocyclic aromatic hydrocarbons  
A carbonaceous material is subjected, in admixture with a hydrogenated recycle oil, to hydrogenation in two successive steps at respective temperature ranges of 350°-470° C. and 600°-1000° C.,...
4510040 Coal liquefaction process  
This invention relates to an improved process for the production of liquid carbonaceous fuels and solvents from carbonaceous solid fuels, especially coal. The claimed improved process includes the...
4510037 Hydrogenation process for solid carbonaceous feed materials using thermal countercurrent flow reaction zone  
Thermal hydrogenation of solids-containing carbonaceous feed materials to produce hydrocarbon gaseous and liquid products is performed in a thermal reaction zone, in which the feed material flows...
4502940 Method for extracting caking coals  
Caking coals can be solvent extracted in high yields without agglomeration by a first stage extraction of 380° C. to 420° C. and at a pressure above the critical pressure of the solvent, followed...
4493763 Pretreatment of oil-shale for enhanced arsenic removal  
Disclosed is a method for pretreating oil-shale such that upon subsequent processing the shale-oil obtained is substantially free of arsenic. The pretreatment comprises heating the oil-shale in a...
4491511 Two-stage coal liquefaction process  
An improved SRC-I two-stage coal liquefaction process which improves the product slate is provided. Substantially all of the net yield of 650°-850° F. heavy distillate from the LC-Finer is...
4485008 Liquefaction process  
An improved liquefaction process for solid carbonaceous materials wherein at least a portion of the liquefaction is accomplished in the presence of an added hydrogenation catalyst and a solvent...
4472264 Process for converting solid carbonaceous materials to methane  
Process for converting solid carbonaceous materials to methane, comprising (a) converting the carbonaceous material by means of a reducing gas at 300°-500° C. to a semi-oily phase adapted to be...
4468314 Hydropyrolysis of carbonaceous material  
Disclosed is a process for converting solid carbonaceous material, such as coal and oil-shale, to a discriminate range of liquid and gaseous products, which process comprises treating the...
4464245 Method of increasing the oil yield from hydrogenation of coal  
The overall yield from hydrogenation of coal is increased by following the method of the present invention according to which additional amounts of oil are released from the separated residue...
4450066 Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials  
Scale formation during the liquefaction of lower ranking coals and similar carbonaceous materials is significantly reduced and/or prevented by hydrothermal pretreatment. The said pretreatment is...
4447312 Process for improving the diesel fuel quality of coal derived liquids  
A process for preparing diesel fuel from coal-derived light fuel oils by alkylating said coal-derived light fuel oils with olefins and hydrotreating said alkylated product.
4440622 Integration of short-contact-time liquefaction and critical solvent deashing with gasification through methanol-to-gasoline  
Coal is processed by liquefying the coal with a hydrogen-donor solvent under a short-contact-time liquefaction, separating the coal liquid effluent into liquid phases of distinct polarity and an...
4414094 Solvent refined coal reactor quench system  
There is described an improved SRC reactor quench system using a condensed product which is recycled to the reactor and provides cooling by evaporation. In the process, the second and subsequent...
4400261 Process for coal liquefaction by separation of entrained gases from slurry exiting staged dissolvers  
There is described an improved liquefaction process by which coal is converted to a low ash and low sulfur carbonaceous material that can be used as a fuel in an environmentally acceptable manner...
4375402 Pyrolysis process  
In a process for recovery of values contained in solid carbonaceous material, the solid carbonaceous material is comminuted (10) and then subjected to pyrolysis, in the presence of a solid...
4357228 Recovery of hydrocarbon values from pyrolytic vapors  
A process for producing light aromatics, intermediate coal liquids, tar acids, and heavy hydrocarbons from pyrolytic vapors produced by the pyrolysis of coal is described herein. Such pyrolytic...
4356077 Pyrolysis process  
Pyrolytic vapors, produced by the pyrolysis of coal, are contacted with a quench liquid which comprises a hydrogen donor solvent to condense the pyrolytic vapors and form a liquid mixture which...
4338184 Coal conversion in the presence of added alkali metal compounds  
Coal or similar liquefiable carbonaceous solids are converted into hydrocarbon liquids by contacting the feed solids with molecular hydrogen in the absence of an added hydrocarbon solvent and in...
4338182 Multiple-stage hydrogen-donor coal liquefaction  
An improved process for liquefying coal and similar solid carbonaceous materials wherein the liquefaction is accomplished in a plurality of zones or stages and wherein the temperature is increased...
4336125 Production of synthetic hydrocarbon fuels from peat  
A process and apparatus for production of synthetic hydrocarbon fuels from peat providing wide variation of the composite proportion of liquid-gas output while maintaining high overall carbon...
Matches 1 - 50 out of 98 1 2 >