Matches 1 - 50 out of 86 1 2 >


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8043505 Treatment equipment of organic waste and treatment method  
In treatment equipment of organic waste provided with a high temperature and pressure treatment apparatus to produce a slurried material by conducting the high temperature and high pressure...
5936134 Method for obtaining storable products of calorific energy and synthetical oils, by processing waste rubber materials with coal  
A method for producing synthetical oils and storable products of calorific energy, by co-processing waste rubber materials, especially waste tires, and coal optionally in the presence of a material...
5571403 Process for extracting hydrocarbons from diatomite  
An improved process for extracting hydrocarbons from a diatomite ore which comprises the combination of the steps of:a) Reducing the particle size of the ore to form a processed ore;b) Grinding the...
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...
5047143 Method for converting lower grade uintaite to higher grade materials  
I disclose a method for upgrading low-grade uintaite to high-grade uintaite having a desired meltpoint. It comprises dissolving the uintaite in a medium polarity solvent, mixing the dissolved...
5015366 Process and apparatus for coal hydrogenation  
In a coal liquefaction process an aqueous slurry of coal is prepared containing a dissolved liquefaction catalyst. A small quantity of oil is added to the slurry and then coal-oil agglomerates are...
4828031 In situ chemical stimulation of diatomite formations  
An improved method of recovering oil from diatomite is described. A solvent is injected into the diatomite followed by an aqueous surface active solution. The aqueous surface active solution...
4798668 Extraction of hydrocarbon-containing solids  
Hydrocarbon liquids are recovered from oil shale and other solids containing organic material by heating the solids to a temperature below about 900° F., preferably between about 550° F. and a...
4764270 Simultaneous upgrading of tar sand bitumen and coal by corefining  
An improved tar sands derived bitumen and coal liquification process is disclosed wherein substantial percentages of subdivided coal particles and tar sands derived bitumen liquids are mixed and...
4698149 Enhanced recovery of hydrocarbonaceous fluids oil shale  
The present invention relates to a novel method for improving the recovery of hydrocarbon fluids from oil shale. The method comprises treating a mixture of oil shale and hydrocarbon fluid at a...
4664788 Multi-stage coal liquefaction and fractionation method  
A multi-stage coal liquefaction method in which coal is slurried with a primary light solvent, such as toluene, hexane and/or cyclohexane, and a process-derived primary heavy solvent. The...
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...
4587004 Process for beneficiating oil-shale  
Disclosed is a process for beneficiating oil-shale wherein the oil-shale is treated in a first stage with an aqueous ammonium salt solution and in a second stage and optionally a third stage in the...
4587005 Process for beneficiating Rundle oil-shale  
Disclosed is a process for removing mineral matter from Rundle oil-shale by contacting the oil-shale with (a) an ammonium salt solution and (b) an organic solvent, at a temperature from about 0° ...
4545891 Extraction and upgrading of fossil fuels using fused caustic and acid solutions  
A crushed hydrocarbon-bearing material containing hydrocarbon and foreign mineral constituents is dispersed in fused alkali metal caustic to remove the sulfur content and release the foreign...
4539095 Aqueous alkali depolymerization of coal with a quinone  
A process is set forth for depolymerizing coal in an aqueous alkaline medium in the presence of a quinone and a hydrogen atmosphere. The depolymerized solid product is significantly ethyl acetate...
4539094 Extraction of depolymerized carbonaceous material using supercritical ammonia  
Improved extraction and recovery of carbonaceous products are achieved by the aqueous alkali depolymerization of carbonaceous materials, low rank coals, followed by the supercritical extraction...
4539093 Extraction process and apparatus for hydrocarbon containing ores  
There is provided a hydrocarbon extraction process and apparatus for removing hydrocarbons from a hydrocarbon containing ore such as a diatomite ore. The ore is preprocessed to the extent required...
4518480 Process for the efficient utilization of solvent modified oil shales  
A combination process for the treatment of oil shale to recover hydrocarbonaceous material therefrom comprising the steps of solvent treating said oil shale, sequentially solvent extracting said...
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 b...
4491512 Recovery of oil from oil-bearing carbonates  
Oil is recovered from oil-bearing rock composed primarily of carbonates by treating the oil-bearing rock with an aqueous solution of an alkali metal compound selected from the group consisting of...
4490213 Coal conversion processes  
Coal is processed sequentially over a range of temperatures up to a maximum of 750° F. and preferably considerably less to obtain a clean burning coke, refinable petroleum and bitumen products, ...
4469584 Process for pyrolyzing oil-shale  
Disclosed is a process for converting solid carbonaceous material, such as oil-shale, to a discriminate range of liquid and gaseous products, which process includes treating the carbonaceous...
4449586 Process for the recovery of hydrocarbons from oil shale  
A process for the recovery of hydrocarbonaceous oil from oil shale is disclosed. The process comprises: (a) heating the shale in the presence of a gas comprising hydrogen sulfide at subcritical...
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...
4431510 Process for producing hydrogen-enriched hydrocarbonaceous products from coal  
A process for producing hydrogen-enriched hydrocarbonaceous products from coal which comprises: (a) contacting the coal in a solvent extraction zone at solvent extraction conditions with a coal...
4428820 Coal liquefaction process with controlled recycle of ethyl acetate-insolubles  
A process for increasing the conversion of coal to ethyl acetate-soluble products comprising: (a) heating a slurry comprising a solvent and particulate coal in a dissolution zone to produce a first...
4396488 Process for coal liquefaction employing a superior coal liquefaction process solvent  
A process for producing a superior coal liquefaction solvent. A particulate coal is admixed with a distillable aromatic hydrocarbon solvent and liquefied under predetermined conditions to form coal...
4389950 Process for burning retorted oil shale and improved combustor  
Combustor and process for burning particularized oil shale by preburning separate fine and coarse particle feedstreams prior to mixing in the main combustion zone.
4387015 Coal liquefaction quenching process  
There is described an improved coal liquefaction quenching process which prevents the formation of coke with a minimum reduction of thermal efficiency of the coal liquefaction process. In the...
4376693 Solid liquid extraction  
A process for replacing a solution obtained for instance by exposing oil shale particles to the action of a solvent under supercritical conditions, by a solvent is provided for. The solid/solution...
4376032 Coal Liquefaction desulfurization process  
In a solvent refined coal liquefaction process, more effective desulfurization of the high boiling point components is effected by first stripping the solvent-coal reacted slurry of lower boiling...
4374023 Process for recovering hydrocarbons from a diatomite-type ore  
A process for recovering hydrocarbons from a diatomite-type ore which comprises contacting the diatomite ore with a C4 -C10 alcohol and thereafter contacting the diatomite ore-alcohol mixture with...
4366043 Method and apparatus for heat processing pulverized brown coal  
Heat processing of pulverized brown coal is carried out in two stages. In a chamber for the first-stage heating, brown coal to be processed is heated to a temperature of thermal decomposition...
4322283 Coal conversion in the presence of added hydrogen sulfide  
Coal or similar liquefiable carbonaceous solids are converted into lower molecular weight liquids by contacting the feed solids with molecular hydrogen in the absence of externally added...
4299684 Demineralization of coal  
Disclosed is a method for comminuting and simultaneously removing mineral matter from coal by first treating the coal with a quaternary base solution, such as tetrabutylammonium hydroxide, then...
4269692 Coal refining  
A process for fossil fuel refining by contacting ground solid fossil fuel for about 1/2 to about 3 hours with phenol at a temperature of about 600° to 690° F. and a corresponding saturation p...
4225420 Process for improving soluble coal yield in a coal deashing process  
Coal liquefaction products are contacted with a deashing solvent and introduced into a first separation zone. The first separation zone is maintained at an elevated temperature and pressure,...
4211632 Method for heat processing of pulverized brown coal  
According to the invention pulverized brown coal is processed by heating brown coal in two stages. During the first stage brown coal being processed is heated by a gaseous heat carrier to a...
4191628 Process for removal of mineral particulates from coal-derived liquids  
Suspended mineral solids are separated from a coal-derived liquid containing the solids by a process comprising the steps of: (a) contacting said coal-derived liquid containing solids with a molten...
4189371 Multiple-stage hydrogen-donor coal liquefaction process  
An increased yield of hydrogenated liquid product is obtained from coal by treating the feed coal with a hydrogen-donor solvent and hydrogen-containing gas in a first coal liquefaction reactor to...
4174263 Recovery of bitumen from tar sands  
Bitumen is separated from tar sands by contacting the tar sands with a small amount of liquid, heating the liquid treated tar sands to expand the liquid as a vapor thereby reducing the density of...
4172025 Process for secondary recovery of bitumen in hot water extraction of tar sand  
It has been found that tank-type air flotation cells are more efficient, when treating hot water process middlings containing in excess of about 3% bitumen, than trough-type air flotation cells....
4162956 Coal deashing process having improved solvent recovery techniques  
An improved coal deashing process wherein coal is mixed with a coal liquefaction process solvent, solubilized and flashed to provide a prepared mixture and the prepared mixture is mixed with a...
4149959 Coal liquefaction process  
A coal liquefaction chargestock is first treated with a gaseous mixture comprising at least 5 mole percent hydrogen sulfide at a temperature varying from about 343° C. to about 449° C. for at l...
4124485 Separation of solids from coal liquids with an additive blend  
Ash-containing solids are separated from coal liquid by adding a blend comprising alcohol and a light oil fraction to said coal liquid, followed by a solids-liquid separation step.
4119524 Coal deashing process having improved solvent recovery techniques  
An improved coal deashing process wherein coal is mixed with a first dissolving solvent, solubilized and flashed to provide a prepared mixture, and the prepared mixture is mixed with a second...
4102775 Conversion process for solid, hydrocarbonaceous materials  
Solid, hydrocarbonaceous materials, such as coal, are converted to valuable liquid and gaseous products by an efficient process comprising: (1) preparing a slurry from slurry oil, a hydrogenation...
4090958 Coal processing system for producing a stream of flowable insoluble coal products  
An improved coal processing system wherein a feed mixture (including coal, dissolving solvent, insoluble coal products and soluble coal products) at a first temperature level is separated in a...
4085029 Method for separating liquid and solid products of liquefaction of coal or like carbonaceous materials  
A method of improving the quality of slurry products taken from coal liquefaction reactors comprising subjecting the slurry to treatment with an alkaline compound such as caustic soda in the...
Matches 1 - 50 out of 86 1 2 >