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5815946 |
Method for dehydrating wet coal
A process is described whereby wet coal may be dehydrated and inhibited against rehydration by immersing in a bath of molten paraffin hydrocarbon for a sufficient period of time to evaporate and...
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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...
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4849021 |
Process for producting coal fillers
A process for producing coal fillers, which comprises the steps of: (a) carbonization step, which comprises carbonizing crushed coal particles having a particle size of not more than 10 mm and...
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4758332 |
Method of separating carbonaceous coal from an aqueous coal slurry
In a method of agglomerating carbonaceous coal comprising first agglomerating impurity liberated carbonaceous coal, from an impurity liberated coal slurry, with agglomerating oil to form open...
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4734206 |
Method for separating coal particles from an aqueous slurry
The invention relates, in one embodiment, to a method for separating coal particles from an aqueous slurry in which a multiple emulsion of oil in water is added to the aqueous slurry, the mixture...
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4648962 |
Method of breaking down chemisorption bond of clay-containing heavy oil water emulsions
Persistent chemisorption bonds of clay solids in clay-containing heavy oil and water emulsions, from oil sands, heavy oil or conventional oil wells, are broken down by mixing the emulsion with an...
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4484928 |
Methods for processing coal
Methods of converting raw coals into low ash fuels which are competitive with the heavier grades of petroleum-based fuels and into other products. The raw coal is comminuted in aqueous slurry until...
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4448585 |
Process for forming stable coal-oil mixtures
A process for forming a coal-oil mixture fuel slurry of enhanced stability comprising the steps of: (1) contacting an aqueous slurry of coal particles containing ash and iron pyrite mineral matter...
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4415337 |
Method for producing agglomerate particles from an aqueous feed slurry comprising finely divided coal and finely divided inorganic solids
An improved method for producing coal agglomerates from an aqueous feed slurry containing finely divided coal and finely divided inorganic solids, the method consisting essentially of mixing a...
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4396396 |
Deashing of coal by the oil agglomeration process
A method of deashing coal wherein the coal is wetted with hydrocarbon liquid to form agglomerates and the hydrophilic agglomerates are then separated from a water and ash phase to yield deashed...
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4389306 |
Process for removing ash from coal
A process for removing ash from coal comprising the steps of pulverizing the coal to fine particles, admixing water with the finely divided coal to prepare an ash-containing slurry of finely...
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4360422 |
Process for selectively aggregating coal powder
A process for removing ash from raw coal is described, comprising adding mineral oil to a slurry composed of a coal powder and water, granulating the coal by stirring to form granules, and...
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4355999 |
Process for agglomerating coal
This invention provides a method for reducing the amount of oil required to form coal-oil agglomerates comprising the steps of (a) forming a slurry of water and coal particles; (b) contacting the...
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4332593 |
Process for beneficiating coal
Mine run coal is pulverized and the extended surfaces of the coal particles are rendered hydrophobic and oilophilic by a chemical bonding and graft polymerization reaction with a water insoluble...
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4331447 |
Coal treatment for ash removal and agglomeration
Coal particles can be agglomerated with simultaneous ash removal therefrom by adding an oil fraction to an aqueous slurry of coal particles which contains a surfactant and optionally an inorganic...
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4326855 |
Process for beneficiating and stabilizing coal/oil/water fuels
A coal slurry containing 10-60% solids by weight is optionally first coarsely ground to about 20-80 mesh. Contaminant matter released thereby, may be separated by conventional means such as froth...
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4311488 |
Process for the upgrading of coal
In a process for upgrading an aqueous slurry of fine coal by agglomerating coal particles and separating the agglomerates from the slurry the proportioning of the amount of binder used to...
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4306883 |
Process for forming coal-oil mixtures under selected conditions of temperature and shear
An improved technique is provided for forming coal into a stabilized coal-oil mixture. Coal, in a fine mesh size, is admixed with oil, a monomeric compound, a reaction initiator and a reaction...
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4295858 |
Process for removing sulfur from coal
A process for reducing the sulfur and ash content of coal comprising the steps of: (1) contacting coal particles containing ash and iron pyrite mineral matter with a promoting amount of at least...
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4272250 |
Process for removal of sulfur and ash from coal
A process for reducing the sulfur and ash content of coal particles wherein coal particles are treated in an aqueous slurry with a minor amount of hydrocarbon oil to form coal-oil aggregates having...
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4255155 |
Process for agglomerating coal
This invention provides a method for reducing the amount of hydrocarbon oil required to form coal-oil agglomerates comprising the steps of (a) combining a first coal fraction comprising...
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4248698 |
Coal recovery process
Agglomeration type processes for recovering coal in which calcium oxide is employed to bring about an effective separation of pyritic sulfur from the coal.
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4248697 |
Oil agglomeration process
In methods for producing agglomerate particles from aqueous slurries containing from about 10 to about 40 weight percent solids, the solids comprising finely divided carbonaceous solids and finely...
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4217110 |
Process for preparing a suspension of particles in a hydrocarbon oil
Coal particles suspended in water are agglomerated with a binder and the agglomerates are separated from the water and disintegrated in a liquid fuel.
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4209301 |
Treatment of coal slurries
A process of agglomerating coal from coal fines is disclosed, wherein an aqueous slurry of coal fines is mixed with oil without intensive agitation, and thereafter the resulting coal fines...
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4204840 |
Process for removing sulfur from coal
A process for reducing the pyritic sulfur content of coal comprising the steps of: (1) contacting an aqueous slurry of water, an alkaline earth metal base and pyrite-containing coal at elevated...
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4153419 |
Agglomeration of coal fines
Process for the agglomeration of coal fines characterized by the staged addition of an aqueous emulsion of an oil fraction to an aqueous slurry of the fines.
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4126426 |
Agglomerating coal slurry particles
A process for preparing a solid load of coal from an aqueous slurry of coal particles by dividing the slurry into a first fraction containing relatively small particles and a second fraction...
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4080176 |
Process for the beneficiation of solid fuel
The invention relates to a process for the beneficiation of solid fuel, in which a heat treatment at elevated pressure is applied to an aqueous suspension of the solid fuel in a finely divided form...
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4021206 |
Separating coal particles from water
The invention relates to a process for separating coal particles in a coal/water slurry from water of the slurry by separating the larger coal particles with a relatively small quantity of water...
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3861885 |
CARBON BLACK FUEL PRODUCTION
The application discloses a method of production of nonpolluting ash free, sulfur free carbon black solid fuel from a polluting solid carbonaceous fossil fuel, such as coal or coal char. The coal...
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