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| Number | Title | Issue Date |
| 7419585 | Process for upgrading residua A process for upgrading a residua feedstock using a short vapor contact time thermal process unit comprised of a horizontal moving bed of fluidized hot particles. The residua feedstock is preferably atomized so that the Sauter mean diameter of the residua feedstock ... | 09/02/2008 |
| 7338924 | Oil-in-water-in-oil emulsion An oil-in-water-in-oil emulsion (O/W/O) comprising a first oil-in-water emulsion dispersed in a second oil, and a method of preparing the same. The O/W/O emulsion can be used as a drive fluid in an enhanced oil recovery process. The O/W/O emulsion of this invention ... | 03/04/2008 |
| 7186673 | Stability enhanced water-in-oil emulsion and method for using same A method for enhancing the stability of a water-in-oil emulsion pretreating at least a portion of the oil prior to emulsification. The pretreatment step may consist of adding polymers to the oil, biotreating the oil, photochemically treating the oil, or combinations... | 03/06/2007 |
| 7121339 | Solids-stabilized oil-in-water emulsion and a method for preparing same A solids-stabilized oil-in-water emulsion and a method for preparing the solids-stabilized oil-in-water emulsion. The oil-in-water emulsion is formed by combining oil, water, solid particles and a pH enhancing agent and mixing until the solid-stabilized oil-in-water... | 10/17/2006 |
| 7112311 | Cooling method of hydrotreating plant and cooling unit therefor A cooling method of a hydrotreating plant having a desulfurization section (1) including a furnace (12) for heating liquid to be processed, reactors (14, 15) for hydrotreating sulfur to generate hydrogen sulfide, a hydrogen sulfide absorber (... | 09/26/2006 |
| 6689925 | Conversion of drilling waste to fuel Drilling waste resulting from drilling processes of oil and gas wells using hydrocarbons based drilling fluids contains not only hydrocarbons but also the separated cuttings, and other organic and inorganic additives. This kind of waste contains a conside... | 02/10/2004 |
| 6547960 | Oil separating apparatus for oil containing substance and method therefor An oil component separating apparatus for an oil containing substance can solve a problem of inflammability and can separate oil component and solid substance simply at low cost. The oil component separating apparatus for a oil containing substance includ... | 04/15/2003 |
| 6549817 | Method for regulating centrifuges for dehydrating wastewater sludge, using fuzzy logic A process for regulating a centrifuge used for solid/liquid separation of sewage sludge commences by measuring the input variables of the operating point ot the centrifuge, the variables including 1) suspended matter content of the centrate; 2) the flow r... | 04/15/2003 |
| 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 containing Fe as a catalyst, comprising the steps of mixi... | 08/10/1999 |
| 5917102 | Device for depolymerizing used and waste plastics The invention relates to a device for depolymerizing used and waste plastics, comprising a closed reactor and a circulation system the mildly heating of the reactor contents connected to the reactor, as well as to a process for depolymerizing used and was... | 06/29/1999 |
| 5879541 | Apparatus and method for removing oil from oil-coated particles Particles of sand coated with oil are loaded into a housing (1). A fluidizing unit (3) is provided towards the bottom of the housing. The fluidizing unit fluidizes the particles and discharges them from the housing to a separator, such as one or more hydr... | 03/09/1999 |
| 5846314 | Process for treating a waste material resulting from an oil recovery from tar sands process A method of treating a dilute aqueous suspension of solid particulate material comprising waste material from a process for recovering petroleum from oil sand includes diluting the suspension with at least 75% of its own volume of water thereby to increas... | 12/08/1998 |
| 5605618 | Process for preparing nitrogen-containing isotropic pitch and nitrogen-containing isotropic pitch A process for preparing nitrogen-containing isotropic pitch, comprising the steps of mixing a petroleum heavy oil, a nitrating reagent and water to prepare a homogeneous dispersion, thereby contacting the petroleum heavy oil with the nitrating reagent in ... | 02/25/1997 |
| 5549831 | Method for processing chemical cleaning solvent waste A method for processing chemical cleaning solvent waste that combines evaporation, purification, and detoxification. The method is mobile and thus allows the processing to be done at the site of the cleaning where the entire processing can be completed. E... | 08/27/1996 |
| 5534137 | Process for de-ashing coal tar Described are novel processes for treating high-ash coal tars to produce coal tars which are suitable for distillation to form binder pitch. Preferred processes of the invention involve multi-stage centrifugations to reduce ash and preferably also quinoli... | 07/09/1996 |
| 5492618 | Recovery of hard acids and soft bases from decomposed coal An improved process for recovering hard acids and soft bases used to decompose coal in which finely divided coal particles are contacted with a hard acid in the presence of a soft base at temperatures of from 0° to 100° C., said hard acid being characte... | 02/20/1996 |
| 5489376 | Recovery of hard acids and soft bases from decomposed coal An improved process for recovering hard acids and soft bases used to decompose coal in which finely divided coal particles are contacted with a hard acid in the presence of a soft base at temperatures of from 0° to 100° C., said hard acid being characte... | 02/06/1996 |
| 5489377 | Recovery of hard acids and soft bases from decomposed coal An improved process for recovering hard acids and soft bases used to decompose coal in which finely divided coal particles are contacted with a hard acid in the presence of a soft base at temperatures of from 0° to 100° C., said hard acid being characte... | 02/06/1996 |
| 5337965 | Method and apparatus for recycling asphalt based roofing material A method and apparatus for recycling asphalt based roofing material which typically comprises a body of asphalt and fiber, with aggregate on and adhered to the asphalt. The asphalt bodies, with aggregate, are subjected to action to separate or disengage t... | 08/16/1994 |
| 5298157 | Coal depolymerization utilizing hard acid/soft base A process for depolymerizing coal at low temperatures by contacting finely divided coal with a hard acid and soft base.... | 03/29/1994 |
| 5296133 | Low ash coal products from depolymerized coal A process for preparing a low ash coal wherein coal is depolymerized at low temperature by contacting finely divided coal with a hard acid and soft base, and extracting the depolymerized coal to remove mineral contaminants.... | 03/22/1994 |
| 5294349 | Coal depolymerization and hydroprocessing A process for hydroprocessing coal to hydrocarbon oils wherein coal is depolymerized at low temperatures by contacting finely divided coal with a hard acid and soft base. The depolymerized coal is then hydroprocessed to hydrocarbon oils by forming a mixtu... | 03/15/1994 |
| 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; separating a gaseous content from the products resulting from the ... | 12/14/1993 |
| 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 phase comprising hydrocarbon material from the coal, and su... | 05/05/1992 |
| 5091076 | Acid treatment of kerogen-agglomerated oil shale A kerogen-agglomerated oil shale is contacted with an acid-containing solution prior to economically upgrade the oil shale prior to retorting. The kerogen is agglomerated by contacting the oil shale with a two phase mixture of an organic liquid and water ... | 02/25/1992 |
| 5041209 | Process for removing heavy metal compounds from heavy crude oil A process is provided for removing heavy metal compounds from heavy crude oil by mixing the heavy crude oil with tar sand; preheating the mixture to a temperature of about 650° F.; heating said mixture to up to 800° F.; and separating tar sand from the ... | 08/20/1991 |
| 5041210 | Oil shale retorting with steam and produced gas A process for retorting oil shale in a vertical retort. Recycle gas containing steam and produced gas is separated from the retort off-gas and used to heat the oil shale. The steam is present in amount by volume of the recycle gas of at least 40% and pref... | 08/20/1991 |
| 5013428 | Recovery of oil from a shale containing the same Enhanced recovery of oil from an oil-containing particulate shale sludge is achieved by contacting the sludge with a light hydrocarbon solvent fraction, obtained from the processing of oil derived from the shale, in the presence of water to form an oil-so... | 05/07/1991 |
| 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 to liberate an effluent stream of dust laden hydrocarbons... | 04/23/1991 |
| 4994175 | Syncrude dedusting extraction A method for dedusting synthetic oil is disclosed. A feed of dust-laden synthetic oil is dissolved in a non-polar solvent of at least one alkane containing from 4 to 7 carbon atoms and aggregates of dust material are formed. The dissolved dust-laden synth... | 02/19/1991 |
| 4944867 | Process to secure oil, gas, and by-products from pyrobetuminous shale and other matter impregnated with hydrocarbons The process for obtaining oil, gas and other products from pyrobituminous shales and the like includes introducing crushed shale into a retort and contacting the crushed shale in the top portion of the retort with a stream of retort gases. Hot gases are i... | 07/31/1990 |
| 4919792 | Clarification of slurry oil A process for removing catalyst fines from slurry oil is disclosed. A settling reagent, such as coal, alumina, or coke, is added to a fines containing heavy oil bottoms product from a fractionator downstream of a catalytic cracking unit. The settling reag... | 04/24/1990 |
| 4888108 | Separation of fine solids from petroleum oils and the like Dispersed solids, particularly fine peptized hydrophobic solids, present in some petroleum oils, bitumen solutions or concentrates, heavy oils and the like, may be removed by distributing an additive selected from resorcinol, catechol, formic acid, maleic... | 12/19/1989 |
| 4863586 | Process for recovery of low-temperature carbonization oil In a first condensation stage (which is on the rising current end of the low-temperature carbonization drum and the equipment for which is integrated) quenching is done with a cooled low-temperature carbonization oil fraction containing solids. Simultaneo... | 09/05/1989 |
| 4842715 | Novel technique for rendering oily sludges environmentally acceptable A process is disclosed for separating an organic material from a composition comprising said organic material intermixed with particulate solids, the process comprising advancing a light hydrocarbon fluid through said particulate solids at an effective ra... | 06/27/1989 |
| 4812225 | Method and apparatus for treatment of oil contaminated sludge Oil containing sludges are treated for the recovery of oil therefrom to render the resultant sludge disposable, by a process of conditioning the sludge to destabilize the emulsified phase thereof, centrifuging the destabilized sludge to obtain a solids-ri... | 03/14/1989 |
| 4773988 | Arsenic removal from shale oil by addition of basic materials Arsenic is removed from shale oil by the addition of one or more basic materials to the shale oil.... | 09/27/1988 |
| 4737267 | Oil shale processing apparatus and method A method and apparatus for the recovery of bitumen oils from oil shale. The method comprises crushing the oil shale to a predetermined particle size and mixing with an organic solvent to form a slurry. The slurry is then subjected to supercritical tempera... | 04/12/1988 |
| 4705622 | Process for dedusting shale-oil Disclosed is a process for removing entrained mineral matter particles from shale-oil by contacting the shale-oil with an aqueous ammonium or phosphonium salt solution having a pH of about 0.5 to 8 and at a temperature from about 0° C. to 100° C.... | 11/10/1987 |
| 4702820 | Pretreatment by alkaline wetting and holding at temperature of natural materials having an argillaceous gangue containing combustible elements Process for pretreatment at atmospheric pressure or a pressure close to atmospheric pressure by alkaline wetting and holding at temperature of natural materials whose gangue comprises argillaceous compounds capable of forming a stable plastic suspension i... | 10/27/1987 |
