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| Number | Title | Issue Date |
| 7390398 | Process for upgrading heavy oil using a highly active slurry catalyst composition Applicants have developed a new residuum full hydroconversion slurry reactor system that allows the catalyst, unconverted oil and converted oil to circulate in a continuous mixture throughout an entire reactor with no confinement of the mixture. The mixture is parti... | 06/24/2008 |
| 7087140 | Carbonizing waste processing apparatus A carbonizing waste processing apparatus is operable to rotate and heat a radiant tube for carbonizing waste therein so as to generate granular char and vapors from the waste, transfer waste into an upstream end of the tube, temporarily impede movement of the waste ... | 08/08/2006 |
| 7049922 | Method and apparatus for decreasing gassing and decay of insulating oil in transformers The invention deals with increasing the quality of insulating mineral oil in transformers, by providing an isolating layer of flowing nitrogen over the oil's surface to keep ambient air from combining or absorbing with or in the oil, also providing a kidney or filte... | 05/23/2006 |
| 7034193 | Method for purifying spent acid A method for purifying a spent acid catalyst from an acid catalyzed chemical reaction that generates a mixture of a product, spent add and tar, includes the steps of separating the mixture of product, spent acid, and tar into a product fraction and a spent acid frac... | 04/25/2006 |
| 7025822 | Asphalt mastic utilizing petroleum refinery waste solids An asphalt mastic is prepared by combining comminuted waste solids from a petroleum refinery with liquid asphalt that is either a hot asphalt or an asphalt emulsion. The resulting composition is similar in performance to Trinidad Lake Asphalt and is useful either on... | 04/11/2006 |
| 7022293 | Method and apparatus for processing a waste product A method and apparatus for processing a waste product and producing a synthesis gas is provided. The system includes a sealed, heated rotatable drum for preheating and preparing the waste material suitable for a plasma reactor, and processing the material in the rea... | 04/04/2006 |
| 7008528 | Process and system for continuously extracting oil from solid or liquid oil bearing material A process for continuously extracting oil from a solid or liquid oil-bearing material comprises (a) removing air from the extraction system, (b) introducing an inert gas into the extraction system at a pressure sufficient to maintain a normally gaseous solvent in li... | 03/07/2006 |
| 6972085 | Continuous coking refinery methods and apparatus A system for refining hydrocarbon containing materials in a continuous coking mode may provide a pyrolyzer (1) which may be inclined to effect a liquid seal between a liquid conduction environment (6) and a gaseous conduction environment (7). A ... | 12/06/2005 |
| 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 |
| 6673231 | Method for removing sludge in crude oil tank and recovering oil therefrom Disclosed is a method for removing sludge in a crude oil storage tank by use of thermal oil discharged from a distillation tower of an oil refinery, such as atmospheric residue, vacuum residue, or vacuum gas oil, and recovering oil having various applicat... | 01/06/2004 |
| 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 |
| 6245216 | Method for fluidizing tars Process for the preparation of an aqueous tar suspoemulsion by mixing a mixture including (a) a viscous tar composition formed from a tar, from inorganic solids and, optionally, from water, (b) water (W), (c) a surface-active agent (SA) exhibiting an HLB ... | 06/12/2001 |
| 6214236 | Process for breaking an emulsion A process for removing even tightly emulsified oil, water and solid emulsions by the application of a shear force sufficient to break the emulsion. In one particular application, a tank bottom sludge produced in the petroleum industry is treated with the ... | 04/10/2001 |
| 6204421 | Method of disposing of waste in a coking process A method for recycling a waste stream containing water and solids comprises (a) removing water from the waste stream to produce a second stream containing less than 60% by weight water, (b) drying the second stream to produce a waste feed charge containin... | 03/20/2001 |
| 6168708 | Method for recovery and recycling of hydrocarbon residue The present invention provides for a method for recovering and recycling a hydrocarbon residue from a petroleum material such as crude oil, where the hydrocarbon residue is a waxy solid material. The method comprises providing the hydrocarbon residue in a... | 01/02/2001 |
| 6120680 | Sludge liquefaction process and agents The invention involves the demulsification and liquefaction of hydrocarbon based sludges. A demulsifier and a liquefaction agent and methods of using the same are disclosed. In a preferred embodiment, the demulsifier contains a salt of DDBSA, polypropylen... | 09/19/2000 |
| 6117305 | Method of producing water slurry of SDA asphaltene Disclosed is a method of producing water slurry of SDA asphaltene by dispersing residue resulting from solvent deasphalting of petroleum vacuum residue produced in refineries, which has low viscosity even at a high solid concentration and is stable for a ... | 09/12/2000 |
| 6061383 | Method and apparatus for tuning polychlorinated biphenyl to harmless The present invention reduces generation of harmful substances through processing at lower cost for facilities and processing. According to the present invention, polychlorinated biphenyl and mixture of alumina oxide and silicon dioxide are mixed and emul... | 05/09/2000 |
| 6056882 | Process of breaking a sludge emulsion with a ball mill followed by separation A process for resolving even tightly emulsified oil, water and solid emulsions by the application of a sheer force sufficient to break the emulsion. In one particular application, a tank bottom sludge produced in the petroleum industry is treated with the... | 05/02/2000 |
| 6004519 | Aluminum promoted hydrogenation of alkylation sludge for aluminum chloride recovery The recovery of aluminum chloride from deactivated alkylation catalyst complexes by hydrogenation using hydrogen gas and an aluminum catalyst is disclosed. Using aluminum to catalyze the hydrogenation allows the reaction to proceed at a lower temperature ... | 12/21/1999 |
| 5998640 | Method for recovering oil from an oil-bearing solid material A method and apparatus for continuously removing oil from oil-bearing solids such as tar sands, vegetables or other solid materials using a solvent is provided. By providing a pressure differential between the exterior and interior of an oil extraction ch... | 12/07/1999 |
| 5928495 | Emulsion for heavy oil dilution and method of using same A surfactant which is capable being used to enhance accessing, storing and transporting carbonaceous materials such as crude oil or coal. The surfactant includes a dielectric surfactant having a predetermined range of pH. The dielectric surfactant may inc... | 07/27/1999 |
| 5922189 | Process to refine petroleum residues and sludges into asphalt and/or other petroleum products A process for significantly decreasing processing time, reducing capital costs, increasing yield, improving quality, and improving the safety of refining petroleum residues and sludges generated by the oil producers, refineries and re-refiners comprising ... | 07/13/1999 |
| 5914031 | Process in a reducing medium of chemically transforming complex chemical structures in a supercritical fluid Chemical transformation of complex chemical structures in a supercritical medium. The transformation of one or more chemical structures (20) involves at least one reduction reaction in a solvent (22) in the supercritical state. Application to the destruction o... | 06/22/1999 |
| 5897767 | Composition and process for the treatment and recovery of oil sludge A chemical composition is disclosed for use in the treatment and dissolution of oil sludge. The composition includes an anionic surfactant and a nonionic surfactant. In addition, a wetting agent is included along with an aromatic hydrocarbon carrier. Fina... | 04/27/1999 |
| 5888920 | Integrated process using in situ regenerated sulfuric acid as catalyst This invention discloses an integrated process of alkylation of olefins and regeneration of spent sulfuric acid. The alkylation of olefins may be replaced by nitration of toluene or by chlor-alkali process. The sulfuric acid is used as a catalyst or a abs... | 03/30/1999 |
| 5888375 | Method of treating oil sludge A method of treating oil sludge and an apparatus for carrying out same, whereby oil of good quality and inorganic harmless slag can be easily obtained. The method includes agitating oil sludge in an electrolytic tank so as to liquefy same, extracting wast... | 03/30/1999 |
| 5865956 | Process and apparatus for the conversion of sludges A process for the conversion of organic sludges, the process comprising the steps of: (a) feeding dried sludge through a first reactor (16); (b) heating the dried sludge in the first reactor (16) in the absence of oxygen for the volatilization of oil producing... | 02/02/1999 |
| 5853563 | Treatment of waste petroleum A treatment of waste petroleum (60,70) is disclosed by decoupling association of the petroleum component to contaminants by solvent treatment (92,94) of the petroleum component, followed by ultrasonic treatment (59,71), separating the contaminants by extr... | 12/29/1998 |
| 5847248 | Process and apparatus for the conversion of sludges A process for the conversion of organic sludges, the process comprising the steps of: (a) feeding dried sludge through a first reactor (16); (b) heating the dried sludge in the first reactor (16) in the absence of oxygen for the volatilisation of oil producing... | 12/08/1998 |
| 5814206 | Passive acid tar neutralization process An improved process for neutralization of acid tars employs a bulk neutralizing agent having a specific gravity greater than that of the acid tar to be neutralized. The bulk neutralizing agent, generally in excess of an amount sufficient to accomplish neu... | 09/29/1998 |
| 5711870 | Delayed coking process with water and hydrogen donors A residual oil feedstock comprises carbon residue measured according to ASTM D-4530. The feedstock is admixed with water/steam in an amount of 10 wt % to 30 wt % and optionally a hydrogen donor, such as methane and/or gas oil derived from recycle. The res... | 01/27/1998 |
| 5690811 | Method for extracting oil from oil-contaminated soil A method for extracting oil from oil-contaminated soil containing 2 to 5 wt. % oil, comprising contacting the oil-contaminated soil with a solvent in the presence of sonic energy in the frequency range of 0.5 to 2.0 kHz. Specifically, a solvent is first m... | 11/25/1997 |
| 5681449 | Process for producing oil from organic material-containing sludge An organic material-containing sludge is fluidized and is heat-treated at a high pressure in a reactor disposed underground to obtain an oil having a high calorific value. The heat treatment may be performed using an electrical energy, the terrestrial hea... | 10/28/1997 |
| 5656041 | Method for detoxifying coal-tar deposits In a process for detoxifying a coal-tar deposit, effective amounts of carbon and a calcium oxide containing substance are added at a mixing station to at least a portion of the coal-tar deposit. The reaction mixture thus formed is mixed at a temperature o... | 08/12/1997 |
| 5653865 | Method and apparatus for recovering the fuel value of crude oil sludge A method and apparatus for converting crude oil tank bottoms to a liquid fuel, which uses a powered cutting tool to break up crude oil sludge contained in an oil storage tank bottom, with injection of cutter stock to facilitate break up of the sludge, an ... | 08/05/1997 |
| 5589599 | Pyrolytic conversion of organic feedstock and waste A self-sustaining system and process for converting organic waste feedstreams into usable solid and gas end products includes a plurality of interconnected retorts, an apparatus for flash pyrolyzing the feedstream to form intermediate gas and solid produc... | 12/31/1996 |
| 5573656 | Process for converting acid sludge to asphalt A process for significantly decreasing the acid sludge settling time in waste oil recovery processes comprising the steps of heating used oil to a high temperature above 725 degrees Fahrenheit, cooling the heated oil, adding an oxidizing agent to the oil,... | 11/12/1996 |
| 5547655 | Recovery and regeneration of sulfuric acid Using generated active intermediates or species simultaneously to remove water and organic compounds from the spent sulfuric acid catalyst of the alkylation of olefins and alkanes is disclosed in this invention. Over 90% water and 95% organic compounds of... | 08/20/1996 |
| 5470455 | Process for converting acid sludge to intermediate sludge and soft and/or hard asphalt A process for converting the acid sludge produced by waste oil refineries into an intermediate sludge which can be used in the production of either soft, un-oxidized asphalt or hard, oxidized asphalt, and a process for converting the intermediate sludge i... | 11/28/1995 |
