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| Number | Title | Issue Date |
| 7060865 | Recovery of C4 olefins from a product stream comprising C4 olefins, dimethyl ether and C5+ hydrocarbons Disclosed is a process for removing DME from a stream containing C4 olefins. The process includes providing a first stream comprising C4 olefins, C5+ hydrocarbons, DME, and methanol. The first stream is separated into a second stream comprising the C4 olefins and th... | 06/13/2006 |
| 7045038 | Process for treating waste oil There is disclosed a burnable used oil fuel product by the process comprising: (a) obtaining a used oil sample having at least 1% (by weight) aqueous substances; (b) heating the used oil sample to a temperature of ... | 05/16/2006 |
| 6805062 | Apparatus and method for reclaiming useful oil products from waste oil including hydrogen injection An apparatus and method for reclaiming a useful oil product, from waste oil provides an evaporation chamber in which waste oil is heated and vaporized, preferably at a temperature which causes some cracking of the oil. Hydrogen is injected into the vaporized oil, so... | 10/19/2004 |
| 6447672 | CONTINUOUS PLURAL STAGE HEATED VAPOR INJECTION PROCESS FOR RECOVERING LUBE OIL BASE STOCKS FROM USED MOTOR OIL FORMULATIONS, AND ASPHALT BLEND COMPOSITIONS CONTAINING USED MOTOR OIL BOTTOMS FROM SAID PROCESS A continuous, hot vapor injection process and apparatus is provided for recovering lube oil base stocks from used lubricating oil containing distillable liquid hydrocarbons and water. Also disclosed is an asphalt blend composition containing an asphalt co... | 09/10/2002 |
| 6402938 | Vaporization of used motor oil with non-hydrogenating recycle vapor Used Motor Oil is re-refined by direct injection of a superheated, non-hydrogenating recycle vapor. The process operates at low pressures, preferably from atmospheric--10 atmospheres absolute. Preferably a significant amount of the energy required to vapo... | 06/11/2002 |
| 6402937 | "Pumped" recycle vapor A process for the direct contact heating and vaporization of UMO is disclosed. A superheated, but condensable, vapor heats and vaporizes distillable liquid hydrocarbons from a waste motor oil stream, producing an overhead vapor fraction of injected superh... | 06/11/2002 |
| 6090273 | Process to remove ash-forming contaminants from wet used oil Used lubricating oil containing unacceptable levels of moisture and ash-forming contaminants is dried and clarified by a process that includes flash drying, heat treating at a temperature within the range of 600°-700° F. for 2-5 hours, and cooling the h... | 07/18/2000 |
| 5423979 | Liquid decontamination apparatus In a multi-pass system for purifying oil or other liquids, an improved apparatus and method for mixing air with the contaminated liquid for separation after a phase change from liquid to gas. The contaminated liquid is drawn from a reservoir by a pump, fi... | 06/13/1995 |
| 5403475 | Liquid decontamination method In a multi-pass system for purifying oil or other liquids, an improved apparatus and method for mixing air with the contaminated liquid for separation after a phase change from liquid to gas. The contaminated liquid is drawn from a reservoir by a pump, fi... | 04/04/1995 |
| 5384037 | Integrated process for the production of distillate hydrocarbon A process for the production of a distillable hydrocarbon product stream from a first distillate hydrocarbon stream, a second distillate hydrocarbon stream and a waste lubricant stream by means of contacting the waste lubricant stream with a hot hydrogen-... | 01/24/1995 |
| 5314613 | Process and apparatus for oil decontamination A process and apparatus for the decontamination of oil includes providing a jet compressor having a converging section in which high velocity liquid oil compresses a source of atmospheric pressure gas, a central mixing section that intimately mixes the li... | 05/24/1994 |
| 5259945 | Process for recovery of tank bottom wastes A process for the recovery of tank bottom wastes employing a flash tank fed with hot, pressurized tank bottom wastes and separating a vapor component and heavier bottoms then fed to a stripping reactor along with hot gas producing an overhead vapor with a... | 11/09/1993 |
| 5102531 | Process for treating a temperature sensitive hydrocarbonaceous stream containing a non-distillable component to product a distillable hydrocarbonaceous product A process for treating a hydrocarbonaceous feed stream containing a non-distillable component to produce a distillable hydrocarbonaceous product and a heavy product comprising the non-distillable component while minimizing thermal degradation of the hydro... | 04/07/1992 |
| 5045179 | Process for the hydrogenation reprocessing of used oils The present invention provides a hydrogenation process for reprocessing used oil into secondary raffinates in the form of lubricating oils. In this process according to some embodiments of the invention, ecologically undesirable byproducts or waste materi... | 09/03/1991 |
| 5028313 | Process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component to produce a distillable hydrocarbonaceous product A process for treating a hydrocarbonaceous feed stream containing a non-distillable component to produce a distillable hydrocarbonaceous product and a heavy product comprising the non-distillable component while minimizing thermal degradation of the hydro... | 07/02/1991 |
| 4882037 | Process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component to produce a selected hydrogenated distillable light hydrocarbonaceous product A process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component and a distillable, hydrogenatable hydrocarbonaceous fraction to produce a selected hydrogenated distillable light hydrocarbonaceous product, a d... | 11/21/1989 |
| 4797198 | Process for the working up of salvage oil A process is disclosed for the working up of salvage oil, in which the salvage oil is subjected to an extraction under supercritical conditions. The halogen compounds contained in the produced extract are removed by catalytic hydrogenation. The extraction... | 01/10/1989 |
| 4681660 | Method and device for reclaiming fluid lubricants A method and device for reclaiming fluid lubricants, such as oil, which removes both solid and liquid contaminants from the fluid through efficient, adjustable filters and vacuum distillation.... | 07/21/1987 |
| 4522707 | Method for processing used oil A method for processing a used oil which comprises about 70 percent by weight spindle and neutral oils, about 5 percent by weight lower and higher boiling point oils, about 10 percent by weight useful additives and oxidation products, about 10 percent by ... | 06/11/1985 |
| 4406778 | Spent oil recovery process A process for reclaiming spent oil comprises the steps of removing water and light hydrocarbons, thermally treating the stripped oil, extracting it with a supercritical gas to insolubilize impurities and additives, separating the gas-rich fractions from t... | 09/27/1983 |
| 4381992 | Reclaiming used lubricating oil A novel process for the purification of used oil comprising removing the ash-forming components, then subjecting the oil to vacuum fractionation. A novel vacuum fractionation column is also disclosed.... | 05/03/1983 |
| 4255252 | Procedure for the reprocessing of used lubricating oils A method for reprocessing used lubricating oils is disclosed wherein the oil is dried, treated with finely dispersed sodium metal at elevated temperature, the remaining free or organically bound metal is decomposed by means of an active hydrogen containin... | 03/10/1981 |
| 4211638 | Naphtha stripping Naphtha is recovered from a soot-naphtha slurry by mixing the slurry with hot residual oil and feeding the mixture into a vapor/liquid contactor. Within the contactor, part of the naphtha is vaporized. The remainder is withdrawn from the base, heated and ... | 07/08/1980 |
| 4101414 | Rerefining of used motor oils Screened and drained used lubricating oil stock is predistilled in a steam stripping still for about 4 hours or more. The thus predistilled used oil then flows to an evaporator for a vacuum distillation at a temperature below the cracking temperature of t... | 07/18/1978 |
| 3977972 | Method and apparatus for reclaiming contaminated liquid Seal oil contaminated with H2 S has air or N2 bubbled therethrough for reducing the H2 S content of the liquid. The bubbling of the gas through the contaminated liquid is achieved by way of a novel two-state sparger unit s... | 08/31/1976 |
