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| Number | Title | Issue Date |
| 7976699 | Distillation apparatus and method of use A method and apparatus is provided for distilling and processing chemicals. The apparatus is particularly suited for processing and distilling difficult to distill compounds, and is capable of producing diesel fuel and other products from used oil at a quality level... | 07/12/2011 |
| 7267760 | Method of removing contaminants from used oil In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorganic or orga... | 09/11/2007 |
| 7255785 | Apparatus and process for treatment of waste oils An apparatus and a process for reclaiming fuel oils from waste oils. The apparatus and process is characterized in that waste oils are thermally cracked by combination of high pressure and vacuum in a sequence at high temperature. However, rapid thermal cracking is ... | 08/14/2007 |
| 7241377 | Salt bath refining A process for heating thermally unstable or difficult to heat liquid feeds, e.g., used lubricating oil (ULO) to dehydrate and/or recover distillable components therefrom, is disclosed. The liquid feed is heated by direct contact heat exchange with molten salt, prefe... | 07/10/2007 |
| 7226533 | Process for re-refining used oils by solvent extraction A process to re-refine used petroleum oils by extraction with aliphatic solvents, wherein after eliminating the extract solvent, the process consists of the following treatments, (a) flash, continuous vaporization, at atmospheric pressure or near atmospheric pressur... | 06/05/2007 |
| 7208079 | Process for the treatment of waste oils A process for the treatment of waste oil comprises the steps of (a) supplying a stream of the waste oil to a dehydrator to dehydrate the waste oil and obtain a stream of dehydrated waste oil; (b) supplying the stream of dehydrated waste oil to a fractionated distill... | 04/24/2007 |
| 7198715 | Device for separating fluid mixtures A device for separating fluid mixtures, in particular for separating water from oil, includes a vacuum container (10) with several sub-chambers (26, 44, 40). At least one liquid constituent of the fluid mixture can be transported from the vacuum contai... | 04/03/2007 |
| 7153394 | System to isolate dianhydrides A process to isolate dianhydride from an exchange reaction comprises extracting a bisimide/anhydride exchange reaction aqueous phase with an organic solution comprising an exchange catalyst at a first temperature and pressure to form an extracted aqueous phase compr... | 12/26/2006 |
| 7150822 | Five degrees for separation A process for heating thermally unstable or difficult to heat liquid feeds, e.g., used lubricating oil (ULO) to dehydrate and/or recover distillable components therefrom, is disclosed. The liquid feed is heated by direct contact heat exchange with molten metal, pref... | 12/19/2006 |
| 7150793 | Method of reducing materials contained in juice A process system that uses a reduced amount of lime or other base to clarify or purify juice obtained from plant material such as sugar cane, sugar beets, or sweet sorghum. Specifically, apparatus and methods to reduce volatile materials in juice providing a product... | 12/19/2006 |
| 7127959 | Process for assessing inhibition of petroleum corrosion The present invention is an apparatus for simulating corrosion activity in liquid and vapor/condensate corrosion environments. The apparatus includes a container, including a lower region containing the liquid and an upper region, including a condenser, a heater for... | 10/31/2006 |
| 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 |
| 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 |
| 6958107 | Cyclonic evaporator A method and apparatus for separating the components of a feed material prior to or simultaneously with at least partially vaporizing one of the components is described. The apparatus comprises at least one inlet (8) for admitting the feed material (10... | 10/25/2005 |
| 6929737 | Method of removing contaminants from petroleum distillates In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorganic or orga... | 08/16/2005 |
| 6841061 | Antigelling agent for hydrocarbon mixture containing conjugated diene and method of preventing clogging of apparatus for separating and purifying the mixture An Anti-gelling agent for a hydrocarbon mixture containing a conjugated diene, which comprises (a) at least one compound selected from the group consisting of compounds having an NO radical in the molecule, and precursor compounds capable of forming an NO radical, (... | 01/11/2005 |
| 6759438 | Use of oxygen analysis by GC-AED for control of fischer-tropsch process and product blending Methods for producing a substantially paraffinic Fischer-Tropsch product or a blended Fischer Tropsch product comprising a selected oxygenate concentration, and if required, a selected oxygenate concentration of specific individual oxygenates, are disclosed. The met... | 07/06/2004 |
| 6712954 | Method for reprocessing waste oils, base oils obtained according to said method and use thereof The invention relates to a method for reprocessing waste oils and producing high-grade base oils, whereby waste oil is treated by means of distillation, thin-film evaporation in a high vacuum, optional fractionation for separation into layers of different viscositie... | 03/30/2004 |
| 6579442 | Methods and compositions for inhibiting polymerization of vinyl monomers Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of nitroxyl compounds and aliphatic amines are effective at inhibiting the polymerization of vinyl monomers under both processing and storage conditio... | 06/17/2003 |
| 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 |
| 6440298 | Method of reclaiming waste oil An apparatus and a method are provided reclaiming a useful oil product from waste oil, such as used lubricating oil. The apparatus comprises an oil feed means, a boiler, a heater and a separating means. The heater is used to heat the waste oil in the boil... | 08/27/2002 |
| 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 |
| 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 |
| 6398948 | Method of removing contaminants from used oil In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorga... | 06/04/2002 |
| 6346173 | Method for the vacuum distillation of a liquid product, particularly oil stock, (variants) and system for realizing the same The invention essentially relates to a method for vacuum distillation of liquids that includes feeding a polar liquid into a vacuum-producing liquid-gas jet apparatus as a motive liquid if evacuation of a nonpolar gas-vapor medium is to be effected. Furth... | 02/12/2002 |
| 6320090 | Method of removing contaminants from petroleum distillates Polynuclear aromatic hydrocarbons (PAHs) and other contaminants are removed from petroleum distillates by mixing a solvent with petroleum distillate to extract the contaminants therefrom. The solvent is recovered and distilled to separate the contaminants... | 11/20/2001 |
| 6287455 | Purifier for lubricating oil or hydraulic oil The present invention provides a means of removing water, antifreeze and fuel from lubricating or hydraulic oil by evaporating these impurities and venting them out of the purifier. The oil is heated by heat of an exposed horizontal heating wand within th... | 09/11/2001 |
| 6277247 | Operation method of a plant for distilling liquid products and plant for realizing the same The invention pertains to the field of the petrochemical industry. The invention essentially relates to a system and method that includes feeding of a liquid having molecular weight more than 100 (in atomic mass units) into a nozzle of an ejector as a mot... | 08/21/2001 |
| 6238551 | Method of removing contaminants from petroleum distillates In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorga... | 05/29/2001 |
| 6117309 | Method of rerefining waste oil by distillation and extraction A process for recovering a base oil of lubricating viscosity from used oil in which, following optional pretreatment, used oil is re-refined by distilling it in distillation apparatus having multiple theoretical plates. Impurities are then extracted from ... | 09/12/2000 |
| 6106699 | Process for de-chlorinating and de-fouling oil The invention is directed to a process of reducing the chlorine content of oil as well as its propensity to foul during subsequent distillation processes. The process heats the oil to a temperature in the range of 400 to 700 F and contacts the oil with a ... | 08/22/2000 |
| 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 |
| 6004434 | Method of recycling cleaning solvent A method of treating cleaning solvent used to clean mechanical parts. The method includes adding to the cleaning solvent a treating composition selected from the group of C5 -C14 alcohols, C2 -C8 dials, C10... | 12/21/1999 |
| 5980694 | Apparatus for the purification of water contaminated with oil An installation for cleaning oil-polluted water, in particular at oil and gas production plants, is provided with a distillation column having a polluted water feed and at least one contact packing above which the outlet of the polluted water feed is loca... | 11/09/1999 |
| 5976357 | Purification of oil The present invention relates to a method for purification of oil which is contaminated with particles of random density and/or water. A collection polymer or polymer mixture which is insoluble in oil and liquid at room temperature and which has a density... | 11/02/1999 |
| 5965785 | Amine blend neutralizers for refinery process corrosion This invention relates to inhibiting corrosion in systems of condensing hydrocarbons which contain water and chlorides, and, more particularly, in the overhead of crude oil atmospheric pipestills, with blends of amines. Preferred blends are 2-amino-1-meth... | 10/12/1999 |
| 5885444 | Process for converting waste motor oil to diesel fuel A process for thermally cracking waste motor oil into a diesel fuel product is provided. The thermal cracking process uses low temperature cracking temperatures from 625° F. to 725° F. with ambient pressure to generate a column distilled fraction of die... | 03/23/1999 |
| 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 |
| 5814207 | Oil re-refining method and apparatus A method and apparatus for re-refining used oil, in which the used oil is processed in at least one cyclonic vacuum evaporator comprising a void evaporation chamber (4) into which feedstock is tangentially injected, and in which a fraction of the feedstoc... | 09/29/1998 |
| 5795462 | Apparatus and method for reclaiming useful oil products from waste oil Apparatus for reclaiming a useful oil product has an evaporation chamber, including an inlet for the waste oil, and an outlet for the vaporized oil, as a useful oil product. Burners are provided for heating the evaporation chamber to vaporized oil from th... | 08/18/1998 |
