| Patents for C10G 21 - Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (2,651) |
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| 03/30/1988 | EP0261700A1 Process for extracting paraffins from their mixtures with parraffinsulphonic acids |
| 03/30/1988 | CN87105863A Decalcification of hydrocarbonaceous feedstocks using sequestering agents |
| 03/23/1988 | CN87105306A Process for removing paraffins from their mixtures with paraffinsulphonic acids |
| 03/22/1988 | US4732664 Process for solid separation from hydroprocessing liquid product |
| 02/24/1988 | EP0256940A1 Process for deasphaltizing a heavy hydrocarbon feedstock |
| 02/16/1988 | CA1232859A1 Two-feed oil extraction and demetallization process |
| 02/11/1988 | WO1988000849A1 Reclassification of electrical apparatus contaminated with pcb |
| 02/10/1988 | EP0255747A1 Process for separating a fluid feed mixture hydrocarbon oil and an organic solvent |
| 01/27/1988 | EP0254368A1 Process for extracting paraffins from their mixtures with alkanesulphonic acids |
| 01/27/1988 | EP0254359A1 Process for separating a fluid mixture containing hydrocarbons and an organic solvent |
| 01/26/1988 | CA1231985A1 Selective extraction solvent recovery using regenerated cellulose membrane under reverse osmosis conditions |
| 01/12/1988 | US4719000 Desulfurization, supercritical temperature and pressure |
| 01/07/1988 | EP0251838A1 Process for the separation of solvent from a hydrocarbon solvent mixture and apparatus for performing this process |
| 01/07/1988 | EP0251517A2 A method of removing impurities from n-methyl-pyrrolidone used for solvent extraction of lube oil fractions using activated alumina |
| 01/05/1988 | CA1231072A1 Solvent extraction |
| 12/29/1987 | US4715946 Process for deasphalting a hydrocarbon charge containing asphaltenes |
| 12/22/1987 | US4714793 Polymerization inhibition |
| 12/09/1987 | EP0248114A2 Process for the separation of aromatics from hydrocarbon mixtures with any concentration of aromatics |
| 11/25/1987 | EP0246956A1 Process for the elimination of asphaltenes from a hydrocarbon feedstock |
| 11/19/1987 | DE3715983A1 Verfahren zur desasphaltierung eines asphalthaltigen kohlenwasserstoffoels Method for desasphaltierung a asphaltic kohlenwasserstoffoels |
| 11/17/1987 | CA1229317A1 Treatment and separation of petroleums and related materials |
| 11/05/1987 | DE3615036A1 Process for rendering transformers reusable, which are contaminated with PCB and other residues damaging the environment |
| 11/04/1987 | EP0244277A1 Process for deasphalting a hydrocarbon oil |
| 10/22/1987 | WO1987006255A1 Precipitation of asphaltene |
| 10/21/1987 | EP0242129A1 Precipitation of Asphaltenes |
| 10/21/1987 | EP0241636A2 Process for the separation of phenols and bases from coal tar oils by extraction |
| 10/13/1987 | US4699667 Removing residual PCB S from transformers |
| 10/07/1987 | CN86107236A Sulfur removal from hydrocarbons |
| 09/29/1987 | CA1227437A1 Aromatic solvent upgrading using membranes |
| 09/23/1987 | EP0238136A1 Extraction process |
| 09/16/1987 | CN86107286A Decalcification method of hydrocarbon material using aminocarboxylic acid |
| 09/15/1987 | US4693810 Process for the separation of hydrocarbons from a mixed feedstock |
| 09/09/1987 | EP0236021A2 Process for upgrading diesel oils |
| 09/08/1987 | CA1226551A1 Method for the separation of aromates from a hydrocarbon mixture of optional aromate content |
| 09/02/1987 | EP0234878A2 Process for upgrading diesel oils |
| 09/01/1987 | US4690733 Solvent extraction and steam distillation for recovery of aromatics |
| 08/12/1987 | EP0231644A2 Method for extraction of aromatic hydrocarbons from oils using a solvent mixture |
| 08/11/1987 | US4686317 Process for removing oxygenated compounds or other impurities from hydrocarbon streams |
| 08/11/1987 | US4686028 Deasphalting, hydrogeantion |
| 08/11/1987 | US4685972 Solubilizing polychlorinated biphenyls in atransformer with a dielectric fluid |
| 07/22/1987 | EP0229458A1 Hydrocarbon solvent extraction process |
| 07/07/1987 | CA1223839A1 Method for the separation of aromates from hydrocarbon mixtures of optional aromate content |
| 07/02/1987 | DE3616120A1 Process for removing substances |
| 07/01/1987 | EP0227259A1 Sulfur removal from hydrocarbons |
| 06/23/1987 | US4675101 Depressurization |
| 06/16/1987 | US4673485 Process for increasing deasphalted oil production from upgraded residua |
| 06/09/1987 | US4671865 Concentrating then complexing with aliphatic carboxylic acid |
| 06/02/1987 | US4670151 Extraction using permselective membrane |
| 06/02/1987 | US4670104 Polar solvent dedusting |
| 05/21/1987 | DE3540425A1 Process for decontaminating transformers |
| 05/20/1987 | EP0222631A1 Process for de-asphalting with energy recuperation during the separation of de-asphalted oil from the de-asphalting solvent |
| 05/19/1987 | US4666562 Solvent recovery from solvent process material mixtures |
| 05/12/1987 | US4664786 Reduced energy consumption, steam distillation |
| 05/12/1987 | US4664783 Extractive distillation, energy efficient |
| 05/06/1987 | EP0221028A1 A process for the decontamination of apparatus or other materials contaminated by PCB or other toxic and noxious substances |
| 05/06/1987 | EP0220753A1 Process for the separation of solvents from hydrocarbons dissolved in said solvents |
| 05/05/1987 | US4663026 Solvent extraction and purification of acid soluble oil from an HF alkylation unit |
| 04/21/1987 | US4659443 Solvent extraction; electrolytic dehalogenation |
| 04/07/1987 | CA1220152A1 Process for production of light hydrocarbons by treatment of heavy hydrocarbons with water |
| 02/24/1987 | US4645589 Countercurrent extraction by water and a phosphorus compound |
| 02/17/1987 | US4643821 Integrated method for extracting nickel and vanadium compounds from oils |
| 01/06/1987 | US4634520 De-asphalting heavy crude oil and heavy crude oil/water emulsions |
| 01/06/1987 | US4634519 Process for removing naphthenic acids from petroleum distillates |
| 12/30/1986 | CA1215823A1 Extraction zone |
| 12/16/1986 | CA1215328A1 Membrane separation process |
| 11/26/1986 | EP0202371A1 Method of extractive separation, particularly of aromatic and non-aromatic components |
| 11/18/1986 | US4623444 Upgrading shale oil by a combination process |
| 11/12/1986 | EP0201364A1 Process for de-asphalting a hydrocarbon charge containing asphaltene |
| 11/05/1986 | EP0199892A1 Demetallization of heavy oils, heavy petroleum fractions and/or petroleum distillation residues |
| 10/21/1986 | US4618413 Method for extracting nickel and vanadium compounds from oils |
| 10/15/1986 | EP0197716A2 Process for the removal of solids from an oil and mixture useful therefor |
| 10/14/1986 | US4617126 Polysulfones |
| 10/01/1986 | CN86102355A Process for desasphalt of hydrocarbon charge consisting of asphaltene |
| 09/02/1986 | US4609457 Operation of continuous extraction process |
| 08/20/1986 | CN85109359A Improved method for replacing pcb-containing coolants in electrical induction apparatuswith substantially pcb-free dielectric coolants |
| 08/12/1986 | US4605489 Extracting nitrogen compounds, distillation, hydrotreatment |
| 07/30/1986 | EP0188698A2 Method for replacing PCB-containing coolant in electrical induction apparatus with substantially PCB-free dielectric coolants |
| 07/23/1986 | EP0187947A1 Solvent for refining of residues |
| 07/17/1986 | WO1986004082A1 Separation of aromatic and nonaromatic components in mixed hydrocarbon feeds |
| 07/16/1986 | EP0187479A2 Extraction of aromatics with ethyl acetoacetate |
| 07/15/1986 | CA1207699A1 Process for the solvent deasphalting of asphaltene- containing hydrocarbons |
| 07/09/1986 | EP0186982A2 Extraction of aromatics with N-cyclohexyl-2-pyrrolidone |
| 07/02/1986 | CA1206907A Method of removing polychlorinated biphenyl from oil |
| 06/24/1986 | US4596655 Distilling mixture with N-(aminoalkyl)piperazine, separating |
| 06/17/1986 | US4595491 Extractive distillation using as selective solvent N-substituted morpholine |
| 06/11/1986 | EP0184375A1 Solvent extraction and purification of acid soluble oil from an HF alkylation unit |
| 06/10/1986 | US4594148 Extraction of aromatics with ethyl acetoacetate |
| 06/10/1986 | CA1205770A1 Recovery of solvent from a hydrocarbon extract |
| 06/03/1986 | US4592831 Solvent for refining of residues |
| 06/03/1986 | CA1205495A1 Method for the solvent extraction of polychlorinated biphenyls |
| 05/27/1986 | CA1204915A1 Extraction zone tray |
| 05/20/1986 | CA1204695A1 Process for purifying hydrocarbonaceous oils |
| 05/13/1986 | CA1204402A1 Solvent dewaxing with methyl tertiary butyl ether |
| 05/06/1986 | US4586986 Method of recovering pure aromatic substances |
| 04/29/1986 | US4585567 Purification of fluorinated lubricants free from hydrogen |
| 04/16/1986 | EP0177648A1 Method of removal of corrodants from NMP solvent by contacting with sacrificial metal |
| 04/15/1986 | US4582591 Process for the separation of resinous substances from coal-base heavy oils and use of the fraction obtained |
| 03/11/1986 | CA1201660A1 Process for the separation of a liquid mixture |
| 03/05/1986 | EP0173574A2 Asphalt separation and heavy oil extraction/treatment |
| 03/04/1986 | CA1201283A1 Method for reducing the content of halogenated aromatics in hydrocarbon solutions |