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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 |
| 6855244 | Process for reducing coke agglomeration in coking processes In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for mitigating filter fouling from a coker gas oil by using a pusher ... | 02/15/2005 |
| 6830677 | Process for reducing coke agglomeration in coking processes In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for mitigating filter fouling from a coker gas oil wherein an oxygen ... | 12/14/2004 |
| 6746567 | Microstructured surface film assembly for liquid acquisition and transport A film or tape has one of its major surfaces defined by microstructured features including a plurality of channels defined by spaced apart protrusions. The microstructured film is able to acquire liquids and to control the directional transport of such liquids for s... | 06/08/2004 |
| 6413414 | Process for separation of dewaxed lube oil into light and heavy products Methods and apparatus to separate a light lube stock product and a heavy lube stock product from heavy dewaxed lube oils are described which maintain product specifications while utilizing conventional refinery equipment. The heavy dewaxed lube oil stream... | 07/02/2002 |
| 6348137 | Method and apparatus for fractional distillation An apparatus and a method for separating a liquid mixture by fractional distillation. The apparatus includes at least two chambers with a conduit from the lower portion of a chamber which contains liquid to the upper portion of an adjacent chamber, a sour... | 02/19/2002 |
| 6030524 | Refinery atmospheric pipestill with methanol stripping In an atmospheric pipestill stripping process where steam is utilized as the stripping gas to strip bottoms and side stream products, the improvement comprising utilizing methanol or a methanol and steam mixture as said stripping gas. In a refinery atmosp... | 02/29/2000 |
| 5916432 | Process for dispersing transition metal catalytic particles in heavy oil A transition metal salt, preferably ammonium heptamolybdate, is dissolved in water to provide a solution containing the dispersed catalyst precursor. The solution is atomized by passing it through an atomizing nozzle submerged in hot oil. The minute atomi... | 06/29/1999 |
| 5352336 | Removal of low-boiling fractions from high temperature heat transfer systems Water and organic low-boiling constituents in organic heat transfer fluids used to heat commercial processes are removed by introducing a gas such as nitrogen into a turbulent flow of the heat transfer fluid and separating gas which then contains low-boil... | 10/04/1994 |
| 5256258 | Removal of low-boiling fractions from high temperature heat transfer systems Water and organic low-boiling constituents in a organic heat transfer fluids used to heat commercial processes are removed by counter current stripping the fluid with a gas such as nitrogen. The gas containing low-boiling constituents is sent to a rectifi... | 10/26/1993 |
| 5225159 | Deodorization of sewage sludge-derived oils A method is provided for treating a sewage sludge-derived oil having a particular chemical composition, to reduce its odor. The method includes the first step of distilling the sewage sludge-derived oil to 150° C. to remove water and volatile organic com... | 07/06/1993 |
| 5141630 | Separation process employing two stripping gases A process for separating or stripping lighter components from a heavier hydrocarbon feedstock contaminated with or otherwise including light components. The separation is accomplished by introducing the feedstock into a column and allowing the feedstock t... | 08/25/1992 |
| 5105041 | Effluent separation method for aromatic hydrocarbon alkylation process A process for the production of alkylaromatic hydrocarbons uses a working fluid to reduce the costs of separating an unreacted aromatic feed substrate from aromatic hydrocarbon products. Unreacted aromatic substrate is combined with a light hydrocarbon, s... | 04/14/1992 |
| 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 |
| 5100536 | Method of processing substances A method of processing hydrocarbon substances including coal, heavy crude oil, and bitumen by hydrogenating the hydrocarbon substance with a gas containing from 20%-100% hydrogen at a pressure in the range of from 50 bar to 700 bar and at a temperature in... | 03/31/1992 |
| 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 |
| 4906338 | Method and apparatus for removing volatile organic constituents of gasoline from gasoline-water mixture, and from contaminated water at underground sites A method for removing the volatile constituents from gasoline and volatile organic chemicals from contaminated potable water when a fluid including gasoline-water mixture and when contaminated potable water is introduced into a vertical tower includes the... | 03/06/1990 |
| 4885424 | Effluent separation method for aromatic hydrocarbon alkylation process A process for the production of alkylaromatic hydrocarbons uses a light hydrocarbon recycle to reduce the costs of separating an unreacted aromatic feed substrate from aromatic hydrocarbon products. Unreacted aromatic substrate is combined with a light hy... | 12/05/1989 |
| 4853088 | Solar enhanced separation of volatile components from a liquid A process and apparatus for separating volatile components from a volatile-containing liquid by a stripping gas flowing countercurrent to the liquid. Separation of the volatile components is enhanced by heating the liquid with radiant solar energy and agi... | 08/01/1989 |
| 4822480 | Hydrocarbon product stripping Improved product stripping in a catalytic hydrodesulfurization (CHD) product stream is obtained by employing off-gas from the unit as a stripping medium. The compressed off-gas is introduced into the stripper below the stripper feed level. The stripper ma... | 04/18/1989 |
| 4565623 | Method for deasphalting heavy oils using a miscible solvent at a low treat ratio and a carbon dioxide antisolvent This invention deals with a method for deasphalting heavy oils by mixing the oil with a completely miscible solvent at a low treat ratio and then subjecting the resulting one phase mixture to a gaseous antisolvent, such as carbon dioxide, to separate the ... | 01/21/1986 |
| 4536283 | Integrated process for deasphalting heavy oils using a gaseous antisolvent The present invention relates to a process for the recovery of hydrocarbon oils from other heavier oils such as vacuum residua and, more particularly, to an improved process for deasphalting petroleum oils containing those asphalts. In one aspect of the i... | 08/20/1985 |
| 4465584 | Use of hydrogen sulfide to reduce the viscosity of bottoms streams produced in hydroconversion processes Coal, petroleum residuum and similar carbonaceous feed materials are subjected to hydroconversion in the presence of molecular hydrogen to produce a hydroconversion effluent which is then subjected to one or more separation steps to remove lower molecular... | 08/14/1984 |
| 4457837 | Efficiency addition of ammonia to petroleum fractionation units A nonpolluting process for neutralizing corrosive acid components in the overheads of petroleum distillation units is disclosed. In the process, ammonia is added to said units and carried overhead. The overhead is condensed to yield hydrocarbon phase and ... | 07/03/1984 |
| 4424117 | Hydrostripping process of crude oil Hydrogen partial pressure in the distilled vapor phase in a stripper is maintained sufficienty to allow a smooth distillation processing whereby an efficient crude oil stripping is performed. The distillate overhead thus produced is maintained at a temper... | 01/03/1984 |
| 4127393 | Method and apparatus for vaporizing hydrocarbon based liquids Apparatus and a process are provided whereby constituents of liquid mixtures eg non-distillate oils are vaporized under non-decomposing conditions in the presence of gases. Liquid components form a stream comprising the gas, vaporized and liquid constitue... | 11/28/1978 |
