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| Number | Title | Issue Date |
| 7575669 | Method of removal of carbonyl compounds along with acid gases from cracked gas in ethylene process A method for mitigating fouling in a wash unit used in a hydrocarbon cracking process wherein the fouling is due to the presence of polymers and deposits thereof formed by condensation of carbonyl compounds contained within a feed stream of the wash unit. In one emb... | 08/18/2009 |
| 7479217 | Series of hydroconversion and steam reforming processes to optimize hydrogen production on production fields The invention concerns a process for treating a hydrocarbon feed comprising a series of a first upstream process for hydrocarbon hydroconversion comprising at least one reaction chamber, the reaction or reactions occurring inside said chambers and employing at least... | 01/20/2009 |
| 7303733 | Gas/liquid separation system used in a hydrocarbonconversion process The present invention concerns a gas/liquid(s) separation system constituted by three different sections: a primary separator (1) for flows with a G/L in the range 0.1 to 10; a secondary separator (2) for flows with a G/L in t... | 12/04/2007 |
| 7276152 | Oxidative desulfurization and denitrogenation of petroleum oils A robust, non-aqueous, and oil-soluble organic peroxide oxidant is employed for oxidative desulfurization and denitrogenation of hydrocarbon feedstocks including petroleum fuels. Even at low concentrations, the non-aqueous organic peroxide oxidant is extremely activ... | 10/02/2007 |
| 7273542 | Process and apparatus for recovering olefins The present invention relates to a process and apparatus for recovering product from reactor effluent of a reactor for a hydrocarbon feedstream. An indigenous C4 stream is used as lean oil in a demethanizer, which facilitates significant cost and operatio... | 09/25/2007 |
| 7132044 | Device that comprises recycling to a separator a liquid effluent that is obtained from an absorber and is mixed with a feedstock A device comprising at least one absorber, at least one cold separator from which is extracted a gaseous phase that feeds the absorber, at least one recycling to said cold separator of at least a portion of liquid effluent that is obtained from the absorber and whic... | 11/07/2006 |
| 7128828 | Process for producing food grade wax A process for producing food grade wax which contains exceedingly low levels of nitrogen, sulfur and aromatic compounds. A waxy feedstock is firstly hydrotreated in a first hydrogenation zone to reduce the level of contaminants such as sulfur, nitrogen and aromatic ... | 10/31/2006 |
| 7087153 | Combination hydrocracking process for the production of ultra low sulfur diesel A catalytic hydrocracking process for the production of ultra low sulfur diesel wherein a hydrocarbonaceous feedstock is hydrocracked at elevated temperature and pressure to obtain conversion to diesel boiling range hydrocarbons. The resulting hydrocracking zone eff... | 08/08/2006 |
| 7074321 | Combination hydrocracking process for the production of low sulfur motor fuels An integrated hydrocarbon conversion process for the production of low sulfur fuels utilizing a hydrocracking zone, a diesel hydrodesulfurization zone, a fluid catalytic cracking zone and a gasoline hydrodesulfurization zone. The hydrocracking zone is used to conver... | 07/11/2006 |
| 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 |
| 7025872 | Process for obtaining a feedstock that can be used in an etherification unit Process for obtaining a hydrocarbon fraction that can be used as a feedstock of an etherification unit and that contains a small amount of diene compounds, nitrogen-containing compounds and sulfur-containing compounds, starting from an initial hydrocarbon feedstock ... | 04/11/2006 |
| 7005057 | Hydrocracking process for the production of ultra low sulfur diesel A catalytic hydrocracking process for the production of ultra low sulfur diesel wherein a hydrocarbonaceous feedstock is hydrocracked at elevated temperature and pressure to obtain conversion to diesel boiling range hydrocarbons. The resulting hydrocracking zone eff... | 02/28/2006 |
| 6968700 | Power systems A method for producing electrical power which, in certain aspects, includes producing a water/methanol mixture and feeding it to converting apparatus that produces a feed stream with hydrogen, carbon dioxide, and steam; recovering hydrogen from the feed stream and f... | 11/29/2005 |
| 6860985 | Process for increasing yield in coking processes The invention relates to a method for improving yield in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for regenerating filters employed to remove particulate matter from coker gas oil to improve coker ... | 03/01/2005 |
| 6787026 | Process for the production of high quality base oils This invention is directed to a process for hydroprocessing vacuum gas oils and other feeds in order to produce unconverted oil suitable for use as base oil feed for white oils, Group III oils, and BMCI (Bureau of Mines Correlation Index) ethylene plant feed. Ammoni... | 09/07/2004 |
| 6767191 | Method of compressing gaseous hydrocarbon-containing medium The invention relates to the field of petrochemistry, in particular to a method of compressing a gaseous hydrocarbon-containing medium, for example, different hydrocarbon gases including flares produced in the oil refining and petrochemical industries. A distillate ... | 07/27/2004 |
| 6709639 | Apparatus for purification of raw gasoline from catalytic cracking An apparatus for the purification of catalytic cracking gasolines containing dienic and/or acetylenic impurities, and mercaptans, said apparatus comprising at least one selective hydrogenation reactor 3 containing at least one fixed catalyst bed, and having a... | 03/23/2004 |
| 6645369 | Gas/liquid separation in a hydrocarbon conversion process A gas/liquid(s) separation system is constituted by three different sections: a primary separator (1) for flows with a G/L in the range 0.1 to 10; a secondary separator (2) for flows with a G/L in the range 10 to 50; a system (3) which limits the formatio... | 11/11/2003 |
| 6620311 | Process for converting petroleum fractions, comprising an ebullated bed hydroconversion step, a separation step, a hydrodesulphurization step and a cracking step For converting hydrocarbons: step a) treating a hydrocarbon feed with hydrogen in at least one three-phase reactor (1), containing ebullated bed hydroconversion catalyst; a step b) passing effluent from step a) to a separation zone (2) to recover a fracti... | 09/16/2003 |
| 6592749 | Hydrogen/hydrocarbon separation process, including PSA and membranes An improved process for separating hydrogen from hydrocarbons. The process includes a pressure swing adsorption step, a compression/cooling step and a membrane separation step. The membrane step uses a rubbery polymeric membrane selective for all C1 | 07/15/2003 |
| 6579069 | Method of compressing gaseous hydrocarbon-containing medium The invention relates to the field of petrochemistry, in particular to a method of compressing a gaseous hydrocarbon-containing medium, for example, different hydrocarbon gases including flares produced in the oil refining and petrochemical industries. A ... | 06/17/2003 |
| 6517705 | Hydrocracking process for lube base oil production A catalytic hydrocracking process for the production of lube base oil wherein a hydrocarbonaceous feedstock is contacted with hydrogen and a metal promoted hydrocracking catalyst in a hydrocracking reaction zone at elevated temperature and pressure to obt... | 02/11/2003 |
| 6451197 | Process for hydrocracking a hydrocarbonaceous feedstock A catalytic hydrocracking process wherein a hydrocarbonaceous feedstock and a liquid recycle stream having a temperature greater than about 500° F. and saturated with hydrogen is contacted with hydrogen and a metal promoted hydrocracking catalyst in a hy... | 09/17/2002 |
| 6303089 | Reclaiming of purge gas from hydrotreaters and hydrocrackers The invention is a process to recover a high pressure hydrogen-rich gas stream from a purge gas stream taken from a hydrotreater. This purge gas stream is admixed with synthesis gas that was the original source of the hydrogen to form a gaseous mixture. T... | 10/16/2001 |
| 6294080 | Hydrocracking process product recovery method A feed stream is first processed in a hydrotreating reaction zone and then the effluent is separated into three fractions in an augmented first high pressure separator. Controlled portions of the middle and heavy boiling point range hydrocarbon fractions ... | 09/25/2001 |
| 6264828 | Process, including membrane separation, for separating hydrogen from hydrocarbons Processes for providing improved methane removal and hydrogen reuse in reactors, particularly in refineries and petrochemical plants. The improved methane removal is achieved by selective purging, by passing gases in the reactor recycle loop across membra... | 07/24/2001 |
| 6217746 | Two stage hydrocracking process A two stage hydrocracking process is characterized by operation of the second hydrocracking zone at a reduced pressure, which is conducive to cracking the highly paraffinic effluent of the first hydrocracking zone. The process is also characterized by the... | 04/17/2001 |
| 6190540 | Selective purging for hydroprocessing reactor loop A process for hydroprocessing a fluid stream containing at least hydrogen and hydrocarbons. The process uses a hydrocarbon-selective membrane to reduce the concentration of hydrocarbons and contaminants in the hydrogen stream recycled to the hydroprocessi... | 02/20/2001 |
| 6190536 | Catalytic cracking process Processes and apparatus for providing improved catalytic cracking, specifically improved recovery of olefins, LPG or hydrogen from catalytic crackers. The improvement is achieved by passing part of the wet gas stream across membranes selective in favor of... | 02/20/2001 |
| 6187173 | Process for purification of raw gasoline from catalytic cracking A process and apparatus for treating raw gasoline from catalytic cracking to obtain gasoline with the qualities required for use as motor fuel comprises selective hydrogenation followed by stabilization and optional cooling of the effluent, then sweetenin... | 02/13/2001 |
| 6183628 | Process, including PSA and membrane separation, for separating hydrogen from hydrocarbons An improved process for separating hydrogen from hydrocarbons. The process includes a pressure swing adsorption step, a compression/cooling step and a membrane separation step. The membrane step relies on achieving a methane/hydrogen selectivity of at lea... | 02/06/2001 |
| 6179996 | Selective purge for hydrogenation reactor recycle loop Processes and apparatus for providing improved contaminant removal and hydrogen recovery in hydrogenation reactors, particularly in refineries and petrochemical plants. The improved contaminant removal is achieved by selective purging, by passing gases in... | 01/30/2001 |
| 6171472 | Selective purge for reactor recycle loop Processes and apparatus for providing improved contaminant removal and hydrogen reuse in reactors, particularly in refineries and petrochemical plants. The improved contaminant removal is achieved by selective purging, by passing gases in the reactor recy... | 01/09/2001 |
| 6165350 | Selective purge for catalytic reformer recycle loop Processes and apparatus for providing improved catalytic reforming, specifically improved recovery of reformate and hydrogen from catalytic reformers. The improvement is achieved by passing portions of the reactor effluent or streams derived from the reac... | 12/26/2000 |
| 6153804 | Production of cyclopentane and/or cyclopentene from partially hydrogenated pyrolysis gasoline A process for producing cyclopentane and cyclopentene by fractional distillation of partly hydrogenated pyrolysis gasoline, in which (a) partly hydrogenated pyrolysis gasoline is fractionally distilled in a first distillation column, (b) a C5 hydroc... | 11/28/2000 |
| 6124514 | Process for generating pure benzene from reformed gasoline A process is disclosed for generating pure aromatic compounds from a reformed gasoline which contains aromatic compounds, olefins, diolefin, and triolefins, which comprises the steps of: (a) selectively hydrogenating the olefins, diolefins and triolefins in th... | 09/26/2000 |
| 6096191 | Process for hydrocracking a hydrocarbonaceous feedstock A catalytic hydrocracking process wherein a hydrocarbonaceous feedstock and a liquid recycle stream having a temperature greater than about 500° F. and saturated with hydrogen is contacted with hydrogen and a metal promoted hydrocracking catalyst in a hy... | 08/01/2000 |
| 6017441 | Multi-step catalytic process for conversion of a heavy hydrocarbon fraction A process for converting a heavy hydrocarbon fraction comprises treating the hydrocarbon feed in a hydroconversion section in the presence of hydrogen, the section comprising at least one three-phase reactor containing at least one ebullated bed hydroconv... | 01/25/2000 |
| 6004453 | Hydrocracking of heavy hydrocarbon oils with conversion facilitated by recycle of both heavy gas oil and pitch A process for hydrocracking a heavy hydrocarbon oil feedstock, a substantial portion of which boils above 524° C. is described which includes the steps of: (a) passing a slurry feed of a mixture of heavy hydrocarbon oil feedstock and from about 0.01-4.0%... | 12/21/1999 |
| 5980730 | Process for converting a heavy hydrocarbon fraction using an ebullated bed hydrodemetallization catalyst A process for converting a heavy hydrocarbon fraction comprises treating the hydrocarbon feed in a hydroconversion section in the presence of hydrogen, the section comprising at least one three-phase reactor containing at least one ebullated bed hydroconv... | 11/09/1999 |
