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| Number | Title | Issue Date |
| 8142648 | Configurations and methods of RVP control for C5+ condensates Controlled RVP C5+ products are produced from feed gas in configurations and methods in which a heavier portion of the feed gas is fractionated into several streams having distinct RVP and in which a C5+ stream is produced from the lighter portion of the feed gas. T... | 03/27/2012 |
| 7582204 | Method for treating a hydrocarbon feedstock including resin removal The invention relates to a process, including removal of resins, for the treatment of a hydrocarbon charge, at least 80% of the compounds of which have a boiling point which is above or equal to 340° C., in which process: the char... | 09/01/2009 |
| 7527725 | Upgrading drip oil A method is disclosed for upgrading drip oil comprising subjecting the drip oil to multiple distillation steps to form a stream rich in aromatics and a separate stream rich in dicyclopentadiene. ... | 05/05/2009 |
| 7393992 | Method for working up crude 1,3-butadiene Sudstituted the abstract with a new abstract as follows: The invention relates to a continuous process for separation a mixture of hydrocarbons which has beenobtained by extractive distillation of C4 fraction useing a selective solvent and the hydrocarbon... | 07/01/2008 |
| 7390397 | Low sulphur diesel fuel and aviation turbine fuel A process for the production of a synthetic low sulphur diesel fuel and a low soot emission aviation fuel is disclosed. The process includes fractionation of a Low Temperature Fischer-Tropsch feedstock into a light kerosene fraction and a heaver diesel fraction in a... | 06/24/2008 |
| 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 |
| 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 |
| 7204928 | Process and apparatus for the fractional distillation of crude oil A process for the fractional distillation of crude oil, which comprises the steps of: feeding a continuous current of crude oil at 310–400° C. into a turbomixer comprising a tubular cylindrical body (1) provided with a rotor (9) formed with helicall... | 04/17/2007 |
| 7169267 | Method and device for carrying out the distillative separation of C cuts A process is proposed for the separation of C5+ cuts by distillation into a low-boiler (A), a medium-boiler (B) and a high-boiler fraction (C) in one or more dividing-wall columns (TK), in which a dividing wall (T) is arranged in the longitudinal directio... | 01/30/2007 |
| 7129387 | Low capital implementation of distributed distillation in ethylene recovery An apparatus for recovering ethylene from a hydrocarbon feed stream, where the apparatus is a single distillation column pressure shell encasing an upper region and a lower region. The upper region houses an ethylene distributor rectifying section and the lower regi... | 10/31/2006 |
| 7094937 | Compositions comprising cyclohexamantane Disclosed are compositions comprising C26H30 hexamantane, referred to herein as peri-condensed hexamantane, fully condensed hexamantane, and cyclohexamantane. These enriched cyclohexamantane compositions comprise at least 5 percent by weight cy... | 08/22/2006 |
| 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 |
| 7025875 | Diesel fuel reforming strategy A method of using a diesel reforming strategy is disclosed. The method comprises supplying diesel fuel to a fractional distillation device. The diesel fuel is fractionally distilled to produce a light fuel stream and a heavy fuel stream. The light fuel stream is ref... | 04/11/2006 |
| 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 |
| 6844480 | Method of separating dimethyl ether from an olefin stream This invention is directed to a method of removing dimethyl ether from an olefin stream. Dimethyl ether is removed from the olefin stream by first separating the olefin stream into a first stream comprising dimethyl ether and lighter boiling point compounds, and a s... | 01/18/2005 |
| 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 |
| 6755965 | Ethane extraction process for a hydrocarbon gas stream A process for ethane extraction from a gas stream based on turboexpansion and fractionation with no mechanical refrigeration is provided. The feed gas is sweetened and dehydrated by a conventional amine process and by a molecular sieve unit, to remove carbon dioxide... | 06/29/2004 |
| 6737557 | Hydrocarbon upgrading process A process for recovering DCPD from a hydrocarbon feedstock comprising introducing the hydrocarbon feedstock to a first column, recovering an overhead stream from the first column comprising C9− hydrocarbons, recovering a bottom stream from the first col... | 05/18/2004 |
| 6726835 | Fractionation for full boiling range gasoline desulfurization Savings in the processing of a naphtha boiling range feed containing a thiophene are achieved by fractionating the feed stream in a single dividing wall column to yield a C6-minus overhead stream, a side-draw containing the majority of the C6 a... | 04/27/2004 |
| 6723231 | Propene recovery Process to separate propene from gaseous fluid catalytic cracking products by performing the following steps: a) separating a feed mixture comprising the gaseous products, propene and other saturated and unsaturated hydrocarbons obtained in a fluid catalytic crackin... | 04/20/2004 |
| 6590132 | Separation of monomer from oligomer with lower bottoms temperature The process disclosed separates light olefins from heavy oligomers in a distillation column with an intermediary having a boiling point between the light olefin and the heavy oligomer in the column feed. The invention contemplates separating C4... | 07/08/2003 |
| 6576805 | Cat cracker gas plant process for increased olefins recovery The invention relates to a new process for more efficient separation and recovery of light olefins such as ethylene and propylene from a fluid catalytic cracking unit. The new process invention for recovering olefins from a mixture of cracked hydrocarbons... | 06/10/2003 |
| 6552242 | Fractionation in light paraffin isomerization process Fractional distillation performed to recover butane used as a desorbent component for adsorptive separation is integrated with the other fractionation of the raffinate stream of a C5 -C6 paraffin adsorptive separation zone. A single ... | 04/22/2003 |
| 6540907 | Fractionation for full boiling range gasoline desulfurization Savings in the processing of a naphtha boiling range feed containing a thiophene are achieved by fractionating the feed stream in a single dividing wall column to yield a C6 -minus overhead stream, a side-draw containing the majority of the C | 04/01/2003 |
| 6483002 | Integrated fractional distillation for adsorptive separation process Construction and operational costs of simulated moving bed adsorptive separation process units are reduced by recovering desorbent from both the extract and raffinate streams of the process in a single column. Both streams are fractionated to recover deso... | 11/19/2002 |
| 6395951 | Adsorptive separation product recovery by fractional distillation Construction and operational costs of recovering the extract or raffinate product of a simulated moving bed adsorptive separation process units are reduced by employing a dividing wall column to perform the separation. The raffinate or extract stream is p... | 05/28/2002 |
| 6358399 | Process for separating ethane and ethylene by solvent absorption and hydrogenation of the solvent phase A process and a device for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent (1) is absorbed in an absorption column (7) by a cooled solvent (9). At the bottom of the column, liquid phase (12) that contains t... | 03/19/2002 |
| 6348637 | Multifunction fractionation column for adsorptive separation processes Construction and operational costs of simulated moving bed adsorptive separation process units are reduced by recovering desorbent from both the extract and raffinate streams of the process in a single column. Both streams are fractionated in the same col... | 02/19/2002 |
| 6340429 | Process and device for separating ethane and ethylene from a steam-cracking effluent by solvent absorption and hydrogenation of the solvent phase A process for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent (1) is absorbed in an absorption column by a cooled solvent (9). At the bottom of the column, the liquid phase that contains the solvent and the... | 01/22/2002 |
| 6291734 | Integrated low pressure depropanizer/debutanizer column An integrated debutanizer and low pressure depropanizer column and process for separating a feed stream comprising C3 's, C4 's and C5 + is disclosed. A single shell houses a refluxed upper portion and a lower portion of t... | 09/18/2001 |
| 6271433 | Cat cracker gas plant process for increased olefins recovery The invention relates to a new process for more efficient separation and recovery of light olefins such as ethylene and propylene from a fluid catalytic cracking unit. The new process invention for recovering olefins from a mixture of cracked hydrocarbons... | 08/07/2001 |
| 6238549 | Process for converting hydrocarbons by treatment in a distillation zone associated with a reaction zone, comprising re-contacting a vapor distillate with the feed, and its use for hydrogenating benzine The invention concerns a process for converting a hydrocarbon feed in which said feed is treated in a distillation zone producing an overhead vapor distillate and a bottom effluent, associated with an at least partially external reaction zone comprising a... | 05/29/2001 |
| 6193849 | Fractionator with liquid-vapor separation means A fractionator has a fractionation vessel, a reactor effluent vapors inlet, a vapor feed contacting zone, a baffled contacting section above the vapor feed contacting zone, a tops section above the baffled contacting section, a heavy bottoms liquid hold-u... | 02/27/2001 |
| 6175049 | Process for the production of 1, 2-butadiene The production of 1,2-butadiene in purities of at least 85% becomes possible by means of a process in which a polymerization-inhibitor-containing C4 hydrocarbon fraction is subjected to at least one fractional distillation.... | 01/16/2001 |
| 6110325 | Apparatus and method for processing a feed An apparatus and method are provided in which a vaporizer vaporizes a liquid feed for introduction to a feed conversion unit such as a steam active reformer. A condenser condenses vaporized feed from the vaporizer when introduction of feed to the feed con... | 08/29/2000 |
| 6039771 | Formulation and method of preparation of energy fortified diesel fuel An energy fortified diesel fuel is provided containing a hydrocarbon additive wherein greater than 50% vaporizes at or above about 650° F. and diesel fuel of which about 90% of the diesel fuel vaporizes at or below about 640° F. or about 95% of the dies... | 03/21/2000 |
| 6027634 | Process for stable aqueous asphaltene suspensions A petroleum derived oil is subjected to propane deasphalting to yield a solid asphaltene residue. The residue is crushed to 425 micron diameter particle or less at a crushing temperature in the range of 77° F. to 122° F. The asphaltene particles are sus... | 02/22/2000 |
| 5961815 | Hydroconversion process The hydroconversion of heavy petroliferous stocks boiling mainly above 400° F. is carried out in a distillation column reactor where concurrently a petroleum stream is fed into a feed zone; hydrogen is fed at a point below said feed zone; the petroleum s... | 10/05/1999 |
| 5951853 | Refinery atmospheric pipestill with ammonia 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 ammonia or a ammonia and steam mixture as said stripping gas wherein when an ammonia... | 09/14/1999 |
| 5876591 | Process for the production of lube oil A process for fractionating a heavy hydrocarbon stream to produce a lube oil fraction having a constant, predetermined flash point. A liquid stream is removed from the fractionator, cooled in response to a fractionator top temperature and returned to the ... | 03/02/1999 |
