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| Number | Title | Issue Date |
| 8101812 | Extraction of hydrocarbons from hydrocarbon-containing materials Solvents and methods are provided for extracting a hydrocarbon fraction from a solid, semi-solid, liquid or viscous liquid hydrocarbon-containing material. ... | 01/24/2012 |
| 7723557 | Method for the preparation of linear alpha-olefins and reactor system therefore with improved disposal of high molecular weight oligomers The present invention relates to a method for processing high molecular weight oligomer waste products formed during the production of linear alpha-olefins by oligomerization of ethylene in a reactor in the presence of a solvent and a catalyst, characterized in that... | 05/25/2010 |
| 7442847 | Removing diamondoid components from natural gas at reduced temperatures A process for separating diamondoids and water from a gas stream that is being cooled to below atmospheric temperature is disclosed. The multi-component gas stream is contacted with a diamondoid solvent and a water solvent (glycol) simultaneously. The feed gas can b... | 10/28/2008 |
| 7402720 | Distillation process for removal of methyl acetylene and/or propadiene from an olefin stream The present invention provides a process for removing methyl acetylene and/or propadiene from a propylene stream and/or a butylene stream by two step fractionation. Methyl acetylene and/or propadiene avoids the use of a hydrogenation reactor and makes the methyl ace... | 07/22/2008 |
| 7361209 | Apparatus and process for preparing sorbents for mercury control at the point of use A system for treating a contaminated gas stream is provided that includes a comminution device 204 operable to effect size reduction of a plurality of sorbent particles and form a plurality of comminuted particles, a plurality of nozzles 224 distribute... | 04/22/2008 |
| 7326346 | High capacity regenerable sorbent for removal of arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/05/2008 |
| 7238844 | Olefin oligomerization This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is olig... | 07/03/2007 |
| 7183235 | High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/27/2007 |
| 7166248 | Reduced VOC emission alkenyl aromatic polymer foams and processes A method for producing an alkenyl aromatic polymer foam structure that comprises melting at least one alkenyl aromatic polymer resin. An effective amount of blowing agent mixture is dissolved in the at least one alkenyl aromatic polymer. The blowing agent mixture co... | 01/23/2007 |
| 7063793 | Apparatus and method for removing mercury and mercuric compounds from dental effluents The present invention is directed to processes for removing a contaminant from dental effluents and includes transporting a three-phase effluent through a suction line into a particle collection vessel, introducing a suction line cleaning solution which includes a r... | 06/20/2006 |
| 7048781 | Chemically-impregnated silicate agents for mercury control The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered sil... | 05/23/2006 |
| 6942840 | Method for removal and stabilization of mercury in mercury-containing gas streams The present invention is directed to a process and apparatus for removing and stabilizing mercury from mercury-containing gas streams. A gas stream containing vapor phase elemental and/or speciated mercury is contacted with reagent, such as an oxygen-containing oxid... | 09/13/2005 |
| 6914167 | Vent recovery system A process for absorbing propylene from a gaseous propylene oxide process purge stream wherein propane liquid is used to absorb the propylene. ... | 07/05/2005 |
| 6911570 | Method for fixating sludges and soils contaminated with mercury and other heavy metals The invention relates to a method, composition and apparatus for stabilizing mercury and other heavy metals present in a particulate material such that the metals will not leach from the particulate material. The method generally involves the application of a metal ... | 06/28/2005 |
| 6734332 | Process for enriching cis or trans-isomers in an olefin stream An olefin product rich in cis- or trans-isomers can be produced by reacting the mixed olefin feedstock with an linear polyaromatic compound such as anthracene under heat, then separating the unreacted olefin enriched in cis-isomer. The remaining linear unreacted pol... | 05/11/2004 |
| 6727399 | Process for separating linear alpha olefins from saturated hydrocarbons A process for separating linear alpha olefins from a feedstock containing linear alpha olefins, saturated hydrocarbons, internal olefins, branched olefins, and alcohols, in particular, from a Fisher-Tropsch stream is provided. ... | 04/27/2004 |
| 6676830 | Process for the desulfurization of a light FCC naphtha A process for the desulfurization of a light boiling range (C5 -350° F.) fluid catalytically cracked naphtha, which may be first subjected to a thioetherification to react the diolefins with mercaptans contained in it to form sulfides, is fed ... | 01/13/2004 |
| 6576806 | Process for separating C2-C3 olefins from industrial gases A process for treating a feedstock comprising olefins having an average carbon number ranging from 2-3.5, and non-olefinic compounds, said process comprising the following steps: a) contacting gaseous feedstock with a linear polyaromatic compound in a rea... | 06/10/2003 |
| 6559349 | Process for separating internal and alpha olefins from saturated compounds A process for separating and isolating saturated hydrocarbons from olefins, and in particular, a process for separating and isolating saturated hydrocarbons from olefins in a Fisher-Tropsch stream. The feedstock composition is contacted with linear polyar... | 05/06/2003 |
| 6545192 | Process for separating olefins from saturated hydrocarbons A process for separating and isolating olefins from saturated hydrocarbons, preferably in a Fischer Tropsch stream, by adducting the olefins with a linear polyaromatic compound and separating the adducts from the remainder, which comprises saturated hydro... | 04/08/2003 |
| 6531103 | Process for removing sulfur compounds from gas and liquid hydrocarbon streams The present invention provides a process for removing sulfur compounds including sulfur in the (-2) oxidation state such as mercaptans, dialkyl sulfides, carbonyl sulfide, hydrogen sulfide, thiophenes and benzothiophenes, from liquid or gas feed streams, ... | 03/11/2003 |
| 6447578 | Process for the removal of nitrogen contained in natural gas Process for the removal of nitrogen contained in natural gas wherein are performed the steps of: a) absorbing the hydrocarbon component of natural gas by means of virgin naphtha in an absorption device, discharging the non-absorbed nitrogen; b) stripping the h... | 09/10/2002 |
| 6407304 | Process for the isolation of high boilers from the cyclooligomerization of 1,3-butadiene A process for the isolation of high-boiling monomers from distillation residue formed in the cyclodimerization and/or cyclotrimerization of 1,3-butadiene after target products of cyclooctadiene, vinylcyclohexene and/or cyclododecatriene have been separate... | 06/18/2002 |
| 6358372 | Method of reducing formation of precipitates in solvent recovery system A method of removing at least one inert reaction diluent and/or wash solvent from a waste stream from a catalyst precursor production unit is disclosed, where the waste stream includes at least one reaction diluent or wash solvent, at least one titanium a... | 03/19/2002 |
| 6340414 | Process for the recovery of perfluorinated sulphonic acids from spent acid Process for the recovery of fluorinated sulphonic acid including the step of subjecting the spent acid to heat treatment with stepwise or continuously increasing temperature, withdrawing at least two fractions during the heat treatment; and recovering the... | 01/22/2002 |
| 6278029 | Process for eliminating polar compounds on an etherification unit A process for eliminating at least pollutants including polar compounds present in a first fluid, with said first fluid sent to a subsequent treatment, e.g., an etherification process: a) the first fluid containing pollutants is contacted with an auxiliary ... | 08/21/2001 |
| 6271434 | Process for separating linear alpha olefins from a crude stream containing saturated hydrocarbons, internal olefins, branched olefins, and linear alpha olefins This invention relates to a process for separating and isolating saturated hydrocarbons from olefins, and in particular, to a process for separating and isolating saturated hydrocarbons from olefins in a Fisher-Tropsch stream, and thereafter treating the ... | 08/07/2001 |
| 6211423 | Process for separating saturated compounds from olefins There is provided a process for separating olefins from saturated hydrocarbons in a feedstock containing saturated hydrocarbons, internal olefins, and alpha olefins characterized by steps of selectively forming of olefin-linear polyaromatic compound adduc... | 04/03/2001 |
| 6184431 | Process for separating internal and alpha olefins from saturated compounds This invention relates to a process for separating and isolating saturated hydrocarbons from olefins, and in particular, to a process for separating and isolating saturated hydrocarbons from olefins in a Fisher-Tropsch stream. There is provided a process ... | 02/06/2001 |
| 6175050 | Process for separating functionalized alpha olefins from functionalized internal olefins This invention relates to a process for separating functionalized alpha olefins from functionalized internal olefins. The process achieves by a step of contacting a feedstock containing functionalized alpha olefins and functionalized internal olefins with... | 01/16/2001 |
| 6121505 | Process for synthesizing and purifying olefins comprising dehydrogenating a paraffin The present invention relates to a process for the production of olefins from a hydrocarbon cut, comprising a step for separating at least one paraffin contained in the hydrocarbon cut, a step for dehydrogenating the paraffin and a step for purifying the ... | 09/19/2000 |
| 6066238 | Hydrocarbon separation A process for the separation of propylene from an input stream of C3 hydrocarbons containing propylene and methyl acetylene and/or propadiene and, optionally, C4 and/or higher hydrocarbons is described. The process includes subjecting the input stream to ... | 05/23/2000 |
| 6018089 | Process for separating linear internal olefins from branched internal olefins A feedstock of linear internal olefins and branched internal olefins are converted to a primarily linear internal olefin composition having a lower concentration of branched internal olefins than present in the feedstock, by: a) contracting the feedstock ... | 01/25/2000 |
| 6005157 | Cycloparaffin purification from petroleum streams Disclosed is a process for separating at least one cycloalkane containing 5-10 carbon atoms per molecule from at least one close-boiling alkane by extractive distillation of a feed consisting essentially of said at least one cycloalkane and said at least ... | 12/21/1999 |
| 5977423 | Mixed phase ethylation process for producing ethylbenzene An ethylbenzene production method is applied using a mixed phase ethylation of dilute ethylene with impure benzene. The benzene feed contains over 75% by weight benzene, with the balance being non-aromatic C6 to C7 hydrocarbons, incl... | 11/02/1999 |
| 5968346 | Two stage hydroprocessing with vapor-liquid interstage contacting for vapor heteroatom removal A hydroprocessing process includes two hydroprocessing reaction stages, both of which produce a liquid and a vapor effluent, and a liquid-vapor contacting stage. The first stage vapor effluent contains impurities, such as heteroatom compounds, which are r... | 10/19/1999 |
| 5942655 | Process for the removal of heavy hydrocarbonaceous co-products from a vapor effluent from a normally gaseous hydrocarbon dehydrogenation reaction zone A process for the removal of trace quantities of polynuclear aromatic compounds from the vapor effluent of a hydrocarbon dehydrogenation zone containing normally gaseous olefinic hydrocarbons, trace mononuclear aromatic compounds and trace polynuclear aro... | 08/24/1999 |
| 5942656 | Process for separating linear alpha olefins from 2-branched and/or 3-branched alpha olefins A process for separating linear alpha olefins from branched alpha olefins in a feed stream by: a) contacting the feed stream with a linear polyaromatic compound having at least four fused aromatic rings, such as 2,3-benzanthracene, under conditions effect... | 08/24/1999 |
| 5939596 | Butadiene removal system for ethylene plants with front end hydrogenation systems The present invention provides a process and system for the removal of butadiene from a cracked gas stream prior to entering a front end hydrogenation reactor in an olefin production facility.... | 08/17/1999 |
| 5936136 | Process for separating linear alpha olefins from 2 branched and/or3-branched alpha olefins Linear alpha olefins are separated from 2-branched alpha olefins and/or 3-branched alpha olefins. A feedstock of linear alpha olefins, branched alpha olefins, and internal olefins is converted to a linear alpha olefin composition having a lower concentrat... | 08/10/1999 |
