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| Number | Title | Issue Date |
| 8071835 | Process to produce polyolefins using metallocene catalysts The invention is directed to a process for producing polyolefins by one or more homogeneous or colloidal polymerization catalyst wherein residual catalyst is removed by using a solid sorbent. ... | 12/06/2011 |
| 8022264 | Adsorption composition and method of removing CO from streams Carbon monoxide is removed from streams by adsorption on an adsorption composition which comprises copper and zirconium oxides but no zinc oxide, which comprises from 70 to 99.8% by weight of copper oxide and from 0.2 to 30% by weight of zirconium oxide, based on th... | 09/20/2011 |
| 7396973 | Simulated moving bed adsorptive separation process for handling multiple feedstocks The present invention discloses a means to improve the production capacity and feedstock handling flexibility of a simulated moving bed adsorptive separation process by introducing a second feed stream to the adsorbent chamber, such second feed stream comprising a f... | 07/08/2008 |
| 7365152 | Method for producing highly reactive, low halogen polyisobutenes A process is described for preparing polyisobutene having a low halogen content, in which isobutene is polymerized in the presence of a catalyst which comprises a halogenated Lewis acid, the catalyst is removed and/or deactivated, and the resulting polyisobutene is ... | 04/29/2008 |
| 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 |
| 7342145 | Process for refining liquefied petroleum gas in a commercial scale The present invention relates to a novel process for refining the liquefied petroleum gas (LPG) in a commercial scale. The process comprises: sequentially performing fine desulfurization and mercaptan conversion of the LPG after alcohol amine treatment through desul... | 03/11/2008 |
| 7339088 | Alkylbenzene refining process and apparatus Improved processes and apparatus use a finishing column with a mid-cut that provides alkylbenzene products of high purity containing less than about 1 ppmw benzene and less than about 50 ppmw heavies while accommodating enhancements in the efficiencies and the capac... | 03/04/2008 |
| 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 |
| 7304011 | Compositions and processes for reducing NOemissions during fluid catalytic cracking Compositions for reduction of NOx generated during a catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise a fluid catalytic cracking catalyst composition, preferably containing a Y-type zeoli... | 12/04/2007 |
| 7288499 | Regenerable high capacity sorbent for removal of mercury from flue gas A regenerable, high-capacity sorbent for removal of mercury from flue gas and processes and systems for making and using the sorbent. A phyllosilicate substrate, for example vermiculite or montmorillinite, acts as an inexpensive support to a thin layer for a polyval... | 10/30/2007 |
| 7264640 | Method for improving the performance of engines powered by liquid hydrocarbon fuel A method for improving performance of an engine comprising contacting contaminated liquid hydrocarbon fuel comprising an initial concentration of DRA with one or more effective DRA removal agent under conditions effective to produce decontaminated liquid hydrocarbon... | 09/04/2007 |
| 7261747 | Removal of drag reducer additive from liquid hydrocarbon fuel using attapulgus clay The present application provides a method for removing drag reducer additive (“DRA”) from liquid hydrocarbon fuel. The method comprises: providing contaminated liquid hydrocarbon fuel comprising an initial concentration of DRA; contacting the contaminated liquid... | 08/28/2007 |
| 7214840 | Reduction of the Bromine Index of linear alkylbenzenes In a process for reducing the Bromine Index of a feed containing a linear alkylbenzene and bromine-reactive olefinic hydrocarbon contaminants, the feed is contacted under conditions effective to remove bromine-reactive olefinic hydrocarbon contaminants with a cataly... | 05/08/2007 |
| 7205448 | Process for the removal of nitrogen compounds from a fluid stream At lower temperatures an acidic molecular sieve adsorbent preferentially adsorbs water and basic organic nitrogen compounds over weakly basic organic nitrogen compounds such as nitrites. Elevated temperatures improve the capacity of acidic molecular sieve adsorbents... | 04/17/2007 |
| 7205258 | Catalysts for the production of methylchlorosilanes using zinc oxide promoters The present invention provides a catalyst that may be used to facilitate the formation of dimethylchlorosilanes. A catalyst in which copper oxide and zinc oxide are in intimate contact and form agglomerated particles allows for the increased selectively of the produ... | 04/17/2007 |
| 7199275 | Feed pretreating This invention provides for a process for hydrocarbon conversion in which a partially dehydrated hydrocarbon feedstock is contacted with at least two different molecular sieve materials, including a first molecular sieve having a Si/Al molar ratio of less than about... | 04/03/2007 |
| 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 |
| 7160438 | Process for removal of nitrogen containing contaminants from gas oil feedstreams The present invention is directed to the removal of nitrogen and sulfur containing impurities from high molecular weight petroleum feedstock obtained from fluid cracking catalyst or distillation zone of a petroleum treatment plant. The present process comprises firs... | 01/09/2007 |
| 7128829 | Removal of impurities from liquid hydrocarbon streams A novel process effective for the removal of organic sulfur compounds, organic nitrogen compounds and light olefins from liquid hydrocarbons is disclosed. The process more specifically addresses the removal of these contaminants from aromatic compounds including ben... | 10/31/2006 |
| 7119243 | Alkylation process with efficient effluent refrigeration An alkylation process in which a recycle stream is cooled by heat exchange with the alkylation reactor effluent is disclosed. ... | 10/10/2006 |
| 7102038 | Phosphorous removal and diene removal, when using diene sensitive catalyst, during conversion of olefins to branched primary alcohols A process for making a selectively branched alcohol composition contacting a lower olefin feed comprising linear olefins having at least 3 carbon atoms and a concentration of phosphorous-containing compounds with a sorbent comprising a metal or metal oxide on a supp... | 09/05/2006 |
| 7087156 | Process for removal of nitrogen containing contaminants from gas oil feedstreams The present invention is directed to the removal of nitrogen and sulfur containing impurities from high molecular weight petroleum feedstock obtained from fluid cracking catalyst or distillation zone of a petroleum treatment plant. The present process comprises firs... | 08/08/2006 |
| 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 |
| 7053156 | Process for hydrogenating block copolymers Disclosed is a process for hydrogenating a block copolymer comprising admixing a block copolymer cement with hydrogen in the presence of a heterogeneous hydrogenation catalyst wherein the heterogeneous hydrogenation catalyst is a metal catalyst on a porous alumina s... | 05/30/2006 |
| 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 |
| 7018434 | Removal of drag reducer additive from fuel by treatment with selected activated carbons and graphites The application relates to a method for selecting drag reducer additive (DRA) effectively removable by activated carbons and graphites to be used in fuel. The appliction also relates to effective activated carbons and graphites for removing DRA from fuel, and to a m... | 03/28/2006 |
| 6960700 | Adsorbent beds for removal of hydrides from hydrocarbons A process for removal of trace impurities of hydrides of arsenic, phosphorus, antimony, silicon, and boron and sulfur and oxygenates and compounds containing these impurities from a hydrocarbon stream comprising contacting the hydrocarbon stream with an adsorbent ma... | 11/01/2005 |
| 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 |
| 6943276 | Alkylation process with efficient effluent refrigeration An alkylation process in which a recycle stream is cooled by heat exchange with the alkylation reactor effluent is disclosed. ... | 09/13/2005 |
| 6914034 | Adsorbents for removing heavy metals and methods for producing and using the same Adsorbents for removing anions of a heavy metals comprise a porous carbon in which at least one oxygen-containing compound of iron, copper, and/or aluminum is incorporated. The oxygen-containing compound may be incorporated into the porous carbon by impregnation or ... | 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 |
| 6875340 | Process for adsorptive desulfurization of light oil distillates A process for adsorptive desulfurization of gasoline or diesel oil or aromatics lower than C12 containing organic sulfide impurities, wherein these feedstocks contact an amorphous alloy adsorbent comprising nickel as a major active component in a fluidize... | 04/05/2005 |
| 6846903 | Method for producing polyisobutylenes Polyisobutenes are prepared by cationic polymerization of isobutene or isobutene-containing hydrocarbon streams in the liquid phase in the presence of boron trifluoride as a catalyst, the catalytic activity of the boron trifluoride being partially or completely elim... | 01/25/2005 |
| 6843907 | Process for removal of carbonyl sulfide from hydrocarbons The invention comprises a process for removal of carbonyl sulfide from a hydrocarbon, which comprises contacting a hydrocarbon stream containing carbonyl sulfide with an adsorbent and then regenerating the adsorbent by passing a heated gas, containing a hydrolyzing ... | 01/18/2005 |
| 6805790 | Process and an apparatus for preparation of petroleum hydrocarbon solvent with improved color stability from nitrogen rich crude oil A process and an apparatus for the preparation of petroleum hydrocarbon solvent with improved color stability from crude oils having high concentration of nitrogenous compounds which comprises passing said petroleum hydrocarbon stream containing substantial amount o... | 10/19/2004 |
| 6761818 | Heavy oil-solid composition and method for preparing the same The invention includes a compositon of matter comprising a heavy oil having dispersed therein surface modified solid wherein said surface modified solids comprise solids having adsorbed thereon air oxidized polar hydrocarbons from said heavy oil and wherein said sur... | 07/13/2004 |
| 6752919 | Promoted absorbents for the removal of contaminants A process for the removal of trace metals from a hydrocarbon stream includes contacting the hydrocarbon stream with an absorbent material comprising antimony pentoxide supported on an absorbent substrate. The hydrocarbon product is then withdrawn from the absorbent ... | 06/22/2004 |
| 6753452 | Removal of polar contaminants from aromatic feedstocks A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds. The process comprises contacting the feedstock in an adsorption zone at a temperature of less than or equal to 130° C. with an adsorbent selective for the... | 06/22/2004 |
| 6653514 | Removal of phosphorus-containing impurities from an olefin feedstock The invention pertains to a process of removing phosphorous-containing impurities and preferably also dienes, from an olefin stream using a sorbent selected from the group consisting of an acidic ion exchange resin, an acidic zeolite, an acidic alumina, a... | 11/25/2003 |
| 6632368 | Process for removing fluorides from fluids A new method for removing HF and related organic fluorides from fluid streams in which the fluoride species exist as impurities and, in particular, from hydrocarbon fluid streams containing no more than about 1.0% by weight total combined fluorides. The m... | 10/14/2003 |
