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| Number | Title | Issue Date |
| 8124819 | Oligomerization process A process for oligomerization of isobutene, the process including: feeding a hydrocarbon stream comprising n-butane, 1-butene, 2-butene, isobutane, and isobutene to a catalytic distillation reactor system comprising a hydroisomerization catalyst; feeding hydrogen to... | 02/28/2012 |
| 7525007 | Production of propylene from steam cracking of hydrocarbons, particularly ethane An ethane or other hydrocarbon feedstock is steam cracked to produce an ethylene stream which is processed in an ethylene plant recovery section to separate an ethane recycle and a polymer grade or chemical grade ethylene product stream. A portion of the ethylene pr... | 04/28/2009 |
| 7476773 | Process for preparing a gas oil by oligomerization A process for preparing a gas oil cut comprises the following steps in succession: 1) oligomerizing an olefinic C2-C12 hydrocarbon cut, preferably C3-C7 and more preferably C3-C5; ... | 01/13/2009 |
| 7459593 | Metathesis unit pretreatment process with formation of octene Disclosed is a process for integrating a butene dimerization process with a metathesis process to remove isobutene from the feed stream to the metathesis reactor. The isobutene is preferentially dimerized in the dimerization process to leave n-butenes for metathesis... | 12/02/2008 |
| 7425658 | Process for producing 1-octene from butadiene Method for producing 1-octene from butadiene by dimerizing and alkoxylating butadiene in the presence of one or more alkoxy substituted phosphine ligands under alkoxydimerization conditions with an alkoxydimerization catalyst, the alkoxydimerization conditions being... | 09/16/2008 |
| 7420096 | Olefin oligomerization Limiting the sulphur level in olefin feedstocks to zeolite-catalysed oligomerization enhances selectivity to trimer and catalyst life and activity. ... | 09/02/2008 |
| 7414164 | Diisobutylene process This invention is a process for producing diisobutylene from isobutylene. The process comprises first forming dry sulfonic acid resin by contacting water wet sulfonic acid resin catalyst with a first reaction feed comprising isobutylene under conditions effective to... | 08/19/2008 |
| 7411106 | Molecular sieve compositions, catalyst thereof, their making and use in conversion processes The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molec... | 08/12/2008 |
| 7402718 | Conversion process The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalys... | 07/22/2008 |
| 7378563 | Molecular sieve compositions, catalysts thereof, their making and use in conversion processes The invention relates to a conversion process of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene, in the presence of a molecular sieve catalyst composition that includes a molecular sieve and a Group ... | 05/27/2008 |
| 7378562 | Process for removal of alkynes and/or dienes from an olefin stream The present invention is a process for removing alkynes and/or dienes from an olefin product stream withdrawn from an oxygenate-to-olefins reactor. The process comprises hydrogenating a first olefin stream that has alkynes and/or dienes in the presence of excess hyd... | 05/27/2008 |
| 7371909 | Method for producing 1-olefins using palladium carbene compounds The invention relates to a process 1-olefins by telomerization of compounds having conjugated double bonds with a telogen in the presence of a noble metal telomerization catalyst, hydrogenation of the telomer and cleavage of the hydrogenated intermediate. Use of the... | 05/13/2008 |
| 7371916 | Conversion of an alcoholic oxygenate to propylene using moving bed technology and an etherification step The average propylene selectivity per on-stream cycle of an alcoholic oxygenate to propylene (OTP) process using one or more fixed beds of a dual-function oxygenate conversion catalyst is substantially enhanced by the use of a feed pretreatment step involving a cata... | 05/13/2008 |
| 7371915 | Conversion of oxygenate to propylene using moving bed technology The average cycle propylene selectivity of an oxygenate to propylene (OTP) process using one or more fixed beds of a dual-function oxygenate conversion catalyst is substantially enhanced by the use of moving bed reactor technology in the hydrocarbon synthesis portio... | 05/13/2008 |
| 7368623 | Process for producing 1-octene from butadiene in the presence of titanium catalysts A method is described for the preparation of 1-octene starting from butadiene, wherein in a first step (a) the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on palladium containing one or more tri-substituted mon... | 05/06/2008 |
| 7368622 | Process for the preparation of 1-octene Process in two steps for the preparation of 1-octene starting from butadiene which comprises: a first step (a) in which the bis-hydrodimerization of butadiene to 1,7-octadiene is effected in the presence of a catalyst based on a palladium complex containing one or m... | 05/06/2008 |
| 7358410 | Processes for forming polypropylene from an oxygenate-contaminated monomer feedstock The present invention provides various processes for producing polypropylene from an oxygenate-contaminated propylene-containing feedstock, preferably derived from an oxygenate to olefin reaction system. In one embodiment, the process includes providing a propylene-... | 04/15/2008 |
| 7355086 | Method for stabilizing catalyst activity during MTO unit operation A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst particles, the regenerated particles are mixed with particles having coke o... | 04/08/2008 |
| 7355087 | Production of 1-alkenes from mixed olefin streams using catalytic distillation A catalytic distillation process for isomerizing and separating 1-alkenes from a mixed alkene stream. The process comprises contacting a mixed alkene stream comprising the 1-alkene and homologs thereof with a supported isomerization catalyst under isomerization/dist... | 04/08/2008 |
| 7339086 | Process for the hydrogenation of branched olefins deriving from the dimerization of isobutene A process is described for the hydrogenation of olefinic streams containing sulfurated compounds, obtained starting from hydrocarbon cuts containing isobutene (by means of selective dimerization), characterized by fractionating said streams in one or more distillati... | 03/04/2008 |
| 7332134 | Fluid bed oxygenates to olefins reactor apparatus and process of controlling same A reactor apparatus and related method for controlling at least one process variable in a circulating fluid bed oxygenates to olefins reactor system comprising a riser are provided. The process variable is selected from at least one of (i) space velocity, (ii) avera... | 02/19/2008 |
| 7329788 | Process for producing gasoline components Process for producing gasoline components. The process comprises feeding a fresh olefinic hydrocarbon feedstock to a reaction zone, in which its structure is first isomerized. The isomerized hydrocarbon is drawn out of the first reaction zone and conducted to a seco... | 02/12/2008 |
| 7329787 | Process for transforming hydrocarbons into a fraction having an improved octane number and a fraction with a high cetane index A process is described for transforming an initial hydrocarbon feed containing 4 to 15 carbon atoms, limits included, into a hydrocarbon fraction having an improved octane number and a hydrocarbon fraction with a high cetane number. ... | 02/12/2008 |
| 7323588 | Isononyl benzoates and their use The invention relates to isomeric nonyl benzoates, processes for their preparation, mixtures of the same with alkyl phthalate, alkyl adipate, or alkyl cyclohexanedicarboxylate, and also to the use of these mixtures. ... | 01/29/2008 |
| 7314605 | Microporous crystalline metal silicates and processes for their preparation New bridged layered silicates are disclosed where the bridging groups bridge adjacent silicate layers via oxygen atoms on each silicate layer that are unshared to produce porous three dimensional structures. Methods for making these bridged layered silicates are dis... | 01/01/2008 |
| 7300966 | Method for producing blends of phthalic acid diesters, decanols and tridecanols A process is described for preparing mixtures of diesters of phthalic acid with decanols and tridecanols by reacting phthalic acid or a reactive derivative of phthalic acid with a mixture made from at least one decanol and at least one tridecanol. Mixtures ob... | 11/27/2007 |
| 7270739 | Fractionating and further cracking a Cfraction from a naphtha feed for propylene generation The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream by fractionating the naphtha feed to obtain at least a C6 rich fraction and feeding the C6 | 09/18/2007 |
| 7271304 | Process and apparatus for the production of diesel fuels by oligomerisation of olefinic feed streams This invention provides a process for the production of diesel boiling range hydrocarbons, the process including at least the steps of obtaining an olefinic feed stream from one or more hydrocarbon producing processes wherein the olefinic feed stream contains branch... | 09/18/2007 |
| 7268265 | Apparatus and process for light olefin recovery The present invention relates to a process and apparatus for the production of light olefins comprising olefins having from 2 to 3 carbon atoms per molecule from a feedstock containing heavier olefins. An intermediate cut from a fractionation column is used as olefi... | 09/11/2007 |
| 7267759 | Fractionating and further cracking a Cfraction from a naphtha feed for propylene generation The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream by fractionating the naphtha feed to obtain a C6 fraction and feeding the C6 fraction ei... | 09/11/2007 |
| 7262332 | Process for multistage conversion of a charge comprising olefins with four, five or more carbon atoms, with the aim of producing propylene The invention relates to a process for production of propylene in particular from a C4 and/or C5 cut from steam cracking and/or catalytic cracking, preferably comprising both butenes and pentenes, said process comprising at least one oligomerization stage, followed ... | 08/28/2007 |
| 7259285 | Oligomerization catalyst, a method for production and the use thereof An oligomerization catalyst for olefins having from 2 to 6 carbon atoms is produced by treating aluminum oxide with a nickel compound and a sulfur compound, either simultaneously or firstly with the nickel compound an then with the sulfur compound, and subsequently ... | 08/21/2007 |
| 7227047 | Butadiene and isobutylene removal from olefinic streams A process is disclosed for selectively removing isobutene and butadiene from a stream, the process comprising contacting the stream with a hydrogenation catalyst to hydrogenate butadiene and an oligomerization catalyst to oligomerize isobutene. ... | 06/05/2007 |
| 7223895 | Production of propylene from steam cracking of hydrocarbons, particularly ethane An ethane or other hydrocarbon feedstock is steam cracked to produce an ethylene stream which is processed in an ethylene plant recovery section to separate an ethane recycle and a polymer grade or chemical grade ethylene product stream. A portion of the ethylene pr... | 05/29/2007 |
| 7199163 | Method for removing volatile components from polymer compositions Method for continuously removing the unreacted butene-1, and optionally other volatile components, from a polymeric solution obtained by liquid phase (co)polymerization of butene-1, the method comprising the steps of: subjecting the polymeric solution to heating and... | 04/03/2007 |
| 7199278 | Conversion of oxygenates to olefins A process is described for converting an oxygenate-containing feedstock into one or more olefins in a moving bed reactor system operating in countercurrent flow using a catalyst composition comprising a molecular sieve and at least one metal oxide having an uptake o... | 04/03/2007 |
| 7195741 | Multiple riser reactor The present invention is directed to a hydrocarbon conversion apparatus. The apparatus comprises the following: a plurality of riser reactors, each of the riser reactors having a first end into which a catalyst can be fed and a second end through which the catalyst ... | 03/27/2007 |
| 7183450 | 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 from about 1,000 ppm to about 10 percent by weight oxygenated hydrocarbo... | 02/27/2007 |
| 7154013 | Olefin metathesis A process in which tetramethylethylene and neohexene are produced by starting with butene in a distillation column reactor to produce a product containing ethylene, diisobutene, tetramethylethylene, heavier oligomers. After separating these components, the separated... | 12/26/2006 |
| 7150821 | High purity olefinic naphthas for the production of ethylene and propylene The present invention relates to an olefinic naphtha and a process for producing lower olefins from this naphtha. In the process of the present invention for producing lower olefins, preferably ethylene, at least a portion of a hydrocarbon asset is converted to synt... | 12/19/2006 |
