Chemistry of hydrocarbon compounds inventions 07/06

20060167326 - Stabilization of olefin metathesis product mixtures: A process of stabilizing an olefin metathesis product mixture, preferably, against double bond isomerization and thermal and chemical degradation. The process involves (a) contacting an olefin metathesis product mixture comprising one or more olefins produced in a metathesis process, a metathesis catalyst comprising a catalytic metal and one or more...

20060167327 - Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds: The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based catalyst. The improvement comprises operating the hydrogenation reactor at a reaction temperature sufficiently...

20060167328 - Aromatic compound recovery: A method for the solvent extraction recovery of an aromatic wherein an aromatic extract is formed that contains the aromatic and non-aromatics that are both lighter than and heavier than the aromatic, analyzing at least two separate groups of lighter and heavier non-aromatics in the extract, determining from the analyses...

20060167329 - Reactor: A reactor for chemical reactions and/or adsorptive separation processes comprise having a jacket (1); a central hollow column (2,2′); two essentially annular beds (6, 6′, 7, 7′, 7″) comprise an outer bed (6, 6′) consisting essentially of a chemically and/or adsorptively active material (active bed) and an inner bed (7,...

20060161030 - Kerosene compositions: A method of controlling the odour emitted by a kerosene composition such that it is below a specified level, by ensuring that the composition has the following properties: (1) the range from initial boiling point to end point, in accordance with the atmospheric pressure distillation test method stipulated in JIS...

20060161031 - Ultra pure fluids: The invention relates to hydrocarbon fluids having high purity with respect to at least one of sulfur species, nitrogen species, oxygenated species, and unsaturated species, particularly hydrocarbon fluids low in aromatics, a method of making said hydrocarbon fluids, a catalyst for use in said method, an apparatus whereby said method...

20060161032 - Method for the manufacture of hydrocarbons: Feedstock originating from renewable sources is converted to hydrocarbons in diesel fuel distillation range by contacting with a supported catalyst comprising VIII group metal/metals, whereby the consumption of hydrogen is decreased....

20060161033 - Production of propylene employing dimerising ethylene to 1-butene, hydroisomerization to 2-butene and metathesis by ethylene: A process for producing high purity propylene comprises: a step for dimerizing ethylene to 1-butene; a step for hydroisomerizing 1-butene to 2-butenes; and a step for metathesis of 2-butenes by ethylene. Advantageously, the ethylene used to produce the 1-butene and ethylene for metathesis derive from a steam cracking unit. To...

20060161034 - High viscosity paos based on 1-decene/1-dodecene: This invention relates to the use of 1-decene/1-dodecene olefin mixture to produce high viscosity polyalphaolefins (PAOs) having a viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445) and a number average molecular weight of between about 1200 to about 4000, particularly useful as lubricant...

20060161035 - Conversion of oxygenate to propylene using moving bed technology and a separate heavy olefin interconversion step: The average propylene cycle yield of an oxygenate to propylene (OTP) process using a dual-function oxygenate conversion catalyst is substantially enhanced by the use of a combination of: 1) moving bed reactor technology in the catalytic OTP reaction step in lieu of the fixed bed technology of the prior art;...

20060161036 - Fluidizing a population of catalyst particles having a low catalyst fines content: The present invention relates to processes for fluidizing a population of catalyst particles that are depleted of catalyst fines. In one embodiment, the process includes providing a plurality of catalyst particles in the reactor, wherein the catalyst particles have a d2 value of greater than about 40 microns. The catalyst-...

20060161037 - Catalyst composition comprising a heteropoly acid, zinc, and a support component and processes therefor and therewith: A process of contacting at least one isoparaffin and at least one C5 olefin in the presence of a catalyst composition under conversion conditions to provide for converting the at least one isoparaffin and the at least one C5 olefin is provided. The catalyst composition contains a heteropoly acid, zinc,...

20060155154 - Process for the selective hydrogenation of alkynes: A process for removal of acetylenic compounds from hydrocarbon streams in which a hydrocarbon feed having a target fraction which contains a first concentration of acetylenic compounds and olefins is contacted with a catalyst selective for the hydrogenation of acetylenic compounds in the presence of hydrogen and a solvent having...

20060155155 - Method of aromatic alkylation: A catalyst for use in aromatic alkylation, such as toluene alkylation with methanol, is comprised of a zeolite with pore size from about 5.0 to about 7.0 Å containing a hydrogenating metal. The catalyst may be used in preparing an alkyl aromatic product by providing the catalyst within a reactor....

20060155156 - Method of removing organic sulfur compounds from alkylate: A process for the removal of organic sulfur compounds, primarily oxygenated organic compounds, such as sulfates and sulfonic esters from a hydrocarbon liquid is disclosed which comprises contacting the hydrocarbon liquid with a coalescer comprising a mesh material which has been wetted by sulfuric acid. The hydrocarbon liquid may be...

20060155157 - Catalyst direct conversion of methane to ethane and ethylene: The present invention relates to an improved catalyst for direct conversion of methane to ethane and ethylene, a method for producing the catalyst and a process making use of the catalyst....

20060149103 - 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-containing stream from an oxygenate to olefin reaction system, wherein the propylene-containing stream comprises propylene and an oxygenate. The...

20060149104 - Manufacture of xylenes from reformate: A process is provided for the production of xylenes from reformate. The process is carried out by methylating the benzene, toluene, or both present in the reformate to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by...

20060149105 - Low space-velocity transalkylation process for ethylbenzene: The use of a low space-velocity reactor containing transalkylation catalysts to react heavy aromatic compounds of carbon number nine (and heavier carbon numbers) with benzene to form carbon number eight aromatics is disclosed. Conditions of low space-velocity promote approach to equilibrium at temperatures favoring carbon number eight aromatics. The catalyst...

20060149106 - Toluene disproportionation process utilizing mild sulfiding during startup: A process for the disproportionation of toluene over a nickel-modified mordenite catalyst which has been pretreated with mild sulfiding procedure. The sulfur dose is employed in a minor amount relative to the nickel content of the catalyst. The modified mordenite catalyst is contacted with a sulfur-containing compound such as hydrogen...

20060149107 - Process for the oligomerization of olefins in fischer-tropsch derived condensate feed: A process for oligomerizing the olefins present in a Fischer-Tropsch derived condensate containing a mixture of olefins and oxygenates and boiling in the range of diesel which comprises (a) removing substantially all of the oxygenates present in the Fischer-Tropsch condensate; (b) contacting the Fischer-Tropsch derived condensate having less than 100...

20060149109 - Converting methanol and ethanol to light olefins: The present invention provides processes for producing light olefins from a feedstock comprising methanol and ethanol. The ethanol is converted to ethylene and water over a dehydration catalyst, while the methanol is converted to light olefins and water over a molecular sieve catalyst. These conversion steps may occur in two...

20060149111 - Liquid contacting of post-quench effluent vapor streams from oxygenate to olefins conversion to capture catalyst fines: A process is provided for converting oxygenate to olefins from a fluidized bed reactor which comprises removal of catalyst fines from a quenched vaporous effluent by contacting with a liquid low in catalyst fines content, e.g., oxygenate feedstock, or by-product water from the oxygenates to olefins conversion which is stripped...

20060149110 - 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 on their surface in a manner that maintains their catalytic activity at a predetermined level....

20060149108 - Oxygenate conversion reactor catalyst coolers: A process of converting oxygenates to light olefins is disclosed including an oxygenate feedstream with contacting catalyst inside a reactor and converting the oxygenate feedstream to said light olefins. The catalyst becomes spent as deposits from the reaction clog up pores on the catalyst surface. A portion of the spent...

20060149112 - Multi-layered dehydrogenation catalyst system and process of use: A system for dehydrogenating a C3 or C4 hydrocarbon feed stream containing a first and second layer of catalysts placed in the hydrocarbon feed stream, wherein the feed stream first passes through the first layer and then the second layer of catalysts and wherein the catalysts of the first layer...

20060149114 - Auto thermal cracking reactor: The present invention provides a reactor design that enables an auto-thermal cracking process to be conducted at any suitable pressure wherein the gaseous reactants are preheated separately before mixing and then presented to the reaction zone in a uniformly distributed manner. In particular, the present invention-relates to apparatus for reacting...

20060149113 - Process for the production of olefins: A process for the production of olefins from a hydrocarbon comprising the steps of: a) passing a first feed stream comprising gaseous reactants to a first reaction zone wherein said gaseous reactants react exothermically to provide a product stream b) producing a mixed feed stream comprising oxygen by passing the...

20060149115 - Refrigeration system for the production and recovery of olefins: An autothermal cracking process for production and recovery of olefins. The process comprises feeding a substantially hydrocarbon feedstock and an oxygen-containing gas to an autothermal cracker to provide a hydrocarbon product stream comprising olefins. A waste enthalpy source generated by said autothermal cracking process is used to at least partially...

20060149116 - Process for separating olefins from saturated hydrocarbons: This invention relates to a process for separating and isolating olefins from saturated hydrocarbons, and in particular, to a process for separating and isolating olefins from saturated hydrocarbons in a Fisher-Tropsch stream. There is provided a process for separating olefins from saturated hydrocarbons in a feedstock, comprising: contacting a feedstock...

20060149117 - Process for the preparation of detergent compounds: A process for the preparation of detergents containing a relatively low amount of isoparaffins, involving separating a hydrocarbonaceous product stream from a Fischer-Tropsch process using a cobalt based catalyst and producing normally liquid and normally solid hydrocarbons into a light fraction boiling below an intermediate fraction having detergent hydrocarbons, an...