Chemistry of hydrocarbon compounds inventions 05/06

20060111596 - Process for the preparation of adamantanes: According to the present invention, there is provided a process for producing adamantanes by isomerizing a tricyclic saturated hydrocarbon compound having 10 or more carbon atoms, comprising (A) a reaction step for isomerizing a raw material, (B) a concentration step for concentrating the adamantanes in a reaction product liquid, (C)...

20060111597 - Alkylation and catalyst regenerative process: A process for the regeneration of a deactivated zeolite beta catalyst such as rare earth promoted zeolite beta catalyst deactivated in the course of an aromatic alkylation reaction. A zeolite beta conversion catalyst deactivated with the deposition of coke is heated to a temperature in excess of 300° C. in...

20060111598 - Diisobutylene process: This invention is a process for producing diisobutylene from isobutylene. The process comprises contacting isobutylene with a solid adsorbent to remove sulfur and/or nitrogen impurities from the isobutylene, followed by oligomerizing the isobutylene to diisobutylene using a sulfonic acid-type ion exchange resin. The solid adsorbent removes sulfur and/or nitrogen impurities...

20060111599 - 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 volumetric ratio of at least 1:2 to...

20060111600 - Methods and apparatus for processing fuels: A fuel or other process fluid is cleansed by a) combining the fluid with water and an oxidizer; b) mixing the combination in a mixer having a volume V; c) separating the mixed combination into hydrophobic and hydrophilic phases; d) filtering the hydrophobic phase through a filter; e) removing water...

20060111601 - Method of removing dimethyl ether from an olefin stream: This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene...

20060111602 - 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 be cooled to temperatures of at least −40° F....

20060106265 - Method and compositions for inhibiting formation of hydrocarbon hydrates: A method for inhibiting formation of hydrocarbon hydrates in mixtures of water and a hydrate-forming guest molecule has been discovered that involves adding a composition to the mixtures in an amount that is effective in inhibiting formation of the hydrocarbon hydrates under conditions otherwise effective to form the hydrocarbon hydrates...

20060106266 - Process for isomerization of a c7 fraction with co-production of an aromatic molecule-rich fraction: Process for the production of a RON isomerate that is at least equal to 80 and that contains less than 1% by weight of aromatic compounds and for co-production of an aromatic fraction that for the most part contains toluene, starting from a fraction with 7 carbon atoms containing paraffins,...

20060106268 - High activity and high stability iron oxide based dehydrogenation catalyst having a low concentration of titanium and the manufacture and use thereof: A high activity and high stability dehydrogenation catalyst, its manufacture and its use. The catalyst comprises an iron ox:de component having a low titanium content, wherein the iron oxide component is made by the heat-treating of a yellow iron oxide precipitate made by precipitating from a solution of an iron...

20060106269 - Methods for designing and operating a dehydrogenation process system that uses a high stability dehydrogenation catalyst: A method of improving the operation a dehydrogenation reactor system having a dehydrogenation reactor defining a dehydrogenation reaction zone and containing a first volume of a dehydrogenation catalyst. The method comprises removing from the dehydrogenation reactor at least a portion of the first volume of the dehydrogenation catalyst; placing in...

20060106267 - Process for the manufacture of an alkenyl aromatic compound under low steam-to-oil process conditions: An improved dehydrogenation process that comprises the dehydrogenation of dehydrogenatable hydrocarbons by the utilization of an iron oxide based dehydrogenation catalyst composition having a low titanium content under low steam-to-oil process conditions....

20060106270 - Selective conversion of oxygenate to propylene using moving bed technology and a hydrothermally stabilized dual-function catalyst: The average propylene cycle selectivity 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 hydrocarbon synthesis portion of the OTP flow scheme in lieu of the fixed bed technology...

20060106271 - Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from hydrocarbon cracking: Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from cracking a hydrocarbon stream, wherein the cracked gas is treated in an absorptive demethanizer with a C4/C5 solvent at a temperature between −10° C. and −40° C. to free the cracked gas from...

20060100466 - Cycloalkane base oils, cycloalkane-base dielectric liquids made using cycloalkane base oils, and methods of making same: Cycloalkane base oil, methods of making cycloalkane base oil, and dielectric liquid containing such cycloalkane base oil is provided. The cycloalkane base oil contains a quantity of isoparaffins and from 50 wt. % to 70 wt. % cycloalkanes having the formula CnH2n wherein n is from 15 to 30, the...

20060100467 - Cycloalkane base oils, cycloalkane-base dielectric liquids made using cycloalkane base oils, and methods of making same: Cycloalkane base oil, methods of making cycloalkane base oil, and dielectric liquid comprising cycloalkane base oil, the cycloalkane base oil comprising a quantity of isoparaffins and from 50 wt. % to 70 wt. % cycloalkanes having the formula CnH2n wherein n is from 15 to 30, said quantity of isoparaffins...

20060100468 - Method for hydrogenating olefin: A process for hydrogenating an olefin, which comprises upwardly passing a liquid containing an olef in and a gas containing hydrogen through a packed bed of a solid hydrogenation catalyst, wherein the superficial velocity of the gas is 3.0 cm/sec or more....

20060100469 - Process for converting gaseous alkanes to olefins and liquid hydrocarbons: A process for converting gaseous alkanes to olefins and liquid hydrocarbons wherein a gaseous feed containing alkanes is reacted with a dry bromine vapor to form alkyl bromides and hydrobromic acid vapor. The mixture of alkyl bromides and hydrobromic acid are then reacted over a synthetic crystalline alumino-silicate catalyst, such...

20060100470 - Selective purification of mono-terpenes for removal of oxygen containing species: The present invention is a method for preparing mono terpenes as porogens for porous silicon oxide dielectric film depositions in electronic devices by separating oxygen-containing impurity compounds from mono terpenes, comprising; providing a neat mono terpene containing oxygen-containing impurity compounds; providing an activated silica gel preparative chromatographic column; contacting the...

20060100471 - Process for transalkylation of alkyl-aromatic hydrocarbons used in two reaction zones: A process for transalkylation of an alkyl-aromatic hydrocarbon feedstock that has at least 9 carbon atoms per molecule that comprises a) the introduction of said alkyl-aromatic hydrocarbon feedstock at the inlet of a first reaction zone where it is brought into contact with at least a first zeolitic catalyst, b)...

20060100472 - Method of synthesizing silicoaluminophosphate molecular sieves: In a method of synthesizing a silicoaluminophosphate molecular sieve, a synthesis mixture is prepared by combining a source of phosphorus and at least one organic directing agent; and then introducing a source of aluminum into the combination of the phosphorus source and organic directing agent, wherein the temperature of the...

20060100473 - Production of olefins: A process for steam cracking a hydrocarbon feedstock containing olefins to provide increased light olefins in the steam cracked effluent, the process comprising passing a first hydrocarbon feedstock containing one or more olefins through a reactor containing a crystalline silicate to produce an intermediate effluent with an olefin content of...

20060100474 - Method of making mixtures of internal olefins: The invention provides new methods for the synthesis of isomeric mixtures of alkenes from α-olefins or mixtures of internal and terminal alkenes (i.e., predominantly α-olefins). The invention describes the process for producing an isomeric mixture of at least one internal alkene comprising contacting at least one or a mixture of...

20060094913 - Ion pair amphiphiles as hydrate inhibitors: A method of inhibiting hydrates in a fluid comprising water and gas comprising adding to the fluid an effective hydrate-inhibiting amount of one or more ion-pair amphiphiles, wherein the ion-pair amphiphiles are composed of one or more cationic amphiphiles and one or more anionic amphiphiles....

20060094914 - Paraffin dehydrogenation catalyst: One aspect of the invention relates to a dehydrogenation catalyst composite containing alumina, chromium oxide, lithium oxide, and sodium oxide. The invention also relates to methods of making the dehydrogenation catalyst composite. Another aspect of the invention relates to method of dehydrogenating a dehydrogenatable hydrocarbon involving contacting the dehydrogenatable hydrocarbon...

20060094916 - Direct return of oxygenate recycle stream in olefin production process: The invention is a process and the corresponding apparatus for producing light olefins from oxygenates in an OTO reactor comprising sending an oxygenate feed stream through a feed stream distributor into an OTO reactor, contacting the oxygenates with a catalyst to produce a mixture comprising light olefins, diolefins, unreacted oxygenate...

20060094917 - External second stage cyclones in olefin production process: The present invention comprises a process and apparatus for producing olefins from oxygenates in a reactor. This process comprises these oxygenates with a catalyst to produce a gaseous mixture comprising light olefins and by-products, sending the mixture to a single stage cyclone within said reactor to separate said catalyst from...

20060094915 - Purge gas streams to stagnant zones within oxygenate-to-olefin reactor: The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein...

20060094918 - Steam cracking of hydrocarbon feedstocks containing salt and/or particulate matter: A process for cracking a hydrocarbon feedstock containing salt and/or particulate matter, wherein said hydrocarbon feedstock containing salt and/or particulate matter is heated, then separated into a vapor phase and a liquid phase by flashing in a flash/separation vessel, separating and cracking the vapor phase which comprises less than about...

20060094919 - Isomerization catalyst and process: A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a tungstated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a phosphorus component, and at least one platinum-group metal component which...