Chemistry of hydrocarbon compounds inventions 01/06

20060020151 - Method for determining the gas hydrate anti-agglomeration power of a water/oil system: In order to determine the gas hydrate anti-agglomeration power of a system composed of an aqueous phase dispersed in a liquid hydrocarbon phase in the presence of a gas, at least two successive cycles of hydrate formation and dissociation is carried out by cooling and reheating a sample of said...

20060020152 - Method for the low temperature selective oxidation of hydrogen contained in a hydrocarbon stream: A method for the low temperature selective oxidation of hydrogen contained in a feed comprising hydrogen and dehydrogenatable hydrocarbons and, in particular, for selectively oxidizing the hydrogen of a dehydrogenation reactor effluent. The feed is contacted under low temperature selective oxidation reaction conditions and in the presence of oxygen with...

20060020153 - Novel process for preparation of 2,6-dialkyltetralin: The present invention provides a novel process for highly selective preparation of 2,6-dialkyltetralin, a key precursor for 2,6-dimethylnaphthalene (2,6-DMN), which does not require an extra step for purifying various isomers obtained from the conventional processes for 2,6-DMN. The present invention is advantageous to improve the synthetic yield, to simplify the...

20060020154 - 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 catalyst comprising zeolite Y catalyst having an alpha value of about 2 to about 30....

20060020155 - Processes for converting oxygenates to olefins at reduced volumetric flow rates: This invention provides processes for forming light olefins from methanol and/or from syngas through a dimethyl ether intermediate. Specifically, the invention is to converting methanol and/or syngas to dimethyl ether and water in the presence of a first catalyst, preferably comprising γ-alumina, and converting the dimethyl ether to light olefins...

20060014989 - Process for preparring linear alpha olefins: A process for the preparation of linear alpha olefins having 2n carbon atoms from linear alpha olefins having n carbon atoms comprising the steps of (a) dimerizing a linear alpha olefin having n carbon atoms in the presence of a dimerization catalyst to produce a linear internal olefin having 2n...

20060014990 - Process for producing olefins: A process is described for producing olefins from a vapor product stream from an oxygenate to olefin conversion reaction, the vapor product stream comprising C2 to C4 olefins, C5+ hydrocarbons, at least one oxygenate and water. In the process, the vapor product stream is cooled to remove water therefrom and...

20060014991 - Process for producing olefins: A process is described for producing olefins from a vapor product stream from an oxygenate to olefin conversion reaction, the vapor product stream comprising C2 to C4 olefins, C5+ hydrocarbons, at least one oxygenate and water. In the process, the vapor product stream is cooled to remove water therefrom and...

20060014992 - Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks: Hydrocarbon feedstock containing resid is cracked by a process comprising: (a) heating the hydrocarbon feedstock; (b) mixing the heated hydrocarbon feedstock with steam and optionally water to form a mixture stream; (c) introducing the mixture stream to a flash/separation apparatus to form i) a vapor phase at its dew point...

20060014993 - Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks: Hydrocarbon feedstock containing resid is cracked by a process comprising: (a) heating said hydrocarbon feedstock; (b) mixing the heated hydrocarbon feedstock with steam to form a mixture stream; (c) introducing the mixture stream to a flash/separation apparatus to form i) a vapor phase comprising coke precursors existing as uncoalesced condensate,...

20060014994 - Reduction of total sulfur in crude and condensate cracking: A process for cracking hydrocarbon feedstock comprising at least one sulfur-containing compound comprising: heating the feedstock and a peroxide-containing compound, mixing the heated feedstock and peroxide-containing compound with a fluid and/or a primary dilution steam stream to form a mixture, flashing the mixture to form a vapor phase and a...

20060014995 - Aromatics hydrogenolysis using novel mesoporous catalyst system: A process for the selective ring opening of ring-containing hydrocarbons in a feed stream having at least 10% ring-containing hydrocarbons includes contacting the feed stream with a ring opening catalyst containing a metal or a mixture of metals active for the selective ring opening of the ring-containing hydrocarbons on a...

20060009663 - Reducing metal corrosion of hydrocarbons using acidic fischer-tropsch products: A process for reducing the metal corrosion of a hydrocarbonaceous liquid which causes corrosion as measured by NACE Standard TM0172-2001, said process comprising blending with the hydrocarbonaceous liquid at least 0.1 weight percent of an acidic Fischer-Tropsch product in sufficient proportion to produce a hydrocarbonaceous blend displaying reduced metal corrosion...

20060009664 - Ice method for production of hydrogen clathrate hydrates: The present invention includes a method for hydrogen clathrate hydrate synthesis. First, ice and hydrogen gas are supplied to a containment volume at a first temperature and a first pressure. Next, the containment volume is pressurized with hydrogen gas to a second higher pressure, where hydrogen clathrate hydrates are formed...

20060009665 - Hydrogenation of aromatics and olefins using a mesoporous catalyst: A process for the hydrogenation of a hydrocarbon feed containing unsaturated components includes providing a catalyst including at least one noble metal on a non-crystalline, mesoporous inorganic oxide support having at least 97 volume percent interconnected mesopores based upon mesopores and micropores, a BET surface area of at least 300...

20060009666 - Hydrogenation of aromatics and olefins using a mesoporous catalyst: A process for the hydrogenation of a hydrocarbon feed containing unsaturated components includes providing a catalyst including at least one noble metal on a non-crystalline, mesoporous inorganic oxide support having at least 97 volume percent interconnected mesopores based upon mesopores and micropores, a BET surface area of at least 300...

20060009667 - Process for continuous ruthenium-catalysed metathesis: The invention relates to a process for carrying out metathesis reactions, wherein the process is carried out continuously and a ruthenium-containing catalyst is used....

20060009668 - Process for the dehydrogenation of an unsaturated hydrocarbon: contacting in a second step a reaction product of the first step comprising the first unsaturated hydrocarbon and the second unsaturated hydrocarbon with a second dehydrogenation catalyst having a temperature parameter T2 and a selectivity parameter S2, such that T1<T2 and S1<S2....

20060009669 - Mordenite zeolite alkylation catalyst: The present invention is directed to a mordenite zeolite catalyst having a controlled macropore structure. The present invention is also directed to a mordenite zeolite catalyst composite and a process for preparing the catalyst composite. The catalyst composite exhibits reduced deactivation rates during the alkylation process, thereby increasing the life...

20060009670 - Process for improving gasoline fractions and gasoil conversion with additional treatment to increase the gasoil fraction yield: The invention relates to a process for conversion of a gasoline-range hydrocarbon feed into a gasoline fraction with a higher octane rating than that of the feedstream, and a gasoil fraction with a cetane number higher than 45, including the following steps: a) a membrane separation step (B) applied to...

20060004236 - Method of separating and converting hydrocarbon composites and polymer materials: The process described herein presents a unique method of separating and converting polymers and hydrocarbon composites to light/medium weight hydrocarbons from polymer and hydrocarbon composites waste. The method involves the removal of moisture from the hydrocarbon composite and/or polymer waste followed by or in conjunction with a catalytic reaction which...

20060004237 - Process for conversion of organic, waste, or low-value materials into useful products: The present invention addresses the processing of waste and low-value products to produce useful materials in reliable purities and compositions, at acceptable cost, and with high energy efficiency. In particular, the invention comprises a multi-stage process that converts various feedstocks such as offal, animal manures, municipal sewage sludge, that otherwise...

20060004238 - Critical phase alkylation process: A process for the production of ethylbenzene by the ethylation of benzene in the critical phase over a molecular sieve aromatic alkylation catalyst comprising cerium-promoted zeolite beta. An aromatic feedstock having a benzene content of at least 90 wt. % is supplied into a reaction zone and into contact with...

20060004240 - Pretreating a catalyst containing molecular sieve and active metal oxide: This invention relates to processes for converting oxygenates to olefins that include a step of pretreating catalyst, which comprises molecular sieve and one or more active metal oxides of one or more metals, with a hydrocarbon composition to provide an integrated hydrocarbon co-catalyst within the molecular sieve. The combination of...

20060004239 - Process for producing olefins: A process for producing olefins comprises providing a vapor product stream from an oxygenate to olefin reaction, the vapor product stream comprising C2 to C4 olefins, C2 to C6 carbonyl compounds and water. The vapor product stream is cooled to provide a first vapor effluent stream comprising no more than...

20060004241 - Isothermal method for the dehydrogenating alkanes: p

20060004242 - Low pressure olefin recovery process: A low-pressure olefins recovery process and plant are described. The feed gas 300 is compressed 302, 304 and distilled 310 at a primary distillation pressure. The overhead stream 312 is chilled 318 at a pressure less than 30 kg/cm2 (430 psia) to partially condense the overheads. The primary distillation tower...