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| Number | Title | Issue Date |
| 7576251 | Process for the double bond hydroisomerization of butenes A process is disclosed for the preferential conversion to 2-butene of a stream containing C4 compounds including 1-butene and 2-butene. The process involves mixing the C4 stream with a first hydrogen stream to form a feed stream, hydroisomerizing the feed stream in ... | 08/18/2009 |
| 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 |
| 7361797 | Hydrocarbon conversion using nanocrystalline zeolite Y A process for alkylation of a hydrocarbon compound includes providing a catalyst including a zeolite Y having a crystal size of no more than 100 nm, and reacting an alkylatable hydrocarbon with an alkylating agent in the presence of the catalyst under alkylation rea... | 04/22/2008 |
| 7304199 | Solid acid catalyst and method of using same A catalyst composition includes an oxygen compound of an element selected from Group IVB or Group IVA of the Periodic Table of the Elements; an oxygen compound of an element selected from Group VIB or Group VIA of the Periodic Table of the Elements; and at least abo... | 12/04/2007 |
| 7301062 | Process for the selective hydrogenation of alkynes and/or dienes in an olefin-containing hydrocarbon stream A process for the selective hydrogenation of one or more alkyne and/or one or more diene in an olefin-containing hydrocarbon feed includes contacting the hydrocarbon feed with a catalyst under selective hydrogenation conditions, the catalyst including from about 0.0... | 11/27/2007 |
| 7259282 | Process for production of ethylbenzene from dilute ethylene streams An improvement in a process for the production of ethylbenzene from a dilute ethylene stream wherein an ethylene-containing stream derived from a cracking process is directed to an ethylene fractionator for separation of ethylene and ethane. The improvement includes... | 08/21/2007 |
| 7247235 | Hydrogenation of middle distillate using a counter-current reactor A process for the hydrogenation of a hydrocarbon feed includes contacting a major amount of the hydrocarbon feed with hydrogen in a counter-current manner in a first reaction zone under hydrogenation reaction conditions in the presence of a hydrogenation catalyst in... | 07/24/2007 |
| 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 |
| 7214841 | Processing C4 olefin streams for the maximum production of propylene In order to maximize the production of propylene when the external supply of ethylene is limited, the C4 cut from a hydrocarbon cracking process is first subjected to autometathesis prior to any isobutylene removal and without any ethylene addition. This ... | 05/08/2007 |
| 7211238 | Mesoporous aluminum oxide, preparation and use thereof Mesoporous aluminum oxides with high surface areas have been synthesized using inexpensive, small organic templating agents instead of surfactants. Optionally, some of the aluminum can be framework-substituted by one or more other elements. The material has high the... | 05/01/2007 |
| 7179427 | Apparatus for countercurrent contacting of gas and solids An apparatus for the countercurrent contacting of a gas and downflowing solid particles includes a housing and a plurality of baffles positioned within the housing. The baffles are arranged in at least first and second vertically spaced levels in successively lower ... | 02/20/2007 |
| 6425757 | Pyrolysis heater with paired burner zoned firing system A pyrolysis heater has the inlet sections of the process coils grouped together and the outlet sections of these same process coils also grouped together. High heat liberation hearth burners are located adjacent to the inlet sections of the coils and lowe... | 07/30/2002 |
