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| Number | Title | Issue Date |
| 5202015 | Process for distillate dewaxing coincident with light olefin oligomerization Process conditions and process configuration have been discovered for the concurrent but independent catalytic reaction of waxy distillate and light olefins feedstocks that simultaneously results in the dewaxing of distillate feedstock and the oligomeriza... | 04/13/1993 |
| 5191144 | Olefin upgrading by selective conversion with synthetic mesoporous crystalline material In the process of olefin disproportionation, a feedstock containing predominatly mono-olefin the feedstock is charged at elevated temperature into a catalytic conversion zone in contact with mesoporous acid olefin conversion catalyst under selective olefi... | 03/02/1993 |
| 5188725 | Fluidized catalyst process for production and etherification of olefins An improvement in iso-olefin etherification is obtained in an integrated process combining a fluidized catalytic cracking reaction and a fluidized catalyst etherification reaction wherein zeolite catalyst particles are withdrawn in partially deactivated f... | 02/23/1993 |
| 5177279 | Integrated process for converting methanol to gasoline and distillates An integrated process for the conversion of methanol feed to gasoline and distillate range liquid hydrocarbons comprising the steps of splitting the methanol feed into two portions, contacting the first portion of the methanol feed with a medium-pore shap... | 01/05/1993 |
| 5176719 | Upgrading C4 mixed hydrocarbons by transhydrogenation and isobutene etherification A technique for converting olefinic light hydrocarbons rich in butenes and butanes to ether-rich liquid fuels including etherification and transhydrogenation operations. The preferred process includes: reacting a mixed C4 hydrocarbon stream containing iso... | 01/05/1993 |
| 5167937 | Production of gasoline and ether from methanol with feedstock extraction An integrated reactor system for converting methanol or the like to ether and gasoline hydrocarbons. Alcohol feedstock containing water is extracted with olefinic liquid and reacted catalytically to produce tertiary ether. Unreacted alcohol and olefin vap... | 12/01/1992 |
| 5166455 | Process for the production of tertiary alkytl ethers from FCC light naphtha A process has been discovered for the conversion of C5 -C7 olefinic hydrocarbons, such as those contained in FCC light naphtha, to iso-butene-rich and isoamylene-rich streams in an integrated process for the production of MTBE and TA... | 11/24/1992 |
| 5166454 | Etherification process with hydrogen rejuvenation A multistage process for etherifying C4+ aliphatic hydrocarbon feedstock containing isoalkane including the step of contacting the hydrocarbon feedstock with dehydrogenation catalyst at elevated temperature under dehydrogenation reac... | 11/24/1992 |
| 5164071 | Fluidized catalyst process for upgrading olefins An improvement in iso-olefin production without substantial decrease in overall yield is obtained in an integrated process combining a fluidized catalytic cracking reaction and a fluidized catalyst olefin interconversion reaction when crystalline medium p... | 11/17/1992 |
| 5160424 | Hydrocarbon cracking, dehydrogenation and etherification process A method for upgrading paraffinic naphtha to high octane fuel by contacting a feedstock, such as C7-C22 fresh virgin naphtha, with porous acid cracking catalyst under low pressure selective cracking conditions effective to produce C4 -C5 isoalkenes and C4... | 11/03/1992 |
| 5154801 | Advances in product separation in DIPE process In the diisopropyl ether production process, the distallation step for the separation of aqueous IPA recovered from the DIPE extraction operations is modified to avoid carrying out the distillation under conditions that yield IPA-water azeotrope providing... | 10/13/1992 |
| 5146943 | Apparatus for controlling the flow of a process fluid into a process vessel A process vessel has an inlet for receiving a process fluid and an outlet for exhausting process fluid into the atmosphere should the pressure within the vessel exceed a preset limit. A pneumatic safety device positioned within such inlet shuts down the f... | 09/15/1992 |
| 5146032 | Integrated process for converting methanol to gasoline and distillates An integrated process comprising the steps of pressurizing a C3+ olefin hydrocarbon stream and a methanol feed and contacting the C3+ hydrocarbon stream and methanol feed in a first reaction zone with a medium-p... | 09/08/1992 |
| 5146029 | Olefin interconversion by shape selective catalysis Light olefins are converted to isoalkene-rich hydrocarbon products, e.g., isobutene and isoamylenes with zeolite MCM-22 catalyst.... | 09/08/1992 |
| 5138102 | Reactor quenching for catalytic olefin hydration in ether production A process for production of ether by hydration and etherification of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a plurality of catalytic reaction zones containing porous solid metal oxide acid... | 08/11/1992 |
| 5134243 | Catalytic oligomerization process using synthetic mesoporous crystalline material A process for upgrading olefins employing new synthetic catalyst of ultra-large pore crystalline material. The new crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 gra... | 07/28/1992 |
| 5134241 | Multistage olefin upgrading process using synthetic mesoporous crystalline material A process for upgrading olefinic feedstocks containing lower olefins employing new synthetic catalyst of ultra-large pore crystalline material. The new crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption ... | 07/28/1992 |
| 5134242 | Catalytic olefin upgrading process using synthetic mesoporous crystalline material A process for upgrading aliphatic feedstocks containing lower olefins employing new synthetic catalyst of ultra-large pore crystalline material. The new crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption... | 07/28/1992 |
| 5132467 | Process for the conversion of normal alkenes to tertiary alkyl ethers A process is disclosed for the production of tertiary alkyl ethers wherein linear olefins, particularly n-butene, are isomerized in the vapor phase at high temperature in contact with shape selective metallosilicate catalyst to produce iso-olefin vapor, p... | 07/21/1992 |
| 5130101 | Reactor system for conversion of alcohols to ether-rich gasoline Methanol or other alcohol is converted to high octane gasoline components in an integrated apparatus wherein crude aqueous alcohol feedstock is extracted with a liquid extractant stream containing C4 + iso-olefin and reacted to form tertiary-al... | 07/14/1992 |
| 5112519 | Process for production of biodegradable surfactants and compositions thereof This invention relates to processes for making biodegradable surfactant. The process comprises several steps including an optional step. The first step is directed to reacting olefins with ZSM-23 catalyst to form oligomers having the formula (C3 | 05/12/1992 |
| 5113030 | High viscosity index lubricant compositions Novel synthetic lubricants having high viscosity index are made from lower olefins. These materials have a viscosity above about 2 cS at 100° C. and viscosity index above about 130 and are characterized by internal methyl groups attached to side chain te... | 05/12/1992 |
| 5113024 | Process for product separation in the production of di-isopropyl ether In the instant invention the effluent from the DIPE reactor is separated in a novel separation process that includes, in one embodiment, two extraction steps serially combined to initially separate IPA from the reaction products by extraction with water. ... | 05/12/1992 |
| 5108719 | Reactor system for ether production Isopentene, or isoamylene, conversion to methyl tert-amyl ether can be substantially improved while high conversion of isobutylene to methyl tert-butyl ether can be maintained by carrying out the overall etherification process with alkanol in a staged man... | 04/28/1992 |
| 5106389 | Process for conversion of light paraffins to alkylate in the production of tertiary alkyl ether rich gasoline A process is disclosed for the production of high octane alkyl tertiary alkyl ether rich gasoline and gasoline rich in alkylated aromatics. It is disclosed that unreacted C3 -C4 hydrocarbon fraction of etherification feedstock plus u... | 04/21/1992 |
| 5105038 | Synthetic polyolefin lubricant blends Synthetic lubricant blends exhibiting superior lubricant properties such as high viscosity index, including mixtures of oligomeric products of shape selective catalysis with other lubricants, such as high viscosity index poly-alpha-(-)olefins lubri... | 04/14/1992 |
| 5102428 | Integrated process for the production of diisopropyl ether and gasoline A process is disclosed for integrating etherification to produce diisopropyl ether (DIPE) with processes to convert oxygenates and hydrocarbons to gasoline boiling range hydrocarbons in a manner which eliminates the requirement to recycle unreacted C... | 04/07/1992 |
| 5100534 | Hydrocarbon cracking and reforming process An improved process for upgrading paraffinic naphtha to high octane fuel by contacting a naphtha feedstock, such as virgin naphtha feedstock stream containing predominantly C7 -C12 alkanes and naphthenes, with solid medium pore acid ... | 03/31/1992 |
| 5100533 | Process for production of iso-olefin and ether Process and apparatus for upgrading paraffinic naphtha to high octane fuel by contacting a fresh virgin naphtha feedstock stream medium pore acid cracking catalyst comprising MCM-22 zeolite under low pressure selective cracking conditions effective to pro... | 03/31/1992 |
| 5095159 | Ether and hydrocarbon production An integrated process is disclosed that substantially reduces the cost of producing MTBE and other alkyl tertalkyl ethers by eliminating a major portion of the equipment and operating costs associated with the downstream processing of the etherification r... | 03/10/1992 |
| 5073351 | Production of middle distillate range hydrocarbons by light olefin upgrading An oligomerization system is provided for upgrading lower olefins to distillate hydrocarbons, especially useful as high quality jet or diesel fuels. The olefinic feedstock is reacted over a shape selective acid zeolite, such as ZSM-5, to oligomerize feeds... | 12/17/1991 |
| 5069684 | Fuel and lube additives from polyether derivatives of polyamine alkenyl succinimides The present invention discloses superior fuel and lubricant additives prepared by the acylation of alkyl or alkenyl succinimides with the polyether half-esters of dicarboxylic acids. The polyether half-esters of dicarboxylic acids are grafted onto the pol... | 12/03/1991 |
| 5064623 | Integrated system for extraction of crude alcohol and co-conversion raffinate with olefin An improved reactor system reacts crude aqueous methanol feedstock with iso-olefinic hydrocarbons to produce C5+ methyl t-alkyl ethers. The system includes an extractor for contacting the aqueous methanol feedstock with a liquid hyd... | 11/12/1991 |
| 5059738 | Method for reactivating MTG process catalyst It is disclosed that in a fixed bed process for the conversion of C1 -C4 oxygenates in contact with acidic, medium pore, shape selective metallosilicate catalyst particles to produce gasoline boiling range hydrocarbons, including the... | 10/22/1991 |
| 5049360 | Multi-stage conversion of alkanes to gasoline An improved reactor system for hydrocarbon processing, employing an external catalyst cooler ("ECC") for dehydrogenating and cracking an alkane stream by contacting it with a fluid catalytic cracking ("FCC") catalyst to produce olefins. Advantageously, th... | 09/17/1991 |
| 5047070 | Integrated process for production of gasoline and ether from alcohol with feedstock extraction Alcohol feedstock containing water is extracted with olefinic liquid and reacted catalytically to produce tertiary ether. Unreacted alcohol and olefin vapor separated from etherification effluent is converted along with aqueous alcoholic raffinate in a ze... | 09/10/1991 |
| 5045287 | Multireactor system for conversion of methanol to gasoline and distillate A reactor system for increased production of olefinic gasoline incorporating the integration of olefins to gasoline conversion under moderate severity conditions in contact with medium pore catalyst with oxygenates to olefin conversion. The effluent produ... | 09/03/1991 |
| 5043517 | Upgrading light olefin fuel gas in a fluidized bed catalyst reactor and regeneration of the catalyst Process for the continuous conversion of light olefin gas feed containing ethene, propene and butene to produce heavier hydrocarbons by contacting the light olefin feed in a fluidized bed reaction zone with a medium pore molecular sieve zeolite catalyst u... | 08/27/1991 |
| 5041690 | Conversion of alcohols to ether-rich gasoline Methanol or other alcohol is converted to high octane gasoline components by an integrated process wherein crude aqueous alcohol feedstock is extracted with a liquid extractant stream containing C4 +iso-olefin and reacted to form tertiary-alkyl... | 08/20/1991 |
| 5034565 | Production of gasoline from light olefins in a fluidized catalyst reactor system A improved process is provided for upgrading light olefins from hydrocarbon cracking, such as light crackate gas containing ethene, propene and other C1 -C4 lower aliphatics. The process comprises the steps of: maintaining an oligome... | 07/23/1991 |
