Matches 251 - 300 out of 395 < 1 2 3 4 5 6 7 8 >
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4847431 Process for manufacturing a tertiary alkyl ether by reactive distillation  
Process for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with isobutene-containing hydrocarbons in a reaction zone comprising alternate beds of sulfonated resin catalyst and...
4847430 Process for manufacturing a tertiary alkyl ether by reactive distillation  
The invention concerns a process for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with an isobutene-containing hydrocarbon mixture. This process is characterized by the steps...
4835329 Process for producing high octane gasoline  
An integrated process for the production of alkylate and etherate rich high octane gasoline streams comprising the etherification to produce MTBE and TAME in the presence of a high stoichiometric...
4830635 Production of liquid hydrocarbon and ether mixtures  
An etherification process for reacting a hydrocarbon mixture containing C 4 -C 7 iso-olefins with excess methanol to produce tertiary alkyl methyl ethers. The improved technique comprises...
4827045 Etherification of extracted crude methanol and conversion of raffinate  
An improved process for reacting crude aqueous methanol feedstock with iso-olefinic hydrocarbons to produce C 5 + methyl tertiary-alkly ethers, which comprises: contacting the aqueous methanol...
4826507 Integrated etherification and oxygenates to gasoline process  
An integrated once through process for the production of ether-rich liquid fuels containing MTBE and TAME by etherifying a hydrocarbon feedstock containing C 4 + isoalkenes in the presence of a...
4827046 Extraction of crude methanol and conversion of raffinate  
An improved process for reacting crude aqueous methanol feedstock with tertiary-olefinic hydrocarbons to produce C 5 + methyl tertiary-alkyl ethers, which comprises: contacting the aqueous...
4820877 Etherification process improvement  
An improved etherification process is described for the manufacture of methyl tertiary alkyl ethers such as methyl tertiary butyl ether and methyl tertiary amyl ether. In one embodiment...
4816607 Integrated etherification process with recycle post treatment  
A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C 4 isoparaffins,...
4814519 Production of ethers from olefins  
A process for the production of ethers from an olefin containing feedstock. The process includes two-stages for the production of ethers which comprises, in a first stage, isomerizing an olefin...
4814517 Oxygenate removal in MTBE production  
Low concentrations of methanol and dimethyl ether in distillation column C 4 -C 5 raffinate produced in the formation of methyl tert.-alkyl ethers by the reaction of methanol with isoalkylenes...
4808270 Process and apparatus for the preparation of ether  
For the preparation of an ether, e.g., tertiary amyl methyl ether, an olefin-containing feed stream is catalytically etherified with an alcohol, e.g., methyl alcohol. The etherification product is...
4806695 Process for etherification of a dehydrogenation zone effluent  
A combined process for the dehydrogenation of C 3 -C 5 paraffins in a first zone and the conversion of olefins in a second zone improves efficiency by directly charging all but the lightest...
4797133 Process for recovery of butene-1 from mixed C4 hydrocarbons  
A process is disclosed for the recovery of butene-1 from a mixed C 4 feed stream which also contains isobutylene, butene-2, isobutane and normal butane. The C 4 feed stream is passed through an...
4792639 Process for the production of methyl ethers from branched monoolefins  
An improved process for the production of methyl ethers of the type in which methanol is reacted with a branched monoolefin in the presence of a catalytically effective amount of one or more acid...
4788365 High octane gasoline and distillates from oxygenates  
An integrated process for the conversion of methanol to high octane gasoline and distillate. Methanol is converted to olefins in the presence of zeolite type catalyst. C 4 and C 5 olefin fraction...
4778943 Skeletal isomerization of olefins over halogen-containing alkaline earth oxide catalysts  
A process for the skeletal isomerization of olefins wherein the olefins are contacted with a catalyst comprising at least one alkaline earth oxide which has been treated with a halogen compound.
4774365 Pervaporation process for separating alcohols from ethers  
The present invention is an improved process for separating alcohols from ethers and/or hydrocarbon raffinate in an etherification process. The excess alcohol reactant, which forms azeotrope...
4774364 Integrated alkylation/alkyl tertiary-alkyl ether synthesis process  
A process is disclosed for the preparation of alkyl tertiary-alkyl ether concurrent with the alkylation of isoparaffins with olefins. The composite zeolite catalyst is reactivated in the alkyl...
4761504 Integrated process for high octane alkylation and etherification  
A process is disclosed for the simultaneous alkylation of light hydrocarbons to produce gasoline blending components and the etherification of an isoolefin to produce an ether. The etherification...
4760210 Partial oxidation system  
Method and apparatus for partial oxidation of hydrocarbonaceous gases, wherein a hydrocarbonaceous gas is preheated, reacted with oxygen, and quenched by means of a rotating matrix comprising...
4754078 Integrated etherification process with isomerization pretreatment  
A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C 4 isoparaffins,...
4749816 Chemical process  
A process for preparing an acetal or a ketal comprises contacting an olefin with an alcohol at elevated temperature in the presence of a dihydrocarbyl peroxide and a catalyst comprising palladium...
4748281 Recovery of methanol in an MTBE process  
An adsorbent is used to recover methanol in unreacted C 4 's from the MTBE process. Methanol is desorbed from the mixture in a closed loop regeneration system utilizing a circulating vapor at an...
4740631 Process for preparing ethers  
In the process for preparing methyl tert.-alkyl ether comprising the steps of (a) contacting and reacting in the liquid phase a reaction mixture formed by combining a stream consisting essentially...
4740632 Process for removing methanol from alkylation unit feed stream  
A process of removing methanol from a mixed stream comprising methanol and at least one hydrocarbon and utilizing the hydrocarbon as feed for an acid catalyzed alkylation unit which produces a...
4731489 Process for production of gasoline blending stock  
A process for producing a gasoline blending stock of methyl tertiary butyl ether and tertiary butyl alcohol wherein a first catalytic etherification of isobutene and methanol produces methyl...
4731490 Process for methyl, tertiary butyl ether production  
A process for the production of methyl tertiary butyl ether comprising dimerizing ethylene to form a first butene-containing material; isomerizing the first butene-containing material to produce a...
4714788 Tertiary olefin process  
In a process for separating C 4 to C 7 tertiary mono-olefins(s) present in a C 4 to C 7 hydrocarbon mixture containing diolefins which comprises selectively reacting said tertiary mono-olefin...
4714787 Production of ethers from linear olefins  
A catalytic process is provided for the manufacture of ethers by reacting a linear monoolefin with a primary or secondary alcohol having up to 4 carbon atoms. The process selectively forms methyl...
4695662 Light paraffin dehydrogenation process  
A process is disclosed for the catalytic dehydrogenation of propane or butanes. The vapor phase reaction zone effluent stream is contacted with a heavy absorption liquid and then with a light...
4684757 Process for converting methanol to alkyl ethers, gasoline, distillate and alkylate liquid hydrocarbons  
A multistage process for producing ethers from lower aliphatic oxygenate feedstock, such as methanol. Feedstock is catalytically converted in a primary catalyst stage at elevated temperature in...
4665220 Use of stabilized pillared interlayered clays as catalysts in reactions capable of catalysis by protons  
A method for carrying out processes capable of catalysis by protons using as catalyst a stabilized pillared interlayered clay.
4664675 Process for upgrading olefinic gasolines by etherification  
The invention concerns a process for upgrading olefinic gasolines containing C 5 hydrocarbons, but free of C 4 hydrocarbons, by etherification. It is characterized in that the tertiary olefins of...
4665237 Process for producing methyl tertiary butyl ether  
A process for producing methyl tertiary butyl ether is disclosed, comprising reacting isobutylene and methanol using a hydrocarbon mixture of 4 carbon atoms containing isobutylene and methanol as...
4647703 Process for producing a hydrocarbon cut of high octane number by etherification of olefins  
Process for producing a hydrocarbon cut of high octane number by etherification of an olefin-containing hydrocarbon cut. The olefinic cut, to which methanol is added, passes into an etherification...
4624748 Catalyst system for use in a distillation column reactor  
A novel catalyst system for use in a distillation column reactor is disclosed including annularly-defined spaces within the reactor comprised of vapor-permeable material with packed catalyst and...
4605787 Process for the preparation of alkyl tert-alkyl ethers  
Process for the preparation of alkyl tert-alkyl ethers which comprises reacting a primary alcohol with an olefin having a double bond on a tertiary carbon atom in the presence of an acidic zeolite...
4603225 Process for separating dimethyl ether from a hydrocarbon mixture containing the same  
A process for separating dimethyl ether from a hydrocarbon mixture which comprises contacting the hydrocarbon mixture with an aqueous solution containing a polar oxygenated hydrocarbon having a...
4593135 Method for promoting the activity and/or extending the life of cation-exchangeable layered clay catalysts in proton-catalyzed reactions  
A method for promoting the activity and/or extending the life of a cation-exchangeable layered clay catalyst in reactions susceptible to catalysis by protons which method comprises the addition to...
4584415 Formation of alkyl ethers from alcohols and alkenes using AMS-1B crystalline borosilicate  
A process to form an ether comprises contacting an alkene and an alcohol under conversion conditions with an AMS-1B borosilicate catalyst composition.
4581474 Hydrocarbon conversion process  
In a combination alkylation-methyltertiary butyl ether (MTBE) operation, the unreacted C 4 olefinic hydrocarbons produced by etherification are contacted with molecular sieves to absorb 2-butenes...
4575567 Adsorbent regeneration in etherification processes  
An improved method is disclosed for regenerating adsorbents used in an integrated process for the production of ethers such as methyl tertiary butyl ether by the reaction of an alcohol with an...
4571439 Method for controlled oligomerization/etherification of propylene  
Propylene contained in mixed C 3 /C 4 streams containing at least 5 wt. % isobutene, for example, catalytic cracker offgas, may be recovered as a useful gasoline component by reacting in the...
4570026 Production of isobutene from methyl tertiary butyl ether  
MTBE can be dissociated with high selectivity to isobutene and methanol over acid action exchange resin catalysts using very high LHSV, e.g. of 7 to 35 at pressure drops of 0.5 to 50 psig through...
4558168 Production of high purity butene-1 from an n-butane feedstock  
This invention relates to a process for producing a high purity butene-1 product from n-butane via a dehydrogenation process. In one embodiment of the process the n-butane is dehydrogenated over a...
4554386 Process for the preparation of methyl tertiary butyl ether  
A process for the preparation of methyl tertiary butyl ether (MTBE) in two stages: the first stage comprising the reaction of isobutene with methanol in the presence of an acid catalyst,...
4546204 Process for the manufacture of methyl t-butyl ether  
The invention concerns a process for the manufacture of methyl t-butyl ether in which: a hydrocarbon feedstock is cracked to give an ethylene-rich stream; an isobutane-rich stream is separated from...
4546206 Process for producing methyl tert. alkyl ether  
Methyl t-butyl ether and methyl t-amyl ether are produced by reacting methanol with isobutene and isoamylene, respectively, at a total methanol/isoolefine mole ratio of 1-1.2:1 in a series of...
4544776 Process for separating methanol from the reaction products obtained in the etherification of C.sub.4 through C.sub.7 isoolefins with methanol  
The reaction product from etherification of C 4 -C 7 isoolefins with methanol in the presence of an acidic catalyst is washed with water in the presence of inert hydrocarbons thereby removing...
Matches 251 - 300 out of 395 < 1 2 3 4 5 6 7 8 >