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Class 585/253 - Isomerization


Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein the hydrogenated feedstock is treated
No. of patents: 55
Last issue date: 06/14/2011


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NumberTitleIssue Date
7960599Method for making industrial chemicals
A process for producing industrially important chemicals from renewable resources is disclosed. This “biobased” process employs readily available, renewable resources comprising fatty acids rather than exploiting fossil sources, such as coal and petroleum. In on...
06/14/2011
7888541Double bond hydroisomerization of butenes
A process is disclosed for the preferential conversion to 2-butene of a C4 stream containing 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 the presence of a fi...
02/15/2011
7442290Mesoporous 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...
10/28/2008
7273542Process and apparatus for recovering olefins
The present invention relates to a process and apparatus for recovering product from reactor effluent of a reactor for a hydrocarbon feedstream. An indigenous C4 stream is used as lean oil in a demethanizer, which facilitates significant cost and operatio...
09/25/2007
7256152Composition of catalyst and solvent and catalysis processes using this composition
A composition defined: either as comprising at least one Broensted acid, designated HB, dissolved in a liquid medium with an ionic nature of general formula Q+A−, in which Q+ represents an organic cation and A− represents an an...
08/14/2007
7175754Process for the production of low benzene gasoline
A process for the production of low benzene content gasoline is disclosed wherein a full boiling range naphtha is fractionated to produce a light naphtha, a medium naphtha and a heavy naphtha. The benzene is contained in the medium naphtha and this stream is subject...
02/13/2007
7140438Orthoester compositions and methods of use in subterranean applications
The present invention relates to methods and compositions for treating subterranean formations, and more specifically, to improved methods and compositions for generating acids for use downhole, for example, to at least partially degrade the acid-soluble portions of...
11/28/2006
6566569Conversion of refinery C5 paraffins into C4 and C6 paraffins
A process for preparing a C4- product stream and a C6 + product stream is disclosed. The process involves contacting a C5 containing paraffinic feedstock with a catalyst that includes a hydrogenation/dehydrogenation cataly...
05/20/2003
6420619Cracked gas processing and conversion for propylene production
The C3 to C6 cut from a cracking process containing propylene, butane, 1-butene, 2-butene and acetylenic and diene components including butadiene are preferentially converted to propylene. The cut is simultaneously fractionated and c...
07/16/2002
6320088Traction drive fluid
Traction drive fluids comprise a saturated polycyclic hydrocarbon compound obtained by hydrogenating a trimeric compound of a cyclopentadiene-based condensed hydrocarbon compound resulting from the Diels-Alder reaction of cyclopentadiene and then isomeriz...
11/20/2001
6048450Process for the selective reduction to the content of benzene and light unsaturated compounds in a hydrocarbon cut
A process for treating a feed comprising C5+ hydrocarbons and comprising at least one unsaturated C6+ compound including benzene, is such that the feed is treated in a distillation zone, associated with a hydr...
04/11/2000
6025305Process for producing a lubricant base oil having improved oxidative stability
The instant invention is directed to a process for producing an improved lubricating base stock having a preselected desired oxidation stability comprising the steps of: (a) hydroisomerizing a hydrocarbon wax to obtain a lubricating base stock, (b) irradi...
02/15/2000
6008164Lubricant base oil having improved oxidative stability
The instant invention is directed to a method for producing a lubricating base stock having a preselected oxidative stability comprising the steps of: (a) separating, into a plurality of fractions based on molecular shape, a hydroisomerized hydrocarbon wa...
12/28/1999
6005156Para-xylene separation process comprising pretreatment by selective hydrogenation and by activated clay
In a process for the separation of p-xylene from a feed to be treated containing a mixture of xylenes and olefinic impurities, at least a portion of the feed is circulated in an enrichment zone (14) to enrich a first fraction (15) in p-xylene and provide ...
12/21/1999
5998685Process for preparing butene oligomers from field butanes
A highly flexible process for preparing butene oligomers from field butanes. The process can be controlled to produce the desired oligomerization products by appropriate selection of the starting materials....
12/07/1999
5981818Integrated cracking and olefins derivative process utilizing dilute olefins
A novel process is provided which integrates the cracking of hydrocarbon containing feedstocks with the olefins purification and olefins derivative process utilizing dilute olefin feedstocks....
11/09/1999
5962755Process for the isomerization of benzene containing feed streams
A process for saturating benzene in a light paraffin isomerization process can accommodate varying quantities of benzene through the incorporation of progressive steps that control temperatures in the isomerization zone while performing a majority of the ...
10/05/1999
5855917Method for controlling body fat and/or body weight in animals and pharmaceutical compositions for use therein comprising 20-carbon conjugated unsaturated fatty acids
Methods of inhibiting lipoprotein lipase and controlling the body fat and the body weight of an animal employ an effective amount of at least one 20 carbon, conjugated, unsaturated, fatty acid. Pharmaceutical compositions for use in the method are also di...
01/05/1999
5834522Hydroisomerization treatment process for feeds from the fisher-tropsch process
The invention concerns a process for the hydroisomerisation treatment for feeds from the Fischer-Tropsch process. The catalyst is essentially constituted by 0.05% to 10% by weight of a precious metal and a silica (5-70%)/alumina support with a specific su...
11/10/1998
5830345Process of producing a debenzenated and isomerized gasoline blending stock by using a dual functional catalyst
A process for producing a debenzeneated gasoline blending stock from a benzene-containing refinery stream by using a dual function catalyst. The benzene-containing refinery stream contains at least 2 wt % of benzene is hydrogenated to cyclohexane and then...
11/03/1998
5770781Method for eliminating carbon oxides in feeds to a C5 and C6 paraffin isomerization process
A method for reducing the benzene content and isomerizing at least a portion of a C5 /C6 paraffinic stream using a hydrogen stream containing more than 0.1 ppmv of carbon monoxide, carbon dioxide or a mixture thereof, the method comp...
06/23/1998
5763714Process and apparatus for the production and recovery of p-xylene
A mixed aromatic stream is hydrotreated to remove olefins and fractionated to separate C9 + heavies in a distillation column reactor and the C8 and lighter material is fed to a selective adsorption unit where the para-xylene is remov...
06/09/1998
5763713Process for the isomerization of benzene containing feed streams
A process for saturating benzene in a light paraffin isomerization process can accommodate varying quantities of benzene through the incorporation of progressive steps that control temperatures in the isomerization zone while performing a majority of the ...
06/09/1998
5679241Olefin plant recovery system employing catalytic distillation
The C2 to C5 and heavier acetylenes and dienes in a thermally cracked feed stream are hydrogenated without significantly hydrogenating the C2 and C3 olefins. Additionally, the C4 and heavier olefins m...
10/21/1997
5674955Production of polyisobutenes
This invention relates to a method of producing polyisobutenes from a feedstock comprising a mixture of C4 hydrocarbons and containing isobutene and at least 5% by weight of 1-butene using a cationic polymerisation catalyst, characterised in that prior to...
10/07/1997
5663466Mixed phase benzene saturation with controlled hydrogen addition
A process for saturating benzene in a stream containing hydrocarbons and benzene maintains the benzene saturation reactor in a mixed phase at specific conditions to recover a saturation reactor effluent having a low benzene concentration and a reduced tem...
09/02/1997
5595634Process for selective hydrogenation of highly unsaturated compounds and isomerization of olefins in hydrocarbon streams
A process for treating C3 to C12 petroleum fractions, such as a light cracked naphtha to be used as an etherification feed stock in which H2 S is removed by distillation of at least the C3 fraction and mercaptan...
01/21/1997
5578196Process for reducing the benzene content of petrols
The invention concerns a process for reducing the benzene content of petrol fractions, in which hydrogenation is carried out on a feed with the following composition by weight: 40% to 80% of paraffins, 0.5% to 7% of cyclic hydrocarbons and 6% to 45% of ar...
11/26/1996
5534658Process for reducing the benzene content of petrols
The invention concerns a process for reducing the benzene content of petrol fractions and isomerizing paraffins in the presence of an isomerization catalyst comprising 4 to 15% of at least one halogen and at least one metal from group VIII deposited on a ...
07/09/1996
5453552Isomerization and adsorption process with benzene saturation
An advantageous integration of benzene saturation for a light paraffin containing feedstock in a light paraffin isomerization and adsorption system maintains isomerization conversion while reducing benzene levels. The process improves the efficiency of th...
09/26/1995
5446222Oligomers of cyclopentadiene and process for making them
The invention provides a two-step process for converting cyclopentadiene dimer to a high density fuel mixture comprising the steps of: (a) reacting said cyclopentadiene dimer in the presence of a solid catalyst comprising a porous crystalline material having a...
08/29/1995
5366616Hydrocarbon conversion process using a chromium substituted molecular sieve
This invention relates to hydrocarbon conversion processes using novel molecular sieve compositions as the catalyst. These molecular sieves contain chromium in the framework structure along with aluminum and silicon. The process of preparing the chromium-...
11/22/1994
5364997Process for converting multi-branched heavy hydrocarbons to high octane gasoline
The present invention relates to a process for upgrading multi-branched C9 + olefinic and/or paraffinic by-products of heavy hydrocarbon upgrading processes including alkylation, polymerization, and MOGD, to high octane gasoline. Feeds rich in ...
11/15/1994
5360534Isomerization of split-feed benzene-containing paraffinic feedstocks
The benzene content in a gasoline pool is reduced by an isomerization process that splits a benzene-containing C4 -C6 feedstream between at least two reaction zones and combines the feed fractions with effluent streams. The splitting...
11/01/1994
5284984Gasoline upgrading by aromatics amination
A method for upgrading an aromatics-containing charge composition boiling in the gasoline boiling range comprises i) contacting the charge composition with a nitrating agent under nitrating conditions to form a product comprising nitrated aromatics; ii) h...
02/08/1994
5235120Selective isoparaffin synthesis from naphtha
A process combination is disclosed to selectively upgrade naphtha to obtain products suitable for further upgrading to reformulated fuels. A naphtha feedstock is hydrogenated to saturate aromatics, followed by selective isoparaffin synthesis to yield ligh...
08/10/1993
5210348Process to remove benzene from refinery streams
A substantially benzene-free product suitable for gasoline blending is formed from a benzene-containing refinery stream. At least about 30% of the benzene initially present in the stream is catalytically alkylated with C2 -C4 olefins...
05/11/1993
5019661Hydroisomerisation process
Branched olefins of at least 4 carbon atoms are hydroisomerized to a less branched alkane by contact with a hydrogen containing gas and a shape selective zeolite which has at least 1 metal of the Pt group supported primarily within the channels of said ze...
05/28/1991
5003118Isomerization of benzene-containing feedstocks
The benzene content in a gasoline pool is reduced by a process that hydrogenates a benzene-containing isomerization zone feedstream. In addition to reducing the benzene concentration, the hydrogenation zone is also used to heat the isomerization zone feed...
03/26/1991
4943672Process for the hydroisomerization of Fischer-Tropsch wax to produce lubricating oil (OP-3403)
Fischer-Tropsch wax is converted to a lubricating oil having a high viscosity index and a low pour point by first hydrotreating the wax under relatively severe conditions and thereafter hydroisomerizing the hydrotreated wax in the presence of hydrogen on ...
07/24/1990
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