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7411101 |
Production of alkylaromatic compounds
A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and...
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7268265 |
Apparatus and process for light olefin recovery
The present invention relates to a process and apparatus for the production of light olefins comprising olefins having from 2 to 3 carbon atoms per molecule from a feedstock containing heavier...
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RE39222 |
Process for preparing 2,6-dialkylnaphthalene
A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers,...
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6646172 |
Preparation of propene
A multistage process for preparing propene, in which the first stage is the reaction of 1-butene, 2-butene and isobutene to give propene, 2-pentene and 2-methyl-2-butene in the presence of a...
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6339179 |
Production of alkyl aromatics by passing transalkylation effluent to alkylation zone and to product recovery zone
A process for producing alkyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. One portion of the transalkylation reaction zone effluent passes to an...
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6303839 |
Process for producing polymer grade olefins
The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises...
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6194625 |
Alkylation by controlling olefin ratios
Disclosed are various embodiments for alkylating olefins and isoparaffins in the presence of an acid to reduce and/or control acid consumption or maximize and/or control the octane number of the...
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6150578 |
Recovery process for wet aromatic alkylation and dry aromatic transalkylation
A separation arrangement for a cumene process that operates with a relatively wet feed to an alkylation zone and relatively dry feed to a transalkylation zone reduces utilities and capital expenses...
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6011190 |
Process for preparing dialkylnaphthalene
2,6-Dialkylnaphthalene is prepared from a feedstock comprising naphthalene and an alkylating agent, by a process comprising the steps: (I) transalkylating isomers of dialkylnaphthalene and...
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5977420 |
Dual-loop xylene isomerization process
A method for increasing the efficiency of xylene isomerization by using a two stage isomerization process. In the first stage of the process, a C 9 + aromatics feedstock is subjected to...
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5959168 |
Zeolite-based ethylabenzene process adaptable to an aluminum chloride-based ethylbenzene plant
A zeolite-based ethylbenzene process which is suitable for retrofitting aluminum chloride-based ethylbenzene plants. The process involves alkylating benzene with ethylene in an alkylation zone in...
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5849965 |
Multistage alkylation process
In a multistage process, a relatively unreactive paraffinic substrate is alkylated in a primary stage while a more reactive aromatic substrate is alkylated in a secondary stage wherein at least a...
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5750821 |
Method for oxidative coupling of methane comprising catalytic cracking
The following steps are conducted for producing a hydrocarbon having a carbon number of at least 2: a coupling step, in which a coupling feed gas containing methane and a gas containing oxygen are...
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5498815 |
Preparation of synthetic oils from vinylidene olefins and alpha-olefins
A synthetic oil is made by a process comprising the steps of (a) reacting a vinylidene olefin in the presence of a catalyst to form an intermediate mixture which contains at least about 50 weight...
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5447622 |
Integrated catalytic cracking and olefin producing process using staged backflow regeneration
Disclosed is a method which combines catalytic cracking and olefin production using a coked catalytic cracking catalyst as a dehydrogenation catalyst to dehydrogenate an alkane feed stream and form...
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5446223 |
Alkylation of organic aromatic compounds
The aging rate of the catalyst in a process for the concurrent alkylation of aromatic with olefin and distillation of reaction components (reactants and products) in a distillation column reactor...
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5386071 |
Process for producing aromatics from a C.sub.5 /C.sub.6 feedstream
This invention relates to a process for convening C 5 /C 6 hydrocarbons to aromatic products, e.g., benzene, toluene, etc. The process involves first flowing the C 5 /C 6 feedstream to a first...
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5364997 |
Process for converting multi-branched heavy hydrocarbons to high octane gasoline
The present invention relates to a process for upgrading multi-branched C 9 + olefinic and/or paraffinic by-products of heavy hydrocarbon upgrading processes including alkylation, polymerization,...
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5336820 |
Process for the alkylation of benzene-rich gasoline
A process is disclosed for enhancing the alkylation conversion rate of a benzene-rich gasoline boiling range hydrocarbon feedstream alkylated with C 2 -C 5 olefins. The process comprises...
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5284986 |
Upgrading of normal pentane to cyclopentene
This invention is a process of converting n-pentane to cyclopentene. In accordance with a preferred embodiment n-pentane feed is converted in a dual temperature stage-dual catalyst process without...
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5283385 |
Upgrading of normal pentane to cyclopentane
This invention is a process of converting n-pentane to cyclopentane. In accordance with a preferred embodiment of the invention, n-pentane feed is converted in dual temperature stage process...
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5177301 |
Method of separating isobutylene from a C-4 hydrocarbon fraction using a heteropoly acid on an inert support
Disclosed is a two-step method for separating isobutylene from a C-4 hydrocarbon fraction comprising: a) Reacting the C-4 fraction with a glycol in the presence of a catalyst comprising...
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5157180 |
Alkylation and transalkylation processes
A process for producing an alkylated organic compound via alkylation and/or transalkylation in which an organic feedstock is contacted with an organic reactant in the presence of a catalyst under...
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4944849 |
Extractive distillation of cycloalkane/alkane feed employing solvent mixture
A mixture of (a) at least one saturated C5-C9 alcohol (preferably cyclohexanol) and (b) at least one sulfolane (preferably unsubstituted sulfolane, cyclotetramethylene sulfone) is used as solvent...
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4925996 |
Two stage process for catalytic conversion of olefins to higher hydrocarbons
A process is disclosed for converting a feedstock containing ethylene to produce heavier hydrocarbons in the gasoline or distillate boiling range including the steps of contacting the olefins...
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4922048 |
Medium-pore zeolite olefinic naphtha by-product upgrading
A process is provided for upgrading the olefinic gasoline by-product of low-severity medium-pore zeolite catalyzed hydrocarbon conversion processes including catalytic dewaxing and olefin...
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4899011 |
Xylene isomerization process to exhaustively convert ethylbenzene and non-aromatics
A new xylene isomerization process which is capable of converting ethylbenzene and non-aromatic exhaustively while selectively converting xylenes to thermal equilibrium in mixed EB/xylene feeds is...
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4899003 |
Process for oxydehydrogenation of ethane to ethylene
A process for the oxydehydrogenation of ethane to ethylene in a reaction system of open series connected stages, includes changing the total water and acetic acid content in the output gaseous...
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4891457 |
Multistage process for converting olefins to heavier hydrocarbons
A staged reactor technique for converting ethene-rich olefinic feedstock to heavier hydrocarbons, particularly gasoline and distillate range products. By employing low temperature and high...
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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...
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4774376 |
Production of liquid products from aliphatic hydrocarbons
This invention relates to a process for producing liquid products e.g. gasoline blending components by conversion of a mixed paraffin/olefin gaseous feedstock over two types of catalysts. In a...
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4579999 |
Multistage process for converting oxygenates to liquid hydrocarbons with aliphatic recycle
A process for converting oxygenated feedstock, such as methanol, dimethyl ether or the like, to liquid hydrocarbons. In the primary catalyst stage the feedstock is contacted with zeolite catalyst...
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4511747 |
Light olefin conversion to heavier hydrocarbons with sorption recovery of unreacted olefin vapor
In the conversion of light olefins to heavier hydrocarbons, an improved recovery technique is provided for selectively removing unreacted light olefins from a catalytic reactor effluent. This...
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4431854 |
Continuous preparation of ethylbenzene in a heterogeneous-phase reaction
A process for the continuous preparation of ethylbenzene in a heterogeneous-phase reaction by alkylating benzene with ethylene in the presence of a catalyst based on a complex organic aluminum...
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4239927 |
Removal of organic chlorides from synthetic oils
In producing synthetic hydrocarbon oils by polymerization of olefins using aluminum halide as the catalyst, organic halides are produced. These are corrosive to metal equipment and are poisonous to...
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4238628 |
Polyalkylaromatics undegraded during alkylation
Process for the production of undegraded alkylated aromatic compounds by alkylating an aromatic compound with a C 3 or higher olefin polymer having terminal ethylene units.
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4209653 |
α-Olefin dimer isomerization using organo-halogens
A process for isomerization of α-olefin dimers which comprises dimerizing a lower α-olefin with a Ziegler type catalyst comprising a nickel compound and an organo-aluminum compound, and then...
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4179473 |
Production of monoalkyl aromatics
Alkylation of an aromatic is provided in a reactor having a central alkylation zone, and a surrounding transalkylation zone. The reaction mixture flows cocurrently through the alkylation zone and...
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4152366 |
Optically active 3-methyl-pentene-1
Optically active compounds are prepared from optically inactive unsaturated hydrocarbons by reacting at least one unsaturated hydrocarbon in the presence of a catalyst prepared by combining a...
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4152365 |
Selective hydrogenation of polyenes
A feedstock comprising olefinic hydrocarbons having more than one double bond per molecule is selectively hydrogenated to produce hydrocarbons having less unsaturation relative to the feedstock by...
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3965018 |
Process for preparing a concentrate of a polyalpha-olefin in a lubricating oil base stock
A process for preparing a concentrate of a polyalpha-olefin in a hydrotreated lubricating oil base stock by conditioning the base stock in the presence of hydrogen and a Ziegler-Natta type catalyst...
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3953538 |
Alkylation process startup procedure
A startup procedure for an alkylation process in which a stream of an olefinic material is mixed with an acid stream and polymerized to cause formation of a polymeric diluent for the high strength...
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3544653 |
PREPARATION OF OLEFIN FEEDS FOR ACID RECOVERY PROCESSES
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3542890 |
ALKYLATION AND ISOMERIZATION PROCESS
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3536772 |
PROCESS FOR THE PRODUCTION OF MONOALKYLBENZENES
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3476825 |
FORMATION AND REGENERATION OF CATALYST IN AN ALKYLATION AND ISOMERIZATION PROCESS
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3422162 |
PRODUCTION OF HEAVY ALKYLATE
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3395191 |
Production of t-butyl-m-xylene
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3352932 |
Two-stage isomerization
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3116340 |
Process for converting alkylated aromatic hydrocarbons
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