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7566394 |
Enhanced solvent deasphalting process for heavy hydrocarbon feedstocks utilizing solid adsorbent
A solvent deasphalting of crude oil or petroleum heavy fractions and residues is carried out in the presence of a solid adsorbent, such as clay, silica, alumina and activated carbon, which adsorbs...
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7435865 |
Method for separating hydrocarbons and use of a zeolite therefor
A method for separating a mixture of hydrocarbons into fractions enriched in linear, mono-branched, or multi-branched hydrocarbons is disclosed. In particular, mono-branched alkanes are separated...
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6805790 |
Process and an apparatus for preparation of petroleum hydrocarbon solvent with improved color stability from nitrogen rich crude oil
A process and an apparatus for the preparation of petroleum hydrocarbon solvent with improved color stability from crude oils having high concentration of nitrogenous compounds which comprises...
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6407301 |
Ethylene production by steam cracking of normal paraffins
An adsorptive separation process for preparing the separate feed streams charged to naphtha reforming unit and a steam cracking unit is presented. The feed stream to the overall unit is...
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6353144 |
Process for chromatographic separation of a C5-C8 feed or an intermediate feed into three effluents, respectively rich in straight chain, mono-branched and multi-branched paraffins
For producing three effluents which are respectively rich in straight chain paraffins, in mono-branched paraffins, and in di-branched and tri-branched paraffins possibly with naphthenic and/or...
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6284200 |
Flushing apparatus in a simulated mobile bed adsorption unit comprising two fluid distribution lines, and the use thereof
A simulated moving bed flushing apparatus and its use are described. The adsorber comprises a plurality of beds (10, 11) of adsorbent, each bed being connected to a distribution means (5)...
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6261458 |
System for alternately merging at least four fluids and its application in a separation process in a simulated moving bed
A system that makes it possible to merge at least four fluids with a column for separating a feedstock, for example, in a simulated moving bed, comprises at least one trunnion-mounted ball valve,...
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6252127 |
Process for monomethyl acyclic hydrocarbon adsorptive separation
Monomethyl branched C 10 -C 15 paraffins or olefins are recovered from a mixture comprising other nonnormal hydrocarbons such as di-isoparaffins, di-isoolefins and aromatics by adsorptive...
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6171471 |
Heavy oil upgrading process (LAW813)
The present invention is a slurry-type process for upgrading heavy oils to FCC and S/C feeds under temperature and pressure conditions similar to MSHP, but employing catalysts in concentrations...
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6156950 |
Process for separating a C5-C8 feed or an intermediate feed into three effluents, respectively rich in straight chain, non-branched and multi-branched paraffins
For producing three effluents which are respectively rich in straight chain paraffins, in mono-branched paraffins, and in di-branched and tri-branched paraffins possibly with naphthenic and/or...
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5814208 |
Hydrocarbon catalytic cracking process
Hydrocarbon fluid catalytic cracking (FCC) plants are debottlenecked by subjecting part or all of the wet gas stream leaving the main fractionator overhead receiver to pressure swing adsorption to...
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5730860 |
Process for desulfurizing gasoline and hydrocarbon feedstocks
An apparatus and method for treating a liquid hydrocarbon stream useful as a precursor for transportation fuel and which contains an unacceptably high level of heteroatom compounds is provided for...
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5643442 |
Membrane process for enhanced distillate or hydrotreated distillate aromatics reduction
Distillate or hydrotreated distillate effluent is separated into an aromatics rich permeate and an aromatics lean retentate by use of a permselective membrane with the aromatic rich permeate being...
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5635055 |
Membrane process for increasing conversion of catalytic cracking or thermal cracking units (LAW011)
The yield and quality of products secured from cracking units is increased by the process of subjecting the product stream secured from such cracking unit to a selective aromatics removal process...
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5463167 |
Mercury removal by dispersed-metal adsorbents
A method of removing contaminants from a hydrocarbon stream which involves contacting the hydrocarbon stream containing a heavy-metal contaminant with a porous material under conditions suitable...
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5345029 |
Determining fractions of petroleum fuels by supercritical fluid chromatography
Hydrocarbon oils such as diesel fuels, turbine fuels and intermediate distillates may be subjected to quantitative analysis of their saturate, aromatic and polar components by supercritical fluid...
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5334308 |
Reduction of jet engine smoke emissions by contacting jet fuel with a carbon molecular sieve adsorbent
The present invention is a process for reducing the smoke emissions from a jet fuel engine by combusting a jet fuel range hydrocarbon in a jet engine wherein prior to combusting the jet fuel in the...
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5300218 |
Reduction of diesel engine particulate emissions by contacting diesel fuel with a carbon molecular sieve adsorbent
This invention is a method for reducing the particulate emissions tendency of diesel fuel. Also the piston ring sticking, and deposit formation tendency of diesel fuel on the injector and...
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5268091 |
Method for removing arsenic and phosphorus contained in liquid hydrocarbon cuts, nickel based retaining material
A method for removing arsenic and/or phosphorus from a petroleum charge with a retaining material comprising: (a) from 60 to 97% of a carrier containing, by weight, from 1.5 to 60% of oxide of...
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5207894 |
Removal of aromatic color bodies from aromatic hydrocarbon streams
This invention provides a process to remove aromatic color bodies, particularly oxygen or sulfur containing aromatics from a C 8 -11 aromatic hydrocarbon stream having a boiling range between about...
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5190633 |
Hydrocracking process with polynuclear aromatic dimer foulant adsorption
A process for separation and removal of stable polycyclic aromatic dimer foulants from refinery process streams by selectively adsorbing the foulants while eluting non-fouling smaller-ringed...
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5173173 |
Trace contaminant removal in distillation units
A hydrocarbon feedstock is simultaneously distilled into two or more fractions while trace concentrations of contaminants in the feedstock are absorbed onto a sorbent packing material during...
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5171923 |
Recycle for process for purification of linear paraffins
A process for purifying linear paraffins in which a hydrocarbon feedstream containing linear paraffins contaminated with aromatics, sulfur-, nitrogen-, and oxygen-containing compounds, and color...
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5133851 |
Process for reducing the metal content of a hydrocarbon mixture
Process for reducing the metal content of a hydrocarbon feed mixture by reverse osmosis, comprising contacting the feed mixture substantially boiling in the range between about 100° and about...
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5132486 |
Adsorption-desorption separation process for the separation of low and high octane components in virgin naphthas
An improved adsorption-desorption process is disclosed for separating low octane components from field natural gasoline and virgin naphthas. The low octane materials may be further separated into...
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5124023 |
Continuous removal of polynuclear aromatics from hydrocarbon recycle oil
Fused polynuclear aromatic compounds (PNAs) are continuously removed from a recycle oil stream in a hydrocracking process. An adsorption bed removes the PNAs from the recycle oil, a desorbing...
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5114689 |
Integrated process for the removal of sulfur compounds from fluid streams
The present invention relates to a new and integrated process involving the utilization of a primary adsorption bed containing a regenerable, physical adsorbent and an auxiliary sorption bed...
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5109139 |
Process control of process for purification of linear paraffins
A process for purifying linear paraffins in which a hydrocarbon stream containing linear paraffins contaminated with aromatics, sulfur-, nitrogen-, and oxygen-containing compounds, and color...
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5108968 |
Process for treating a material wherein the material is suspended in a gaseous atmosphere
A process for treating catalytic particles in a vertical chamber is disclosed. The catalytic particles comprise spent catalysts from such hydroprocesses as hydrocracking and hydroreforming. The...
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5098556 |
Treatment of off-specification white mineral oil made by two stage hydrogenation
The invention relates to a method for removing RCS from off-spec white mineral oil prepared by catalytic hydrogenation by filtering the off-spec white mineral oil through a bleaching clay, such as...
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5035794 |
Isoprene recovery in the butyl rubber process
A method for removing a tertiary halide from an olefin hydrocarbon stream which comprises contacting the hydrocarbon stream with activated alumina at a temperature of about -40° to about 120° C.
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5026482 |
Separation of liquid mixtures by concentration swing adsorption
The present invention is a concentration swing adsorption process for separating a liquid phase feedstock comprising a more adsorbable component (A) and a less adsorbable component (B) with respect...
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5021164 |
Oxidized activated carbon and its use in removal of aromatic compounds from aqueous solutions
Aromatic hydrocarbons are readily recovered from aqueous solutions by contacting the aqueous solution with an oxidized activated carbon having a low concentration of acidic oxides. The novel...
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5012037 |
Integrated thermal swing-pressure swing adsorption process for hydrogen and hydrocarbon recovery
Processes are disclosed for the separation of light hydrocarbons from a feedstream containing hydrogen, light hydrocarbons and heavy hydrocarbons. The processes employ thermal swing adsorption zone...
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4996388 |
Separation of ethyltoluene isomers
A process of separating the ortho, meta and para isomers of ethyltoluene. One aspect employs a ferrierite absorbent which separates the para isomer from a mixture of the same and at least one of...
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4992601 |
Process for the selective separation of alkenes and alkynes
A process for the selective separation of alkenes and/or alkynes from gases obtained by cracking of petroleum products comprising: (a) treating said gases containing at least one alkene and/or at...
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4986899 |
Method of adsorption
The invention relates to a method of operating an adsorption system using only two adsorption beds, for control of output quality of a gas containing a hydrocarbon. In the method before complete...
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4961838 |
Two step process for the obtainment of white oils
A two step process for the obtainment of white oils, using hydrocarbons which are heavy alkylates obtained as a by product in the manufacture of detergent range linear alkylbenzene (9-15 carbon...
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4912873 |
Removal of polar impurities from diesel and jet fuel
Treatment of diesel or jet fuel with a non-ionic, macroreticular, cross-linked, acrylic aliphatic ester resin reduces polar impurities and (diesel) color.
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4877515 |
Use of polysulfide treated molecular sieves to remove mercury from liquefied hydrocarbons
Disclosed herein is a process for removing contaminating mercury from hydrocarbon streams, gas or liquid, wherein the stream is contacted with a molecular sieve pretreated with an alkali...
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4864071 |
Process for separation of unsaturated hydrocarbon from gas mixture
A solid adsorbent for an unsaturated hydrocarbon comprising (a) (i) a silver or copper(I) halide or (ii) a silver or copper(I) halide and the halide of a bivalent metal, or (iii) a silver or...
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4861939 |
Process for removing arsine from light olefin containing hydrocarbon feedstocks
The present invention relates to a process for removing arsine from a light olefin to containing hydrocarbon feedstock, said process comprising the steps of (a) passing said feedstock over an...
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4755294 |
Stationary phase, preparation thereof and chromatographic column containing same
The invention relates to a method of preparing a stationary silica phase for the purpose of packing a chromatographic column intended for the liquid-phase separation of components. There are thus...
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4748289 |
Method and apparatus for catalytic processing of light hydrocarbons and catalysts for use therein
A process and apparatus for converting light hydrocarbons, such as waste organic solvents, to a useful fuel having a high flash point. A mixture of light hydrocarbon and heavy oil, wherein the...
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4732665 |
High severity catalytic reforming process
An improved catalytic reforming process. The process is operated at high severity in order to obtain a reformate product having an enhanced octane rating. Higher octane reformate is required to...
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4719007 |
Process for hydrotreating a hydrocarbonaceous charge stock
A process for hydrotreating a hydrocarbonaceous charge stock having hydrogenatable hydrocarbonaceous compounds which process comprises the steps of: (a) contacting said hydrocarbonaceous charge...
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4717778 |
Process for separating the minor isomers of dinitrotoluene
This invention comprises a process for separating the minor dinitrotoluene isomers, 2,3-dinitrotoluene and 3,4-dinitrotoluene from a feed mixture comprising 2,4- and 2,6-dinitrotoluene, and the...
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4701254 |
Static bed wax decolorization process
A process is disclosed for removing color or color inducing impurities to petroleum derived wax by means of an adsorbent comprising a refined inorganic oxide having a pore distribution such that at...
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4668839 |
Process for the separation of sulphur compounds in bitumen, heavy oil and synthetic fuel distillates
A process is described for separating and identifying organic sulphur compounds in petroleum distillates which comprises subjecting an aromatic-containing fraction to chromatography in a dual...
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4650779 |
Regeneration of pillared clays with gas containing a small amount of ammonia
The useful life of a deactivated inorganic pillared clay catalyst or an inorganic pillared clay sorbent saturated with a steam-distillable organic sorbate is extended by adding a small amount of...
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