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8785710 Paraffin purification method and apparatus  
A method for purifying a paraffin from a source material containing a paraffin having 2 to 6 carbon atoms and an olefin having 2 to 6 carbon atoms includes a first step of bringing the source...
8143470 Method of purifying olefins using pyrrolidinium-based or piperidinium-based ionic liquids comprising copper (I) halide  
The present invention relates to a method of purifying olefin, the method comprising removing a small amount of acetylenic compounds contained in olefin by using pyrrolidinium-based or...
7973209 Fractionation recovery processing of light olefins free of carbon dioxide  
Processing schemes and arrangements for the catalytic cracking of a heavy hydrocarbon feedstock and obtaining light olefins substantially free of carbon dioxide via amine treatment and employing...
7411107 Alkene separation process  
A process for the oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid which process comprises separation of the alkene from a mixture of the alkene, the alkane...
7361800 Process for the separation of olefins from paraffins using membranes  
Chitosan membranes chelated with silver or cuprous material may be used to separate olefins from a mixture of olefins and paraffins. The feed stream is humidified, demisted, treated to remove...
7019188 Use of ionic liquids to separate olefins, diolefins and aromatics  
The present invention relates to the separation of olefins, diolefins and lower aromatics from mixed streams of hydrocarbons using ionic liquids in the absence of metal compounds. The present...
6849774 Separation of dienes from olefins using ionic liquids  
Methods for separating di-olefins from mono-olefins, and olefins from non-olefins such as paraffins, oxygenates and aromatics; are provided. The methods use metal salts which complex both...
6491888 pH control method of reducing nitrogen oxides emission  
The invention relates to a process for the selective recovery of olefins from a mixture of gases by: a) bringing a gaseous mixture having olefins and hydrogen into contact with silver nitrate...
6414210 Process for the separation of light olefins from paraffins  
Process for the separation of light olefins from paraffins contained in mixtures, optionally also containing hydrogen, comprising bringing said mixtures into contact with an aqueous solution of...
6147273 Method for the separation of compounds having olefinic unsaturation  
Olefins may be separated from paraffins, particularly those having the same number of carbon atoms, more easily than by fractional distillation by contacting a feed containing both materials with...
5728910 Oil-forming method of chlorine-containing plastic refuse  
To present an oil-forming method of chlorine-containing plastic refuse capable of obtaining oily product free from chlorine content, while suppressing apparatus corrosion by efficiently capturing...
5421994 Process for the recovery of mercury and arsenic in a hydrocarbon cut  
A process for the recovery of mercury and arsenic for which elementary mercury and/or mercury mercaptides are recovered prior to the recovery of arsenic and wherein the recovery temperature of the...
5401392 Process for eliminating mercury and possibly arsenic in hydrocarbons  
For removing mercury and any arsenic in hydrocarbon charges containing mercury and sulfur, the charge is contacted with an arsenic collecting material having catalytic properties ("catalyst") in...
5245106 Method of eliminating mercury or arsenic from a fluid in the presence of a mercury and/or arsenic recovery mass  
The invention relates to a method of eliminating mercury or arsenic from a fluid in the presence of a solid mass for the recovery of mercury and/or arsenic. The said mass contains copper and...
5191151 Use of silver-exchanged ionomer membranes for gas separation  
A process for separating C2 -C4 alkenes from C1 -C6 alkanes comprises the presence of water vapor in the alkene/alkane feed and the use of an Ag+ -exchanged sulfonated copolymer of...
4943673 Novel metal-diketone absorbents for olefins  
A process for absorbing olefinically-unsaturated hydrocarbon compounds from feedstreams containing such compounds by contacting said feed streams with metal-diketone absorbents of the formula:...
4911825 Process for elimination of mercury and possibly arsenic in hydrocarbons  
Process for elimination of mercury in hydrocarbon charges wherein said charge is contacted, under hydrogen, with a catalyst containing at least one metal from the group consisting of nickel,...
4430205 Method for the improvement of the oxidation resistance of hydrocarbon oil, especially transformer oils by the selective removal of pro-oxidant nitrogen and sulfur compounds therefrom  
Liquid hydrocarbon streams, preferably petroleum streams, most preferably lube and specialty oil streams and in particular transformer oils are rendered resistant to oxidation by treatment with a...
4409410 Process for selectively hydrogenating a di-olefin in a mixture of hydrocarbons having at least 4 carbon atoms and comprising an α-olefin  
Process for selectively hydrogenating a diolefin present in a mixture of hydrocarbons having at least 4 carbon atoms per molecule: the hydrocarbon mixture is reacted with hydrogen in contact with...
4393249 Process for removing alkynes from C4 hydrocarbon mixtures  
A process for removing alkynes from hydrocarbon mixtures, particularly those containing butadiene by reacting the alkynes with hydroxyl group containing organic compounds in the presence of a...
4385005 Process for separating unsaturated hydrocarbons using copper or silver complexes with fluorinated diketonates  
A process of removing unsaturated hydrocarbons containing at least one non-aromatic unsaturation from feedstreams which comprises contacting the feedstream with at least one of Cu2 O or Ag2 O and...
4328382 Process for separating off olefins from gases containing olefins  
An improved process for the absorption of an olefin in a silver salt solution and the recovery thereof by desorption is disclosed wherein the silver salt of the silver salt solution is silver...
4266086 Process for removing α-acetylenes from diolefins  
Conjugated diolefins contaminated with relatively high levels of acetylenic impurities in a hydrocarbon feedstream are purified by a cyclic, liquid phase, predominantly catalytic cracking process...
4105588 Preparation of copper and silver particles for ethylene purification  
Process for the purification of olefins by removing oxygen and acetylene from them which comprises passing the olefins over a contact material consisting essentially of a metallic element from the...
3979280 Separation of unsaturated compounds from liquid hydrocarbon mixtures containing same  
Unsaturated hydrocarbons are separated from liquid mixtures containing same by adsorbing the unsaturated compound using a metal-loaded macroporous exchange resin and desorbing the unsaturated...
3960976 Method for the separation of hydrocarbons  
Hydrocarbons are reacted with a tri-halogenoacetate of the formula ##EQU1## wherein X, Y and Z each represents a halogen atom and M represents a mono valent metal of group Ib to form the...
3875251 2-(1-PROPENYL-5-NORBORNENE SEPARATION FROM PIPERYLENE DIMERS BY COMPLEXING WITH COPPER, SILVER, GOLD OR MERCURY COMPOUND  
2-(1-PROPENYL)-5-NORBORNENE IS SEPARATED FROM PIPERYLENE DIMERS BY COMPLEX FORMATION WITH A COMPOUND OF COPPER, SILVER, GOLD OR MERCURY.
3864418 Process of separating complexable materials employing semipermeable polymer film  
There is described the preparation of hydrophilic, semi-permeable film membranes having an increase in pores and containing complex-forming metals. The films can be formed from solutions having...
3859376 SEPARATION OF PIPERYLENES  
A method of separating 1,cis-3-piperylene from 1, trans-3-piperylene by contacting said piperylenes with silver nitrate or silver perchlorate, thereby forming the cis isomer and subsequently...
3784624 PROCESS FOR THE SEPARATION OF DIENE FROM ORGANIC MIXTURES  
3763200 COMPLEXES OF MONOVALENT COPPER AND SILVER SALTS DERIVED FROM FLUOROCARBON SUBSTITUTED SULFONIC ACIDS  
3652701 IN SITU PREPARATION OF CLATHRATING SOLIDS  
3513213 HYDROCARBON SEPARATION  
3467725 SEPARATION OF AROMATIC HYDROCARBONS WITH SOLID TERNARY COMPOUNDS  
3440296 PURE BINARY ADDITION COMPOUNDS  
3427362 SEPARATION OF AROMATIC HYDROCARBONS  
3417155 Selective recovery of diolefinic hydrocarbons  
3409692 Process of separating ligands by complexation with solid adsorbents of group i-b metal salts  
3359341 Extraction of hydrocarbons  
3287428 Separation of cyclohexadiene isomers  
3268613 Stabilization of polar silver salt hydrocarbon extracting solutions  
3221073 Purification of olefins  
3219717 Purification of hydrocarbons  
3219721 Processes for the separation of hydrocarbons  
3218366 Process for the separation of hydrocarbons  
3217051 Separation of the para and meta isomers of divinylbenzene  
3217052 Separation of divinylbenzene from a mixture comprising divinylbenzene and ethylvinylbenzene  
3201489 Recovery of aromatic hydrocarbons  
3070642 Separation of butadiene from hydrocarbon mixtures  
2973394 Method of purifying styrene  

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