Matches 1 - 50 out of 147 1 2 3 >
Match Document Document Title
7402720 Distillation process for removal of methyl acetylene and/or propadiene from an olefin stream  
The present invention provides a process for removing methyl acetylene and/or propadiene from a propylene stream and/or a butylene stream by two step fractionation. Methyl acetylene and/or...
7241365 Material for a facility for the production of anhydrous formic acid  
The invention relates to an apparatus and a process for the preparation of anhydrous or substantially anhydrous formic acid. This apparatus is constructed partly or entirely of substantially...
H002194 Purification of phenols  
This invention relates to a process for the purification of phenols in a feedstock containing phenols and neutral oils and/or tar bases. The process includes liquid-liquid extraction of feedstock...
7226527 Method for recovering crude 1,3-butadiene by extractive distillation from a C4 cut  
A process for recovering crude 1,3-butadiene from a C 4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the...
7074434 Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions  
Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least...
7041199 Process and device for hydrolytically obtaining a carboxylic acid alcohol from the corresponding carboxylate  
A process and a device for the catalytic hydrolysis of a carboxylate, e.g., methyl acetate, ethyl acetate, i- or n-propyl acetate, i- or n-butyl acetate, allyl acetate and methyl formate, into the...
6986833 Process for fractionating water-containing crude amine mixtures from amine synthesis  
An amine-containing mixture containing one or more amines, water, low-boilers and optionally high-boilers is fractionated by a process having the steps (iii) and (iv) and optionally the steps (i),...
6838104 Process for the production of tocotrienols  
This invention relates to processes for the production of tocotrienol compounds from biological sources such as palm oil, cereals, grains, and grain oils. The tocotrienol products are recovered in...
6821396 Process for fractionating water-containing crude amine mixtures from amine synthesis  
A mixture containing mixture one or more amines, water, low-boilers and high-boilers, is fractioned in a process wherein (i) low-boilers are separated from the mixture by distillation, (ii)...
6706898 Methods for separating a tocopherol from a tocopherol-containing mixture  
The invention relates to method for separating tocopherol from a first tocopherol admixture by heating the first tocopherol admixture composed of at least one tocopherol, a fatty acid, and an...
6679975 Process for recovering the methanol contained in a liquid hydrocarbon feed  
The present invention aims to isolate the azeotropes formed in a distillation column (B 1 ) by methanol, propane and butane. The azeotropes are then liquefied in heat exchanger (E 2 ) and mixed in...
6494996 Process for removing water from aqueous methanol  
A process for separating water from methanol in an aqueous methanol initial mixture, including subjecting said mixture to azeotropic distillation in the presence of sufficient added methyl acrylate...
6488818 Removal of impurities from 3-(2′-acetoxyethyl)-dihydro-2(3H)furanone  
A process for removing impurities from 3-(2′-acetoxyethyl)dihydro-2(3H)furanone (I), where the 3-(2′-acetoxyethyl)dihydro-2(3H)furanone containing the undesirable impurities is initially...
6444096 Process for the recovery and purification of cyclobutanone  
A process for the recovery and purification of cyclobutanone from a crude product mixture obtained from an oxidation product mixture resulting from the oxidation of cyclobutanol to cyclobutanone in...
6417128 Methods and replacing water and cyclohexanone with acetic acid in aqueous solutions of catalyst  
This invention relates to methods of replacing water and cyclohexanone with acetic acid in an aqueous solution of catalyst, preferably a cobalt compound. Such an aqueous solution is produced by...
6398917 Apparatus for the purification of commercially available diphenyl-p-phenylenediamine (DPPD)  
An apparatus for the purification of crude N,N′-diphenyl-p-phenylenediamine (DPPD) in which there is an extraction unit containing a liquid permeable container and an adsorption layer downstream...
6375802 Method of retrofitting existing equipment for an improved aromatics separation process  
An improved process for the recovery of aromatic compounds from a mixture containing aromatic and non-aromatic compounds and method for retrofitting existing equipment for the same is provided. The...
6294055 Process for the separation of hydrogen fluoride from its mixtures with a hydrofluoroalkane containing from 3 to 6 carbon atoms  
Process for the separation of hydrogen fluoride from its mixtures with a hydrofluoroalkane containing from 3 to 6 carbon atoms, by extraction using an organic solvent.
6224717 Methods for separating a tocotrienol from a tocol-containing mixture and compositions thereof  
The invention relates to method for separating tocotrienol from a first tocol admixture by heating the first tocol admixture composed of a tocotrienol, at least one tocopherol, a fatty acid, and an...
6159347 Methods for separating a tocol from a tocol-containing mixture  
The invention relates to method for separating tocol from a tocol-containing admixture by heating the tocol-containing admixture composed a tocol, a fatty acid, and an esterifying compound to...
6113790 Process for removing water-soluble organics from waste streams  
The invention relates to a 3-step process for removing water-soluble organics from waste streams. The first step involves contacting a waste stream with base, the second step involves contacting...
6066238 Hydrocarbon separation  
5961787 Solvent extraction apparatus  
A solvent extraction apparatus which includes a heating plate, a vessel for containing a solvent, an extraction thimble to obtain a sample to be extracted from said vessel and a cooler for...
5858169 Process for the simplified separation of multicomponent mixtures of at least partly organic origin  
A process for separating a multi-component mixture containing solid or liquid organic components by treating the mixture with a gaseous entraining agent comprising a superheated carrier fluid...
5830325 Separating and removing 1, 1, 1-trifluoroethane by using azeotropic distillation  
The disclosure relates to separating 1,1,1-trifluoroethane (HFC-143a from fluorocarbon impurities by using extractive distillation with an extractive agent comprising an alcohol. Examples of...
5776319 Continuous linear-torroidal extraction method  
A method for continuously extracting a solute from a carrier medium. A volatile solvent is placed in a lower distillation chamber of a vessel, the vessel including a convergent baffle disposed to...
5750008 Method and device for the extraction treatment of a sample  
In a method for the extraction treatment of a sample (19) with a solvent which is liquid at normal ambient temperature and normal pressure, in which the solvent is introduced into a preferably...
5744010 Process for the preparation of the non-toxic salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and arrangement for carrying out this process  
The invention relates to a process for the preparation of acesulfam salts by reaction of salts of amidosulfonic acid with diketene to give a salt of acetoacetamidosulfonic acid (I), ring closure by...
5677193 Method and apparatus for processing a test sample to concentrate an analyte in the sample from a solvent in the sample  
A method of processing a test sample to concentrate an analyte in the sample from a solvent in the sample includes: a) boiling the test sample containing the analyte and solvent in a boiling...
5624566 Method and apparatus for recovering carboxylic acids from dilute solutions  
A method for recovering carboxylic acids from a dilute aqueous solution thereof having a concentration below about ten percent (10%) by weight, which includes passing the dilute acid solution...
5549794 Continuous linear-toroidal extraction-distillation apparatus  
An apparatus (10) for continuously extracting a solute from a carrier medium (102) is provided. The apparatus is formed from a vessel (12) including a convergent baffle (22) separating the vessel...
5507953 Extraction method and apparatus for cleaning contaminated soil  
The method of cleaning soil contaminated with contaminants includes comminuting contaminated soil to form a comminuted contaminated soil; filling the comminuted contaminated soil into a...
5492625 Method of recovering carboxylic acids from dilute solutions  
A method for recovering carboxylic acids from a dilute aqueous solution thereof having a concentration below about ten percent (10%) by weight, which includes passing the dilute acid solution...
RE35107 Recovery of isopropyl acetate and ethanol from an isopropyl acetate ethanol and water-containing stream  
High purity isopropyl acetate and ethanol are recovered from a process stream containing isopropyl acetate, ethanol and water by a multiple step process including extracting substantially all of...
5264085 Method of separating components of phenols mixture by distillation  
A method of continuously distilling off the components of a mixture containing phenols, water and methanol using a single distillation column, wherein methanol is recovered from the top of the...
5217582 Process for the isolation of alkyl glyoxylate  
A process is provided for separating high purity alkyl glycolate from a gaseous reaction mixture resulting from the catalyzed gas phase oxidation of alkyl glycolate. A hot solvent which is...
5188709 Crude oil processing apparatus for heavy oil extraction  
The present invention provides an apparatus for preparing and treating a heavy oil extraction solvent. A solvent fraction is separated from a crude oil and combined with a slip stream of rerun...
5183538 Extraction plus ion exchange processing of a brine stream  
A method for recovering a liquid diluent having a low salt content from an organic/aqueous mixture which contains significant quantities of the diluent, an alkali metal salt, and water comprises an...
5154801 Advances in product separation in DIPE process  
In the diisopropyl ether production process, the distallation step for the separation of aqueous IPA recovered from the DIPE extraction operations is modified to avoid carrying out the distillation...
5122236 Method for removal of dimethyl ether and methanol from C.sub.4 hydrocarbon streams  
A process for removing dimethyl ether (DME) and methanol impurities from C 4 hydrocarbon stream without substantial loss of C 4 hydrocarbons by fractionating a C 4 hydrocarbon stream containing...
5104492 Recovery of carboxylic acids from water by precipitation from organic solutions  
Carboxylic acids are recovered from wet organic solutions by reducing the solutions' water content thus causing the acids to precipitate as recoverable crystals.
5078974 Apparatus for making alkali-metal tetraorganylborates  
Apparatus for the manufacture and recovery of alkali-metal tetraorganylborates. A mixed solvent and liquid/liquid contactor configuration is used in the system which aids in the recovery of the...
5047580 Process for the separation of sulfuric acid from aqueous mixtures of paraffin-sulfonic acids  
The purpose of the process of the present invention is to remove excess sulfuric acid from a mixture of paraffin-sulfonic acids free or substantially free, from paraffins. In order to remove said...
5013444 Process for separating off enol ethers from reaction mixtures containing alcohols  
The invention relates to a gentle process for the separation of enol ethers from mixtures containing water-soluble alcohols by extraction, wherein an aqueous solution of a base is used as the...
4997547 Method for the production of an aromate concentrate suitable for use as blending component for fuel  
In the method for the production of an aromate concentrate suitable for use as blending component for gasifier fuel, feed hydrocarbon mixtures having boiling ranges substantially between 40° and...
4891101 Purification of tertiary hydroperoxides containing primary and secondary hydroperoxide contaminants  
Primary and secondary hydroperoxide contaminants in a tertiary hydroperoxide composition obtained by oxidation of a branched hydrocarbon are removed by contacting the tertiary hydroperoxide with a...
4877530 Liquid CO.sub.2 /cosolvent extraction  
Disclosed are a fluid extractant, and a process and apparatus for using the extractant to separate an organic liquid from an aqueous mixture. The extractant comprises a first fluid solvent which is...
4784868 Potable spirit production  
A method of producing a potable spirit comprises removing water from a fermented wash containing ethanol, water and congeners to produce a substantially water-free mixture of ethanol and congeners,...
4715932 Method to separate polar organic compounds, in particular aliphatic alcohols, from fermentation fluids  
This invention relates to a method for separating organic compounds, particularly lower aliphatic alcohols from fermentation fluids. This is accomplished by the use of a two-step extraction process...
4705604 Process for extracting poly-beta-hydroxybutyrates by means of a solvent from an aqueous suspension of microorganisms  
A process for extracting poly-beta-hydroxybutyrates from an aqueous suspension of microorganisms, in which an azeotropic distillation, and an extraction of the polymer by means of the solvent used,...
Matches 1 - 50 out of 147 1 2 3 >