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WO/1991/003515A1 |
A method for separating polymers from a physically commingled solid mixture containing a plurality of polymers comprises dissolving a first one of the polymers in a solvent at a first lower temperature to form a first preferably single p...
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WO/1991/003296A1 |
Exhaustive extraction of constituents of a layer of fine-particle solids is carried out by forcing the extraction medium through the layer by the application of force. This extraction process is rapid and can be used to extract extremely...
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WO/1991/001741A1 |
The invention relates to an aqueous extract of the Acanthospermum hispidum plant and its use as a medicament. The extract is effective as an immunomodulator, in the remedy of radiation sickness, in the prophylaxis and therapy of virus di...
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WO/1991/001170A1 |
The apparatus has a column (1) of closed interior. A pipe (7b) leads into its upper part to admit liquid of higher density, and a pipe (7a) leads into the lower part to admit liquid of lower density. Pipes (8, 10) emerge from the lower p...
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WO/1991/000997A1 |
A system and method for monitoring conditions in a fluid medium. A stream of the fluid medium is flowed through a fluid container which is electrically configured as a transmission line segment and which is electrically connected to load...
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WO/1990/013677A1 |
A germanium bearing sulphate solution containing indium and/or gallium is brought at pH 1-2.5 into contact with an organic phase, containing a substituted 8-hydroxyquinoline and an acid organophosphorus compound. So, in addition to germa...
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WO/1990/010484A1 |
The invention concerns a process and continuously operating installation for the extraction or flushing out of a substance from a heterogenous system including a solid phase consisting of fibrous or granular material by means of a liquid...
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WO/1990/009233A1 |
A method and apparatus for delivering supercritical fluids uses one or two high pressure vessels. Each vessel is cooled below the critical temperature of the fluid while the vessel is being filled. The inlet is then closed and the vessel...
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WO/1990/006795A1 |
This invention relates to a process where contaminants such as inorganic contaminants such as metal or metal salts or organic contaminants such as PCBs are removed from water-wet soil and sludge. In particular, this invention relates to ...
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WO/1990/006189A1 |
A process for removing two or more contaminants from a substrate in a single process. The substrate to be cleaned is contacted with a dense phase gas at or above the critical pressure thereof. The phase of the dense phase gas is then shi...
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WO/1990/003209A1 |
In a method for extraction of a solid or semi-solid sample, an amount of a solvent (14) is caused to flow through an extraction sleeve (24) which is provided within an extraction unit (10) and contains the sample, said amount of solvent ...
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WO/1990/001979A1 |
An improved chemical feeder (10) employing periodic partial immersion in a forced circulation system (12, 16) is provided having a soluble chemical chamber (20), a dissolving chamber (21) into which the soluble chemical chamber (20) exte...
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WO/1989/009639A1 |
In the method disclosed, supercritical CO2 gas is percolated through the starting material and becomes laden with extractible compounds. When the percolation pressure reaches a predetermined value, the pressure in the percolation medium ...
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WO/1989/007481A1 |
Material mixtures are separated in a liquid system on the basis of their physical and/or chemical properties. Separation is carried out by dispersion in a system consisting of three liquid phases, at least one of which is mobile and anot...
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WO/1989/007480A1 |
A process is disclosed for separating low molecular weight components from complex aqueous organic mixtures. The process includes preparing a separation solution of supercritical carbon dioxide with an effective amount of an entrainer to...
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WO/1989/005684A1 |
A mixing-settling apparatus for liquid-liquid extraction comprises a casing (2). A first partition (8) is mounted along its longitudinal axis and above an overflow device. The mixing device is connected to a means of feeding at least one...
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WO/1989/005336A1 |
This invention is directed to conducting chemical reactions in reverse micelle or microemulsion systems comprising a substantially discontinuous phase including a polar fluid, typically an aqueous fluid, and a microemulsion promoter, typ...
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WO/1989/005423A1 |
System for thermally decomposing wastes laden with organic materials, by extracting such wastes in a pressure vessel (50) using a fluid extractant in which the organics are soluble, thereby producing a fluid extract of the organics in th...
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WO/1989/004844A1 |
This invention is directed to a microemulsion system comprising a first phase including a low-polarity fluid material which is a gas at standard temperature and pressure, and which has a cloud-point density. It also includes a second pha...
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WO/1989/004712A1 |
A process and a device are useful for removing hazardous substances, in particular from water or air. The fluid loaded with the hazardous substances flows past a polymer of particularly high solubility in which it dissolves, and the haza...
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WO/1989/004858A1 |
A mixture of a surfactant such as sodium bis(2-ethylhexyl) sulfonsuccinate (AOT), a polar fluid such as an aqueous solution, and a nonpolar or low-polarity fluid forms reverse micelles and microemulsions under near critical and supercrit...
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WO/1989/002774A1 |
Method and apparatus for removing oil-based drilling mud from drill cuttings in order to prepare the drill cuttings for an environmentally safe disposal in the sea. A solvent in the range of solvents which may be condensed by ambient sea...
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WO/1989/003009A1 |
A continuous process is disclosed for separating components of a hydrocarbon gas stream (151) which are selected from the group consisting of hydrogen, nitrogen, methane, ethylene, ethane, higher saturated and unsaturated hydrocarbons, a...
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WO/1989/002874A1 |
The present invention relates to a novel aqueous-phase oxidizer and solids separator reactor (4). More particularly, the invention relates to a two zone pressure vessel (4) in which precipitates and other solids fall or are sprayed from ...
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WO/1989/001042A1 |
A process for preparing highly pure alcohol by concentrating and purifying synthetic alcohol, an aqueous solution of alcohol used in food industry or, particularly, fermentation alcohol with less energy, and an apparatus adapted for the ...
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WO/1989/000444A1 |
A process for separating metallic ions, in particular nickel ions, from aqueous solutions comprises a first stage in which the solutions undergo liquid membrane permeation and a second stage in which the enriched solutions undergo ordina...
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WO/1988/009199A1 |
A process for the decontamination of materials (1) such as soil, sediments, and sludges contaminated with organic contaminants such as PCB's. The process comprises the steps of separating the material (1) into a solid fraction (3) and a ...
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WO/1988/006055A1 |
A settler where all the walls (6, 7, 8, 9) of each tray-like device (5) are inclined outwards. The tray-like devices (5) are so spaced from each other that the distance (h) between the bottoms (10) of the neighbouring tray-like devices (...
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WO/1988/003044A1 |
A method and apparatus for the quantitative recovery of actinide values from biological and environmental samples by passing appropriately prepared samples in a mineral acid solution through a separation column (16) of a dialkyl (phenyl)...
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WO/1988/002650A1 |
A novel leaching process for separating extractable material from a particulate solid material that comprises extractable and non-extractable portions includes the steps of introducing the particulate solid material and a liquid solvent ...
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WO/1988/002274A1 |
A fluid solution maintained under near critical conditions of temperature and pressure is subjected to a non-uniform field which deflects one of the components of the solution to a greater extent than other components of the solution. Th...
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WO/1988/001307A1 |
The method comprises the exchange of chemical species between an alkyl-7-hydroxy-8-quinolein-laden stationary phase and the aqueous sodium aluminate phase and is characterized in that the alkyl-7-hydroxy-8-quinolein content is higher tha...
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WO/1988/000081A1 |
Process for separating volatile substances from solid or liquid materials, in which the material which has to release the volatile substances is placed in contact, at operating pressures of >1 to 30 bars, with a dry or humid gas stream w...
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WO/1987/007536A1 |
Process as described in which the extraneous matter is in particular pollutants such as PCB, oil and similar, as well as useful materials such as coal and the like. The bulk material concerned is mixed with washing compounds such as wate...
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WO/1987/006488A1 |
A dispenser dispenses concentrated cleaning solution from a solid block (80) of a cleaning composition. The dispenser is configured to provide the concentrated cleaning solution at a substantially constant concentration during the entire...
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WO/1987/006431A1 |
A vegetable oil process and assembly for extracting oil from an oil bearing material such as soybean, corn and the like. The process comprises adding at least one reagent and an oil of preferably the same type as will be extracted from t...
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WO/1987/006491A1 |
Process for dephenolating waste water from coking plants including the following steps: introducing the waste water in a reverse osmosis installation, mixing the concentrate coming out of the reverse osmosis installation with the tar pro...
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WO/1987/005822A2 |
Oil emerging from a storage tank and containing all forms of pollution is placed in extensive surface contact with an underlying washing liquid having a greater specific gravity, on to which it diffuses, gives up to it material soluble t...
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WO/1987/003951A1 |
Animal or plant derived materials are prepared for extraction of desired substances therefrom by grinding said materials at or below their brittleness temperature. This treatment allows fracture of the materials into small particles with...
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WO/1987/002697A1 |
Supercritical fluids (SCF) are found to be useful in extracting desired materials from animal tissues, cells, and organs. By varying the choice of SCF, experimental conditions, and animal source material, one may obtain lipids, proteins,...
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WO/1987/002380A1 |
Low-ethanol wines and other alcoholic beverages are produced by treating ordinary alcoholic beverages with novel membrane extraction methods. Semipermeable membranes and extraction fluids comprised either of a non-toxic, water-immiscible...
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WO/1987/001381A1 |
An extraction process comprises contacting a material to be extracted with an extracting fluid at an elevated pressure within a defined space, and separating the extracting fluid and extract, as a mass, from the extracted material while ...
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WO/1987/001299A1 |
Method for extracting constituents present in a substance by means of an extraction fluid consisting of a supercritical fluid or a pressure liquid. According to said method, the substance is compacted in an extractor (3) with the extract...
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WO/1986/005477A1 |
Quaternary ammonium salts which are highly effective as complexing agents for the extraction of hydrogen ion and anions such as nitrate from an aqueous feed solution via a coupled ion transport mechanism employing supported liquid membra...
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WO/1986/005115A1 |
A method for effecting enhanced contact between two immiscible liquids of different electrical conductivities comprises applying both intense mechanical agitation (1) and, in an immediately adjacent zone, a varying electrostatic field (2...
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WO/1986/004917A1 |
A process for treating carbon to reduce the ash content therein. The process involves treating the carbon with a fluorine acid solution which consists of an aqueous solution of hydrofluorosilicic acid and hydrogen fluoride, such that the...
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WO/1986/003134A1 |
A process for extracting soluble ingredients from insoluble bulk materials, especially for separating bitumen and mineral matter from bituminous broken road surface materials and an installation for performing the process. A known such p...
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WO/1986/001424A1 |
An apparatus that is useful for effecting liquid-liquid extraction by contacting a first liquid medium with a substantially immiscible heavier second liquid medium. The apparatus includes either a single mixer-settler unit (10) or two or...
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WO/1985/004819A1 |
Free excess charge which is net unipolar is introduced, preferably by charge injection, into the continuous phase. The charge transfers, through the continuous phase, to the dispersed phase and an induced electric field is thereby set up...
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WO/1985/004816A1 |
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 a gas in its near-critical or supercritical state and...
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