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| Number | Title | Issue Date |
| 5185081 | Method and apparatus for mixing and separating two liquid phases while preventing aeration and emulsions using a mixer-settler A method and apparatus for mixing two different phases in a liquid-liquid extraction process and for separating the phases employs a spiral stirrer having two tubular coils for creating homogeneous circulation throughout a mixer. The stirrer rotates at a ... | 02/09/1993 |
| 5183578 | Process for the extraction or flushing out of a substance from a heterogenous system, and installation for carrying out the process The process and the continuously working installation are intended for the extraction or flushing out of a substance from a heterogenous system with a solid phase of fibrous or granular material by means of a liquid, which, in the course of the process, f... | 02/02/1993 |
| 5174966 | Laboratory device and method for treating rock samples A laboratory device and method are adapted to subject a same rock sample to successive liquid treatments without any intermediary handling of the sample. The device combines a chamber comprising a first part fitted with an inlet for introducing a rock sam... | 12/29/1992 |
| 5160623 | Apparatus and process for fluid-fluid contact A process and apparatus for effecting liquid-liquid contact in a plurality of stages between heavy and light liquid streams is provided wherein said streams are capable of undergoing mass transfer with one another or constituents in either stream are capa... | 11/03/1992 |
| 5132016 | Solvent prestripping in a Zr/Hf separation liquid-liquid extraction (LLX) circuit A process for producing nuclear grade zirconium and a liquid-liquid separation circuit for separating zirconium from hafnium are provided. The process employs an aqueous feed of ZrOCl2 in the presence of thiocyanate, an organic solvent and acid... | 07/21/1992 |
| 5126048 | Ground water filter for obtaining drinking water The water filtration system according to the present invention includes a containment vessel(s) in which a filtration matrix is contained. The filtration matrix comprises a plurality of particles on which a regenerative membrane is formed directly on the ... | 06/30/1992 |
| 5107874 | Apparatus for cleaning particulate solids A system for cleaning solids contaminated with solvent-soluble contaminants. The system comprises the use of at least two successive cleaning zones, each of which includes a slurry stage and a centrifuge separation stage, wherein the solids to be cleaned ... | 04/28/1992 |
| 5104524 | Apparatus for washing a solvent in the reprocessing of irradiated nuclear fuels The invention is directed to an apparatus for washing a solvent in the recessing of irradiated nuclear fuel. The solvent is washed with an aqueous solution in a mixer-settler having at least one stage which includes a mixing chamber and a settling chambe... | 04/14/1992 |
| 5093254 | Aqueous two-phase protein extraction An aqueous two-phase protein partitioning system is disclosed which employs polyvinylpyrrolidone as the upper phase and maltodextrin as the lower phase and provides a low-cost system for protein partitioning. The system can also be employed with the amion... | 03/03/1992 |
| 5076930 | Apparatus and process for liquid-liquid contact A process and apparatus for effecting liquid-liquid contact in a plurality of stages between heavy and light liquid streams is provided wherein said streams are capable of undergoing mass transfer with one another or constituents in either stream are capa... | 12/31/1991 |
| 5076943 | Fluid particle separator with pressure drop resistance matching A fluid particle separator comprises a tube having an output end open to atmospheric pressure for transporting axially migrated particles suspended in a carrier fluid. A physical barrier, such as a smaller diameter tube axially inserted near the output en... | 12/31/1991 |
| 5049279 | Selective extraction of amino acids Desired amino acids, e.g., phenylalanine, arginine, leucine, isoleucine, valine and/or histidine, are selectively countercurrently extracted from more complex, essentially cystine-free solutions of a plurality of amino acids, utilizing an organic phosphor... | 09/17/1991 |
| 5043070 | Magnetic solvent extraction Particles of a magnetic material coated with a hydrophobic surfactant are dispersed in an organic solvent extractant to produce a magnetic solvent extractant which can be used in solvent extraction processes. Phase separation of an organic phase, carrying... | 08/27/1991 |
| 5028326 | Apparatus for separating organic material from sludge Apparatus and process useful in the separation of undesirable organics from various types of compositions including sludge. The apparatus comprises a contactor vessel, a sludge conduit for conveying sludge to the contactor vessel, and a sludge cutter for ... | 07/02/1991 |
| 5013443 | Extraction and separation method and apparatus using supercritical fluid Extraction and separation method and apparatus using a supercritical fluid for extracting a specified component from a sample by a supercritical fluid and introducing the supercritical fluid containing the extracted component into a silica gel column coat... | 05/07/1991 |
| 5009796 | Methods and apparatus for treating a mixture of particles and fluids A method and apparatus for exposing particles to a fluid including the steps of adding fluid and particles to a container having impeller means therein, generating a current with the impeller so as to subject the particles to centrifugal and convective fo... | 04/23/1991 |
| 4996317 | Caffeine recovery from supercritical carbon dioxide A process and apparatus for caffeine recovery from supercritical carbon dioxide is disclosed. The process involves countercurrent extraction of caffeine from supercritical carbon dioxide with water at pressures in excess of 1,000 p.s.i. in an unpacked ext... | 02/26/1991 |
| 4985141 | Liquid-liquid contactor columns A liquid-liquid contactor column 10 has a solvent input 16 and an aqueous phase input 22. Lighter phase liquid is discharged at 31 and heavier phase is moved by an air lift 26 to a receiver. The air supply line 28 to the air lift 26 includes valve 32 and ... | 01/15/1991 |
| 4954260 | Countercurrent separation process and apparatus A multistage countercurrent separation apparatus and method is described. Each stage includes a mixer zone and a settler zone, both of which have temperature control means to achieve a first temperature and a second temperature, respectively, in the mixer... | 09/04/1990 |
| 4929348 | Apparatus for carrying out extractions in subterranean well The present invention relates generally to improvements in processes and apparatus for effecting solvent extractions using liquefied gas or gases in the supercritical state as the solvents and specifically to continuous processes for carrying out such ext... | 05/29/1990 |
| 4909939 | Process for solvent extraction using phosphine oxide mixtures A process for the removal of difficult-to-remove acidic organic compounds from aqueous solutions using novel phosphine oxide mixtures in which mixtures (1) at least two phosphine oxides are present, the total number of carbon atoms in a first oxide being ... | 03/20/1990 |
| 4883595 | Method for the extraction of a substance from an aqueous solution The invention relates to a method for separating a substance from an aqueous solution and/or for concentrating it by using an organic extractant. In the method the substance to be separated is caused to pass from the aqueous solution to the extractant, wh... | 11/28/1989 |
| 4879037 | Method and apparatus for counter current liquid-liquid extraction A liquid-liquid extraction device and method for operating the same is disclosed. The device includes first and second conduits in flow communication with each other via a common wall having a large number of perforations. The second conduit includes an o... | 11/07/1989 |
| 4877530 | Liquid CO2 /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 a gas in its near-critical or supercritical state and a c... | 10/31/1989 |
| 4859326 | Electrolytic tubular mixer-settler The invention is directed to a multi-stage mixer-settler for use in the lid-liquid countercurrent extraction process with tubular stages disposed at a distance from and parallel with one another in a horizontal plane with each stage including a settling ... | 08/22/1989 |
| 4844801 | Mixer-settler apparatus having a submerged chute Mixer-settler apparatus of the reverse liquid flow type having at least one assembly which includes one or more mixers in series, each being fitted with stirrers and pumps, at least one settling tank in which liquids separate, and at least one submerged c... | 07/04/1989 |
| 4830751 | Process of replacing a liquid component of a slurry by a second liquid and apparatus therefor The solid component of a slurry comprising a first liquid is driven into a second liquid by an enhanced gravitational field by rotating the slurry in contact with a zone comprising the second liquid. The liquids may be miscible. The product is a slurry of... | 05/16/1989 |
| 4830835 | Tubular mixer-settler for liquid-liquid countercurrent extraction A multi-stage tubular mixer-settler for use in liquid-liquid countercurrent extraction includes lengths of tubing disposed in a horizontal plane parallel with and spaced alongside and apart from one another. The lengths of tube each include a settling cha... | 05/16/1989 |
| 4824570 | Apparatus for the extraction of constituents by a supercritical fluid or pressurized liquid An apparatus for the extraction of constituents present in a substance by means of an extraction fluid constituted by a supercritical fluid or a pressurized liquid. According to this apparatus, in an exterior (3) contacting takes place between the substan... | 04/25/1989 |
| 4812233 | Apparatus for separating a solid substance from a liquid mixture of substances Apparatus for separating solid substances from liquid mixtures of substances, wherein the liquid substances contained in the mixture are separated from the solid substances by countercurrent extraction with a solvent which, during the extraction process, ... | 03/14/1989 |
| 4786414 | Gas dispersed packed extraction column A liquid extraction process involving countercurrent flow of aqueous and organic liquid phases with gas dispersion in the organic phase is carried out in a pulsed column with for example a knitted bed, and the organic phase is discharged into the bed via ... | 11/22/1988 |
| 4755178 | Sorbent sheet material Sorbent sheet products are prepared comprising a coherent fibrous web that includes entangled blown fibers and liquid transport fibers intermingled with the blown fibers and an array of solid high sorbency liquid-sorbent polymeric particles uniformly disp... | 07/05/1988 |
| 4747948 | Parallel plate extractor system and method for using same An improved extraction apparatus comprises (a) an elongated trough-like vessel; (b) first and second inlets for introducing relatively heavy and light materials, respectively, into the vessel; (c) first and second outlets for removing relatively light and... | 05/31/1988 |
| 4715965 | Method for separating and recovering volatilizable contaminants from soil A method for separating volatilizable contaminants from soil by introducing the soil into a rotary aggregate dryer through which a working gas indirectly heated to between 750° F. and 1800° F. is drawn to vaporize the contaminants, and for recovering th... | 12/29/1987 |
| 4707264 | Water extraction from hydrocarbons in the presence of asphaltic precipitates A process for solubilizing asphaltic precipitates when extracting water from a hydrocarbon stream with a glycol-water stream by adding a solvent comprised of a bulk aromatic hydrocarbon and an oil-soluble alcohol dispersant to the hydrocarbon stream.... | 11/17/1987 |
| 4707276 | Fluid collection device with phase partitioning means A blood collection device is provided with a phase partitioning device which includes a standpipe connected to a reservoir filled with a sealant material having a specific gravity intermediate the specific gravities of separated light and heavy phases of ... | 11/17/1987 |
| 4668398 | Continuous extraction apparatus and process A continuous extraction apparatus and a continuous extraction process for extracting an extractable component of a liquid or particulate feed material with an immiscible liquid solvent for the extractable component thereof, which apparatus and process are... | 05/26/1987 |
| 4657676 | Sedimentation field flow fractionation Sedimentation field flow fractionation apparatus having a rotor-mounted fractionation column, has detectors positioned to observe the fluids from the column while still in the rotor. Designs include parallel reference and fractionation columns having thei... | 04/14/1987 |
| 4619770 | Method and apparatus for recovering a fluid from a filter A method and apparatus for recovering a product fluid from a filter, wherein a wash fluid is passed through the filter so as to yield a mixture of product fluid and wash fluid. The mixture is then phase separated in a phase separator into a first phase su... | 10/28/1986 |
| 4595571 | Liquid-liquid extractor and method for using same An apparatus is provided that is useful for effecting liquid-liquid extraction by contacting a first liquid medium with a substantially immiscible heavier second liquid medium. Each mixer-settler unit includes a vertically extending settling tank having a... | 06/17/1986 |
