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| Number | Title | Issue Date |
| 7339088 | Alkylbenzene refining process and apparatus Improved processes and apparatus use a finishing column with a mid-cut that provides alkylbenzene products of high purity containing less than about 1 ppmw benzene and less than about 50 ppmw heavies while accommodating enhancements in the efficiencies and the capac... | 03/04/2008 |
| 7288169 | Distillation apparatus for readily polymerizable compound A distillation apparatus for subjecting a crude readily polymerizable compound to distillation under vacuum conditions to purify the same includes a distillation column and a vacuum generator, an exhaust gas conduit of the vacuum generator being connected to a conne... | 10/30/2007 |
| 7163606 | Process for recovering methylene chloride A system for recovering methylene chloride from an aqueous waste stream is disclosed. The system includes a distillation unit, at least one heat transfer unit, receptacles for methylene chloride and waste product, a temperature probe and a controller configured to s... | 01/16/2007 |
| 6964730 | Purification apparatus and method Disclosed is a purification apparatus and method. The purification apparatus includes: a mobile phase distillation part for distilling a mobile phase; a mobile phase liquefaction part for liquefying the distilled mobile phase; and a purification part disposed betwee... | 11/15/2005 |
| 6911119 | Simple portable mini distillation apparatus for the production of essential oils and hydrosols This invention relates to a simple, convenient, portable mini-distillation apparatus for the production of essential oils and hydrosols, said apparatus is useful to distill essential oils and hydrosols such as rose water, ajowain water from fresh and dried plant mat... | 06/28/2005 |
| 6638397 | Simplified automated distillation system for recovering a solvent from a liquid mixture A system is described for recovering a purified distillable component from a starting mixture utilizing a transition tank to receive a transition mixture distilled from a starting mixture, which is returned to the system for further distillation. The syst... | 10/28/2003 |
| 6551464 | Distillation/reflux equipment A combination reflux/distillation apparatus is provided having interchangeable reflux and distillation columns, a segmented collection trough and an integrated indirect heating provision. The apparatus is uniquely adapted for refluxing and distilling smal... | 04/22/2003 |
| 6419796 | Solvent distillation apparatus The object of the invention is to provide a solvent distillation apparatus capable of preparing a highly pure anoxic, dehydrated solvent. A distilling flask is connected to a vacuum double-barrel fractionating column by a glass flange. The upper end of th... | 07/16/2002 |
| 6214173 | On-site manufacture of ultra-high-purity nitric acid Provided is a novel on-site system and method for providing ultra-high-purity nitric acid to a point of use. The system includes a source of nitric acid at a concentration greater than 68 wt %; a reflux distillation column having an inlet in communication... | 04/10/2001 |
| 6159344 | Reaction and distillation device The invention relates to a distillation and reaction device having a reaction section and a distillation-reaction section. The distillation-reaction section has a distillation zone with at least one device for circulation of the effluent from the reaction... | 12/12/2000 |
| 5846386 | On-site ammonia purification for semiconductor manufacture Highly purified ammonia for use in semiconductor manufacturing is prepared on-site by drawing ammonia vapor from a liquid ammonia reservoir, passing the vapor through a filter capable of filtering out particles of less than 0.005 micron in size, and scrub... | 12/08/1998 |
| 5785820 | On-site manufacture of ultra-high-purity hydrofluoric acid for semiconductor processing A system for purification and generation of hydrofluoric acid on-site at a semiconductor device fabrication facility. An evaporation stage (optionally with arsenic oxidation) is followed by a fractionating column to remove most other impurities, an Ionic ... | 07/28/1998 |
| 5755934 | Point-of-use ammonia purification for electronic component manufacture Highly purified ammonia for use in processes for the production of high-precision electronic components is prepared on-site by drawing ammonia vapor from a liquid ammonia reservoir, passing the vapor through a filter capable of filtering out particles of ... | 05/26/1998 |
| 5709780 | Partitioned distillation column An integrated distillation column having a partitioned stripping or absorption section is presented. The integrated stripping/distillation column comprises a single shell housing a refluxed absorption section and a reboiled stripping section. The strippin... | 01/20/1998 |
| 5500096 | Method of concentrating less volatile liquids The invention relates to an improved method and a novel apparatus for the concentration, separation, and purification of contaminated chemical compounds, wherein the chemical compound is less volatile than the contaminant. The distillation is performed us... | 03/19/1996 |
| 5498317 | Apparatus for treating chemical production plant process condensate An apparatus and method for treating chemical production plant process condensate such that a contaminant-rich stream and a relatively pure aqueous stream is separately recoverable from the condensate, wherein the contaminants are substantially removed fr... | 03/12/1996 |
| 5478443 | Apparatus for separating biochemical compounds from biological substances An apparatus for extracting, concentrating, and separating biochemical compounds from plant or animal biological substances. It has a heating vessel for the substance to be treated, and is connected at its lower part to an evaporation circuit. The evapora... | 12/26/1995 |
| 5443695 | Distillation apparatus for concentrating less volatile liquids The invention relates to an improved method and a novel apparatus for the concentration, separation, and purification of contaminated chemical compounds, wherein the chemical compound is less volatile than the contaminant. The distillation is performed us... | 08/22/1995 |
| 5354428 | Apparatus for the continuous on-site chemical reprocessing of ultrapure liquids Method and apparatus for the distillation of liquids which is particularly suited for the removal of soluble impurities and insoluble and non-volatile particles of 10 microns to 0.2 micron or less in size. A substantially elongated distillation chamber ha... | 10/11/1994 |
| 5252201 | Fractionating process and fractionator An improved fractionating process is provided wherein a liquid stream is withdrawn from the separation zone of the fractionator, is cooled and is recycled to the fractionator at a location below the location of withdrawal of the liquid stream. An improved... | 10/12/1993 |
| 5217904 | Apparatus and method for evaporative concentration of a liquid sample An apparatus for evaporative concentration of a liquid sample comprises a housing including an upper chamber and a lower chamber, a concentrator flask, a reflex tube and a vortex tube. The concentrator flask includes an upper solution vessel section and a... | 06/08/1993 |
| 5164049 | Method for making ultrapure sulfuric acid Method for the production of ultrapure sulfuric acid including distillation of sulfuric acid material for the removal of soluble impurities and insoluble and non-volatile particles of 10 microns to 0.2 micron or less in size. Reprocessing is also provided... | 11/17/1992 |
| 5116485 | Apparatus and method for recovering diesel-quality fuel from produced crude oil An apparatus and process for recovering a diesel-quality fuel from produced crude oil is described. The diesel-quality fuel is produced by flashing the crude feedstock at high temperatures and recovering the diesel quality fuel as a liquid from a refluxin... | 05/26/1992 |
| 5028298 | Waste water concentrator and waste water disposal plant The present invention relates to a technique of concentrating waste water whereby the water content of the waste water is removed with a high decontamination factor, employs a porous membrane having a property allowing gas such as steam to permeate but no... | 07/02/1991 |
| 4770746 | Spinning band fractionating column Spinning band fractionating column apparatus is disclosed having a spinning band formed with a magnet embedded in its bottom end in the manner of a magnetic stirring vane for rotation by a rotating external magnetic field at the bottom of the apparatus. R... | 09/13/1988 |
| 4575403 | Apparatus for distilling phosphorus A continuous process for reducing the arsenic content of phosphorus is described in which the impure phosphorus is continually passed through a heat exchanger and heated to vaporize a portion of the phosphorus at a temperature not above 200° C., separati... | 03/11/1986 |
| 4539076 | Vapor compression distillation system A vapor compression distillation system for distillation of any two-component liquid mixture where separation of the more volatile from the less volatile component is required. This system achieves a very high efficiency through the use of vapor compressi... | 09/03/1985 |
| 4465559 | Atomization/distillation system An atomization/distillation unit for separating a component from a mixture containing that component having a chamber, a container incorporated within the bottom of the chamber for receiving the mixture, a heater for heating the mixture to a temperature s... | 08/14/1984 |
| 4406745 | Device for high speed production of aromatic essential oils from perfume-generating plants or parts thereof This invention relates to a method and a device for high-speed production of aromatic essential oils from perfume-generating plants. The device comprises at least one enclosure 1 provided with means 2 for crushing said plants into a slurry, heating means ... | 09/27/1983 |
| 4406743 | Fractionation column for reclaiming used lubricating oil A novel process for the purification of used oil comprising removing the ash-forming components, then subjecting the oil to vacuum fractionation. A novel vacuum fractionation column is also disclosed.... | 09/27/1983 |
| 4390398 | Modified process for resin manufacturing using a continuous separate distillation column Volatile reactants are heated under reflux in a reactor and form volatile reaction by-products which are continuously removed in a vapor effluent from a reflux column and partial condenser. The effluent, which entrains some of the reactants, is condensed ... | 06/28/1983 |
| 4255386 | Method and apparatus for destroying organic matter to facilitate trace inorganic element analysis The apparatus of the present invention includes a quartz flask for containing 71% nitric acid and the organic matrix to be destroyed, a Soxhlet extractor disposed above the flask, and a Friedrich coldfinger reflux condenser disposed above the extractor. A... | 03/10/1981 |
| 4238451 | Process and device to measure the asphaltene content of petroleum products An apparatus to measure the asphaltene content of petroleum products where a precipitation evaporator for the sample is surmounted by a condensing unit. Immediately below the precipitation evaporator is a filtering unit with a rinsing vapor inlet line for... | 12/09/1980 |
| 4226678 | Method and apparatus for the decontamination of a liquid containing contaminants Decontaminating a liquid--such as a liquid containing radioactive materials--by evaporation, includes the steps of guiding the vapor through plurality of wash liquid baths and guiding the wash liquid through the individual baths substantially in a counter... | 10/07/1980 |
| 4218289 | Distillation apparatus with a grid partial condenser An improved fractional distillation column, especially adapted for use in fractional distillation of heat-sensitive materials under low pressure, is described. The improvement comprises a partial condenser disposed above the packing in the column. The par... | 08/19/1980 |
