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| Number | Title | Issue Date |
| 6969446 | Method for producing concentrated nitric acid and installation for carrying out a method of this type Process for producing a nitric acid of a concentration from 75 to 99.9% from a more diluted nitric acid, wherein a nitric acid of a concentration of about 45 to 70% is rectified in contact with a liquid extraction medium to prevent the formation of a nitric acid-wat... | 11/29/2005 |
| 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 |
| 5858178 | Process and device for preparing and/or extracting samples using a vaporizable agent at high temperature A process for preparing and/or extracting samples by heating them together with a solvent in a container under pressure, using a Soxhlet apparatus. The samples are dried by heating in a container; and the resultant vapors are drawn off to generate a vacuu... | 01/12/1999 |
| 5814192 | Vapor compression distillation apparatus A vapor compression distillation apparatus includes a vessel for containing a liquid to be distilled and a heat exchanger of the shell and tube type immersed in the liquid. The heat exchanger has top and bottom manifolds and vertical tubes surrounded by a... | 09/29/1998 |
| 5783047 | Heat integrated distillation column A monotube or multitube 2 is coupled to a body shell 1 via tube plates 3a and 3b at both ends, so that a tube interior 4 and a tube exterior 5 of the monotube or multitube 2 are isolated from each other. A difference is made in operating pressure between ... | 07/21/1998 |
| 5730836 | Evaporative concentration of clay slurries A method for concentrating a clay slurry by subjecting the slurry to indirect heat exchange within a heat exchanger to elevate the temperature of the slurry while specifically suppressing boiling of the liquid within the heat exchanger. The heated slurry ... | 03/24/1998 |
| 5711857 | Microwave distillation apparatus A microwave distillation apparatus is provided. The apparatus includes a microwave heating chamber having a plurality of walls. A vessel is located within the chamber for containing a liquid to be distilled. The vessel has a mouth for receiving the liquid... | 01/27/1998 |
| 5670027 | Method of drying a gas making use of a distillation of a liquid desiccant agent A method of drying a gas making use of the distillation of a liquid desiccant, the method comprising the introduction of a stream of make-up liquid containing water and of an organic solvent miscible with water, the solvent being a more volatile solvent t... | 09/23/1997 |
| 5624530 | Spray drying system Spray drying system for drying a liquid feed which is made up of a solution or suspension of particles in a fluid medium. The system enables the spray drying of wet material and converting the material into powder by evaporation of a liquid medium at redu... | 04/29/1997 |
| 5597453 | Apparatus and method for vapor compression distillation device A vapor compression distillation/product concentration device includes an evaporator/condenser core, with alternating boiling and condensing chambers with edge manifolds such that substantially the entirety of each plate surface is used as a heat transfer... | 01/28/1997 |
| 5582691 | Ocean thermal energy conversion (OTEC) system An improved ocean thermal energy conversion (OTEC) system which includes a novel combined evaporator/condenser. The combined evaporator/condenser further includes a plurality of evaporator spouts and a mist eliminator, wherein the pressure is maintained a... | 12/10/1996 |
| 5582690 | Method of and means for water desalinization Desalination of sea water is achieved using a solar pond that includes a halocline interposed between a convective upper wind mixed layer exposed to the ambient atmosphere, and a lower heat storage layer of hot, concentrated brine, Hot brine from the heat... | 12/10/1996 |
| 5582680 | Wastewater treating apparatus A compact, transportable and self-contained apparatus for treating wastewater containing as impurities and pollutants various non-volatile (at water boiling points) fluids such as greases, oils and soaps, having a vessel/evaporator for receiving the waste... | 12/10/1996 |
| 5496448 | Evaporation means and method An evaporator, which includes a water chamber for receiving water to be evaporated. A plurality of evaporator tubes which when heated, and when water is on an inner wall of a tube, evaporates at least a portion of that water. A plurality of distributors s... | 03/05/1996 |
| 5472576 | Process for the recovery of industrial solvents and diluents from industrial waste A method for the production of an industrial diluent which includes the steps of heating a liquid waste from a facility that manufactures coatings, inks, lacquers, adhesives, or dyes in a mixer-reactor to generate a vapor, flowing the vapor into a distill... | 12/05/1995 |
| 5457277 | Multiple reboiler system To heat the circulating reboiler streams of multiple distillation columns a fired reboiler is provided for a first column requiring the most heat. A portion of the bottoms from the first column is passed through the tubes of the heater in the fired reboil... | 10/10/1995 |
| 5443040 | Pipestill heater and method for controlling combustion in pipestill heater A pipestill heater capable of increasing heat efficiency without using a large-sized oxidizing agent heating unit. The pipestill heater includes a radiation section and a convection section for preheating process fluid by exhaust gas of an elevated temper... | 08/22/1995 |
| 5382328 | Installation for processing waste oil For the processing of waste oil, i.e. environmentally safe processing, a process and installation are used whereby the waste oil is preheated with the distillation gases and is then distilled itself by burning the distilled waste oil. The liquid and solid... | 01/17/1995 |
| 5346593 | Intermediate reboiler for a methanol plant A methanol refining column and method using an intermediate reboiler. Use of the intermediate reboiler reduces methanol production energy requirements. A side stream at or near a fusel oil takeoff point is heated in an intermediate reboiler by a low tempe... | 09/13/1994 |
| 5312524 | Distillation system for recovery of industrial process liquids A distillation system for recovery of volatile components of contaminated liquids used in an industrial process includes a tube assembly including outer tubes to which hot bottoms liquids are supplied and inner tubes to which process liquids are supplied ... | 05/17/1994 |
| 5306397 | Process and apparatus for the extraction of fresh water from warm seawater The apparatus is located almost completely under the surface of the sea. The vacua in the de-aeration and the evaporation chambers are generated by a vacuum pump and are maintained by the effects of a pressure reduction device at the inlet for warm seawat... | 04/26/1994 |
| 5158649 | Apparatus for reclaiming waste gas treating chemical When regenerating gas treating chemicals such as diethanolamine solution, the usual practice is to subject the chemicals to steam stripping. Ultimately such action is ineffective, and it is necessary to discard the chemicals. The waste chemical can be rec... | 10/27/1992 |
| 5102503 | Mobile self-contained system for on-site recovery of solvents A system for on-site recovery of reusable industrial waste components, such as solvents, from a liquid waste stream includes a trailer that is internally partitioned to separate system components through which the waste stream passes in a first partitione... | 04/07/1992 |
| 5082525 | Method and apparatus for improving the performance of liquid waste evaporators An improved method of and apparatus rendering water-based fluid waste stream evaporation operations environmentally and otherwise safe, involving separately and independently existing the hot gas stream produced by fuel combustion and the vaporized fluid-... | 01/21/1992 |
| 5037510 | Integrated water distiller and/or water heater and/or furnace An integrated system provides combined space heating, water heating and water distillation. The system is adapted for supplying combined services to residential and commercial buildings. The system may be used in retrofitting existing space heating furnac... | 08/06/1991 |
| 4981555 | Process and apparatus for concentrating a solution The solutions are concentrated by multiple-effect evaporation in indirectly heated evaporators. The highest concentration of the solution is reached in a final evaporator stage, which is heated with live steam. The final evaporators stage includes two to ... | 01/01/1991 |
| 4963231 | Method for evaporation of liquids Process for the evaporative concentration of liquids. Vaporization is carried out by indirect heat exchange with a heating fluid in an evaporator. The vapor produced in the evaporator is thereafter condensed in a condenser by indirect heat exchange with a... | 10/16/1990 |
| 4946558 | Water distilling apparatus A water distiller is provided which is used in conjunction with a hot water heater where normally wasted energy is used to preheat the hot water heater inlet. The distiller includes a heat storage tank, an evaporator tank having a water inlet, a heater an... | 08/07/1990 |
| 4909899 | Method of concentrating sludges A method of concentrating sludges wherein liquor is heated under pressure indirectly with flue gases from the combustion of previously concentrated sludge, after which the sludge is caused to expand or subjected to reduced pressure which results in evapor... | 03/20/1990 |
| 4894123 | High efficiency water distiller A highly efficient distillation unit is provided for heating water and condensing the generated steam to remove the contaminants from the water. Efficiency is enhanced by providing a compact air cooled fin-and-tube heat exchanger which removes heat from t... | 01/16/1990 |
| 4880504 | Vacumm distillation system with spiralled cold coil An improved vacuum distillation system is disclosed for purifying contaminated liquids, such as seawater, brackish water and chemical effluents. In the preferred embodiment, the system includes a vertical separation chamber in which contaminated liquid (e... | 11/14/1989 |
| 4872949 | Process for treatment of drilling mud Used drilling muds containing substantial quantities of organic liquids and water-soluble salts are treated to render them environmentally acceptable for disposal purposes, by drying the muds to evaporate all liquids, aqueous and non-aqueous, preferably i... | 10/10/1989 |
| 4863567 | Fluid distillation apparatus The invention is a fluid distillation apparatus (10) which, in its preferred embodiment, includes a cylindrical portion (12) which mates with an end wall (14) and a bell portion (16) to form an enclosed volume (18) within which evaporization and condensat... | 09/05/1989 |
| 4830710 | Apparatus for recycling solvents A portable apparatus for on-site clean-up of dirty solvents. An open top liner for receiving dirty solvent is provided in a still housing. A head sits down over the top of the liner to form an enclosed space. Hot heating oil is provided beneath the liner ... | 05/16/1989 |
| 4828660 | Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids A continuous process and apparatus for the repurification of ultrapure liquids. An oxidant solution comprising ultrapure sulfuric acid, peroxydisulfuric acid, and ultrapure water is continuously withdrawn from a process after use. The withdrawn oxidant is... | 05/09/1989 |
| 4826575 | Apparatus for production of high-purity water by microwave technology A laboratory apparatus for continuously producing high purity distilled water includes a distillation flask, a carboy and condenser unit. A double walled microwave oven with a spacing between the walls, large enough to accommodate piping and valving means... | 05/02/1989 |
| 4789428 | Method for evaporation of spent liquor The invention relates to a method for evaporation of spent liquor by heat from a blow condenser where blow steam from a pulp cooker is condensed in a direct condenser connected with a hot water accumulator. Spent liquor heated indirectly by hot water from... | 12/06/1988 |
| 4778535 | Vapor generating and recovery apparatus and process An apparatus for vaporizing and recovering, by condensation, a composite mixture of at least two components, at least one of which is a liquid. The apparatus includes at least one chamber in which the mixture is brought to boiling and includes means to co... | 10/18/1988 |
| 4770748 | Vacuum distillation system An improved vacuum distillation system is disclosed for purifying contaminated liquids, such as seawater, brackish water and chemical effluents. In the preferred embodiment, the system includes a vertical separation chamber in which contaminated liquid (e... | 09/13/1988 |
| 4734167 | Distillation apparatus A compact and energy efficient water distillation unit is disclosed including a housing divided by shared interior walls into deaerator, heater and evaporator chambers. A deaerator is mounted in the deaerator chamber. An evaporator is mounted in the evapo... | 03/29/1988 |
