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| Number | Title | Issue Date |
| 7378536 | Method for producing propylene oxide Process for preparing propylene oxide, which comprises at least the steps (iii) and (iv) (iii) separating off propylene oxide from a mixture (M1) comprising propylene oxide and at least one solvent by distillation in a distillation column, giving a bott... | 05/27/2008 |
| 6846390 | Methods for using hydrophobic liquid to compress steam Methods for using a hydrophobic liquid, such as mineral oil, to compress steam include using a compressor to compress a mixture of steam and the hydrophobic liquid. One embodiment includes the steam to be compressed coming from a boiling aqueous solution in an evapo... | 01/25/2005 |
| 6802941 | Distiller employing cyclical evaporation-surface wetting A distillation unit (10) employs a rotary heat exchanger (32) forming a multiplicity of evaporation chambers (56) into which a liquid to be purified is sprayed for evaporation. Spray arms (58) spray at a steady rate into all of the evapor... | 10/12/2004 |
| 6740205 | Processing of shipboard wastewater Incoming wastewater is preheated in a heat exchanger before delivery to a flash chamber through an orifice for flashing into water vapor rising into an upper section of the flash chamber which also has a bottom section into which liquid waste oil or other contaminan... | 05/25/2004 |
| 6689251 | Cycled-concentration distiller A distiller (10) that employs a rotary heat exchanger (32) introduces water to be evaporated into evaporation chambers (56). During most of its operation, it collects the water that has passed through the evaporation chamber (56) without evaporating, and ... | 02/10/2004 |
| 6551466 | Multiple effect distillation process with reduced fouling A method and apparatus for removing a contaminant from a fluid feed stream containing the contaminant. The method includes the steps of providing a feed stream and heating it in a first step to at least partially remove some of the contaminants and recove... | 04/22/2003 |
| 6482297 | Method for distilling ammonia The present invention relates to an improved process for distilling ammonia from a mixture, more particular from a mixture resulting from the reaction between aminonitrile and water (which reaction is also called cyclizing hydrolysis). The process for dis... | 11/19/2002 |
| 6402897 | Apparatus for distilling, heating and storing liquid A combination liquid distillation unit and heater, where the distilled liquid is heated to an elevated temperature to effect distillation, and then stored and maintained at an elevated temperature in a hot liquid tank. Thermal communication between the di... | 06/11/2002 |
| 6375803 | Mechanical vapor recompression separation process A method and apparatus for removing a contaminant from a fluid feed stream containing the contaminant. The method includes the steps of providing a feed stream (10) and heating it in a first step (18) to at least partially remove some of the contaminants ... | 04/23/2002 |
| 6365005 | Apparatus and method for vapor compression distillation An improved design of a vapor compression distiller which makes use of a rapid, highly turbulent flow through the heat-of-evaporation recovery, or primary, heat exchanger. The distiller may also include the use of turbulators to increase turbulence and mi... | 04/02/2002 |
| 6355145 | Distillation process with reduced fouling A method for removing a contaminant from a fluid feed stream containing the contaminant. The method includes the steps of providing a feed stream and heating it in a first step to at least partially remove some of the contaminants and recover energy from ... | 03/12/2002 |
| 6280578 | Operation process of a pumping-ejection stand for distilling liquid products Essence of the invention is a: a liquid, whose saturated vapour pressure is not less than the pressure at the top of a rectification column, is delivered into the nozzle of a liquid-gas jet apparatus as a motive liquid; the pressure maintained in a separa... | 08/28/2001 |
| 6261419 | Rotating plate heat exchanger The invention relates to an improved evaporator and condenser unit for use in distilling a liquid such as water. The evaporator and condenser unit includes a plurality of stacked, spaced-apart plates disposed within a housing. The plates are horizontally ... | 07/17/2001 |
| 6238524 | Rotating plate heat exchanger The invention relates to an improved evaporator and condenser unit for use in distilling a liquid such as water. The evaporator and condenser unit includes a plurality of stacked, spaced-apart plates disposed within a housing. The plates are horizontally ... | 05/29/2001 |
| 6120651 | Method for removing water from an aqueous fluid mixture A method permits concentration of a water-miscible organic liquid in a mixture of such liquid and water, with recovery of a desired concentrate of the water-miscible organic liquid and water, and a relatively clean water containing only a very low contest... | 09/19/2000 |
| 5968321 | Vapor compression distillation system and method Distillation system having an evaporator/condenser core with heat transfer plates welded together along their edges to form alternate boiling and condensing chambers. Feed liquid is supplied to the boiling chambers through a pair of heat exchangers which ... | 10/19/1999 |
| 5928477 | Method and apparatus for removing water from an aqueous fluid mixture A method and apparatus permits concentration of a water-miscible organic liquid in a mixture of such liquid and water, with recovery of a desired concentrate of the water-miscible organic liquid and water, and a relatively clean water containing only a ve... | 07/27/1999 |
| 5925223 | Process for improving thermal efficiency while producing power and desalinating water A process and apparatus for improving the thermal efficiency of a steam turbine power generating plant while simultaneously desalinating seawater or brine and purifying water which contains minerals, salts, and other dissolved solids. Exhaust gases from a... | 07/20/1999 |
| 5906714 | Method for treating emulsified liquids A method of separating water from an aqueous emulsion using a minimum of energy includes heating the aqueous emulsion in a sump, conveying concentrated emulsion from the sump to a heat exchanger so as to pass therethrough back to the sump, circulating wat... | 05/25/1999 |
| 5738761 | Sewage treatment process and apparatus A waste water treatment system includes a preliminary first stage separator for separating an aqueous phase from other materials. A pressure vessel sedimentation follows for removing most of the remaining solids from the waste material. The liquid and a m... | 04/14/1998 |
| 5599429 | Water distillation system The water distillation system according to the invention recaptures and utilizes the inherent heat of transformation in converting from the vapor to the liquid states. The water distillation system efficiently removes volatile gases and impurities from th... | 02/04/1997 |
| 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 |
| 5591310 | Distillation An apparatus for distillation of a liquid near or above its critical point wherein the liquid contains a dissolved solid. The apparatus includes a separation section wherein the liquid may be separated into a vapor and a liquid residue separated by a liqu... | 01/07/1997 |
| 5587054 | Vapor compression distillation system A vapor compression distillation system including a boiler/condenser assembly wherein a portion of the condensate is redirected back to the condenser inlet to extract superheat from the compressed vapor and transfer it to the liquid in the boiler. The vap... | 12/24/1996 |
| 5512142 | Process and device for purifying organically polluted waste water A process and device for purifying organically polluted waste water utilizing a primary system and a closed secondary system. The primary system includes a first heat exchanger, a second heat exchanger and a cyclone located between the two heat exchangers... | 04/30/1996 |
| 5366514 | Salt plant evaporation This invention relates to an evaporative salt plant installation including methods of operation and apparatus which produce high purity salt economically and in high yield comprising the combination of a gas turbine which drives a vapor compressor, whose ... | 11/22/1994 |
| 5300197 | Distillation apparatus with porous membrane and heat pump A distillation apparatus includes a distillation unit for distilling feed water. The distillation unit includes an evaporation part, a condensation part and a hydrophobic porous membrane interposed between the evaporation part and the condensation part, w... | 04/05/1994 |
| 5232556 | Water desalination apparatus A water desalination apparatus which is constructed of a main housing which includes a condensation chamber and a vapor chamber located above the condensation chamber. Brackish water is to be supplied into the vapor chamber with this brackish water to pro... | 08/03/1993 |
| 5227027 | High efficiency water distillation apparatus using a heat pump system and process for use thereof A water distillation system and process capable of high efficiency operation used in combination with a heat pump system wherein the water distillation apparatus includes a water pre-heating device positioned within the feed water to heat the feed water t... | 07/13/1993 |
| 5171455 | Method and apparatus for separation of toxic contaminants by nebulization Small quantities of one or more liquids having a low boiling point dispersed with a large quantity of one or more immiscible liquids having a higher boiling point are separated in a rapid and efficient manner. A non-reactive gas (nitrogen, helium, air, or... | 12/15/1992 |
| 5156706 | Evaporation of liquids with dispersant added A vertical tube evaporation process for the concentration of saline water and other liquids, including the addition of an anionic mono-molecular dispersant thereto which interacts with materials precipitated during concentration and inhibits the formation... | 10/20/1992 |
| 4954223 | Distillation apparatus A distillation apparatus including a pair of vertical lower vessels each open at its upper end, and a pair of elongate upper vessels each having an open lower end, slidably mounted in a respective one of the lower vessels. A heat exchanger is mounted in e... | 09/04/1990 |
| 4830711 | Installation for separating a solvent from a mixture of solvent and hydrocarbons A method of and system for recovering a solvent from a mixture of solvent and hydrocarbons, the system comprising at least two evaporation flasks successively fed with a charge consisting of said mixture to be separated, at least one steam generator perfo... | 05/16/1989 |
| 4778001 | Heat exchange method and apparatus There is disclosed a method and apparatus for exchanging heat between a first fluid and a second fluid immiscible with said first fluid comprising the step of presenting one of said fluids in finely divided form for direct contact with the others. One flu... | 10/18/1988 |
| 4713089 | System and method for removing volatile components from an aqueous medium A system and method is disclosed for removing dissolved organic impurities, such as gasoline or other hydrocarbons, from groundwater. The contaminated water is fed into a stripper column, operated under a deep vacuum, to enable the water to enter the colu... | 12/15/1987 |
| 4710272 | Distilling apparatus An apparatus for distilling a source liquid which utilizes a substantially vertical liquid column. The liquid column is contained by a tubular container closed at the top and open at the bottom. The open bottom of the tubular container is submerged within... | 12/01/1987 |
| 4698136 | Process for the continuous production of boiler feed water A process for the continuous production of boiler feed water from process waters in the oil extraction industry during which salts and hydrocarbons are removed from the water, without Fe++ precipitating. The heavy hydrocarbons are mechanically... | 10/06/1987 |
| 4668345 | Desalination apparatus and method for recovering fresh water Desalination apparatus comprising a vessel, an evaporation surface for receiving saline water in the vessel, a condensation chamber arranged in the vessel beneath the evaporation surface, an evaporation chamber arranged in the vessel above the evaporation... | 05/26/1987 |
| 4636284 | Process for the separation of water from a water-containing mixture or azeotrope with an extractant, and for the separation of water from said extractant A process for the separation of water from a water-containing mixture of azeotrope, with an extractant which removes water from the mixture or azeotrope, recovery of the non aqueous portion of the mixture or azeotrope as a product, and regeneration of the... | 01/13/1987 |
| 4594131 | Process for removing ammonia and acid gases from process streams A water purification process is described for the removal of ammonia and optionally one or more acid gases from wastewaters such as coke-plant or coal conversion wastewaters. The process involves adding alkali to these wastewaters in amounts sufficient to... | 06/10/1986 |
