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| Number | Title | Issue Date |
| 7435317 | Desalination of ocean water An improved distillation of water. involves distilling significant quantities of water at temperatures well below the boiling point. During distillation, a compound is taken from a liquid-phase to a gas-phase and then condensed to the liquid-phase again to get a pur... | 10/14/2008 |
| 7431806 | Low energy vacuum distillation method and apparatus A sub-atmospheric pressure desalinating still employs a closed top, open bottom pipe filled with source water to be distilled, such as seawater, having a height greater than the height of a column of seawater that can be supported by the pressure at the bottom of th... | 10/07/2008 |
| 7368039 | 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... | 05/06/2008 |
| 7347918 | Energy efficient evaporation system An evaporation system uses the weight of condensed liquid as an energy source. An inlet feed is introduced into an enclosure through an inlet. The inlet feed is vaporized in an evaporation region of the enclosure, and condensed to a liquid in a condensation region o... | 03/25/2008 |
| 7279075 | Thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers In a thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column containing sieve trays as separating internals, at least some of the sieve trays are operated ... | 10/09/2007 |
| 7150809 | Thermal separating process (Meth)acrylic monomers are separated by a thermal separation process by ascending at least one ascending gaseous stream in a separating column containing a sequence of mass transfer trays and a liquid stream that contains dissolved polymerization inhibitor which des... | 12/19/2006 |
| 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 |
| 6699369 | Apparatus and method for thermal desalination based on pressurized formation and evaporation of droplets A method for removing dissolved solids, particularly salts, from water. An apparatus for performing the inventive method is disclosed. The aqueous solution to be treated, for example sea water, is atomized using special non-pneumatic nozzles, and sprayed ... | 03/02/2004 |
| 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 |
| 6685802 | Process and apparatus for removing dissolved and undissolved solids from liquids This invention relates to a continuous process and an apparatus (1) for removing dissolved and undissolved solids and/or high boiling point liquid contaminants from a mixture of miscible liquids (9). A recycle liquor stream (6) is fed at high velocity thr... | 02/03/2004 |
| 6638398 | Methods for the evaporation of an aqueous solution containing ammonia A method including evaporating aqueous solutions containing ammonia, adding an acid to the evaporated vapor flow to form an ammonium salt, and condensing the vapor flow to form a liquid containing the salt. By this method the ammonia formed into a salt is... | 10/28/2003 |
| 6585862 | Apparatus and method for handling easily polymerizable compound The present invention provides an apparatus for handling an easily polymerizable compound such as (meth)acrylic acid which includes a tubular member that is furnished to a side wall of the apparatus and opened to the inside of the apparatus, specifically,... | 07/01/2003 |
| 6500216 | Method and apparatus for desalinating sea water, natural salt and fresh water A method and an apparatus of producing natural salt or fresh water by treating sea water in an extremely short period of time and with high efficiently. The distilled water and salt components are treated for expediting crystallization of the salt compone... | 12/31/2002 |
| 6409886 | Process for inhibiting the polymerization of easily-polymerizable compounds In distillation of easily polymerizable compounds such as (meth)acrylic acid and (meth)acrylic esters using a distillation unit, a liquid having substantially the same composition with that of a liquid surrounding a constitutive member placed in the disti... | 06/25/2002 |
| 6348136 | Method and apparatus for the purification of vinyl aromatic compounds The present invention is directed to an apparatus and method for the distillation of a readily polymerizable vinyl aromatic compound employing a polymerization inhibitor. The vinyl aromatic compound is subjected to distillation in at least one fractionati... | 02/19/2002 |
| 6299735 | Method for solid-liquid separation in water-based solutions An array of sonic hydraulic nozzles for injecting a mixture of water with dissolved or suspended particulate into a chamber to form a continuous spray of spherical droplets. Low pressure areas form in the wakes of the droplets which promotes a phase chang... | 10/09/2001 |
| 6294056 | Distillation method and distillation apparatus In a method for distilling (meth)acrylic acid and/or (meth)acrylic ester, the method has the step of uniformly distributing a supply liquid in a distillation tower over an entirety of a horizontal cross sectional area in the distillation tower. A distilla... | 09/25/2001 |
| 6045660 | Mechanically assisted two-phase contactor and fuel ethanol production system Apparatus for use in the rectification of liquid mixtures (separation of liquid mixtures into their constituents) and other processes requiring equilibration of liquid and gaseous phases in which mechanical energy is used to create and repeatedly regenera... | 04/04/2000 |
| 6027607 | Salt extraction process and device A process for extracting salt from brine contained in at least one open evaporation basin. At least part of the brine is heated in a heating unit located outside the evaporation basis and returned to the evaporation basin. The heating unit is driven by wa... | 02/22/2000 |
| 5993608 | Process for recovering processing liquids A process for recovering processing liquids such as gas-treating liquids wherein a feed mixture containing the processing liquid and components or impurities that are more volatile and less volatile than the processing liquid is initially heated in a firs... | 11/30/1999 |
| 5980694 | Apparatus for the purification of water contaminated with oil An installation for cleaning oil-polluted water, in particular at oil and gas production plants, is provided with a distillation column having a polluted water feed and at least one contact packing above which the outlet of the polluted water feed is loca... | 11/09/1999 |
| 5928469 | Process for storage of materials Materials which are not themselves storage-stable at room temperature are made suitable for storage by mixing them with a carrier substance and spray drying the resulting mixture so as to form particles containing both the material and the carrier substan... | 07/27/1999 |
| 5902457 | Spray generators An apparatus for generating a liquid spray from two jets of fluid which issue from a pair of opposing nozzles and interact, wherein the fluid is supplied to the nozzles under fully turbulent conditions such that random variations in the momentum of the fl... | 05/11/1999 |
| 5849982 | Recovery of styrene from pyrolysis gasoline by extractive distillation An extractive distillation process for separating at least one substituted unsaturated aromatic from a pyrolysis gasoline mixture, containing said aromatic and at least one close-boiling aromatic or non-aromatic hydrocarbon, employing a two part extractiv... | 12/15/1998 |
| 5817729 | Vapor precipitation of polymers from solvent polymer blends by azeotropic spray drying A process for removing contaminating solvents from solutions containing solid solutes comprising contacting a co-solvent that forms an azeotrope with the contaminating solvent forming a mixture thereby and spray drying the contaminating solvent co-solvent... | 10/06/1998 |
| 5738762 | Separating oil and water from emulsions containing toxic light ends An improved process for separating oil and water from an emulsion containing toxic light ends by flashing the heated and pressurized emulsion, condensing and separating the vaporized water and light ends, recovering the light ends, and recycling the conde... | 04/14/1998 |
| 5695614 | Method for processing waste liquids in particular industrial waste water having a high solids content A method for processing waste liquids, having high solids content. The process includes the steps of spraying and evaporating the waste liquid together with a dry gas in a counterflow of dry gas within a spray tower, collecting the solids of the waste wat... | 12/09/1997 |
| 5676802 | Apparatus for treating waste water An improved apparatus for treating waste water containing volatile and corrosive substances by steam-stripping to remove the volatile and corrosive substances from the waste water. The apparatus has a liquid pooling zone installed at a part over the waste... | 10/14/1997 |
| 5624534 | Volatiles separator and concentrator An apparatus and method for stripping volatiles from a feed stream and concentrating the volatiles in the overhead vapors forming a condensate product and simultaneously producing a low percent volatiles outlet stream as a concentrate product. The volatil... | 04/29/1997 |
| 5615492 | Drying of water-containing useful materials or mixtures thereof with superheated steam A process for drying water-containing materials in a closed-circuit system using a vertical drying tower having inlets located at a lower portion of the tower, the inlets circulating superheated steam in countercurrent to the water-containing materials de... | 04/01/1997 |
| 5601688 | Method of and means for spraying droplets The horizontal distance traveled by droplets of starting solution sprayed into a gaseous medium above a catch basin, where the gaseous medium has a horizontal velocity component is controlled by controlling the size of the droplets as a function of the ho... | 02/11/1997 |
| 5578173 | Removal of dimethylterephthalate from a methanolysis vapor stream A method of removing dimethyl terephthalate (DMT) from a vapor stream. The vapor stream includes dimethyl terephthalate (DMT), methylhydroxyethyl terephthalate (MHET), glycols and methanol. A distillation column is held under an elevated pressure of 100 t... | 11/26/1996 |
| 5509996 | Method of evaporating and cooling liquid A method for evaporating a starting solution to produce an end solution by spraying the starting solution into a gaseous medium under the conditions that the heat content of the starting solution in contact with the gaseous medium is smaller than the heat... | 04/23/1996 |
| 5458739 | Volatiles separator and concentrator An apparatus and method for stripping volatiles from a feed stream and concentrating the volatiles in the overhead vapors forming a condensate product and simultaneously producing a low percent volatiles outlet stream as a concentrate product. The volatil... | 10/17/1995 |
| 5421962 | Desalination plant for salt water using solar energy The present invention relates to water treatment using solar energy. The desalination plant includes an evaporator-desalter communicating with an intake system for water to be desalinated and a vapour and condensate discharge system. The evaporator is essentia... | 06/06/1995 |
| 5395483 | Rotary apparatus for combined multi flashing and boiling liquids A distillation apparatus by flashing and boiling of solution and condensing the resulting steam having a central rotating partitioned brine conduit with coupling to a two-disk centrifugal distributor and a wiping blade system in a chamber having at least ... | 03/07/1995 |
| 5389209 | Production of high quality maple syrup A process for making a light color maple syrup from a water-containing sap. In a first step, the sap is boiled under normal pressure to evaporate part of the water contained therein in the form of steam, to form the maple syrup and to develop caramelized ... | 02/14/1995 |
| 5360511 | Apparatus and method for spray drying solids-laden high temperature gases An apparatus and method for spray drying a mixture of a liquid containing dissolved solids and a high temperature gas containing molten solids employs a gas flow retarding auxiliary chamber upstream of a spray drying main chamber for retarding the rate of... | 11/01/1994 |
| 5264078 | Apparatus and method for spray drying solids-laden high temperature gases An apparatus for spray drying a mixture of a liquid containing dissolved solids and a high temperature gas containing molten solids employs a gas flow retarding auxiliary chamber upstream of a spray drying main chamber for retarding the rate of flow of ga... | 11/23/1993 |
| 5259931 | Stripping tower system for removing volatile components from water containing the same A system for removing volatile constituents (e.g., hydrocarbons) from a liquid (e.g., water) containing the same by which there is a continuous countercurrent contact between the liquid and a forced air flow. Water collected in a reservoir is continuously... | 11/09/1993 |
