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| Number | Title | Issue Date |
| 7438129 | Water treatment method for heavy oil production using calcium sulfate seed slurry evaporation A process for treating produced water to generate high pressure steam. Produced water from heavy oil recovery operations is treated by first removing oil and grease. Feedwater is then acidified and steam stripped to remove alkalinity and dissolved non-condensable ga... | 10/21/2008 |
| 7428926 | Water treatment method for heavy oil production A process for treating produced water to generate high pressure steam. Produced water from heavy oil recovery operations is treated by first removing oil and grease. Pretreated produced water is then fed to an evaporator. Up to 95% or more of the pretreated produced... | 09/30/2008 |
| 7235183 | Glycerine foots salt separation system The present invention provides a method and apparatus for the recovery of salt from a glycerine process, allowing the salt to be used in a brine solution. A salt settling tank is positioned inline between the foots from a crude still bottom and a foot still. Salt se... | 06/26/2007 |
| 7150320 | Water treatment method for heavy oil production A process for treating produced water to generate high pressure steam. Produced water from heavy oil recovery operations is treated by first removing oil and grease. If necessary, the pH is then adjusted, normally downward, releasing at least some carbonate alkalini... | 12/19/2006 |
| 7077201 | Water treatment method for heavy oil production An evaporation based method of treating produced water from heavy oil production. A produced water from heavy oil recovery operations treated by first removing oil and grease to a desired level, preferably to about twenty parts per million, or less. If necessary, th... | 07/18/2006 |
| 7008516 | Method and apparatus for desalinating and concentrating sea water, desalinated deep water and concentrated deep water According to a method of desalinating sea water, sea water sampled from deep sea is injected into a decompression chamber of a reduced pressure tank having a steam chamber, steam at an atmospheric pressure superheated to a boiling temperature or higher by high-frequ... | 03/07/2006 |
| 6984292 | Water treatment process for thermal heavy oil recovery There is disclosed a method and apparatus for treating produced water from a heavy oil thermal recovery unit to achieve water recovery and recycle levels of greater than 80% and as high as 100% to achieve zero discharge criteria. The method includes the initial step... | 01/10/2006 |
| 6866750 | Device for desalination of water and methods of use The present invention provides a device and method for desalinating saltwater which utilizes a heatable vessel wherein is placed a sufficient quantity of a salt which will absorb water of crystallisation and which has a dissolution index of not higher than 10âˆ... | 03/15/2005 |
| 6849155 | Concentrator This invention provides a concentrator capable of drawing out a concentrate of a constant concentration. The concentrator includes a heater having a heating medium that has been heated to a temperature not less than the boiling point of a solution fed to the concent... | 02/01/2005 |
| 6733636 | Water treatment method for heavy oil production A method of treating produced water from heavy oil production to provide feedwater for the production of high quality steam. A produced water from heavy oil recovery operations is initially treated by first removing oil and grease to a desired level, preferably to a... | 05/11/2004 |
| 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 |
| 6649027 | Water reclamation system A water reclamation system for a closed environment includes a mixer that receives brine. A processor is downstream of the mixer, with the processor distilling substantially salt-free water from the brine in the substantial absence of salt crystallization... | 11/18/2003 |
| 6582552 | Method and device for evaporating liquid A liquid evaporation method and apparatus wherein the contamination of the heat transfer surfaces is avoided by using a special circulating fluid. The liquid to be evaporated is heated in direct contact with the circulating fluid and conveyed to a vapor s... | 06/24/2003 |
| 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 |
| 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 |
| 6391361 | Production of protein-containing powdery product A method is provided for producing a powdery product from a protein-containing liquid having a dry solid content, providing (1) a first feeding stream of protein-containing liquid, (2) a second feeding stream having a higher content of dry solids than the... | 05/21/2002 |
| 6335045 | Concentration of liquid products A method for concentration of a liquid food product, the liquid product having a dry solid content of a least 40 percent and the liquid food product comprising crystallizable components, comprising the steps of heating the liquid food product to a tempera... | 01/01/2002 |
| 6218592 | Method and apparatus for the treatment of radioactive evaporator concentrates from nuclear plants A method for the treatment of radioactive evaporator concentrates from the evaporation system of nuclear plants comprises the steps of (a) freeing the evaporator concentrates from undissolved components, (b) crystallizing the sodium sulfate contained in the evapora... | 04/17/2001 |
| 6086722 | Minimizing evaporator scaling and recovery of salts during gasification A process for minimizing evaporator scaling during the recovery of liquids and solids from the aqueous effluent discharged during a partial oxidation gasification, wherein the aqueous effluent contains ammonium chloride (NH4 Cl). The aqueous ef... | 07/11/2000 |
| 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 |
| 6001246 | Process for the reclamation of process water from process wastewater generated in the battery manufacturing industry and other metals related industries A process wastewater treatment plant, and a process relating thereto, which converts process wastewater generated in battery manufacturing and the like into clean process water and sodium sulfate salt by treating the process wastewater to remove impuritie... | 12/14/1999 |
| 5984981 | Salt making method and apparatus A salt making method comprising putting a crude salt-water mixture (5) comprising crude salt or rock salt and bittern in a vessel (1), blowing the air from a pipe (7) into the mixture (5) with a pump (9), crystallizing the component salt out of the mixtur... | 11/16/1999 |
| 5857269 | Process for manufacturing fatty alcohol sulfate products A process for manufacturing improved granulated fatty alcohol sulfates. The process includes slowly drying and mechanically mixing the fatty alcohol sulfate.... | 01/12/1999 |
| 5575923 | Salt basket for crystallizer and method of use in zero liquid discharge industrial facilities An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet f... | 11/19/1996 |
| 5472622 | Salt basket for crystallizer and method of use in zero liquid discharge industrial facilities An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet f... | 12/05/1995 |
| 5423288 | Apparatus for producing seed crystals An apparatus for producing seed crystals in melts has a vertically oriented, closed vessel having a vessel base and having at least one inlet for the melt and having at least one outlet opening for the inoculated melt provided with seed crystals. A prefer... | 06/13/1995 |
| 5366716 | Method for recovering sulphur dioxide from the chemical circulation of a sulphate pulp mill Sulphur dioxide is separated from the flue gases of a cellulose pulp mill by absorbing it into a sodium sulphite solution. Sulphur dioxide is regenerated from the sodium bisulphite solution produced by an evaporation-crystallization method utilizing therm... | 11/22/1994 |
| 5133807 | Process and installation for the continuous production of sugar crystals A two-stage crystallization for the continuous production of sugar crystals from syrup comprises crystallizing the syrup in a first stage by subjecting the syrup to a sufficient heat of evaporation to produce a massecuite comprising water and a small cont... | 07/28/1992 |
| 5122233 | Apparatus for the treatment of mixture of brines and contaminated mineral salts An apparatus including a device 1 for separating organic components from a process mixture, a vacuum evaporation device 4 for partially drying the mineral salts or mixtures thereof, a device 5 for thermal treatment of the partially dried mineral salts or ... | 06/16/1992 |
| 5006204 | Apparatus for crystallizing whey An apparatus including an evaporator, a pre-crystallizer, a spray dryer and a fluid bed for drying whey and a rotating disc having a cone-shaped upper surface is provided for receiving partially dried whey from the spray dryer and delivering the whey to t... | 04/09/1991 |
| 4352717 | Apparatus for production of spherical grain ferrite powder Apparatus for producing substantially spherical grain ferrite powder comprising a vertical cylindrical vessel in which a slurry of ferrite-forming powdered raw materials in alcohol is sprayed under applied pressure through a spray nozzle into a high tempe... | 10/05/1982 |
| 4318772 | Saturated liquor cooling tower The invention is method and apparatus for removing dissolved solids from water by creating a condition of super-saturation of the solids material within a confined water circuit, propagating the formation of solids by a process of crystal nucleation and c... | 03/09/1982 |
| 4288285 | Apparatus for forming a vortex Apparatus for forming a vortex includes inner and outer wall structures. The inner wall has a downward flow passageway therewithin. A plurality of vanes are provided between the wall structures to induce a vortex to form from an upward flow of liquor thro... | 09/08/1981 |
| 4278494 | Immersion evaporator An immersion evaporator is disclosed having, connected to its evaporation vessel, a pipe for feeding a solution to be concentrated by evaporation into the evaporation vessel, a riser pipe for withdrawing the concentrated solution and any crystals from the... | 07/14/1981 |
| 4276117 | Process of treating potassium chloride brine by evaporation and crystallization Disclosed is an improved method of producing potassium chloride by concentrating a brine thereof with respect to potassium chloride by multiple stage evaporation conducted at progressively higher temperatures, thereby precipitating other salts and thereaf... | 06/30/1981 |
| 4252602 | Apparatus for recovering nitric acid and hydrofluoric acid from solutions Apparatus is disclosed for treating pickling solutions used for pickling metal, such as iron, steel, special alloys, or the like. In a preferred embodiment, the apparatus includes an evaporator, a condensor, a crystallizer, a crystal-separating device, fi... | 02/24/1981 |
| 4251502 | Modular chlorine dioxide generation systems A modular chlorine dioxide generating unit (10) is disclosed wherein recycled reaction mixture passes along a flow path (18) internally of the generator vessel (12) out of direct fluid flow communication with the reaction medium (13) from the lower end (1... | 02/17/1981 |
| 4246242 | Method of removing gaseous pollutants from flue gas A spray dryer apparatus is used to bring a water solution or slurry of finely-divided, basic reactant into intimate contact with a flue gas bearing acidic gases or vapors. The basic material reacts with the acids in the flue gas to form a particulate prec... | 01/20/1981 |
| 4245998 | Method and apparatus for crystallization of solution containing salts To remove salts from a solution containing the salts, hot air is injected downwards into the solution in a concentrator, and the solution is concentrated by direct contact with the hot air, thereby enhancing an evaporation efficiency in the concentrator a... | 01/20/1981 |
| 4231840 | Method of concentrating an aqueous solution by multiple effect evaporating Disclosed is an improved method of concentrating an aqueous solution containing a first salt and a second salt, the solubility of the first salt increasing more with increasing temperature than the solubility of the second salt, by multiple effect evapora... | 11/04/1980 |
