Apparatus For Graining And Separating Crystals Patents (Class 159/45)
  • Patent number: 10040004
    Abstract: A method for static mixing in a waste water settling tank to increase the percentage of recovery of entrained solids from the waste water comprising a settling tank having a hopper bottom defining a sludge hopper, a deflector dome centrally disposed within the space contained in the hopper bottom, and an inlet pipe for introduction of waste water containing second entrained solids into the settling tank and having a discharge outlet in proximity to the underside of the deflector dome. Influent waste water is directed vertically upward into the center of the deflector dome which distributes the influent radially into contact, preferably turbulent, with previously introduced waste water containing first entrained solids to cause coalescence of the first and second entrained solids to form larger particles having increased settling velocity.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 7, 2018
    Assignee: ClearCove Systems, Inc.
    Inventors: Terry Wright, Kimberly A. Miller, Timothy D. McCrossen
  • Patent number: 10040697
    Abstract: A method for static mixing in a waste water settling tank to increase the percentage of recovery of entrained solids from the waste water comprising a settling tank having a recirculation ring and a hopper bottom defining a sludge hopper, a fluid deflector centrally disposed within the space contained in the hopper bottom having a flat portion, and an inlet pipe for introduction of waste water containing second entrained solids into the settling tank and having a discharge outlet in proximity to the underside of the deflector dome and a nozzle facing downward. Influent waste water is directed vertically downward toward the flat portion and upward into the center of the fluid deflector which distributes the influent radially into contact, preferably turbulent, with previously introduced waste water containing first entrained solids to cause coalescence of the first and second entrained solids to form larger particles having increased settling velocity.
    Type: Grant
    Filed: October 3, 2015
    Date of Patent: August 7, 2018
    Assignee: ClearCove Systems, Inc.
    Inventors: Terry Wright, Qausarali Goriawala
  • Patent number: 9776104
    Abstract: Disclosed are processes and apparatuses for producing a crystalline product. The processes and apparatuses may extend the operational time of an evaporative crystallizer by providing an internal volume or large deposit inventory for fouling deposits to reside without impacting the unit operation.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 3, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Timothy C. Frank, J. W. Moore, Paul A. Larsen, Pramod D. Patil, Robert M. Whittingslow, Paul A. Gillis
  • Patent number: 9440862
    Abstract: A device and method of accelerating the evaporation of wastewater and concentration of solids wherein an evaporative material contacts wastewater allowing the wastewater to migrate onto the surface of the evaporative material where the sun and wind evaporates the wastewater in an accelerated manner due to the configuration of the evaporative material.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: September 13, 2016
    Inventor: Shafiq Ur Rahman
  • Patent number: 8894810
    Abstract: A floating salt farm in which its purpose is to produce crystallized salt and bittern at offshore locations through the evaporation process using extracted seawater. The floating salt farm components can be consisted of a seawater tank, an evaporator tank, a heating tank, a deposit tank, a storage tank, and photovoltaic panels, which these components are installed onto the buoyant foundation. The evaporator tank component can consist of an evaporator plate and an evaporator bin. The evaporator plate, which captures the produced crystallized salt during the evaporation process, has a sieve surface. The contents inside the evaporator bin can affect the properties of the produced crystallized salt and bittern, such as their mineral compositions, during the evaporation process. The seawater can be extracted from desired water depths and/or in the proximity of volcanic sites, in which the seawater can have affected mineral compositions due to volcanic activity.
    Type: Grant
    Filed: October 28, 2012
    Date of Patent: November 25, 2014
    Assignee: Pioli Systems Inc.
    Inventor: Jae Hyun Lim
  • Publication number: 20140338843
    Abstract: Disclosed are processes and apparatuses for producing a crystalline product. The processes and apparatuses may extend the operational time of an evaporative crystallizer by providing an internal volume or large deposit inventory for fouling deposits to reside without impacting the unit operation.
    Type: Application
    Filed: December 14, 2012
    Publication date: November 20, 2014
    Inventors: Timothy C. Frank, J.W. Moore, Paul A. Larsen, Pramod D. Patil, Robert M. Whittingslow, Paul A. Gillis
  • Patent number: 8877016
    Abstract: Systems and methods for solar steam generation are described. The systems and methods include moving at least one frame mounted optical focusing lens to track the sun in two axes and disposing a water boiler at a focus of each optical focusing lens. Raw water is pumped through an inlet at a bottom of each boiler and solar energy is concentrated, using each optical focusing lens, on each boiler, heating the raw water in each boiler and evaporating steam from the raw water. The steam exits each boiler, via a steam outlet pipe. Remaining salts and solids in each boiler are ground by rotation of salt grinding-cleaning gears. These ground salts and solids are drained and/or pumped out of each boiler from an exit in the bottom of each boiler.
    Type: Grant
    Filed: November 6, 2011
    Date of Patent: November 4, 2014
    Assignee: King Saud University
    Inventors: Mazen A. Ba-abbad, Hany A. Al-Ansary, Essam A. Al-Ammar
  • Patent number: 8763426
    Abstract: A system and method for separating at least a part of the solids from brine having an initial temperature T1, the system comprising a crystallizer comprising a crystallizer inlet for receiving therein said brine, a crystallizer first outlet for discharging vapor having a first pressure P1, evaporated from at least a part of said brine, and a crystallizer second outlet for discharging a slurry having a final temperature T2 lower than said initial temperature T1; a separator comprising a separator inlet for receiving therein said slurry, a separator first outlet for discharging therefrom said part of the solids separated from said slurry, and a separator second outlet for discharging therefrom a remaining liquid having a temperature substantially equal to T2; a compressor comprising a compressor inlet for receiving therein said vapor, and a compressor outlet for discharging therefrom a compressed vapor having a second pressure P2 higher than said pressure P1; and a condenser comprising a condenser first inlet f
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: July 1, 2014
    Assignee: I.D.E. Technologies Ltd.
    Inventors: Yeshayahu Rotstein, Tuvia Zisner, Joseph Weinberg, Avraham Ophir
  • Patent number: 8696870
    Abstract: Device for desalinating sea water comprising a unit (10) for spraying sea water in the form of droplets, a unit (20) for vaporizing the droplets into steam, a unit (30) for separating steam from salt particles, and a unit (40) for condensing steam into fresh water. The spraying unit comprises a sea water entry (12), an ambient-temperature dry air entry (14), and a device for generating acoustic waves at a frequency greater than 1 MHz focused by means of nozzles (17) receiving the sea water coming from the sea water entry so as to obtain microdroplets having a diameter comprised between about 2.5 microns and about 5 microns.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: April 15, 2014
    Inventors: Charles Pallanca, Henri Renggli, Gil Ching
  • Patent number: 8636973
    Abstract: The present invention relates to means and methods for producing crystals or crystalline substances. In particular, crystals or crystalline substances which are useful as pharmaceutical ingredients can be manufactured.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: January 28, 2014
    Assignee: Biosyn Arzneimittel GmbH
    Inventors: Thomas Stiefel, Ortwin Kottwitz
  • Patent number: 7681643
    Abstract: A process for conditioning of wastewater treatment brines for deep well injection during recovery of heavy hydrocarbon oils in situ. High pressure steam is used to mobilize oil, which is recovered in a mixture of oil and produced water. The produced water is pre-treated by removing residual oil. The remaining water is acidified and steam stripped to remove non-hydroxide alkalinity and non-condensable gases, and is then fed to a crystallizing evaporator, where it is evaporated from a circulating brine slurry to produce (1) a distillate stream having a trace amount of residual solutes, and (2) evaporator blowdown stream containing, as dissolved or suspended solids, substantially all of the solutes from the produced water feed. The distillate stream is used as boiler feedwater, either directly or after polishing. The evaporator blowdown is conditioned to remove substantially all suspended solids and to produce a clear brine solution for deep well injection.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: March 23, 2010
    Assignee: GE Ionics, Inc.
    Inventor: William F. Heins
  • Patent number: 7438129
    Abstract: 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 gases. Pretreated produced water is then fed to an evaporator. Up to 95% or more of the pretreated produced water stream is evaporated to produce (1) a distillate having a trace amount of residual solutes therein, and (2) evaporator blowdown containing substantially all solutes from the produced water feed. The distillate may be directly used, or polished to remove the trace residual solutes before being fed to a steam generator. Steam generation in a packaged boiler, such as a water tube boiler having a steam drum and a mud drum with water cooled combustion chamber walls, produces 100% quality high pressure steam for down-hole use.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: October 21, 2008
    Assignee: GE Ionics, Inc.
    Inventor: William F. Heins
  • Patent number: 7428926
    Abstract: 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 water stream is evaporated to produce (1) a distillate having a trace amount of residual solutes therein, and (2) evaporator blowdown containing substantially all solutes from the produced water feed. The distillate may be directly used, or polished to remove the trace residual solutes before being fed to a steam generator. Steam generation in a packaged boiler, such as a water tube boiler having a steam drum and a mud drum with water cooled combustion chamber walls, produces 100% quality high pressure steam for down-hole use.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: September 30, 2008
    Assignee: GE Ionics, Inc.
    Inventor: William F. Heins
  • Patent number: 7150320
    Abstract: 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 alkalinity as free carbon dioxide. Pretreated produced water is then fed to an evaporator. Up to 95% or more of the pretreated produced water stream is evaporated to produce (1) a distillate having a trace amount of residual solutes therein, and (2) evaporator blowdown containing substantially all solutes from the produced water feed. The distillate may be directly used, or polished to remove the trace residual solutes before being fed to a steam generator. Steam generation in a packaged boiler, such as a water tube boiler having a steam drum and a mud drum with water cooled combustion chamber walls, produces 100% quality high pressure steam for down-hole use.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: December 19, 2006
    Inventor: William F. Heins
  • Patent number: 7077201
    Abstract: 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, the pH is then adjusted, normally downward and by acid addition, to release at least some carbonate alkalinity as free carbon dioxide. Preferably, all non-hydroxide alkalinity is removed, or substantially so, by introducing the feedwater into a decarbonator. Feedwater is introduced into an evaporator, and the feedwater is evaporated to a selected concentration factor to produce (1) a distillate having a small amount of residual solutes, and (2) evaporator blowdown containing residual solids. Distillate may be directly used for steam generation in a once-through steam generator, or polished by ion exchange or electrodeionization prior to feed to a packaged boiler.
    Type: Grant
    Filed: November 30, 2002
    Date of Patent: July 18, 2006
    Assignee: GE Ionics, Inc.
    Inventor: William F. Heins
  • Patent number: 7008516
    Abstract: 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-frequency heating is supplied to the steam chamber at a surrounding of the decompression chamber at an interval of a heat conducting wall therebetween, water in the sea water is evaporated by heating sea water in the decompression chamber and the evaporated water is condensed to thereby provide fresh water. Concentrated sea water remains in the decompression chamber and therefore, the method can be utilized also as a method of concentrating sea water. Salt can be obtained by further evaporating the water of the concentrated sea water as necessary.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: March 7, 2006
    Inventors: Yoshinobu Kozuka, Yoshimasa Shimbo
  • Patent number: 6984292
    Abstract: 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 steps of capturing the waste heat energy from the high pressure steam separator located downstream of the steam generators. Further, transferring the heat energy into a heated separator and reboiler exchanger to distill oil reservoir produced water and recover distilled water and a concentrated brine or solid product. The heated separator concentrated stream is circulated through the reboiler exchanger to maintain from 1% to about 50% mass vapour in the stream returning to the heated separator and prevent fouling and scaling. The apparatus includes a low pressure waste energy separator, heated separator and vapour compressor in combination with a forced circulation circuit to generate the distilled water.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: January 10, 2006
    Assignee: EnCana Corporation
    Inventors: Steve Kresnyak, Alex Braun
  • Patent number: 6866750
    Abstract: 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 10?24. Saltwater is then added to the vessel and brought into contact with the salt, so that the salt will bind water from the saltwater and form a crystal hydrate. The excess saltwater with salt concentrate is drained from the vessel. The salt which has absorbed water tom the saltwater and formed a crystal hydrate is then heated in the vessel, and the pure water from the crystal hydrate is released as water vapour, which is collected and cooled to obtain desalinated water.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: March 15, 2005
    Assignee: Gougel Industri AB
    Inventors: Michail Gougel, Mark Novikov
  • Patent number: 6849155
    Abstract: 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 concentrator—whereby said heater heats the solution to evaporate the solvent to a vapor to make a mixture of the vapor and a liquid—and a gas-liquid separator for dividing the mixture into the liquid and the vapor. The concentrator provides for returning the liquid separated in the gas-liquid separator to the heater, for drawing out a portion of the liquid separated in the gas-liquid separator, for detecting the concentration of an intended component in the drawn out liquid, and for controlling the liquid draw-out so that when the concentration is above a predetermined threshold, liquid draw-out commences, and when the concentration is below the threshold, liquid draw-out stops.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: February 1, 2005
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Kazuyuki Akita, Toshiharu Minoda
  • Publication number: 20040211526
    Abstract: The present invention discloses an improved evaporation method compressing an evaporation material from power into compressed particles or tablets at a predetermined pressure, temperature, and time; since the compressed evaporation material being consistent in crystallization property is more even and denser than powder, therefore the efficiency of the thermal conductivity becomes higher and the efficiency of heating more stable.
    Type: Application
    Filed: April 28, 2003
    Publication date: October 28, 2004
    Inventors: Shu-Wen Chang, Gwo-Sen Lin, Chi-Min Chen
  • Patent number: 6733636
    Abstract: 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 about twenty parts per million, or less. The pH is then adjusted, normally downward and by acid addition, to release at least some carbonate alkalinity as free carbon dioxide. Preferably, all non-hydroxide alkalinity is removed, or substantially so, by introducing the feedwater into a decarbonator. In some cases, the pH may be raised (without, or subsequent to decarbonation, depending upon water chemistry) preferably by caustic addition, to maintain silica solubility in the feedwater.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: May 11, 2004
    Assignee: Ionics, Inc.
    Inventor: William F. Heins
  • Patent number: 6699369
    Abstract: 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 into an evaporation chamber through which air, heated by waste heat, is blown. The micro-droplets undergo rapid evaporation in the chamber, resulting in the separation of the salt solids from the vapor phase of the water. The mixture of suspended solids and water vapor is filtered to remove and collect the salts, and the water vapor is condensed to collect the salt-free water.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: March 2, 2004
    Assignee: Aquasonics International
    Inventors: William Francis Hartman, Larry Joe Kepley, Jerry Van Fox
  • Patent number: 6649027
    Abstract: 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. A crystallizer subsystem is downstream of the processor, with the crystallizer subsystem crystallizing salt from the brine and recycling the brine to the mixer.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: November 18, 2003
    Assignee: Honeywell International Inc.
    Inventors: Allen Kent MacKnight, Alex M. Lubman
  • Patent number: 6582552
    Abstract: 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 separation tank. In the evaporator according to the invention, heat transfer surface contamination may be limited by mixing the liquid to be evaporated with the circulating fluid only after the heat exchanger so that the heat surface contaminating liquid to be evaporated does not make direct contact with the heat surface.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: June 24, 2003
    Assignee: Rinheat Oy
    Inventor: Pentti Juhola
  • Publication number: 20030094245
    Abstract: This invention provides a concentrator capable of drawing out a concentrate of a constant concentration.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 22, 2003
    Inventors: Kazuyuki Akita, Toshiharu Minoda
  • Patent number: 6551466
    Abstract: 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 recover energy from a concentrate and distillate generated. Further heating the feed stream in a second heating step in a heated separator generates a saturated vapor fraction and a concentrated liquid contaminant fraction. The vapor fraction may be compressed to generate a temperature differential in the reboiler exchanger with the vapor fraction being passed into contact with a reboiler exchanger to provide a stream of condensed vapor from the reboiler. The stream may be circulated through the reboiler exchanger and the heated separator to maintain from about 1% to about 50% by mass vapor in the stream.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: April 22, 2003
    Assignee: Aqua Pure Ventures Inc.
    Inventors: Steve Kresnyak, Edward Warchol, Robert Becker
  • Publication number: 20030047290
    Abstract: The invention relates to a method and installation for the dry fractionation of edible oils and fats and related products, said method comprising the steps of:
    Type: Application
    Filed: July 30, 2002
    Publication date: March 13, 2003
    Inventors: Marc Hendrix, Marc Kellens
  • Patent number: 6500216
    Abstract: 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 components by evaporating water components by atomizing sea water and blowing warm wind thereto. During this treatment, there are provided a method and an apparatus of arranging net or cloth at one stage or a plurality of stages in a midway of a flow of the evaporated water components and adhering the salt components on the net or the cloth when the evaporated water components pass through the net or the cloth.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: December 31, 2002
    Inventor: Masakatsu Takayasu
  • Publication number: 20020117268
    Abstract: A continuous vacuum pan includes a cylindrical housing having a vertical axis, at least one liquid heating pan within the housing, and a vertical tube, floating calandria within the liquid heating pan. The vertical tube floating calandria has a downcomer between its periphery and the periphery of the liquid heating pan, and a gap is provided between the bottom of the calandria and the bottom of the liquid heating pan. Radially extending baffles in the liquid heating pan define a plurality of compartments located in series with one another, the compartments ranging from a first upstream compartment to a downstream output compartment. Ports are provided in all of the baffles except in the baffle between the output compartment and the first compartment. The ports are spaced from the bottom of the liquid heating pan, permitting communication between the compartments.
    Type: Application
    Filed: January 10, 2002
    Publication date: August 29, 2002
    Inventors: Paul Martin Schorn, Leon Smith
  • Patent number: 6391361
    Abstract: 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 first feeding stream, (3) mixing the first feeding stream and second feeding stream to obtain a main stream, (4) heating the main stream in a heater, (5) transferring the heated main stream to a separator, (6) flash separating volatile components from the heated main stream and obtaining a main stream protein-containing concentrate, and subjecting at least a part of the main stream protein-containing concentrate to a drying step to obtain a powdery product. The amount of water to be evaporated in the drying step is significantly reduced, requiring smaller drying equipment, less air and less energy, and yields a powdery product having higher “bulk density”.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: May 21, 2002
    Assignee: APV Nordic Anhydro A/S
    Inventors: Lars Valentin Peters, Ole Teglhus Kragh
  • Patent number: 6335045
    Abstract: 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 temperature above the crystallization temperature of the liquid food product in a first heat exchanger; transferring the heated liquid food product to a first separator; flash separating volatile components from the heated liquid food product; and obtaining a liquid concentrate of the liquid food product.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: January 1, 2002
    Assignee: APV Anhydro A/S
    Inventors: Lars Valentin Peters, Ole Teglhus Kragh
  • Patent number: 6218592
    Abstract: 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 evaporator concentrates as Glauber's salt (Na2SO4.10 H2O) on an immersion cooler, (c) recrystallizing the Glauber's salt deposited on the immersion cooler, (d) optionally, repeating the recrystallization step (c) once or several times, (e) separating essentially inactive sodium sulfate from the process, and (f) recycling the depleted evaporator concentrates of step (a) to the evaporation system.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: April 17, 2001
    Assignee: Kernkraftwerke Gundremmingen Betriebsgesellschaft mbH
    Inventors: Manfred Lasch, Udo Krumpholz
  • Patent number: 6086722
    Abstract: 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 (NH.sub.4 Cl). The aqueous effluent is evaporated to produce a distillate water and a brine having an NH.sub.4 Cl concentration of about 10 to 60 weight percent. The brine can be further concentrated and ammonium chloride crystals are recovered. The distillate water is recycled to the gasification reaction. No effluent discharges to the environment.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: July 11, 2000
    Assignee: Texaco Inc.
    Inventors: George Henry Webster, Jr., Byron Von Klock, Dinh-Cuong Vuong, John Saunders Stevenson, Steven Robert Johnson
  • Patent number: 6027607
    Abstract: 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 waste heat from a recooling industrial plant. According to this process, climatic values and the degree of recooling are measured and evaluated in a control unit. At least part of the heated brine and some non-heated brine are sprayed by a spraying device of the evaporation basin. The amount of sprayed brine is regulated by the control unit depending on the measured data.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: February 22, 2000
    Assignee: Krebs & Co. AG
    Inventor: Vicente Gracia Corniel
  • Patent number: 6001246
    Abstract: 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 impurities and contaminants, including debris, oil/grease, heavy metal oxides, lead and other heavy metals, suspended solids, bacteria, organic compounds, and/or gases, from the wastewater to obtain a clean neutral sodium sulfate brine, subjecting the brine to heat to obtain distilled water and sodium sulfate salt, and purifying the distilled water by reverse osmosis for reuse as clear process water.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: December 14, 1999
    Inventor: Charles M. Suenkonis
  • Patent number: 5984981
    Abstract: 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 mixture (5), and precipitating the salt as a common salt (S) at the bottom of the vessel (1). The remainder of the mixture (5) is discharged through a filter (13) into a tank (17), where it is stored as a concentrated brine (15), which is then discharged through a filter layer (16) and a drain (18), and crude salt is dissolved therein to recycle as a crude salt-water mixture. The concentrated brine (15) may be used after being mixed with the extracts of aloe, mozuku (Nemacystis decipiens), rice bran, etc. The air may be blown into the mixture (5) under heating.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: November 16, 1999
    Assignee: Showa Miyagi
    Inventor: Showa Miyagi
  • Patent number: 5857269
    Abstract: A process for manufacturing improved granulated fatty alcohol sulfates. The process includes slowly drying and mechanically mixing the fatty alcohol sulfate.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: January 12, 1999
    Assignee: Zohar Detergent Factory
    Inventors: Oded Vashitz, Amatzia Galler
  • Patent number: 5575923
    Abstract: 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 for the brine/solids slurry from which solids are to be separated and dried, an inlet for air, an inlet for steam (the latter two inlets may be combined, where convenient), an inlet for solids free feed, and a drain outlet (these two may be combined where convenient into a combination feed/drain connection). Preferably, an automated system for introducing feed brine and for removing the solids product is provided. For safety, a pivotally attached lower door has a hydraulic failsafe closure mechanism and locking safety latches to prevent the door from inadvertently opening.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 19, 1996
    Assignee: Ionics, Incorporated
    Inventors: Robert L. Solomon, Ferris C. Standiford, Joseph Bostjancic, Dan Peterson, George R. Jones
  • Patent number: 5472622
    Abstract: 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 for the brine/solids slurry from which solids are to be separated and dried, an inlet for air, an inlet for steam (the latter two inlets may be combined, where convenient), an inlet for solids free feed, and a drain outlet (these two may be combined where convenient into a combination feed/drain connection). Preferably, an automated system for introducing feed brine and for removing the solids product is provided. For safety, a pivotally attached lower door has a hydraulic failsafe closure mechanism and locking safety latches to prevent the door from inadvertently opening.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: December 5, 1995
    Assignee: Ionics, Incorporated
    Inventors: Robert L. Solomon, Ferris C. Standiford, Joseph Bostjancic, Dan Peterson, George R. Jones
  • Patent number: 5423288
    Abstract: 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 preferably annular region of the vessel wall is constructed as a cooling surface. In the interior of the vessel there is arranged a scraping unit which comprises a motor-driven rotating shaft which extends axially through the vessel as far as a point just short of the vessel base. At its end towards the vessel base, the shaft is provided with at least one scraping arm which, starting from the lower end of the shaft close to the vessel base, extends first in the direction towards the vessel wall and thence substantially parallel to the annular cooling surface and axially parallel to the drive shaft.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: June 13, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Ricardo Schneeberger, Hans Horisberger, Rudolf Buttiker
  • Patent number: 5366716
    Abstract: 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 thermo-compressor evaporation technique. A lamella evaporator is utilized as the evaporator-crystallizer, the evaporator being divided into separate compartments for ease of cleaning the lamella surfaces. The recovered concentrated sulphur dioxide can be used wherever desired, for example for the production of chlorine dioxide.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: November 22, 1994
    Assignee: A. Ahlstrom Corporation
    Inventor: Esko Mattelmaki
  • Patent number: 5133807
    Abstract: 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 content of dry material and having a low supersaturation coefficient, and subjecting the massecuite to flash evaporation of a certain volume of water and a notable increase in the supersaturation, and subsequently effectuating crystallization of the massecuite produced in the first stage by cooling in a second stage.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: July 28, 1992
    Assignee: FCB
    Inventor: Jacques De Cremoux
  • Patent number: 5122233
    Abstract: 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 mixtures thereof from the vacuum evaporation device 4, a condenser 7 for condensing the humid vapors from the vacuum evaporation device 4 and a device 9 for reverse osmosis treatment of the condensate as well as suitable conveying devices between the parts of the apparatus.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: June 16, 1992
    Inventor: Charles Zampieri
  • Patent number: 5006204
    Abstract: 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 the fluid bed while permitting crystallization of the whey as it rests on the surface of the disc.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: April 9, 1991
    Assignee: A/S Niro Atomizer
    Inventor: Jens P. Jensen
  • Patent number: 4369091
    Abstract: A spray drying apparatus with a drying chamber (10) in which a liquid product is atomized by means of an atomizing wheel (11) and dried by means of warm drying gas or flue gas introduced through a tube (14) which is directed towards the bottom side of the atomizing wheel. In order to avoid adherence of particulate material present within the drying chamber (10) to the bottom side of the atomizing wheel (11) clearing or obstructing gas, preferably atmospheric air, is blown upwardly towards the bottom side of the atomizing wheel from a clearing gas inlet (18).
    Type: Grant
    Filed: January 22, 1981
    Date of Patent: January 18, 1983
    Assignee: A/S Niro Atomizer
    Inventor: Peter E. Solver
  • Patent number: 4352717
    Abstract: 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 temperature atmosphere of between 700.degree.-1500.degree. C. to allow the combustion of sprayed alcohol therein, thereby instantaneously producing spherical grain-ferrite powder. A hot air guide is provided along the inner surface of the wall of the vertical vessel extending upward in a spiral for providing a hot air current rising spirally upwardly within the vessel to provide a high temperature atmosphere above the spray nozzle.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: October 5, 1982
    Assignee: Dowa Mining Co., Ltd.
    Inventors: Yasuo Watanabe, Seizi Isoyama, Yoshikazu Yamamichi
  • Patent number: 4318772
    Abstract: 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 crystal growth and separating the crystallized solids. The invention also involves the apparatus for carrying out the process including a continuous process circuit for circulating a super-saturated liquor, which circuit comprises a source of heat energy for propelling the process and a cooling tower to provide evaporation and super-saturation, and further including a separator to remove crystallized solids from the liquor.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: March 9, 1982
    Inventor: Loren G. Kragh
  • Patent number: 4288285
    Abstract: 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 through the annular passageway between the walls. The wall structures form a settling trough into which solid materials may settle and accumulate.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: September 8, 1981
    Assignee: Evaporator Technology Corporation
    Inventor: James E. Houston
  • Patent number: 4278494
    Abstract: 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 evaporation vessel, a pipe for withdrawing flue gases and vapors from the evaporation vessel, and an immersion pipe extending vertically inside the evaporation vessel, the upper end of the immersion pipe being connected, by means of an angle joint piece to the outlet of the combustion chamber, there being at the opposite end of the combustion chamber, a burner for liquid or gaseous fuel, the burner having a cylindrical combustion gas turbulence chamber for an oxygen-bearing combustion gas, at one end of which there is a substantially tangential combustion gas inlet conduit and a fuel dispersion pipe extending coaxially into the turbulence chamber, the opposite end of the turbulence chamber being convergent.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: July 14, 1981
    Assignee: Outokumpu Oy
    Inventors: Launo L. Lilja, Valto J. Makitalo, Timo T. Koivunen
  • Patent number: 4276117
    Abstract: 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 thereafter cooling the brine in multiple stage crystallizers operated at progressively lower temperatures, thereby precipitating potassium chloride crystals. The improvement comprises cooling the brine in hotter crystallizer utilizing streams to or between cooler evaporators whereby in addition heat is provided to the evaporator stream.
    Type: Grant
    Filed: May 22, 1980
    Date of Patent: June 30, 1981
    Assignee: PPG Industries Canada Ltd.
    Inventor: Donald H. Geesen