Level Control Patents (Class 202/181)
  • Patent number: 11624512
    Abstract: A tankless water heater includes a scale control module (SCM). The SCM is mounted inside or outside of a cabinet which encloses a heat exchanger and source of heat of the water heater. The SCM may include a connector and a cartridge removably attaching to the connector or may only include a cartridge permanently affixed to the tankless water heater. The tankless water heater includes a continuous water pathway inside the cabinet to supply water to all components of the tankless water heater, including the SCM. The tankless water heater receives supply water at its inlet, treats the supply water in the SCM to generate treated water having reduced scale-forming characteristics compared to the supply water, and heats the treated water in the heat exchanger to generate heated treated water.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: April 11, 2023
    Assignee: A.O. Smith Corporation
    Inventors: Jeffrey T. Ogan, Jason F. Janz, Crawford G. Arrington
  • Publication number: 20150075965
    Abstract: A water amount controlling method according to the present disclosure includes: opening a discharge valve that discharges a liquid from a water tank if an impurity concentration is higher than or equal to a first reference value, and opening a sluice gate that introduces the liquid to the water tank a predetermined period after opening the discharge valve, the first reference value being lower than a saturation concentration; throttling the discharge valve and the sluice gate if the impurity concentration is higher than or equal to a second reference value and the temperature is lower than or equal to a third reference value, the second reference value being lower than the first reference value; and closing the discharge valve if the impurity concentration is lower than the second reference value, and closing the sluice gate a predetermined period after closing the discharge valve.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 19, 2015
    Inventors: Morio TOMIYAMA, Hisaaki GYOTEN, Norihisa MINO, Akira TAOMOTO, Atsushi ONO, Stephen William JOHN
  • Publication number: 20150014146
    Abstract: A desalination system includes a water tank, a water-repellent particle layer located at a lower portion of the tank and composed of water-repellent particles, and a devolatilizing layer located below the water-repellent particle layer. Liquid is introduced to the tank, the introduced liquid is heated to be evaporated into water vapor, and the water vapor passes through the water-repellent particle layer and is liquefied at the devolatilizing layer, so that fresh water is obtained from the liquid. The desalination system further includes a liquid level controller for determining a level of the liquid introduced to the tank in accordance with information on relationship between information corresponding to an amount of the liquid introduced to the tank and a surface level of the liquid in the tank, and an introduced amount controller for adjusting the amount of the liquid introduced to the tank in accordance with the determined liquid surface level.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventors: Yumi WAKITA, Norihisa MINO, Hiroki TAKEUCHI, Mikiya NAKATA
  • Publication number: 20150014145
    Abstract: In a desalination system, a water-repellent particle layer is provided at a lower portion of a water tank and composed of water-repellent particles. A devolatilizing layer is provided below the layer. Liquid is provided in the tank and is heated for evaporation, and obtained vapor passes through the particle layer and is liquefied at the devolatilizing layer, so that freshwater is obtained from the liquid. The particle layer includes a first and a second particle layers composed of discriminable first and second particles. A particle measuring unit measures an amount of the second water-repellent particles. A decision unit decides whether or not the measured amount of the second water-repellent particles is equal to or more than a predetermined value. A controller alerts when the decision unit decides that the amount of the second particles is equal to or more than the predetermined value.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventors: Yumi WAKITA, Norihisa MINO, Hiroki TAKEUCHI, Mikiya NAKATA
  • Patent number: 8828192
    Abstract: Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In an embodiment of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product, and an electric motor with motor rotor and magnets hermetically sealed within the fluid pressure boundary of the distillation system.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: September 9, 2014
    Assignee: DEKA Products Limited Partnership
    Inventors: Jason A. Demers, Scott A. Leonard, Kingston Owens
  • Patent number: 8715467
    Abstract: This invention provides a method for purifying a chlorine supply that includes a chlorine component, a bromine component, and nitrogen trichloride. The method includes the steps of introducing the chlorine supply into a vaporizer, heating the chlorine supply in the vaporizer to form a vapor, and introducing the vapor into a distillation system to provide purified chlorine gas, a distillate that includes liquid chlorine and the bromine component, and a bottoms component including the nitrogen trichloride. The method also includes the steps of condensing the vapor in a reflux condenser, heating the condensate in a reboiler, removing the purified chlorine gas from the distillation system, and removing the distillate from the distillation system.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: May 6, 2014
    Assignee: BASF SE
    Inventors: Robert A. Doerr, Steven D. Gagnon, Kenneth K. Bordelon, Johannes D. Jacobs, Thomas A. Grzanka
  • Patent number: 8623179
    Abstract: A seawater desalinization device includes a container portion, a guiding pipe, a plug, a heat conduction cover, a switch, and a connecting pipe. The container portion defines a receiving chamber, a slot, and a through hole communicating with the receiving chamber. The guiding pipe is fixed on the container portion to communicating with the slot. The plug is detachably inserted into the guiding pipe. The heat conduction cover covers on the container portion and sealing the receiving chamber and the slot. The switch is assembled in the container portion to control open or close the through hole upon a seawater level in the container portion. The connecting pipe is inserted into the through hole and a seawater source.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: January 7, 2014
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
    Inventors: Zheng Shi, Jiang-Feng Liu
  • Publication number: 20130240345
    Abstract: A process for producing high-purity liquids, in particular liquid chemicals, by distillation, includes the steps of: providing a liquid to be purified from a storage vessel in a sample container arranged in a sample chamber, heating and evaporating the uppermost layers of the liquid to be purified, condensing the sample vapor produced of the liquid to be purified in a condensation device outside the sample chamber, and collecting the distillate in a collecting container. The collecting container being connectable to the storage vessel via a return line for the non-condensed sample vapor and forming a space that is closed off from the surroundings between the space above the liquid surface of the liquid to be purified in the sample chamber and the storage vessel.
    Type: Application
    Filed: May 2, 2013
    Publication date: September 19, 2013
    Inventor: Werner LAUTENSCHLAEGER
  • Patent number: 8506762
    Abstract: Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 13, 2013
    Assignee: DEKA Products Limited Partnership
    Inventors: David F. Bednarek, Jason A. Demers, Timothy P. Duggan, James L. Jackson, Scott A. Leonard, David W. McGill, Kingston Owens
  • Patent number: 8470138
    Abstract: A distillation assembly that reduces malodors resulting from a process of recycling a solvent from a contaminated solvent solution that includes a distillation chamber defined by a top wall, a side wall and a bottom wall, a heating element disposed in the distillation chamber including an active portion and an inactive portion. The contaminated solvent solution disposed at a level within the distillation chamber such that the active portion always disposed below the level.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: June 25, 2013
    Assignee: Safety-Kleen Systems, Inc.
    Inventors: Rudy Publ, David Kisela, Gary Myers
  • Patent number: 8470137
    Abstract: An assembly for recycling a solvent from a contaminated solvent solution includes a reservoir module connected to a recycler module. The reservoir module includes a mounted reservoir including an interior volume and a removable lid that reduces the interior volume and includes an access port. The recycler module includes a distillation assembly and an air handler assembly. The distillation assembly includes a distiller and a conduit including a condenser and a sight glass. The air handler assembly includes a duct having an intake port, an exhaust port and a source of air flow. The condenser is disposed within the duct and the sight glass is disposed external to the duct.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: June 25, 2013
    Assignee: Safety-Kleen Systems, Inc.
    Inventors: Rudy Publ, David Kisela, Tim Rothwell, Greg Merz, Gary Myers
  • Patent number: 8394241
    Abstract: A distillation-type drinking fountain includes a liquid providing unit having a liquid entry; a heat-exchanging tube having a liquid-incoming end, a liquid-outgoing end and a heat-exchanging room; a hot water tank having a body and a heating unit. The body has a heating room communicating with the liquid-outgoing end. A steam pipe has a first end and a second end, with the first end communicating with the heating room. A condensing unit has a condenser tube having one end communicating with the second end. A water-collecting container has a water-storing room communicating with another end of the condenser tube. An energy-saving heating unit includes an energy-saving heat-exchanging tube and a heating device. The energy-saving heat-exchanging tube includes a water-incoming end, a water-outgoing end and an energy-saving heat-exchanging room. An outlet valve communicates with the water-outgoing end.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: March 12, 2013
    Assignee: Shanghai Ariba Electric Co., Ltd.
    Inventor: Long-Ming Wang
  • Patent number: 8357284
    Abstract: A metal film-forming method is capable of forming a metal film on a surface of a base metal film, formed on a surface of a substrate, with sufficient adhesion to the base metal film even when a natural oxide film is formed on the surface of the base metal film. The metal film-forming method includes: preparing a substrate having a base metal film formed on a surface; and carrying out electroplating of the substrate using the base metal film as a cathode and another metal as an anode while immersing the substrate in a solution containing a metal complex and a reducing material, both dissolved in a solvent, to form a metal film, deriving from a metal contained in the metal complex, on the surface of the base metal film.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: January 22, 2013
    Assignee: Ebara Corporation
    Inventors: Akira Susaki, Tsutomu Nakada, Hideki Tateishi
  • Patent number: 8268132
    Abstract: A distillation drinking fountain includes a liquid providing unit having a liquid entry; a heat-exchanging tube having liquid incoming and liquid outgoing ends and a heat-exchanging room, wherein the liquid providing unit connects to the liquid incoming end and communicates with the heat-exchanging room; a hot water tank having a body and a heating unit, wherein the body has a heating room connecting to the liquid outgoing end and communicating with the heat-exchanging room; a steam pipe having first and second ends, wherein the first end communicates with the heating room, and a part of the steam pipe is received in the heat-exchanging room; a condensing unit having a condenser tube, wherein the condenser tube has one end communicating with the second end; a water-collecting unit having a water-storing room connecting to another end of the condenser tube; and an outlet valve communicating with the water-storing room.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: September 18, 2012
    Inventor: Long-Ming Wang
  • Patent number: 8206558
    Abstract: A processing apparatus (1) for the processing of process or industrial wastewaters is provided. The processing apparatus (1) has an evaporator (4) in which a tube bundle heat exchanger is provided, whose pure distillate side is connected to a separating apparatus for separating the distillate from floating organic phase or similar free liquid constituents. This separating apparatus is intended to collect the floating organic phase from the condensate, in order that this phase can be sucked back into the evaporator (4). In addition, the vapor mixture is conducted from the separating apparatus (8) to a recuperator (3) and cooled to such an extent that the water, the volatile solvents and the organic material dissolved in the vapor can be condensed and discharged separately or can be sucked back into the evaporator (4). This allows significantly better distillate qualities to be achieved.
    Type: Grant
    Filed: February 3, 2007
    Date of Patent: June 26, 2012
    Assignee: H20 GmbH
    Inventors: Matthias Fickenscher, Daniel Ladenberger
  • Publication number: 20110017583
    Abstract: A method and apparatus for eliminating brine effluent from desalination plants by distillation, is disclosed. To eliminate the brine the salt is converted into a solid and all of the water in the brine is converted to distilled water. The key to achieving this is reducing or eliminating the scale formation in the heating chamber. In one embodiment the process can be used to reduce or eliminate scale formation in a vapor compression sea water desalinization system and there-by use this system to produce drinking water. This process requires no chemical additives but relies entirely upon separation of the process of vaporization of the fluid involved, from the process of heating of the fluid. In one embodiment of this apparatus sea water can be desalinated and the resulting products can be dry salt and pure water leaving no brine return to the ocean.
    Type: Application
    Filed: July 26, 2009
    Publication date: January 27, 2011
    Inventor: Michael John Lord
  • Patent number: 7857945
    Abstract: A solar still includes a relatively shallow chamber with a pyramid shaped transparent cover and a transparent base. The still also includes a pair of rollers and an endless heat absorbing belt rotatable about the rollers. The still is positioned to receive solar energy passing through the transparent cover and impinging on an upper surface of the heat absorbing belt in order to vaporize seawater within the chamber. The efficiency of the still is increased by one or more mirrors disposed below the still for reflecting sun light up through the transparent base to impinge on a lower outer surface of the belt to enhance the vaporization of the seawater. One or more fans are also provided for cooling the cover to enhance the condensation of water that will then run down the cover and into a pure water receptacle.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: December 28, 2010
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Ahmed Al-Garni, Ayman Kassem, Farooq Saeed
  • Patent number: 7770511
    Abstract: The invention relates to a device and method for preparing liquid from solid materials such as medicinal materials. It includes liquid and materials for preparing the liquid at the beginning and the end of the process. The device uses a steam generator, an intermediate switch valve and a material chamber, which are connected sequentially with pipes, and further includes an outlet pipe, which is at the bottom of the material chamber. The method involves the steps of: distillation and absorption; immersion; and repetition. The device and method for preparing liquid alternates the distillation and immersion steps, which reduces harmful substance in the prepared liquid that would otherwise occur by conventional methods. The method not only extracts soluble effective matter, but also reduces loss of volatile effective matter. Ultimately, the method makes the steps for preparing liquid simple and clear, and it can prepare liquid quantitatively, effectively and without pasty and shrinkable characteristics.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: August 10, 2010
    Assignee: Shenzhen Zofu Technology Co., Ltd.
    Inventor: Linlin Yao
  • Patent number: 7641771
    Abstract: A system for generating purified water from polluted water which includes an entry chamber communicating with a source of polluted water, a pump for delivering water vapor from the entry chamber to the vapor chamber, and a passageway for delivering condensed water from the vapor chamber to a reservoir of purified water.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: January 5, 2010
    Inventors: Joel Vance Miller, Robert Samuel Smith
  • Patent number: 7597784
    Abstract: Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: October 6, 2009
    Assignee: DEKA Products Limited Partnership
    Inventors: David F. Bednarek, Jason A. Demers, Timothy P. Duggan, James L. Jackson, Scott A. Leonard, David W. McGill, Kingston Owens
  • Patent number: 7531065
    Abstract: A fluid distillation apparatus includes at least one each of a fluid inlet port Through which the fluid to be distilled is transferred from a container containing the fluid to be distilled to distillation chamber, a fluid outlet port through which the distilled fluid is transferred to a container to hold the distilled fluid, an air supply port to which compressed air supply is to be connected, a power cord through which the electric power is supplied, preferably an outlet through which air pressure for fluid agitation is supplied to said container containing the fluid to be distilled, and preferably art outlet through which air pressure is supplied to a pump means for transferring the distilled fluid from the receiving container to the duty fluid container. The apparatus includes a debris draining system for automatically draining debris from said distillation tank.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: May 12, 2009
    Assignee: Uni-Ram Corporation
    Inventor: Soichiro Yamamoto
  • Patent number: 7504005
    Abstract: A condensing chamber and a heating chamber are arranged in an enclosure. Liquid is fed into the condensing chamber where it is pre-heated. The pre-heated liquid flows to the heating chamber where it is boiled to produce vapor. Gas sparging in the condensing chamber enhances heat transfer and absorbs additional vapor generated by pre-heating. The condenser is a helical or other horizontal tube heat exchanger.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: March 17, 2009
    Inventors: Naisin Lee, Stephen F. Sporer
  • Patent number: 7488421
    Abstract: Water processing method, in particular for producing fresh water from salt water by membrane distillation. In comparison with previously known methods, a significant reduction in investment cost and operating cost can be achieved by the combination of the following measures: The water to be processed is kept in a supply chamber the wall of which is formed at least in part by a hydrophobic membrane being permeable for water vapor. A hydrophilic membrane having a greater thickness in comparison with the hydrophobic membrane and a lower thermal conductivity per unit area runs in parallel with the hydrophobic membrane. By the pumping action a vapor pressure difference is produced between the water to be processed and the fresh water so that the membrane distillation is driven by the vapor pressure difference resulting from the pumping action, the water condensing in the pores of the hydrophilic membrane.
    Type: Grant
    Filed: April 24, 2004
    Date of Patent: February 10, 2009
    Assignee: Clean Water Gesellschaft Fuer Wasseraufbereitungstechnik mbH
    Inventors: Guenther Hambitzer, Heide Biollaz, Markus Borck, Christiane Ripp
  • Patent number: 7432482
    Abstract: A microwave energy emitter (108) is positioned in a chamber within a material holding cavity of a containment vessel (106) that is transparent to microwave energy absorption that is further surrounded by a microwave reflective component to reflect the waves back into the vessel. The vessel (106) encloses a material that absorbs microwave energy through molecular vibration of its molecules. An inlet path (116) and outlet path (112) is provided for the material to flow in and out of the vessel upon predetermined conditions. Heated material can be condensed via a condenser (124) into a collection vessel (120). A controller (126) is provided to send control signals to switching device for controlling the material flow and receiving sensing signals for decision generation.
    Type: Grant
    Filed: February 5, 2005
    Date of Patent: October 7, 2008
    Inventor: Steven R. Sedlmayr
  • Patent number: 7258765
    Abstract: Vaporization chambers (distillation “pots”) are disclosed in which the liquid contained in such a pot is heated and circulated to establish thermal uniformity of the liquid and to route the circulated liquid past a thermally conductive member that contacts the liquid. The thermally conductive member extends from a location on a wall of the pot in a portion of the pot that holds the liquid as the liquid is being heated in the pot and conducts thermal energy directly from the liquid to a location outside the pot corresponding to the location on the wall. The pot desirably is divided into an upper portion and lower portion, wherein the liquid circulates from the lower portion to the upper portion and from the upper portion to the lower portion during heating. During this circulation, bubbles formed in the liquid can be routed into the upper portion in a manner resulting in fracture of the bubbles and recovery of liquid entrained in the bubbles, thereby preventing foam accumulation in the pot.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: August 21, 2007
    Assignee: Drawform, Inc.
    Inventor: Robert D. Westcott
  • Patent number: 7232504
    Abstract: A distilling apparatus and method use a two step distillation and purification process for processing a waste liquid, such as an impure sulfuric acid solution, to form a highly concentrated sulfuric acid solution. First, the waste liquid is stored in a concentrating column, where it is heated. A condenser, which uses the waste liquid as a cooling medium, condenses the vapor generated by the heater. The condensed vapor is passed through a filter, which separates impurities out of the waste liquid, prior to feeding the waste liquid back into the concentrating column. Water is then removed from the waste liquid via a distilling process. The resulting concentrated liquid is then fed to a purifying column, where it is again heated, to remove residue, and condensed, resulting in a highly pure waste liquid.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: June 19, 2007
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Osuda, Toru Matoba, Daisuke Adachi, Masataka Fukuizumi
  • Patent number: 7119312
    Abstract: A microwave energy emitter (108) is positioned in a microwave transparent chamber (123) within a fluid holding vessel (106) of a microwave containment vessel (122). The fluid holding vessel (106) may be transparent to microwave energy and is further provided with a microwave reflective component outward, on, or beyond an exterior surface (121) of the wall of the fluid holding vessel (106). The microwave reflective component reflects microwaves back into the fluid holding vessel (106). The fluid holding vessel (106) encloses a material that absorbs microwave energy. An inlet path (116) and outlet path (112) is provided for material to flow in and out of the holding vessel upon predetermined conditions. Heated material can be condensed via a condenser (124) into a collection vessel (120). A controller (126) is provided to send control signals to a switching device (100) for controlling the material flow and receiving sensing signals for decision generation.
    Type: Grant
    Filed: February 5, 2005
    Date of Patent: October 10, 2006
    Inventor: Steven R. Sedlmayr
  • Patent number: 7052582
    Abstract: A wave powered evaporation desalination system for removing fresh water from salt water by extraction of water vapor from a negative pressure container using wave motion for power. The wave powered evaporation desalination system includes a first vessel that accepts salt water. The salt water is forced from the first vessel through a atomizing spray nozzle into the top of a negative pressure second vessel. The negative pressure second vessel includes a number of trays that fill up with salt water films. Two pumps are attached to the top of the second vessel. One pump draws brine from the bottom of the second vessel for dispersion outside the system. The other pump draws off the water vapor from the second vessel into a hose and back to normal atmospheric pressure. The two pumps are powered by a float hinged to the second vessel.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: May 30, 2006
    Inventor: Yousry E. Madkour
  • Patent number: 6846388
    Abstract: A method and an apparatus for heating fluid with a gas heater and distilling fluid with the pilot light of the gas heater are disclosed. The apparatus for heating fluid and distilling fluid includes a main tank for containing fluid to be heated, a heater, adapted to have a pilot light, for heating the fluid in said main tank and an evaporator tank for vaporizing fluid received therein with heat from the pilot light. The method of heating fluid and distilling fluid includes heating a first volume of fluid with a heater having a pilot light and heating a second volume of fluid with the pilot light.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: January 25, 2005
    Inventor: Freeman Wilks
  • Patent number: 6830661
    Abstract: A compact, energy efficient, continuous-flow point of use distillation system utilizes stacked, vertically-arranged components to provide a compact and energy efficient distillation process and a device which is quick and easy to service and maintain. A housing contains a double-walled boiler vessel to which water is supplied from an external source through suitable filters. A heating source is provided to boil water in the vessel, producing steam which is supplied through a condenser to a storage container located below the boiler. A noninvasive liquid level sensor maintains the water level in the boiler and the controller is provided to activate the boiler when water is required for the storage reservoir.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: December 14, 2004
    Assignee: Environmental Technology Enterprises, L.L.C.
    Inventor: Glenn E. Land
  • Patent number: 6632329
    Abstract: A distillation apparatus is provided with a distillation tower, a reboiler, a bottom outflow pipe for drawing a liquid from the bottom of the distillation tower, and a pot provided between the bottom of the distillation tower and the bottom outflow pipe. A part of the drawn liquid is discharged to the outside of the distillation apparatus while the rest is flowed to the reboiler. The pot has a cross-sectional area smaller than a cross-sectional area of the distillation tower and larger than a cross-sectional area of the bottom outflow pipe.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: October 14, 2003
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Noriaki Mizutani, Yukihiro Matsumoto, Kazuhiko Sakamoto, Kenji Sanada
  • Patent number: 6582563
    Abstract: An improved portable water purification system with reduced leaks and the capability of automatic draining of its boiling tank, as well as to a method of preventing water spillage from a portable water purification system and a method of draining a boiling tank of a portable water purification system. The system includes a control tank that is connected to a water supply, a boiling tank that is connected to the control tank for boiling water, a condenser that is connected to the boiling tank for receiving steam from the boiling tank and for condensing the steam to form distilled water, and a distilled water tank that is connected to the condenser for collecting distilled water from the condenser. An inlet solenoid control valve is disposed between the water supply and the control tank, with the inlet solenoid control valve controlling flow of water to the control tank. The system further includes a UV light sanitizer, leak prevention and leak detection features, and a mechanism for detecting water quality.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: June 24, 2003
    Assignee: innowave, inc.
    Inventors: Tyler L. Adam, Robert W. Haney
  • Publication number: 20030079981
    Abstract: A distilling apparatus and method use a two step distillation and purification process for processing a waste liquid, such as an impure sulfuric acid solution, to form a highly concentrated sulfuric acid solution. First, the waste liquid is stored in a concentrating column, where it is heated. A condenser, which uses the waste liquid as a cooling medium, condenses the vapor generated by the heater. The condensed vapor is passed through a filter, which separates impurities out of the waste liquid, prior to feeding the waste liquid back into the concentrating column. Water is then removed from the waste liquid via a distilling process. The resulting concentrated liquid is then fed to a purifying column, where it is again heated, to remove residue, and condensed, resulting in a highly pure waste liquid.
    Type: Application
    Filed: November 22, 2002
    Publication date: May 1, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Hiroshi Osuda, Toru Matoba, Daisuke Adachi, Masataka Fukuizumi
  • Patent number: 6551465
    Abstract: The operation of the dividing wall section of a dividing wall column is controlled by a control apparatus comprising a ratio controller which divides the liquid flowing into the dividing wall section. The rate of return of overhead liquid to the column is set by monitoring the temperature in the top of the product dividing wall section and the sidecut product draw rate is set by monitoring a temperature in the bottom of the product dividing wall section.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: April 22, 2003
    Assignee: UOP LLC
    Inventors: Charles P. Van Zile, James W. Harris
  • Patent number: 6451173
    Abstract: An improved apparatus useful in a process for separating a liquid stream (which can be an HF catalyst mixture) having a first liquid component (which can be HF), a second liquid component (which can be light ASO) and a third liquid component (which can be heavy ASO) is disclosed. The apparatus includes a closed vessel including an upper portion, a lower portion, and an intermediate portion, and above a bottom tray contained therein having a downcomer extending downwardly therefrom. The apparatus also includes a conduit located within the downcomer and opening below the level of the bottom tray.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: September 17, 2002
    Assignee: Phillips Petroleum Company
    Inventors: Keith W. Hovis, Richard L. Anderson
  • Patent number: 6406597
    Abstract: A distilling device for converting unprocessed water into pure water including a fill tank, a base having a removable water tray with a boiling chamber therein for holding the unprocessed water, a removable mist chamber disposed above the base and having a heater depending therefrom into the boiling chamber to boil the unprocessed water and to convert it into a purified steam which rises into a condensation coil where a fan cools the coil and steam, causing the steam to condense into purified water and flow into a reservoir tank which also functions as a serving pitcher.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: June 18, 2002
    Inventor: Chi-Hsiang Wang
  • Patent number: 6402897
    Abstract: 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 distillation unit portion and the storage tank allow heat from the distillation unit to be recovered in the hot distilled liquid in the tank to be transferred back to the feed water and/or to help maintain the hot distilled liquid in the tank at an appropriate elevated temperature. A start-up chamber in the distillation unit stores a reservoir of feed liquid during periods of inactivity, and allows the hot distilled liquid in the tank to preheat this feed liquid so that the feed liquid boils more quickly upon start-up.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: June 11, 2002
    Inventor: Charles L. Gunn
  • Publication number: 20020043453
    Abstract: A distilling device for converting unprocessed water into pure water comprising a fill tank, a base having a removable water tray with a boiling chamber therein for holding the unprocessed water, a removable mist chamber disposed above the base and having a heater depending therefrom into the boiling chamber to boil the unprocessed water and to convert it into a purified steam which rises into a condensation coil where a fan cools the coil and steam, causing the steam to condense into purified water and flow into a reservoir tank which also functions as a serving pitcher.
    Type: Application
    Filed: June 21, 2001
    Publication date: April 18, 2002
    Inventor: Chi-Hsiang Wang
  • Patent number: 6365005
    Abstract: 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 mixing within the primary heat exchanger. The increased level of turbulence and mixing dramatically reduces fouling inside the primary heat exchanger and increases the heat transfer efficiency. The improvements in the distiller are maximized by recirculating the liquid to be evaporated at a high multiple of the flow rate of the liquid feed to the distiller. The distiller may also include a feed circulation loop with a secondary heat exchanger to increase the efficiency of heat-of-evaporation recovery in the evaporation/condensation cycle. Applications of the vapor compression distiller include purification of waste liquids, concentration of dilute liquid mixtures, and separation of liquid/liquid, liquid/gas, and liquid/solid mixtures.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: April 2, 2002
    Inventor: James W. Schleiffarth
  • Patent number: 6325898
    Abstract: A device allows for continuous regulation of the composition of a fluid mixture that includes at least two components of different polarities. The device is designed, for example, to be inserted in a separation system that the device supplies with a carrier fluid of stabilized composition. The device includes a storage tank (3) receiving a mixture coming from the separation system and at least one auxiliary vessel (6) containing one of the components of the mixture. To control the transfer of this component from auxiliary vessel (6) to storage tank (3), the device further includes at least one tubular capacitive sonde (CS) totally immersed in the fluid mixture, a sonde (TS) for measuring the temperature of the mixture, and a sonde (LS) for measuring the mixture level in storage tank (3).
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: December 4, 2001
    Assignees: Institut Francais du Petrole, NOVASEP
    Inventors: Jean Blehaut, Roger-Marc Nicoud
  • Publication number: 20010037937
    Abstract: For a process for producing high-purity liquids, particularly liquid chemicals, by distillation it is proposed that the liquid to be purified (1) is heated by microwave radiation (5) preferably in the uppermost layers.
    Type: Application
    Filed: September 23, 1997
    Publication date: November 8, 2001
    Inventor: WERNER LAUTENSCHLAGER
  • Patent number: 6303006
    Abstract: A vacuum type distilling system includes a sealed container including a vaporization chamber for containing a liquid and a condensation chamber, a pressure-reducing device, a condensing device, a heating device, and a vapor-collecting device including a floating piston for separating liquid and vapor and a guide tube for guiding vapor generated in the vaporization chamber into the condensation chamber. Liquid to be distilled is filled into the vaporization chamber and the pressure of the sealed container is reduced such that the boiling point of the liquid in the vaporization chamber is lowered. The heating device heats and thus vaporizes the liquid in the vaporization chamber into vapor which is immediately conveyed into the condensation chamber where vapor is condensed into distilled liquid by a condensing tube of the condensing device that is mounted in the condensation chamber.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: October 16, 2001
    Inventors: Chia-Wei Chang, Charlie S. F. Chang, Shen Tsung-Lin
  • Patent number: 6303005
    Abstract: For a process for producing high-purity liquids, particularly liquid chemicals, by distillation it is proposed that the liquid to be purified (1) is heated by microwave radiation (5) preferably in the uppermost layers. To implement this process a device with a liquid container (3), with a heat source (5) acting on the liquid container and with a condensation device (8, 9) connected to the liquid container is proposed, which is distinguished in that the heat source (5) in the form of a microwave radiation source is arranged above the liquid to be purified (1) in such a way that preferably the uppermost layers of the liquid (1) are heated.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: October 16, 2001
    Assignee: Mikrowellen-Systeme MWS GmbH
    Inventor: Werner Lautenschlager
  • Patent number: 6290819
    Abstract: A continuous-flow water distiller includes a housing having a removable heating vessel which receives water to be distilled A heater is immersed within the water in the vessel for producing steam. The housing includes an openable lid which, when closed, seals the heating vessel so that steam can be directed through an outlet into a condenser located in the housing. Raw water is supplied to the heating vessel through a heat exchanger to preheat the raw water by effectively utilizing thermal energy recovery to initiate cooling of the steam, and distillate is supplied through the condenser to enhance heat exchange.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: September 18, 2001
    Assignee: Environmental Technology Enterprises, LLC
    Inventor: Glenn E. Land
  • Patent number: 6274004
    Abstract: A water purification and/or desalination plant for producing drinking water from a polluted water source or sea water with the aid of sunlight, which plant includes an evaporator (1) having a roof part (2) made of a light-penetrable material, and an underlying basin part (3) containing the water that is to be purified, which basin part (3) includes channels (17) for collecting water vapor that has been condensed on the inside of the roof part (2), and a reservoir (10) for purified water. The plant also includes a device for removing moist air or vapor from the evaporator and a device for condensation of the moist air or vapor outside the evaporator.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: August 14, 2001
    Assignee: Pure Water Tech Ltd. AS
    Inventor: Peter Andersen
  • Publication number: 20010010286
    Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa0.5.
    Type: Application
    Filed: January 24, 2001
    Publication date: August 2, 2001
    Inventors: Karl-Heinz Wostbrock, Gerd Kaibel, Christian Tragut, Gabriele Anken
  • Patent number: 6200428
    Abstract: Wastewater treatment apparatus having a fluid receiving vessel for collecting and heating wastewater to a temperature below boiling, a superheated vaporizing chamber and at least one spray head to spray wastewater into the vaporizing chamber for conversion of the wastewater to vapor to be withdrawn from the apparatus, with the contaminants in the wastewater collected in the apparatus for separate removal.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: March 13, 2001
    Inventor: Raymond E. VanKouwenberg
  • Patent number: 6117275
    Abstract: Process and apparatus for regenerating a contaminated solvent wherein said solvent is first separated from higher-boiling contaminants in an evaporator, and then contaminants having a lower boiling point than said solvent are separated out in a condenser in which the temperature of said lower-boiling contaminants coming out of said condenser and the temperature of said solvent coming out of said condenser are separately controlled.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: September 12, 2000
    Assignee: Didda Maria Janina Baumann
    Inventor: Walter Baumann
  • Patent number: 6113744
    Abstract: A water distillation apparatus includes a degasification chamber having a top and a bottom. A liquid inlet is positioned adjacent to the bottom. A gas outlet is positioned adjacent to the top. A liquid outlet is positioned intermediate the top and the bottom. A float/valve assembly is provided for controlling the level of liquid within the chamber. A boiling chamber is provided having a top and a bottom. A liquid inlet is positioned intermediate the top and the bottom connected by a first transfer conduit to the liquid outlet of the degasification chamber. A steam outlet is positioned adjacent the top. A heating element is disposed within the boiling chamber whereby liquids within the boiling chamber are heated to the boiling point with the resulting steam passing out through the steam outlet. A condensation chamber is provided having a steam inlet and a liquid outlet. The steam inlet is connected by a second transfer conduit to the steam outlet of the boiling chamber.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: September 5, 2000
    Inventor: James Munro
  • Patent number: 6080280
    Abstract: Contaminated glycol in a natural gas dehydration plant is refined by vacuum distillation. The equipment to perform the refining by vacuum distillation is mounted upon a trailer. The equipment on the trailer is connected by an inlet line to the dehydration plant to receive the contaminated glycol from the plant. The refined glycol is continuously pumped back to the dehydration plant by a conduit. Detergents may be added to the glycol unit so that the circulating glycol cleans the equipment of the dehydration plant as the hazardous materials is separated from the glycol. The dehydration plant remains in operation during the time that the glycol is refined and the dehydration plant equipment cleaned. When the process is complete at one dehydration plant the trailer is towed to another dehydration plant for refining the glycol and cleaning the dehydration plant.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: June 27, 2000
    Inventor: John W. Moore, Jr.