GB694918A - Diffusion of gases in liquids - Google Patents

Diffusion of gases in liquids

Info

Publication number
GB694918A
GB694918A GB1394451A GB1394451A GB694918A GB 694918 A GB694918 A GB 694918A GB 1394451 A GB1394451 A GB 1394451A GB 1394451 A GB1394451 A GB 1394451A GB 694918 A GB694918 A GB 694918A
Authority
GB
United Kingdom
Prior art keywords
gas
liquid
tube
diffuser
velocity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1394451A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F S GIBBS Inc
Original Assignee
F S GIBBS Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by F S GIBBS Inc filed Critical F S GIBBS Inc
Publication of GB694918A publication Critical patent/GB694918A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2326—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles adding the flowing main component by suction means, e.g. using an ejector
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23762—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3133—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit characterised by the specific design of the injector
    • B01F25/31331—Perforated, multi-opening, with a plurality of holes
    • B01F25/313311—Porous injectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
    • B01F25/31421—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction the conduit being porous
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

694,918. Contacting liquids with gases. GIBBS, Inc., F. S. June 12, 1951 [Feb. 23, 1951], No. 13944/51. Class 55(ii) [Also in Group VI] A method of diffusing a gas in a liquid, wherein the gas is passed through a gas permeable barrier into a body of the liquid flowing in contact with the barrier, the velocity of the liquid being controlled to limit the size of the gas bubbles swept from the barrier. In Fig. 1 a gas-permeable tube 20 formed of electrically fused alumina containing about 90 per cent of aluminium oxide or of sponge metal is held within a cylindrical casing 10 placed in the suction line of a pump for the liquid, and is supplied through a line 32 and control valve 36 with gas from a pressure cylinder or a pressure vessel and compressor or, if air is the gas being diffused, from the atmosphere. A throttling valve 40 comprising, e.g., a flexible diaphragm 41 is placed upstream of the tube 20 to adjust the velocity of liquid flow and to place the liquid flowing past the tube 20 at a negative pressure to assist in the passage of gas through the diffuser. In alternative constructions the gas is admitted to a space 461 Fig. 5 surrounding the gas-permeable tube 20<SP>11</SP> and the liquid is drawn through the tube and in the construction of Fig. 5 by means of vaned members 56, is given a swirling motion about an insert 54 which is provided to increase the velocity of the liquid by virtue of reducing the effective cross-sectional area of the tube. The diffuser may be used in a circulating batch treatment system, Fig. 7, (not shown) or in continuous flow systems without or with provision for recirculation of liquid through a diffuser, Figs. 8 and 9, (not shown).
GB1394451A 1951-02-23 1951-06-12 Diffusion of gases in liquids Expired GB694918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US694918XA 1951-02-23 1951-02-23

Publications (1)

Publication Number Publication Date
GB694918A true GB694918A (en) 1953-07-29

Family

ID=22089340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1394451A Expired GB694918A (en) 1951-02-23 1951-06-12 Diffusion of gases in liquids

Country Status (1)

Country Link
GB (1) GB694918A (en)

Cited By (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951061A (en) * 1956-02-16 1960-08-30 Phillips Petroleum Co Process and apparatus for contacting materials
US3015331A (en) * 1957-10-17 1962-01-02 Dow Corning Blood oxygenator
US3118958A (en) * 1960-02-10 1964-01-21 Mildred M Kelly Apparatus for making cellular products
US3147217A (en) * 1958-05-19 1964-09-01 William M Bready Flotation method for the treatment and clarification of water
US3165562A (en) * 1962-06-14 1965-01-12 Gen Dynamics Corp Dispersing device
US3256802A (en) * 1962-03-14 1966-06-21 Shasta Beverage Division Of Co Continuous carbonation system
US3281014A (en) * 1963-08-09 1966-10-25 Canadian Breweries Ltd Method and apparatus for dispensing fermented beverages
US3294989A (en) * 1961-09-25 1966-12-27 Trw Inc Power conversion system
US3307701A (en) * 1963-09-05 1967-03-07 Krofta Milos Apparatus for purification of unclarified waste water
US3463404A (en) * 1966-12-21 1969-08-26 United Aircraft Corp Gas boundary layer variable area orifice
US3477581A (en) * 1967-09-21 1969-11-11 Donald M Stearns Sewage disposal system
US3711072A (en) * 1970-04-23 1973-01-16 D Waldenville Apparatus for oxygenation of liquids
FR2285172A1 (en) * 1974-09-20 1976-04-16 Commissariat Energie Atomique Diffusion of hydrogen into pressurised water - using palladium based selectively permeable barrier
US4022854A (en) * 1971-03-12 1977-05-10 Fmc Corporation Gas transmitting body for use in bubble shearing
US4024618A (en) * 1971-03-12 1977-05-24 Fmc Corporation Method of fabricating gas transmitting body for use in bubble shearing
US4071585A (en) * 1976-12-29 1978-01-31 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi type carburetor
US4110417A (en) * 1976-12-29 1978-08-29 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi type carburetor
US4116488A (en) * 1976-09-20 1978-09-26 Kennecott Copper Corporation In-situ mining method and apparatus
US4136139A (en) * 1976-12-16 1979-01-23 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi type carburetor
EP0001903A1 (en) * 1977-10-27 1979-05-16 BROWN BOVERI REAKTOR GmbH Method of and apparatus for introducing gas into the coolant liquid of nuclear reactors
US4269791A (en) * 1977-11-14 1981-05-26 The United States Of America As Represented By The Secretary Of The Navy Hydrogen-oxygen mixer apparatus and process
US4329234A (en) * 1980-04-15 1982-05-11 Exxon Research & Engineering Co. Multi-stage gas liquid reactor
US4674888A (en) * 1984-05-06 1987-06-23 Komax Systems, Inc. Gaseous injector for mixing apparatus
US4708829A (en) * 1983-10-27 1987-11-24 Sunds Defibrator Aktiebolag Apparatus for the removal of impurities from fiber suspensions
US4717515A (en) * 1985-04-29 1988-01-05 Wilfley Weber, Inc. Apparatus for dispersing fluids in liquids
US4818447A (en) * 1987-04-27 1989-04-04 Kiyomoto Tekko Kabushiki Kaisha Apparatus for mass transferring between phases different from each other
WO1989007015A1 (en) * 1988-01-27 1989-08-10 Virginia Tech Intellectual Properties, Inc. A process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles
US4857350A (en) * 1986-03-15 1989-08-15 Kiyomoto Tekko Kabushiki Kaisha Method for maintaining or restoring freshness of plants, vegetables or fruits by treating with water supersaturated with air
US4895683A (en) * 1987-04-27 1990-01-23 Kiyomoto Tekko Kabushiki Kaisha Apparatus for mass transferring between phases different from each other
US4897204A (en) * 1987-10-01 1990-01-30 Toshiba Ceramics Co., Ltd. Process and apparatus for gas dissolution
EP0364654A2 (en) * 1988-10-21 1990-04-25 The Deister Concentrator Co., Inc. Method and apparatus for generating microbubbles in froth flotation mineral concentration systems
US4931225A (en) * 1987-12-30 1990-06-05 Union Carbide Industrial Gases Technology Corporation Method and apparatus for dispersing a gas into a liquid
US4965022A (en) * 1987-07-01 1990-10-23 Union Carbide Industrial Gases Technology Corporation Process for dissolving a gas in a liquid
US4971731A (en) * 1988-10-21 1990-11-20 Deister Concentrator Company, Inc. Method and apparatus for generating microbubbles in froth flotation mineral concentration systems
US5049320A (en) * 1990-07-03 1991-09-17 International Environmental Systems, Inc. Gas dissolving system and method
US5078921A (en) * 1988-10-21 1992-01-07 The Deister Concentrator Company, Inc. Froth flotation apparatus
EP0464797A1 (en) * 1990-07-05 1992-01-08 Linde Aktiengesellschaft Methode and device for introducing gas in a fluid
WO1992004972A1 (en) * 1990-09-21 1992-04-02 Anton Steinecker Entwicklungs Gmbh & Co. Venting nozzle for liquids containing organic substances
US5122312A (en) * 1991-03-05 1992-06-16 Mott Metallurgical Corporation Bubble injection system
US5167798A (en) * 1988-01-27 1992-12-01 Virginia Tech Intellectual Properties, Inc. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
US5240650A (en) * 1991-09-18 1993-08-31 Anton Steinecker Entwicklungs Gmbh & Co. Ventilation nozzle for fluids
US5266240A (en) * 1991-03-20 1993-11-30 Servicios Corporativos Frisco, S.A. De C.V. Flotation reactor with external bubble generator
US5529190A (en) * 1995-02-06 1996-06-25 Ahlstrom Machinery, Inc. Gas sparged hydrocyclone with foam separating vessel
FR2733699A1 (en) * 1995-05-05 1996-11-08 Air Liquide Appts. for injection of a gas into a liq. flow
US5814210A (en) * 1988-01-27 1998-09-29 Virginia Tech Intellectual Properties, Inc. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
US5968352A (en) * 1998-10-09 1999-10-19 Novazone Gas contact tank
WO2000024501A2 (en) * 1998-10-28 2000-05-04 Margret Spiegel Method and device for introducing a gas into a liquid
EP1254700A1 (en) * 2001-05-03 2002-11-06 Sulzer Chemtech AG Flanged ring mountable between a pipe connection for the introduction of additives in a fluid stream
EP1319435A2 (en) * 2001-12-12 2003-06-18 Collectplan GmbH Method and apparatus for introducing a first medium in a second medium
US6767007B2 (en) 2002-03-25 2004-07-27 Homer C. Luman Direct injection contact apparatus for severe services
EP1481720A1 (en) * 2003-05-27 2004-12-01 OxyVital Vertriebs GmbH Method and apparatus for introducing a gas in a liquid
US6868701B2 (en) 2002-06-14 2005-03-22 Yong Mi Lee Washing machine equipped with means for generating microbubbles of air
WO2005044432A2 (en) * 2003-11-07 2005-05-19 Toyota Jidosha Kabushiki Kaisha Gas processing device
WO2008009623A1 (en) * 2006-07-17 2008-01-24 Nestec S.A. Cylindrical membrane apparatus for forming foam
WO2011131389A1 (en) * 2010-04-19 2011-10-27 Infracor Gmbh Tube reactor
EP2420312A3 (en) * 2010-08-16 2013-03-20 Linde Aktiengesellschaft Gas diffusion system and method of diffusing a gas into a fluid or liquid
US8771778B2 (en) 2010-09-09 2014-07-08 Frito-Lay Trading Company, Gmbh Stabilized foam
WO2016194049A1 (en) * 2015-05-29 2016-12-08 Ｊｆｅエンジニアリング株式会社 Condensing and mixing device, condensing and mixing method, evaporated gas re-liquefaction device, and evaporated gas re-liquefaction method
DE102010025131B4 (en) * 2010-06-25 2017-03-09 Ulrich Kahle Method and device for cleaning waters
US10477883B2 (en) 2015-08-25 2019-11-19 Cornelius, Inc. Gas injection assemblies for batch beverages having spargers
US10569196B2 (en) * 2013-08-28 2020-02-25 Outotec (Finland) Oy Method and apparatus for treating a feed stream for a flotation device
US10785996B2 (en) * 2015-08-25 2020-09-29 Cornelius, Inc. Apparatuses, systems, and methods for inline injection of gases into liquids
GB2586312A (en) * 2019-05-09 2021-02-17 William Curle Developments Ltd Improvements in or relating to storage and conveying apparatuses
US11040314B2 (en) 2019-01-08 2021-06-22 Marmon Foodservice Technologies, Inc. Apparatuses, systems, and methods for injecting gasses into beverages
US11148105B2 (en) * 2016-08-01 2021-10-19 Jiangsu Lanshan Environment Technology Co. Microbubble generation device

Cited By (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951061A (en) * 1956-02-16 1960-08-30 Phillips Petroleum Co Process and apparatus for contacting materials
US3015331A (en) * 1957-10-17 1962-01-02 Dow Corning Blood oxygenator
US3147217A (en) * 1958-05-19 1964-09-01 William M Bready Flotation method for the treatment and clarification of water
US3118958A (en) * 1960-02-10 1964-01-21 Mildred M Kelly Apparatus for making cellular products
US3294989A (en) * 1961-09-25 1966-12-27 Trw Inc Power conversion system
US3256802A (en) * 1962-03-14 1966-06-21 Shasta Beverage Division Of Co Continuous carbonation system
US3165562A (en) * 1962-06-14 1965-01-12 Gen Dynamics Corp Dispersing device
US3281014A (en) * 1963-08-09 1966-10-25 Canadian Breweries Ltd Method and apparatus for dispensing fermented beverages
US3307701A (en) * 1963-09-05 1967-03-07 Krofta Milos Apparatus for purification of unclarified waste water
US3463404A (en) * 1966-12-21 1969-08-26 United Aircraft Corp Gas boundary layer variable area orifice
US3477581A (en) * 1967-09-21 1969-11-11 Donald M Stearns Sewage disposal system
US3711072A (en) * 1970-04-23 1973-01-16 D Waldenville Apparatus for oxygenation of liquids
US4022854A (en) * 1971-03-12 1977-05-10 Fmc Corporation Gas transmitting body for use in bubble shearing
US4024618A (en) * 1971-03-12 1977-05-24 Fmc Corporation Method of fabricating gas transmitting body for use in bubble shearing
FR2285172A1 (en) * 1974-09-20 1976-04-16 Commissariat Energie Atomique Diffusion of hydrogen into pressurised water - using palladium based selectively permeable barrier
US4116488A (en) * 1976-09-20 1978-09-26 Kennecott Copper Corporation In-situ mining method and apparatus
US4136139A (en) * 1976-12-16 1979-01-23 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi type carburetor
US4071585A (en) * 1976-12-29 1978-01-31 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi type carburetor
US4110417A (en) * 1976-12-29 1978-08-29 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi type carburetor
EP0001903A1 (en) * 1977-10-27 1979-05-16 BROWN BOVERI REAKTOR GmbH Method of and apparatus for introducing gas into the coolant liquid of nuclear reactors
US4269791A (en) * 1977-11-14 1981-05-26 The United States Of America As Represented By The Secretary Of The Navy Hydrogen-oxygen mixer apparatus and process
US4329234A (en) * 1980-04-15 1982-05-11 Exxon Research & Engineering Co. Multi-stage gas liquid reactor
US4708829A (en) * 1983-10-27 1987-11-24 Sunds Defibrator Aktiebolag Apparatus for the removal of impurities from fiber suspensions
US4674888A (en) * 1984-05-06 1987-06-23 Komax Systems, Inc. Gaseous injector for mixing apparatus
US4717515A (en) * 1985-04-29 1988-01-05 Wilfley Weber, Inc. Apparatus for dispersing fluids in liquids
US4857350A (en) * 1986-03-15 1989-08-15 Kiyomoto Tekko Kabushiki Kaisha Method for maintaining or restoring freshness of plants, vegetables or fruits by treating with water supersaturated with air
US4818447A (en) * 1987-04-27 1989-04-04 Kiyomoto Tekko Kabushiki Kaisha Apparatus for mass transferring between phases different from each other
US4895683A (en) * 1987-04-27 1990-01-23 Kiyomoto Tekko Kabushiki Kaisha Apparatus for mass transferring between phases different from each other
US4965022A (en) * 1987-07-01 1990-10-23 Union Carbide Industrial Gases Technology Corporation Process for dissolving a gas in a liquid
US4897204A (en) * 1987-10-01 1990-01-30 Toshiba Ceramics Co., Ltd. Process and apparatus for gas dissolution
US4931225A (en) * 1987-12-30 1990-06-05 Union Carbide Industrial Gases Technology Corporation Method and apparatus for dispersing a gas into a liquid
WO1989007015A1 (en) * 1988-01-27 1989-08-10 Virginia Tech Intellectual Properties, Inc. A process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles
US4981582A (en) * 1988-01-27 1991-01-01 Virginia Tech Intellectual Properties, Inc. Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles
AU635503B2 (en) * 1988-01-27 1993-03-25 Virginia Tech Intellectual Properties, Inc. A process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles
US5814210A (en) * 1988-01-27 1998-09-29 Virginia Tech Intellectual Properties, Inc. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
US5397001A (en) * 1988-01-27 1995-03-14 Virginia Polytechnic Institute & State U. Apparatus for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
US5167798A (en) * 1988-01-27 1992-12-01 Virginia Tech Intellectual Properties, Inc. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
EP0364654A2 (en) * 1988-10-21 1990-04-25 The Deister Concentrator Co., Inc. Method and apparatus for generating microbubbles in froth flotation mineral concentration systems
US4971731A (en) * 1988-10-21 1990-11-20 Deister Concentrator Company, Inc. Method and apparatus for generating microbubbles in froth flotation mineral concentration systems
EP0364654A3 (en) * 1988-10-21 1991-01-23 The Deister Concentrator Co., Inc. Method and apparatus for generating microbubbles in froth flotation mineral concentration systems
US5078921A (en) * 1988-10-21 1992-01-07 The Deister Concentrator Company, Inc. Froth flotation apparatus
US5049320A (en) * 1990-07-03 1991-09-17 International Environmental Systems, Inc. Gas dissolving system and method
US5167806A (en) * 1990-07-03 1992-12-01 International Environmental Systems, Inc. Gas dissolving and releasing liquid treatment system
EP0464797A1 (en) * 1990-07-05 1992-01-08 Linde Aktiengesellschaft Methode and device for introducing gas in a fluid
WO1992004972A1 (en) * 1990-09-21 1992-04-02 Anton Steinecker Entwicklungs Gmbh & Co. Venting nozzle for liquids containing organic substances
US5122312A (en) * 1991-03-05 1992-06-16 Mott Metallurgical Corporation Bubble injection system
US5266240A (en) * 1991-03-20 1993-11-30 Servicios Corporativos Frisco, S.A. De C.V. Flotation reactor with external bubble generator
US5240650A (en) * 1991-09-18 1993-08-31 Anton Steinecker Entwicklungs Gmbh & Co. Ventilation nozzle for fluids
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