EP0464797A1 - Verfahren und Vorrichtung zum Gaseintrag in eine Flüssigkeit - Google Patents

Verfahren und Vorrichtung zum Gaseintrag in eine Flüssigkeit Download PDF

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Publication number
EP0464797A1
EP0464797A1 EP91111037A EP91111037A EP0464797A1 EP 0464797 A1 EP0464797 A1 EP 0464797A1 EP 91111037 A EP91111037 A EP 91111037A EP 91111037 A EP91111037 A EP 91111037A EP 0464797 A1 EP0464797 A1 EP 0464797A1
Authority
EP
European Patent Office
Prior art keywords
liquid
oxygen
water
line
flow
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.)
Withdrawn
Application number
EP91111037A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wolfgang Dr. Rer. Nat. Danzer
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of EP0464797A1 publication Critical patent/EP0464797A1/de
Withdrawn legal-status Critical Current

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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
    • B01F23/231—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
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23114—Mounting the bubbling devices or the diffusers characterised by the way in which the different elements of the bubbling installation are mounted
    • B01F23/231142—Mounting the gas transporting elements, i.e. connections between conduits
    • 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
    • B01F23/2311—Mounting the bubbling devices or the diffusers

Definitions

  • the present invention is based on the object of providing a method and a device for introducing gas into liquids which enable an effective introduction of gas in an economical manner.
  • this object is achieved in that the gas is introduced into a liquid stream in a uniformly distributed manner in the flow direction.
  • a partial flow of the liquid is passed through a line, for example a pipe, in such a way that water speeds of preferably at least 0.5 m / s occur in the line.
  • Perforated gassing hoses are laid longitudinally in the line. The faster the liquid flows along the fumigation hose, the better the gas entry. Flow velocities of at least 1 m / s are particularly preferred. In order to keep the rate of oxygen exit per hole low, more holes are advantageously made in the hose for this method than in conventional gassing systems.
  • the fumigation hose has about 3000 to about 6000 holes per meter fumigation hose. If there are already high liquid velocities of at least 0.5 m / s at one point in a liquid system, for example in supply channels, the hoses can be placed directly in the channel without further expenditure. The liquid can also be introduced into a line which has such a steep gradient that a flow rate of at least 0.5 m / s is established. In this case, the gassing hoses are also simply laid longitudinally in the line.
  • a new type of reactor is used according to the invention, which is characterized in that the line for the liquid flow is laid in a ring and each has a tangentially arranged supply line and discharge line for the liquid and the supply line is connected to a pump , which is designed for the generation of a liquid flow with a flow velocity of at least 0.5 m / s.
  • the line can be designed, for example, as a tube.
  • the circular movement is kept in motion by tangentially flowing oxygen-poor and tangentially flowing oxygen-rich liquid.
  • the gassing hoses are advantageously laid on the inner tube surface distant from the center in order to take advantage of the relative pressure increase due to the centrifugal force of the water.
  • the new reactor type consumes less energy than the previous reactor types.
  • the power requirement of a pump for an oxygen reactor according to the state of the art results from the flow rate (dynamic component) and the delivery head (static component).
  • the delivery head is lower with the new reactor type, since the liquid no longer has to be compressed, but only has to be moved.
  • the disadvantage of the new dynamic reactor type compared to the known pressure reactor is that when the liquid saturated with gas is released, both sometimes very unpleasant turbulence occurs and the dissolved oxygen tends to go back into the gas form during the expansion.
  • the invention is generally suitable for dissolving gases in liquids.
  • the invention is intended for the introduction of oxygen into water, for example wastewater or drinking water.
  • the invention is particularly suitable, for example, for the introduction of oxygen into the fish water of a fish farm.
  • the figure shows a water inlet channel of a fish farm.
  • the water inlet channel 1 has a width of approximately 0.9 m and a depth of approximately 0.6 m.
  • ten perforated gassing hoses 2 each with a length of approx. 40 m, are laid parallel to the flow direction of the water, ie a hose package with a length of approx. 40 m results.
  • the hoses have about 1000 holes per meter of hose length.
  • the channel has such a steep gradient that the water flowing in it has a flow rate of approx. 1 m / s.
  • About 540 liters of water per second are fed via channel 1 to the fish ponds not shown in the drawing.
  • the water has a temperature of approx. 20 ° C. the oxygen pressure in the hose is approximately 0.8 bar.
  • the hoses are exposed to approximately 3.9 m 3 of oxygen per hour.
  • the water In front of the hose package 2, the water has a dissolved oxygen content of approximately 7.3 mg / l. After the hose package 2, the dissolved oxygen content is 9.5 mg / l. The result is an entry efficiency of 82.6%. No outgassing of the oxygen-enriched water can be measured up to 50 m after the hose package 2.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Measuring Volume Flow (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP91111037A 1990-07-05 1991-07-03 Verfahren und Vorrichtung zum Gaseintrag in eine Flüssigkeit Withdrawn EP0464797A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4021366 1990-07-05
DE4021366A DE4021366A1 (de) 1990-07-05 1990-07-05 Verfahren und vorrichtung zum gaseintrag in eine fluessigkeit

Publications (1)

Publication Number Publication Date
EP0464797A1 true EP0464797A1 (de) 1992-01-08

Family

ID=6409683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111037A Withdrawn EP0464797A1 (de) 1990-07-05 1991-07-03 Verfahren und Vorrichtung zum Gaseintrag in eine Flüssigkeit

Country Status (4)

Country Link
EP (1) EP0464797A1 (pt)
DE (1) DE4021366A1 (pt)
PT (1) PT98217A (pt)
YU (1) YU80891A (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1015101A1 (en) * 1997-04-04 2000-07-05 Daniel H. Dickman Aeration diffuser

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860240A1 (de) * 1998-12-24 2000-06-29 Ruhrgas Ag Vorrichtung zum Mischen zweier Fluidkomponenten

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR371308A (fr) * 1906-11-10 1907-03-05 Heinrich Stroh Procédé et appareil pour dissoudre du gaz dans des liquides et pour le séparer desdits liquides
US2383946A (en) * 1941-10-09 1945-09-04 Tietig Chester Method and apparatus for fluid contact
GB694918A (en) * 1951-02-23 1953-07-29 F S Gibbs Inc Diffusion of gases in liquids
BE685372A (pt) * 1965-08-16 1967-01-16
US3417975A (en) * 1964-12-01 1968-12-24 Union Carbide Corp Apparatus for liquid-gas contacting tray
CH475920A (de) * 1966-11-09 1969-07-31 Schreiber August Verfahren und Vorrichtung zur Abwasserreinigung, wobei Luft in das strömende Belebtschlammabwassergemisch durch Belüftungseinrichtungen eingeblasen wird
CA949239A (en) * 1971-07-06 1974-06-11 Svetislav Bogdanovic-Baron Fluid aerating means
US3977606A (en) * 1975-05-05 1976-08-31 Wyss Robert J Diffuser device
US4360234A (en) * 1976-09-20 1982-11-23 Kennecott Copper Corporation In-situ method and apparatus for sparging gas bubbles
EP0105593A1 (en) * 1982-09-03 1984-04-18 Atomic Energy Of Canada Limited Dispersing liquid slugs in gas pipelines

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR371308A (fr) * 1906-11-10 1907-03-05 Heinrich Stroh Procédé et appareil pour dissoudre du gaz dans des liquides et pour le séparer desdits liquides
US2383946A (en) * 1941-10-09 1945-09-04 Tietig Chester Method and apparatus for fluid contact
GB694918A (en) * 1951-02-23 1953-07-29 F S Gibbs Inc Diffusion of gases in liquids
US3417975A (en) * 1964-12-01 1968-12-24 Union Carbide Corp Apparatus for liquid-gas contacting tray
BE685372A (pt) * 1965-08-16 1967-01-16
CH475920A (de) * 1966-11-09 1969-07-31 Schreiber August Verfahren und Vorrichtung zur Abwasserreinigung, wobei Luft in das strömende Belebtschlammabwassergemisch durch Belüftungseinrichtungen eingeblasen wird
CA949239A (en) * 1971-07-06 1974-06-11 Svetislav Bogdanovic-Baron Fluid aerating means
US3977606A (en) * 1975-05-05 1976-08-31 Wyss Robert J Diffuser device
US4360234A (en) * 1976-09-20 1982-11-23 Kennecott Copper Corporation In-situ method and apparatus for sparging gas bubbles
EP0105593A1 (en) * 1982-09-03 1984-04-18 Atomic Energy Of Canada Limited Dispersing liquid slugs in gas pipelines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1015101A1 (en) * 1997-04-04 2000-07-05 Daniel H. Dickman Aeration diffuser
EP1015101A4 (en) * 1997-04-04 2001-01-17 Daniel H Dickman DIFFUSER-AERATOR

Also Published As

Publication number Publication date
PT98217A (pt) 1993-09-30
DE4021366A1 (de) 1992-01-09
YU80891A (sh) 1993-11-16

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