EP0376008A1 - Système d'introduction de gaz - Google Patents

Système d'introduction de gaz Download PDF

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Publication number
EP0376008A1
EP0376008A1 EP89122476A EP89122476A EP0376008A1 EP 0376008 A1 EP0376008 A1 EP 0376008A1 EP 89122476 A EP89122476 A EP 89122476A EP 89122476 A EP89122476 A EP 89122476A EP 0376008 A1 EP0376008 A1 EP 0376008A1
Authority
EP
European Patent Office
Prior art keywords
container
gas
nozzle
medium
nozzles
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.)
Granted
Application number
EP89122476A
Other languages
German (de)
English (en)
Other versions
EP0376008B1 (fr
Inventor
Reinhard Dipl.-Ing. Strigl
Manfred Dr.-Ing. Rossmann
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
Priority to AT89122476T priority Critical patent/ATE86140T1/de
Publication of EP0376008A1 publication Critical patent/EP0376008A1/fr
Application granted granted Critical
Publication of EP0376008B1 publication Critical patent/EP0376008B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01F23/238—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using vibrations, electrical or magnetic energy, radiations
    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/406—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom
    • B01F33/4062—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom with means for modifying the gas pressure or for supplying gas at different pressures or in different volumes at different parts of the bottom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71755—Feed mechanisms characterised by the means for feeding the components to the mixer using means for feeding components in a pulsating or intermittent manner

Definitions

  • the invention relates to a device for introducing gas into a flowable medium, which is located in a container.
  • Such gas entry systems are widely used.
  • fumigation candles which are arranged on the bottom of a treatment basin, are used for introducing oxygen-containing gas into waste water.
  • gas entry systems for purging molten metals in a pan.
  • steel melts or aluminum melts are aftertreated by purging with inert gas.
  • the gas is blown onto the melts via lances or introduced from below through nozzles or plugs from the bottom of the pan.
  • it is important to introduce the gas into the flowable medium as finely as possible.
  • media with high density, eg metal melts a fine-bubble entry with the conventional gas entry system is not guaranteed. Due to the high density of the medium, the originally small gas bubbles combine directly behind the gas introduction device to form a large one, which, for example, worsens the purging effect when post-treating a molten metal.
  • the present invention is therefore based on the object of designing a device of the type mentioned at the outset in such a way that a fine-bubble gas input is achieved in a simple and economical manner.
  • the floor nozzles emit gas pulsating into the medium essentially in a vertical upward direction. As high-frequency gas pulsation as possible ensures that the gas bubbles tear off in small dimensions. A conglomeration of small gas bubbles to large ones is prevented. Flutter valves, fast-acting solenoid valves, motor-operated ball valves or other fast-opening and closing valves can be used to pulsate the gas. The valves are arranged immediately before the gas enters the floor nozzles.
  • At least one nozzle is preferably additionally arranged such that its outlet opening points in a substantially horizontal direction which includes an angle with the container wall which is equal to or greater than 0 ° and is less than 90 °.
  • the gas can be blown into the flowable medium in such a way that the medium is set in rotation about the vertical cylinder or pan axis.
  • the gas bubbles in the rotating medium experience shear forces that prevent large gas bubbles from forming.
  • the nozzle is expediently arranged such that its outlet opening points in a substantially horizontal direction, which encloses an angle of approximately 0 ° to approximately 30 ° with the container wall.
  • the nozzle is preferably installed on the container wall or in the immediate vicinity of the container wall in the container such that the outlet opening is immersed in the medium.
  • the medium can be easily rotated by blowing in gas, on the other hand, there are no disruptive nozzles in the inside of the container.
  • a plurality of nozzles are attached in the container along the container wall in such a way that their outlet openings point essentially parallel to the container wall.
  • the container can be designed, for example, as an aeration tank for wastewater treatment or as a pan for post-treatment of a molten metal.
  • the nozzle with a nozzle head made of porous material, on the one hand to ensure a fine-bubble gas entry and on the other hand to be armed against high thermal loads caused by the hot molten metal.
  • a porous stone with directed porosity is preferably used.
  • the floor nozzles are also preferably provided with nozzle heads made of porous material.
  • the nozzle is connected to a pressure line for highly compressed gas.
  • the application can be continuous or pulsating.
  • the floor nozzles are also connected to pressure lines for highly compressed gas.
  • the quick-opening and closing valves mentioned are arranged in the pressure lines immediately before the floor nozzles.
  • the gas introduction system according to the invention is particularly suitable for use in so-called ladle metallurgy, that is to say when post-treating metal in the ladle.
  • ladle metallurgy that is to say when post-treating metal in the ladle.
  • the invention can also be used in wastewater treatment, for example in order to introduce oxygen into the wastewater in fine bubbles.
  • the gas entry system according to the invention can also be used to advantage when stripping liquids in wastewater technology, food technology or the chemical industry.
  • the gas feed system according to the invention also has the decisive advantage of not having to move mechanically moving parts. This represents a significant advantage over stirring systems, which cannot be used in steel treatment, for example, because of the high density of the molten steel.
  • the figure shows a pan for post-treatment of molten steel.
  • molten steel 2 which is to be treated by purging with nitrogen.
  • Nozzles 4 with nozzle heads 5 made of porous stone are arranged on the pan shell 3.
  • the porous stone has a directed porosity.
  • the nozzles 4 are arranged such that the outlet openings of the nozzle heads 5 are directed essentially parallel to the pan jacket 3.
  • the nozzles 4 are charged with highly compressed nitrogen gas via a pressure line (not shown).
  • the nozzles 4 blow the gas into the molten steel so that it is rotated around the vertical pan axis.
  • nitrogen gas is pulsed into the molten steel from below.
  • the floor nozzles 7 are connected to pressure lines (not shown) for highly compressed nitrogen gas. Immediately in front of the floor nozzles 7, fast-acting solenoid valves are arranged in the pressure lines, which allow a pulsating gas input.
  • the floor nozzles 7 are designed as porous plug stones with directed porosity in order to prevent blockages by the molten steel.
  • the pulsating gas input ensures that the gas bubbles tear off in a small expansion when they come into contact with the rotating steel melt and are carried along by the rotating steel melt. A conglomeration of the small gas bubbles to large ones is prevented.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP89122476A 1988-12-10 1989-12-06 Système d'introduction de gaz Expired - Lifetime EP0376008B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89122476T ATE86140T1 (de) 1988-12-10 1989-12-06 Gaseintragssystem.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3841618 1988-12-10
DE3841618A DE3841618A1 (de) 1988-12-10 1988-12-10 Gaseintragssystem

Publications (2)

Publication Number Publication Date
EP0376008A1 true EP0376008A1 (fr) 1990-07-04
EP0376008B1 EP0376008B1 (fr) 1993-03-03

Family

ID=6368865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122476A Expired - Lifetime EP0376008B1 (fr) 1988-12-10 1989-12-06 Système d'introduction de gaz

Country Status (4)

Country Link
EP (1) EP0376008B1 (fr)
AT (1) ATE86140T1 (fr)
DE (2) DE3841618A1 (fr)
ES (1) ES2040444T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053174A1 (fr) 2006-10-30 2008-05-08 The University Of Sheffield Production de bulles pour l'aération ou pour d'autres fins
DE102009022208A1 (de) 2009-05-20 2010-11-25 Messer Group Gmbh Verfahren und Vorrichtung zum Behandeln von Metallschmelzen
US10377651B2 (en) 2006-10-30 2019-08-13 Perlemax Ltd Bubble generation for aeration and other purposes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19517444C1 (de) * 1995-05-12 1996-01-18 Strate Maschf Vorrichtung für die Zufuhr von Sauerstoff in Abwasser
DE102005016080B4 (de) * 2005-04-08 2009-10-29 Technocon Gmbh Vorrichtung zum biologischen Reinigen von Abwasser

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL266357A (fr) * 1900-01-01
DE629722C (de) * 1934-10-25 1936-05-09 Louis Peters Verfahren und Vorrichtung zum gleichmaessigen Durchmischen pulverfoermigen Gutes
DE726101C (de) * 1938-04-29 1942-10-21 Karl Ludwig Lanninger Einrichtung zum Umwaelzen des Inhalts von Abwasser- oder Guellegruben im Kreislauf
CH336250A (fr) * 1955-06-28 1959-02-15 Fuller Co Procédé pour le mélange d'une matière pulvérulente et appareil pour la mise en oeuvre du procédé
US3259998A (en) * 1962-08-17 1966-07-12 Siderurgie Fse Inst Rech Device for the fluidization of powdered materials
DE1782092A1 (de) * 1968-07-18 1971-07-08 Inst Chemii Ogolnej Verfahren zum Mischen von pulverfoermigen und feinkoernigen Feststoffen mit Fluessigkeiten und Vorrichtung zur Durchfuehrung des Verfahrens
US3653639A (en) * 1971-02-04 1972-04-04 Whirl Air Flow Corp High pressure air and liquid blending method and apparatus for discrete materials
FR2163802A5 (en) * 1971-12-02 1973-07-27 Rolland A Pasty animal food prods - mixing and distributing appts eg pigswill
FR2293972A1 (fr) * 1974-12-09 1976-07-09 Nat Res Dev Appareil et procede destines a melanger des matieres poudreuses
DE2722202A1 (de) * 1976-05-20 1977-12-01 Boc Ltd Verfahren und einrichtung zur behandlung einer fluessigkeit mit einem gas
EP0069633A1 (fr) * 1981-07-06 1983-01-12 DENIS-SERTAC Société Anonyme Procédé et silo d'homogénéisation de matières pulvérulentes
DE3433018A1 (de) * 1984-09-07 1986-03-20 Linde Ag Vorrichtung zur biologischen reinigung von abwasser
EP0225526A2 (fr) * 1985-12-05 1987-06-16 ABS International S.A. Appareil pour traiter un liquid avec des gaz ou pour mélanger des liquides

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL266357A (fr) * 1900-01-01
DE629722C (de) * 1934-10-25 1936-05-09 Louis Peters Verfahren und Vorrichtung zum gleichmaessigen Durchmischen pulverfoermigen Gutes
DE726101C (de) * 1938-04-29 1942-10-21 Karl Ludwig Lanninger Einrichtung zum Umwaelzen des Inhalts von Abwasser- oder Guellegruben im Kreislauf
CH336250A (fr) * 1955-06-28 1959-02-15 Fuller Co Procédé pour le mélange d'une matière pulvérulente et appareil pour la mise en oeuvre du procédé
US3259998A (en) * 1962-08-17 1966-07-12 Siderurgie Fse Inst Rech Device for the fluidization of powdered materials
DE1782092A1 (de) * 1968-07-18 1971-07-08 Inst Chemii Ogolnej Verfahren zum Mischen von pulverfoermigen und feinkoernigen Feststoffen mit Fluessigkeiten und Vorrichtung zur Durchfuehrung des Verfahrens
US3653639A (en) * 1971-02-04 1972-04-04 Whirl Air Flow Corp High pressure air and liquid blending method and apparatus for discrete materials
FR2163802A5 (en) * 1971-12-02 1973-07-27 Rolland A Pasty animal food prods - mixing and distributing appts eg pigswill
FR2293972A1 (fr) * 1974-12-09 1976-07-09 Nat Res Dev Appareil et procede destines a melanger des matieres poudreuses
DE2722202A1 (de) * 1976-05-20 1977-12-01 Boc Ltd Verfahren und einrichtung zur behandlung einer fluessigkeit mit einem gas
EP0069633A1 (fr) * 1981-07-06 1983-01-12 DENIS-SERTAC Société Anonyme Procédé et silo d'homogénéisation de matières pulvérulentes
DE3433018A1 (de) * 1984-09-07 1986-03-20 Linde Ag Vorrichtung zur biologischen reinigung von abwasser
EP0225526A2 (fr) * 1985-12-05 1987-06-16 ABS International S.A. Appareil pour traiter un liquid avec des gaz ou pour mélanger des liquides

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053174A1 (fr) 2006-10-30 2008-05-08 The University Of Sheffield Production de bulles pour l'aération ou pour d'autres fins
GB2443396B (en) * 2006-10-30 2011-10-19 Univ Sheffield Bubble generation for aeration and other purposes
US8287175B2 (en) 2006-10-30 2012-10-16 Perlemax Limited Bubble generation for aeration and other purposes
US10377651B2 (en) 2006-10-30 2019-08-13 Perlemax Ltd Bubble generation for aeration and other purposes
DE102009022208A1 (de) 2009-05-20 2010-11-25 Messer Group Gmbh Verfahren und Vorrichtung zum Behandeln von Metallschmelzen
DE102009022208B4 (de) * 2009-05-20 2013-03-28 Messer Group Gmbh Verfahren zum Behandeln von Metallschmelzen

Also Published As

Publication number Publication date
EP0376008B1 (fr) 1993-03-03
ES2040444T3 (es) 1993-10-16
DE3841618A1 (de) 1990-06-13
ATE86140T1 (de) 1993-03-15
DE58903672D1 (de) 1993-04-08

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