EP0513049B1 - Verfahren zur mechanischen behandlung von flüssigen bis dünnbreiigen medien - Google Patents

Verfahren zur mechanischen behandlung von flüssigen bis dünnbreiigen medien Download PDF

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Publication number
EP0513049B1
EP0513049B1 EP91902605A EP91902605A EP0513049B1 EP 0513049 B1 EP0513049 B1 EP 0513049B1 EP 91902605 A EP91902605 A EP 91902605A EP 91902605 A EP91902605 A EP 91902605A EP 0513049 B1 EP0513049 B1 EP 0513049B1
Authority
EP
European Patent Office
Prior art keywords
medium
lines
process along
spraying mechanism
water
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 - Lifetime
Application number
EP91902605A
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German (de)
English (en)
French (fr)
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EP0513049A1 (de
Inventor
Dieter Dipl.-Ing. Gabor
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Individual
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    • 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
    • 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
    • B01F23/234—Surface aerating
    • B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
    • B01F23/23421—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force the stirrers rotating about a vertical axis

Definitions

  • the invention relates to a method for the mechanical treatment of liquid to thin-pulp media according to the preamble of the main claim.
  • a large number of processes for the mechanical treatment of liquid to thin-pulp media have become known, which are mainly used in the fields of wastewater treatment, water treatment and the production of disperse mixtures.
  • the turbulence in particular by means of rotors, is used to achieve an intensive mixing of the starting components.
  • a high degree of dispersion is to be achieved by comminuting coarse constituents into smaller units.
  • the medium to be treated is filled from above into a funnel-shaped container, which it flows through from top to bottom due to gravity and leaves through a drain opening provided at the lower end of the funnel.
  • This device creates a vortex-like vortex which is intended to intensively mix the constituents present in the medium, for example cement and water.
  • This method has also become known in a further development (DE-A 33 25 952), in which a two-chamber system is used.
  • the inner, funnel-shaped chamber in turn serves to swirl the medium flowing through the chamber from top to bottom due to gravity, while the outer chamber serves to return the medium leaving the inner chamber to the inlet opening of the inner chamber.
  • a rotor mounted in the vertical axis of the container is used, the wings of which are located in the outer chamber below the outlet opening of the inner chamber and which conveys the medium back against gravity to the inlet opening of the inner chamber.
  • the invention has for its object to provide additional comminution of solid components in the medium to be treated.
  • the medium is conveyed into the spray device by suction. This enables additional energy to be introduced into the medium for the purpose of comminuting components of the medium and for dispersion.
  • repeated spraying of the medium in a short time enables a high energy input which leads to rapid dispersion of the constituents of the medium.
  • Coagulation is also determined by this treatment Components of the medium enabled, whereby they can be separated as solids from the liquid portions of the medium.
  • the coagulation can take place, for example, by cluster formation, which is promoted by the fine distribution of the components by means of the spray device.
  • the spray device is designed as a centrifugal wheel with an intake port which is connected on the one hand to the storage container of the medium and on the other hand with channels directed radially outwards.
  • the speed of the centrifugal wheel and the cross sections of the flow channels are selected so that the medium emerging from the radial channels is atomized and liquid portions of the medium partially change to the gas state.
  • the transition from liquid portions of the medium into the gas phase is controlled by regulating the temperature of the medium.
  • the cavitation effects can be used in a targeted manner.
  • increasing the temperature of the medium can facilitate the transition into the gas phase of liquid portions of the medium, so that the mechanical requirements for achieving the cavitation effect can be kept low.
  • the largest possible change in density of the medium can be brought about by suction and atomization by temperature control.
  • the pressure ratios along the feed channels of the medium to the spray device are varied. This configuration further increases the energy input into the medium, for example by promoting the cavitation effects.
  • the mixing of different proportions of the medium is promoted by additional measures, for example by the flow guidance before and / or after the spraying of the medium.
  • additional measures for example by the flow guidance before and / or after the spraying of the medium.
  • Such effects can consist, for example, of swirl effects which are achieved by appropriate flow guidance.
  • An increase in the cavitation effects due to increased gas formation at the intake manifold could also be achieved by varying the speed of the centrifugal wheel.
  • the change in the direction of flow of the medium in the intake manifold and in the centrifugal wheel can also produce such effects.
  • the device shown in FIG. 1 has a container with a bottle-shaped, upwardly tapering chamber 1 and a bell-shaped outer chamber 2 arranged around it, both of which are arranged rotationally symmetrically about an axis of symmetry 3.
  • a suction nozzle 4 is immersed, which is connected to a centrifugal wheel 5 in a form-fitting manner with its end protruding from the bottle neck of the inner chamber 1.
  • the centrifugal wheel 5 is also arranged rotationally symmetrically with respect to the axis of symmetry 3 of the two chambers 1 and 2 and is provided with radial channels 6 which run from the area around the axis of rotation to the outer boundary of the centrifugal wheel 5 and where they open into outlet openings 7. At the other ends, the radial channels 6 open into the intake manifold 4, for which purpose they are angled in the direction of the axis of symmetry 3.
  • a drive shaft 8 is articulated to the centrifugal wheel 5 and is connected to a drive unit (not shown).
  • the drive shaft 8 is guided into the outer space through a recess 9 in the outer wall 10 of the outer chamber 2, a seal being able to be provided between the shaft 8 and the outer wall 10.
  • the outer wall 10 is provided with a pressure relief valve 11 and a vacuum relief valve 12 for regulating the pressure of the outer chamber 2.
  • the outer wall 10 has two further recesses, namely an inlet opening 13 and an outlet opening 14.
  • the bottle-shaped outer wall 15 of the inner one Chamber 1 is firmly connected to the outer chamber 2, however, a plurality of passage openings 16 are provided between the inner chamber 1 and the outer chamber 2, in front of which flow plates 17 are arranged.
  • FIG. 2 shows a section through a centrifugal wheel 5 according to the invention, in which the radial channels 6 run in an arc from the inside to the outside, the outlet openings 7 being arranged approximately tangentially to the outer boundary of the centrifugal wheel 5.
  • the outlet from the channels 6 of the centrifugal wheel 5 takes place above the fill level of the medium to be treated, it being possible for the space provided for this purpose in the outer chamber 2 to be filled with air or another suitable gas.
  • the medium which is subject to strong rotational and centrifugal acceleration, which can be a mixture of different liquids and / or a liquid / solid mixture, changes into mist and is thrown into the air or gas volume of the chamber.
  • the mist is absorbed by the already condensed or sunken medium in container 2.
  • the passage openings 16 the medium is fed back to the intake manifold 4 of the centrifugal wheel 5.
  • a closed treatment chamber can also be dispensed with by immersing the suction nozzle of the centrifugal wheel in the medium, for example in a clarifier, a liquid manure pit or a body of water.
  • the procedure is carried out until the desired treatment result has been achieved.
  • the method can also be carried out continuously by continuously supplying medium to the storage container and removing a partial quantity of medium again after passing through the spray device. It must be ensured that the medium to be treated passes the spray device at least once.
  • the medium When treating liquid manure or waste water, the medium could be clarified by precipitating or sedimenting solid components.
  • the coagulation effect of the method according to the invention comes to the fore.
  • solid fractions coagulate to form larger units, for example clusters, and precipitate out.
  • the mineral content of mineral-containing water can be largely precipitated or sedimented, so that demineralized water is obtained.
  • a further change in treated water has so far not been scientifically proven, but it is suggested by the various sequelae and properties of the treated water.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Treatment Of Sludge (AREA)
  • Fertilizers (AREA)
  • Lubricants (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP91902605A 1990-01-30 1991-01-30 Verfahren zur mechanischen behandlung von flüssigen bis dünnbreiigen medien Expired - Lifetime EP0513049B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4002614 1990-01-30
DE4002614 1990-01-30
PCT/DE1991/000087 WO1991011251A1 (de) 1990-01-30 1991-01-30 Verfahren zur mechanischen behandlung von flüssigen bis dünnbreiigen medien

Publications (2)

Publication Number Publication Date
EP0513049A1 EP0513049A1 (de) 1992-11-19
EP0513049B1 true EP0513049B1 (de) 1994-10-05

Family

ID=6399033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91902605A Expired - Lifetime EP0513049B1 (de) 1990-01-30 1991-01-30 Verfahren zur mechanischen behandlung von flüssigen bis dünnbreiigen medien

Country Status (10)

Country Link
US (1) US5342529A (es)
EP (1) EP0513049B1 (es)
JP (1) JPH05503462A (es)
KR (1) KR920703193A (es)
AT (1) ATE112507T1 (es)
CA (1) CA2074957A1 (es)
DE (2) DE59103174D1 (es)
DK (1) DK0513049T3 (es)
ES (1) ES2065672T3 (es)
WO (1) WO1991011251A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE543853C2 (en) * 2019-12-17 2021-08-10 Kujtim Hyseni Gas generator and cavitator for gas generation
EP4077222A4 (en) * 2019-12-17 2024-02-28 Kujtim Hyseni CAVITATOR FOR GAS GENERATION
SE543854C2 (en) * 2019-12-17 2021-08-10 Kujtim Hyseni Cavitator for gas generation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE298868C (es) *
GB127705A (en) * 1918-05-31 1919-06-02 Kirkham Hulett And Chandler Lt Improvements in Apparatus for Effecting Intimate Contact between Liquids and Gases.
FR568836A (fr) * 1923-07-19 1924-04-02 Perfectionnements apportés aux appareils mèlangeurs et agitateurs
US2268219A (en) * 1940-03-14 1941-12-30 Turbo Mixer Corp Gas and liquid contact apparatus
US2560526A (en) * 1946-03-02 1951-07-10 Bastian Blessing Co Gas dissolving apparatus
CH298868A (de) * 1951-04-02 1954-05-31 Giovanola Freres Sa Vorrichtung zur Feinzerteilung von Flüssigkeiten.
FR1375822A (fr) * 1963-08-13 1964-10-23 Buss Ag Procédé de traitement de liquides par des agents gazeux, et installation pour la mise en oeuvre de ce procédé
DE1963614A1 (de) * 1969-12-19 1971-06-24 Bamag Verfahrenstechnik Gmbh Einrichtung zur Begasung von Fluessigkeiten
US4268398A (en) * 1978-07-03 1981-05-19 Shuck William D Sludge agitating method
BE884216A (nl) * 1980-07-08 1980-11-03 Haegeman Johny H Inrichting voor het mengen van gas met vloeistof of omgekeerd en voor het ontgassen van een vloeistof
CH654560A5 (en) * 1981-10-22 1986-02-28 Paul Ketterer Method and device for oxygen enrichment of the deep water in stagnant waters
US5085809A (en) * 1987-11-04 1992-02-04 Barrett, Haentjens & Co. Apparatus for gas absorption in a liquid

Also Published As

Publication number Publication date
WO1991011251A1 (de) 1991-08-08
DK0513049T3 (da) 1995-04-18
KR920703193A (ko) 1992-12-17
ES2065672T3 (es) 1995-02-16
DE59103174D1 (de) 1994-11-10
DE4102703A1 (de) 1991-09-19
JPH05503462A (ja) 1993-06-10
ATE112507T1 (de) 1994-10-15
EP0513049A1 (de) 1992-11-19
CA2074957A1 (en) 1991-07-31
US5342529A (en) 1994-08-30

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