EP0198073B1 - Dispositif d'introduction d'un gaz dans un liquide - Google Patents

Dispositif d'introduction d'un gaz dans un liquide Download PDF

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Publication number
EP0198073B1
EP0198073B1 EP85905619A EP85905619A EP0198073B1 EP 0198073 B1 EP0198073 B1 EP 0198073B1 EP 85905619 A EP85905619 A EP 85905619A EP 85905619 A EP85905619 A EP 85905619A EP 0198073 B1 EP0198073 B1 EP 0198073B1
Authority
EP
European Patent Office
Prior art keywords
liquid
annular gap
chamber
diffuser
air
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
EP85905619A
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German (de)
English (en)
Other versions
EP0198073A1 (fr
Inventor
Hans-Otto Schwarze
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.)
HOSCH FORDERTECHNIK GmbH
Original Assignee
HOSCH FORDERTECHNIK 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 HOSCH FORDERTECHNIK GmbH filed Critical HOSCH FORDERTECHNIK GmbH
Publication of EP0198073A1 publication Critical patent/EP0198073A1/fr
Application granted granted Critical
Publication of EP0198073B1 publication Critical patent/EP0198073B1/fr
Expired 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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/305—Injector mixers the additional component being axially fed and radially discharged through a circumferential outlet
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/75—Flowing liquid aspirates gas

Definitions

  • the invention relates to a device for continuously introducing a gas, in particular air, into a liquid, in particular water, for water activation, water treatment, flotation, deink plants or the like, with a liquid-shaped distributor device designed as an essentially circular annular gap with a horizontally running central plane , at least one gas outlet opening including feed line and a diffuser with the same horizontally extending central plane downstream of the distributor device, the gas outlet openings opening above and below the annular gap each being annular openings of an air chamber.
  • a liquid-shaped distributor device designed as an essentially circular annular gap with a horizontally running central plane , at least one gas outlet opening including feed line and a diffuser with the same horizontally extending central plane downstream of the distributor device, the gas outlet openings opening above and below the annular gap each being annular openings of an air chamber.
  • DE-OS 3015788 discloses a gassing device in the course of a flotation device.
  • the actual device consists of a cuboid housing with a flat nozzle, a series of air inlet openings and a flat diffuser with flat boundary surfaces.
  • For each flotation device several gassing devices are used, the swirl being imparted to the liquid of the flotation chamber, which is circular in cross section, by inclining the gassing devices.
  • the flat nozzle shape was primarily chosen to counteract the blockage of fibers and the like previously observed in nozzles.
  • FR-A-2 397870 teaches to feed a first fluid into a second by means of a jet device, one of the fluids entering the center of the device and drawing in the other fluid.
  • the fluid mixture then flows towards the periphery of the device.
  • the device itself has two plates arranged at a distance from one another, between which the fluid mixture moves. In the device, the risk of blockage is already reduced, but not to a sufficient extent, by using an annular nozzle formed from the two plates.
  • the annular gap of the distributor device forms the outlet of a nozzle-like chamber, the cross section of which narrows monotonously on the way from a feed line to the annular gap.
  • the diffuser has two opposing boundary surfaces on either side of the liquid emerging from the annular gap. the distance between them on a current path from the inside to the outside, taking into account the growing circumference of the current path with increasing diameter, is selected so that the circular diffuser with a conical cross section has an overall widening that that of a circular diffuser with an opening angle of 2 ° to Corresponds to 6 °.
  • the device according to the invention is therefore equipped with an endless ring nozzle in which there is no side boundary in the form of an end wall or the like. After an initially small blockage, a bridge to a fixed part cannot form at any point in the annular gap, which bridge can then no longer be removed by the current flow. Rather, in the device according to the invention, it can be expected that a blockage will dissolve immediately before it leads to a noticeable impairment of the flow conditions.
  • the production is achieved by assembling turned parts, which can usually be manufactured particularly economically, even on machines. Finally, a single supply for the liquid and for the gas is required in order to supply the device, which is anyway to be installed in circular flotation plants, with operating materials.
  • a gassing device has become known from European patent application 35243, in which the liquid jet is directed onto an acute rotating body and is thereby deflected approximately horizontally. During the deflection or on the way from the exit of the liquid from the nozzle to the tip of the rotating body, the gas is mixed with the liquid, the rotating body together with the expanded air supply forming a curved diffuser in which the flow is slowed down and its internal pressure increases becomes. As a result, the gas transfer into the liquid is poor; there is also an unfavorable ratio at the liquid nozzle between the outer surface and thus the gas entry surface to the volume flow of the liquid, which also prevents an abundant gas transfer into the liquid. In this known device, the mixture of liquid and gas is draw radially give, but otherwise there are no similarities to the device according to the invention.
  • a typical device according to the invention is designed so that the annular gap has a clear width of 5 mm, the exit velocity of the liquid from the annular gap is about 12-13 m / s and a sufficient outflow velocity at the outlet of the diffuser at a liquid height of about 1 , 5 to 2 m is present in the treatment pool.
  • the latter parameter has proven to be favorable for flotations and treatment tanks of all kinds. With a clear width of 5 mm for the annular gap there is sufficient security against clogging of the annular gap.
  • the device according to the invention is usually arranged in the center of a basin with a circular cross-section near the bottom. If there is to be a slight swirl flow within the basin, low-resistance spacer webs can be arranged between the boundary surfaces of the diffuser, which are slightly curved and produce the swirl to a sufficient extent. With a correspondingly full design of the spacer webs, they can be used, with or without curvature, to supply the air chamber below with air from the air chamber above, a pipe leading to the air chamber above, the free end of which is located above the liquid level in the assigned treatment tank. In deviation from this, the lower air chamber can also be supplied from the upper air chamber by separate pipelines or by connecting lines outside the device.
  • the supply of one air chamber from the other air chamber provided with a supply line can also take place directly via the air outlet openings.
  • the ring nozzle is then closed at predetermined points by spacers or fastening pieces, behind which a liquid-free area is formed in the flow shadow, which is used for the overflow of the gas from one chamber to the other.
  • spacers or fasteners evenly distributed around the circumference are sufficient to create these overflow areas. If necessary, the width can be varied in the circumferential direction of the annular gap.
  • the supply of the liquid to the annular gap should be designed with particular care since, with the correct shape, considerable savings in running operating costs can be achieved.
  • Particularly advantageous conditions result when the annular gap forms the outlet of a chamber, to the top of which the feed line for the liquid is connected, and whose cross section narrows monotonously on the way from the feed line to the annular gap. This is equivalent to the fact that the liquid is continuously accelerated, since the respective effective flow cross-section from the inlet to the annular gap becomes smaller without a jump and without widening to a previous level.
  • the annular gap finally forms the narrowest point from which the liquid emerges at high speed.
  • the inlet of the diffuser is designed to be significantly larger in cross section than the annular gap.
  • the suction force of the liquid emerging from the annular gap is sufficient to automatically suck up the air chambers that have filled up through the openings after the rest periods.
  • the device according to the invention shown in FIG. 1 essentially consists of a housing 1, formed from an upper housing part 2 and a lower housing part 3.
  • a housing 1 formed from an upper housing part 2 and a lower housing part 3.
  • the inlet 4 opens into a chamber 5, the lower end of the inlet 4 already being part of the cross-sectional narrowing down the chamber 5.
  • the end of the chamber 5 is formed by an annular gap 6, to which the liquid flows with a constant increase in speed.
  • a tip 7 in the middle of a bottom 21 of the chamber 5, which is designed as an annular trough, is involved in the uniform distribution of the flow over the circumferential, endless annular gap 6.
  • the liquid emerging from the annular gap 6 flows past openings 8 into a diffuser 14, the openings 8 forming the outlet of air chambers 9 and 10, which are supplied with gas, in the present case with air, via supply lines 11 and 12, respectively.
  • the liquid jet takes up gas in the area of the openings 8, and the resulting increase in volume of the mixture now present is taken into account by a correspondingly enlarged inlet of the diffuser 14.
  • the boundary surfaces 17 and 18 of the diffuser 14 formed by two disks 15 and 16 run towards each other slightly towards the outside, but overall there is an expansion for the medium flowing through the diffuser 14, namely due to the expansion in the circumferential direction with increasing distance from the annular gap 6.
  • Evenly distributed around the circumference of the diffuser 14 are spacers 19, in the immediate vicinity of which a continuous screw bolt 20 connects the two housing parts 2 and 3 to one another.
  • the screw bolt 20 and in its flow shadow the spacer 19 hinder the outlet of the diffuser at three points, but this impairment of the flow can be tolerated without any significant losses.
  • the supply line 12 to the lower air chamber 10 must of course project to a level which is above the liquid level in the treatment tank (not shown), in the center of which near the bottom the device according to FIG. 1 is inserted. Otherwise, the container would run empty in the rest periods via the opening 8, the lower air chamber 10 and the feed line 12. It can happen that the radial liquid jet emerging from the annular gap 6 does not completely empty the U-shaped section of the feed line 12. For this reason, a valve 22 is provided at the deepest point of the U-shaped section, which is opened briefly when the system is started up and, when the air has already been drawn in, discharges the remaining liquid accumulated here through the supply line 12. Thereafter, the valve 22 can be closed again and need not be taken into account for the rest of the operation.
  • the bottom 21 of the chamber 5 is interchangeably inserted into the lower housing part 3, whereby in particular the width of the annular gap 6 and the shape of the chamber bottom vary slightly and can be adapted to different tasks. If e.g. B. the tip 7 tends to accumulate fiber or other contaminants from the liquid and so there is a risk of clogging of the annular gap 6, the bottom of the chamber 5 can be slightly curved like a watch glass with the lowest point in the center. A variation of the annular gap 6 is possible by changing the thickness of the bottom 21. If the diffuser 14 is also to be changed, spacers 19 of different thicknesses can be used and the bolts 20 can be tightened to a different span length.
  • the exemplary embodiment shown in FIG. 2 is intended for a fairly large liquid throughput, that is to say for a larger system, while the exemplary embodiment according to FIG. 1 is reserved for a substantially smaller system with a much lower liquid throughput.
  • Corresponding differences are also present in the outer dimensions, the exact dimensions being based on the liquid throughput quantity and on the selected outlet speed in the annular gap. Otherwise, both devices are very similar, although the higher throughput also results in deviations, which are described in particularly great detail below.
  • the upper housing part 30 and a lower housing part 31 cooperate so that an annular gap 33 is formed between them, which is fed from an annular chamber 32.
  • the annular chamber 32 is approximately toroidal, with a continuously narrowing acceleration path radially outward, which has its narrowest point in the annular gap 33.
  • the annular chamber 32 is fed by a plurality of feed lines, preferably located opposite one another in pairs, which are indicated by dashed lines in FIG. Deviating from this, there can of course be a central supply of the type of chamber 5 according to FIG.
  • the air chambers 34 are located above and below the diffuser 43 Exit in the form of openings 35 are located immediately above and below the exit of the annular gap 33. All of the air is supplied to the upper chamber 34 via a plurality of supply lines 36, of which only a single supply line 36 is shown in FIG. 2 for the sake of clarity. From here, a connecting line 37 leads to the lower air chamber 34.
  • the connecting line 37 extends approximately to the wall of the treatment container in which the device according to FIG. 2 is accommodated. This is indicated by dashed lines within the connecting line 37.
  • the connecting line 37 is also available in several copies in order to ensure an adequate supply of the lower air chamber 34 with gas.
  • the diffuser 43 is in turn formed from two rings 38 and 39, which are angled at their outer ends upwards or downwards.
  • a plurality of spacer webs 42 which are evenly distributed around the circumference, are provided between their boundary surfaces 40 and 41, which are designed to be particularly low-resistance and keep the housing halves 30 and 31 and the associated housing parts at a distance from one another.
  • the spacer webs 42 can be hollow and, in addition to the connecting line 37 or in its place, can ensure the passage of air from the upper air chamber 34 into the lower air chamber 34.
  • a swirl of the flow leaving the diffuser 43 can be generated, namely by a slight curvature of all spacer webs 42 in the same direction in the same direction.
  • a cross-sectional view through one of the spacer webs 42 producing a swirl is shown in FIG.
  • the clear width of the annular gap 33 can be adjusted with the aid of disks 45, which lie between the two housing parts 30 and 31 or between the lower housing part 31 and a further housing part 44, which forms the bottom of the lower air chamber 34.
  • a change of the diffuser 43 with respect to its profile or with respect to the distance of its boundary surfaces 40 and 41 is also possible by changing the rings 38 and 39 or by changing the height of the spacer webs 42. In this way, adjustments to different uses can be made relatively quickly.
  • both air chambers 34 and the feed line 36 are filled with liquid up to the level within the container in which the device according to FIG. 2 is used.
  • a suction effect occurs in the region of the openings 35, in which further liquid is initially mixed into the liquid jet.
  • the liquid level in the feed line 36 and in all further feed lines gradually drops until the upper air chamber 34 is filled with gas. From this point in time, gas is already metered into the liquid from the upper air chamber 34 via the associated opening 35, while liquid still passes through the lower air chamber 34 into the liquid jet. If the connecting lines 37 are also completely emptied, a certain residual liquid remains on the bottom of the lower air chamber 34, which is no longer automatically removed, but does not further interfere with ongoing operation.
  • the exemplary embodiment shown in FIGS. 2 and 3 can also be produced almost exclusively from turned parts, which also applies to the exemplary embodiment according to FIG. 1.
  • the manufacturing costs are correspondingly low, which indirectly decrease even further because there is a relatively central supply of the operating resources to the device, which makes the usual distribution along the circumference of a treatment basin unnecessary.
  • the actual device can be made of steel, plastic or an alloy, the choice of material primarily depending on the aggressiveness of the medium to be treated.
  • the flow velocities are in any case chosen from the design in such a way that damage by cavitation or the like is virtually impossible.
  • the exit velocity of the liquid from the annular gap can be artificially increased by superimposing a swirl on the radial flow direction, which is generated within the chamber 5 or within the annular chamber 32.
  • a swirl is generated by guide bodies in the acceleration sections, which, with the appropriate design, have an almost loss-free effect.
  • FIG. 4 shows a further exemplary embodiment of a device according to the invention.
  • the function is similar to the exemplary embodiment according to FIG. 1, only the supply of the liquid and the air supply to a lower air chamber 60 are designed differently.
  • the diffuser there are therefore no reference numerals in FIG. 4, since the description thereof would represent a repetition.
  • the upper part 52 and the lower part 53 of a housing 51 are each provided with an upper inlet 54 and a lower inlet 55, which together form a channel 50 in the vicinity of an annular gap 56.
  • the channel 50 is monotonically decreasing in diameter towards the annular gap 56, so that the liquid flowing in with the same pressure in the inlets 54 and 55 is accelerated in this area. It then enters the diffuser at high speed from the annular gap 56 past the openings 58.
  • the upper housing part 52 is provided with a feed line 61 for the gas, in particular for air.
  • a feed line 61 for the gas in particular for air.
  • spacers 57 which at these points hinder the free escape of the liquid from the annular gap 56.
  • Liquid-free areas 62 form in the flow shadow of these spacers 57 and ensure the overflow of air from the upper air chamber 59 into the lower air chamber 60.
  • the flow is indicated schematically by dashed lines.
  • the exemplary embodiment according to FIG. 4 is used in cases in which a feed for the liquid from below to the device is possible without difficulty.
  • the exemplary embodiment according to FIG. 1 can also be used in this case, which is then installed in an upside-down position.
  • the appropriate routing or attachment of the supply lines 11 and 12 for the air can be selected accordingly by any person skilled in the art.
  • the liquid emerging from the respective annular gap 6, 33 or 56 normally emerges in a uniformly flowing manner without strong turbulence. With particularly wide annular gaps, however, turbulence can increasingly occur, which apparently promotes the absorption of gas immediately thereafter. If necessary, the diffuser inlet must then be slightly widened, that is to say converted into a type of catch constellation. Excellent gassing results have also been achieved with such devices according to the invention.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

Un dispositif sert à introduire de façon continue un gaz dans un liquide, dans le cadre d'une installation de flottation, de désencrage ou autres. Le liquide sort par un passage annulaire sans fin (6) ne comportant aucun obstacle intérieur tels que parois de délimitation ou autres, et entre après avoir absorbé le gaz dans un diffuseur radial (14), par où le liquide enrichi de bulles de gaz sort dans le récipient de traitement de l'installation. Pour cette raison, un seul dispositif de gazéification agencé centralement près du fond du récipient suffit pour des cuves de traitement à section transversale circulaire. Un écoulement tourbillonnaire peut être obtenu par une déviation correspondante au niveau du diffuseur ou de la première chambre du liquide dans le passage annulaire.

Claims (14)

1. Dispositif d'introduction continue d'un gaz, notamment de l'air, dans un liquide, notamment de l'eau, pour une activation d'eau, une préparation d'eau, une flottation, des installations de désencrage ou analogues, comportant un dispositif distributeur de liquide, agencé comme un intervalle annulaire (6; 33; 56) de forme sensiblement circulaire et ayant un plan central orienté horizontalement, au moins une ouverture de sortie de gaz (8; 35; 58) incluant un conduit d'admission, et un diffuseur (14, 43), comportant le même plan central orienté horizontalement et situé en aval du dispositif distributeur, des orifices (8; 35; 58) en forme d'anneaux circulaires d'une chambre à air respective (9, 10; 34; 59, 60) débouchant dans l'ouverture de sortie de gaz au-dessus et en dessous de l'intervalle annulaire, caractérisé en ce que l'intervalle annulaire (6; 33; 56) du dispositif distributeur constitue la sortie d'une chambre (5, 32; 50) en forme de buse dont la section se rétrécit de façon monotone sur la distance entre un conduit d'admission et l'intervalle annulaire (6; 33; 56) et en ce que le diffuseur (14, 43) comporte deux surfaces de délimitation (17, 18; 40,41) placées l'une en regard de l'autre et respectivement des deux côtés du liquide sortant de l'intervalle annulaire (6; 33; 56), leur espacement mutuel étant choisi, sur un filet d'écoulement de l'intérieur vers l'extérieur en tenant compte du périmètre croissant du filet d'écoulement lorsque le diamètre augmente, de telle sorte que le diffuseur ayant en vue en plan une forme circulaire et en section droite une forme conique, comporte un élargissement total qui corresponde à celui d'un diffuseur de forme circulaire ayant un angle d'ouverture de 2° à 6°.
2. Dispositif selon la revendication 1, caractérisé en ce qu'il est prévu entre les surfaces de délimitation (40,41) du diffuseur (43) des voiles d'espacement (43) de faible résistance.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que chaque chambre à air (9, 10; 34; 50; 60) recouvre au moins une partie du côté arrière de la surface de délimitation associée (17, 18; 40,41) et les voiles d'espacement servant à relier les deux chambres à air sont réalisés creux.
4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que les voiles d'espacement (42) sont légèrement incurvés pour produire un tourbillon.
5. Dispositif selon une des revendications 1 à 4, caractérisé en ce qu'un conduit d'admission (36) est prévu pour la chambre à air supérieure (34) et les deux chambres à air (34) sont permutables par l'intermédiaire d'un conduit de liaison (37).
6. Dispositif selon une des revendications 1 à 5, caractérisé en ce que l'intervalle annulaire (33) des chambres fait partie d'une chambre annulaire (33) comportant plusieurs conduits d'alimentation répartis uniformément sur la périphérie.
7. Dispositif selon une des revendications 1 à 5, caractérisé en ce qu'un conduit d'admission (4) de liquide est relié au côté supérieur ou au côté inférieur de la chambre (5).
8. Dispositif selon la revendication 7, caractérisé en ce que le fond (21) de la chambre (5) a une forme d'auget annulaire.
9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que le fond (21) de la chambre (5), y compris la partie inférieure de délimitation de l'intervalle annulaire (5), est fixé de façon séparable.
10. Dispositif selon une des revendications 7 à 9, caractérisé en ce qu'il est prévu à l'intérieur de la chambre (5) des corps directeurs qui créent un tourbillon dans l'écoulement de liquide le long de l'axe central.
11. Dispositif selon la revendication 1, caractérisé en ce que les surfaces de délimitation du diffuseur sont maintenues espacées l'une de l'autre à l'aide de plusieurs conduits de liaison entre les chambres à air supérieure et inférieure.
12. Dispositif selon une des revendications 1 à 5, caractérisé en ce que l'intervalle annulaire (56) du dispositif distributeur constitue la sortie d'un canal (50) se composant de deux chambres et auquel est relié un conduit respectif d'admission de liquide (54, 55) sur le côté supérieur et sur le côté inférieur.
13. Dispositif selon la revendication 12, caractérisé en ce que le canal (50) est étranglé de façon monotone sur chaque côté d'admission d'écoulement jusqu'à l'intervalle annulaire (56).
14. Dispositif selon une des revendications 1,6, 7 ou 12, caractérisé en ce que l'intervalle annulaire (56) de la chambre (50) est fermé en des zones prédéterminées par des pièces d'espacement (57) ou par des pièces de fixation, en ce qu'un conduit d'admission d'air (61) aboutit seulement à une des chambres à air (59) et en ce que les zones des orifices (58) de forme circulaire qui sont abritées de l'écoulement par les pièces d'espacement (57) servent de zones de décharge de l'air dans l'autre chambre à air (60).
EP85905619A 1984-10-27 1985-10-28 Dispositif d'introduction d'un gaz dans un liquide Expired EP0198073B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843439464 DE3439464A1 (de) 1984-10-27 1984-10-27 Vorrichtung zur einbringung eines gases in eine fluessigkeit
DE3439464 1984-10-27

Publications (2)

Publication Number Publication Date
EP0198073A1 EP0198073A1 (fr) 1986-10-22
EP0198073B1 true EP0198073B1 (fr) 1989-09-27

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EP85905619A Expired EP0198073B1 (fr) 1984-10-27 1985-10-28 Dispositif d'introduction d'un gaz dans un liquide

Country Status (5)

Country Link
US (1) US4743408A (fr)
EP (1) EP0198073B1 (fr)
JP (1) JPS62500576A (fr)
DE (2) DE3439464A1 (fr)
WO (1) WO1986002577A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI82436C (fi) * 1988-03-10 1991-03-11 Outokumpu Oy Anordning foer bildande av smao bubblor i en vaetska.
GB9213513D0 (en) * 1992-06-25 1992-08-12 Thames Water Utilities A nozzle
US5720551A (en) 1994-10-28 1998-02-24 Shechter; Tal Forming emulsions
DE19950600C2 (de) * 1999-10-21 2003-09-18 K & S Kali Gmbh Vorrichtung zur Begasung einer Flotationstrübe in einer pneumatischen Flotationszelle
CN1323040C (zh) * 2003-12-23 2007-06-27 西安建筑科技大学 多功能扬水曝气器
AT501976B1 (de) * 2005-05-25 2007-03-15 Andritz Ag Maschf Vorrichtung zur flotation einer flüssigkeit
US9393863B2 (en) * 2014-02-14 2016-07-19 Ford Global Technologies, Llc Fuel filler spud diffuser

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE166309C (fr) *
CH490108A (de) * 1969-01-28 1970-05-15 Kerag Kesselschmiede App Und M Vorrichtung zum Vermischen von strömungsfähigen Medien
US3946948A (en) * 1974-10-18 1976-03-30 Grangesbergs Industrivaru Ab Ejector
NO136638C (no) * 1974-11-20 1977-10-12 Patents & Dev As Anordning ved vertikal ledning (drop-line)
FR2397870A1 (fr) * 1977-07-18 1979-02-16 Coorens Antoine Appareils a jet pour l'aspiration, la compression et le melange de fluides
DE3008476A1 (de) * 1980-03-05 1981-09-17 Bayer Ag, 5090 Leverkusen Verfahren zur flotation und verwendung von trichterduesen zur flotation
DE3015788C2 (de) * 1980-04-24 1982-07-29 E. & M. Lamort S.A., 51300 Vitry-le-François, Marne Flotationsvorrichtung zum Deinken von Faserstoffsuspensionen
US4282172A (en) * 1980-09-11 1981-08-04 Howe-Baker Engineers, Inc. Gas to liquid diffuser

Also Published As

Publication number Publication date
DE3439464A1 (de) 1986-05-07
US4743408A (en) 1988-05-10
WO1986002577A1 (fr) 1986-05-09
JPS62500576A (ja) 1987-03-12
DE3573217D1 (en) 1989-11-02
EP0198073A1 (fr) 1986-10-22

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