WO1996041669A1 - Procede et dispositif de retrait des impuretes d'un liquide - Google Patents

Procede et dispositif de retrait des impuretes d'un liquide Download PDF

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Publication number
WO1996041669A1
WO1996041669A1 PCT/EP1996/002473 EP9602473W WO9641669A1 WO 1996041669 A1 WO1996041669 A1 WO 1996041669A1 EP 9602473 W EP9602473 W EP 9602473W WO 9641669 A1 WO9641669 A1 WO 9641669A1
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WO
WIPO (PCT)
Prior art keywords
liquid
plates
plate
flow
inclination
Prior art date
Application number
PCT/EP1996/002473
Other languages
German (de)
English (en)
Inventor
Thomas Prass
Jörg Friedrich GREBER
Original Assignee
Parzival Beteiligungen Ag
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 Parzival Beteiligungen Ag filed Critical Parzival Beteiligungen Ag
Publication of WO1996041669A1 publication Critical patent/WO1996041669A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0006—Settling tanks provided with means for cleaning and maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0045—Plurality of essentially parallel plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0069—Making of contact surfaces, structural details, materials therefor
    • B01D21/0072—Means for adjusting, moving or controlling the position or inclination of the contact surfaces, e.g. for optimising the particle-liquid separation, for removing the settled particles, for preventing fouling

Definitions

  • the invention relates to a method for removing contaminants from a liquid according to the preamble of claim 1.
  • the invention further relates to a device for removing contaminants from a liquid, which is suitable for carrying out the method.
  • Liquids are obtained in many technical processes which contain a large number of different impurities. In order to be able to use these working fluids repeatedly, they have to be cleaned.
  • the contaminated liquids are, for example, cooling lubricant suspensions, cooling and lubricating oils in metalworking or suspensions of soil-rich water in soil remediation. These liquids mostly consist of costly and environmentally harmful substances, so that efforts are made to clean these liquids as well as possible and to reuse them.
  • cooling lubricant emulsions which contain greasy and lubricating components, in particular metal soaps, are to be cleaned.
  • the liquid contaminants lead, among other things, to a sticking together of the pores of the filter cloths, so that they have to be exchanged frequently in order to maintain a desired performance of the filter system.
  • centrifuge Another method of removing contaminants from liquids is performed in a centrifuge.
  • the centrifuge creates an artificially increased gravitational field in the liquid and thereby separates the suspension therein into heavy, medium and light components. In the outlet of the centrifuge, it is possible to remove the different fractions of the contaminants separately.
  • a disadvantage of this method is that the heavy impurities in the liquid are very strongly compressed by the high centrifugal forces and their removal from the centrifuge is thereby made more difficult.
  • the centrifuges used for this method also have a complex construction.
  • the object of the invention is to provide a method and a device for removing impurities from a liquid, with which the removal of impurities can be carried out even more effectively and the cleaning of the plates after longer operating times and in a simple manner is made possible.
  • FIG. 1 shows a front view of a plate device of the device for removing contaminants from a liquid
  • FIG. 2 shows a side view of the plate device shown in FIG. 1;
  • Fig. 3 is a partial sectional view of the front of the plate device shown in Fig. 1 in the tilted position;
  • FIG. 4 shows a side view of a further embodiment of the device for removing contaminants from a liquid
  • FIG. 5 shows a front view of the device shown in FIG. 4;
  • FIG. 6 shows a schematic illustration of the plate arrangement shown in a plate device
  • FIG. 7 shows a spatial representation of the plate arrangement according to a further embodiment of the device.
  • Figures 1 to 3 show a device for performing the method according to the invention for removing contaminants from a liquid.
  • the device has a plate device with a lower frame 1 and an upper frame 2, which are displaceable relative to one another.
  • a plate pack 3 is held between the frames with a plurality of plates 4 which are parallel to one another and are pivotably mounted on the frames 1, 2 on the underside and on the top.
  • Fig. 1 shows the plate device in a position in which the frames 1, 2 are aligned perpendicular to each other and Fig. 3 shows the position of the frame in its operating position in which the plates are aligned inclined to the vertical.
  • the respective outer plates 4 of the plate pack 3 are movably connected on both sides to the lower frame 1 and the upper frame 2 by means of articulated arrangements 5, so that the frames 1, 2 are movable allelogram-like to each other.
  • the inner and outer plates 4 of the plate pack 3 are pivotably mounted with their lower and upper edges in associated grooves 6 of the frames 1 and 2, respectively.
  • the grooves 6 have a triangular cross section.
  • FIG. 2 shows a side view of the plate device consisting of a plate pack, through which a flow F 0 of the liquid to be cleaned flows.
  • the device according to the invention also has a device (not shown in FIG. 2) for introducing the liquid to be cleaned, essentially horizontally and along the plate surfaces of the plate pack, as can be seen from the illustration in FIG. 2.
  • the plates 4 are preferably at a distance of 0.5 to 10 mm apart.
  • FIGS. 4 and 5 show a further exemplary embodiment of the invention, in which the plate device consists of a plurality of plate packs arranged one behind the other in the direction of flow of the liquid and having different angles of inclination.
  • the separation space in the plate device is divided into different areas which are matched to the different properties, in particular the rate of climb or descent, of the lighter and heavier impurities.
  • Corresponding studies have shown that a smaller angle of incidence oti to the vertical is advantageous for the preferred separation of speci fi c heavier particles from a liquid than for the Separation of specifically lighter impurities which require a larger setting angle ⁇ 2 (FIG. 6).
  • arrows are used to compare the distances that a particle located in the middle between two plates 4 has to store in order to reach one of the plate surfaces. Accordingly, the particles, ie, decrease at a considerably in comparison to the liquid 'greater density particularly heavy particles quickly. However, in the first, only a small angle with the perpendicular plate pack, these have to cover a longer distance to the lower plate surface. The particles behave similarly, which have a significantly lower density compared to the liquid, ie are particularly light. These particles will rise quickly, but have to travel a longer distance to the upper plate surface.
  • tapping devices can be installed at the points at which the partially cleaned streams Fl and F2 (FIG. 4) emerge from one plate pack and flow into the next, in order to extract partial quantities of the liquid with a certain cleaning quality ⁇ men.
  • the device according to the invention consists of a plate device with only one plate package of the type shown in FIGS. 1 to 3, the frames 1, 2 and only one plate 4 being shown schematically in FIG. 7 are shown.
  • the twisted position of the plates 4 is achieved according to this embodiment in that the upper frame 2 is rotated parallel to the lower frame 1 by a certain angle.
  • connection of the plates 4 ensures that the angle of inclination of the plates with respect to the perpendicular increases continuously in the direction of extension of the plate and in the direction of flow of the liquid.
  • a further increase in the compactness of the device according to the invention can be achieved by this construction.
  • the plates of the plate device are made of elastomeric materials, for example of rubber, which are installed in the frame 1, 2 under a certain pretension. It has been found that such plates have an effect, partly due to their specific surface tension, which promotes the agglomeration of the particles.
  • this particular embodiment of the invention allows the plates 4 to be tensioned and / or relaxed at suitable time intervals, in order to thereby advantageously remove particle deposits or incrustations from the plate surfaces.
  • a device for applying a cyclical stress curve to the elastic plates can be built into the device according to the invention, which device makes it possible to clean the plates in the installed state. This type of cleaning of the plates can be carried out not only during short breaks in operation of the device, but also during the cleaning operation of the liquid.
  • the invention is not limited to the advantageous embodiments described above, but extends to various combinations of the techniques shown above.
  • various combinations of plate packs can be used.
  • the second plate pack 4b and the third plate pack 4c can be designed in the manner of the embodiment shown in FIG. 7.
  • the invention also includes such an embodiment, in which the device comprises only a single plate pack, in which each plate initially extends in the direction of flow at a constant angle of inclination to the perpendicular and only at its rear end in the direction of flow according to the position shown in FIG. 7 shown is rotated so as to increase the inclination of the plates in the discharge area of the liquid.

Abstract

Le procédé décrit sert à retirer les impuretés d'un liquide. Selon ce procédé, on fait écouler le liquide entre les plaques d'un agencement de plaques sensiblement parallèles et inclinées par rapport à la verticale.
PCT/EP1996/002473 1995-06-08 1996-06-07 Procede et dispositif de retrait des impuretes d'un liquide WO1996041669A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995120975 DE19520975C2 (de) 1995-06-08 1995-06-08 Verfahren und Vorrichtung zum Entfernen von Verunreinigungen aus einer Flüssigkeit
DE19520975.3 1995-06-08

Publications (1)

Publication Number Publication Date
WO1996041669A1 true WO1996041669A1 (fr) 1996-12-27

Family

ID=7763953

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/002473 WO1996041669A1 (fr) 1995-06-08 1996-06-07 Procede et dispositif de retrait des impuretes d'un liquide

Country Status (2)

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DE (1) DE19520975C2 (fr)
WO (1) WO1996041669A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005004230A1 (de) * 2005-01-28 2006-08-03 Kolb, Frank R., Dr.-Ing. Selbsttätig-regulierender physikalisch-chemisch aktiver Lamellenabscheider
DE102008003128A1 (de) * 2008-01-02 2009-07-09 Andreas Kufferath Gmbh & Co. Kg Säulenflotationseinrichtung
DE102010003633B4 (de) * 2010-04-01 2017-07-27 Uft Umwelt- Und Fluid-Technik Dr. H. Brombach Gmbh Vorrichtung und Verfahren zum Klären von Abwasser von Sediment
CN112657236B (zh) * 2020-11-23 2022-06-10 湖南驰兴环保科技有限公司 一种水环保沉淀池用沉淀物处理结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172789A (en) * 1977-11-23 1979-10-30 Copef Process for clarifying liquids loaded with solid substances in suspension
FR2452950A1 (fr) * 1979-04-04 1980-10-31 Cellophane Sa Decanteur lamellaire
DE9308282U1 (de) * 1993-06-02 1993-08-19 Technopur Gmbh Plattenphasentrenner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752296C2 (de) * 1977-11-23 1983-10-20 COPEF Traitement des Eaux, Saint Maur Vorrichtung zum Klären einer mit suspendierten Feststoffteilchen beladenen Flüssigkeit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172789A (en) * 1977-11-23 1979-10-30 Copef Process for clarifying liquids loaded with solid substances in suspension
FR2452950A1 (fr) * 1979-04-04 1980-10-31 Cellophane Sa Decanteur lamellaire
DE9308282U1 (de) * 1993-06-02 1993-08-19 Technopur Gmbh Plattenphasentrenner

Also Published As

Publication number Publication date
DE19520975C2 (de) 1997-07-17
DE19520975A1 (de) 1996-12-12

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