DE2546579A1 - Continuous sepn. of oil-in-water emulsions - by ultrafiltration with subsidiary oil separator working in parallel - Google Patents

Continuous sepn. of oil-in-water emulsions - by ultrafiltration with subsidiary oil separator working in parallel

Info

Publication number
DE2546579A1
DE2546579A1 DE19752546579 DE2546579A DE2546579A1 DE 2546579 A1 DE2546579 A1 DE 2546579A1 DE 19752546579 DE19752546579 DE 19752546579 DE 2546579 A DE2546579 A DE 2546579A DE 2546579 A1 DE2546579 A1 DE 2546579A1
Authority
DE
Germany
Prior art keywords
oil
subsidiary
emulsion
parallel
ultrafiltration
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.)
Pending
Application number
DE19752546579
Other languages
German (de)
Inventor
Wolfgang Von Dr Ing Preen
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.)
Preen wolfgang Von dr-Ing
Original Assignee
Preen wolfgang Von dr-Ing
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 Preen wolfgang Von dr-Ing filed Critical Preen wolfgang Von dr-Ing
Priority to DE19752546579 priority Critical patent/DE2546579A1/en
Publication of DE2546579A1 publication Critical patent/DE2546579A1/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08Thickening liquid suspensions by filtration
    • B01D17/085Thickening liquid suspensions by filtration with membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/145Ultrafiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/18Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The process uses semipermeable membranes for ultra-filtration. The membranes are permeable w.r.t. water molecules and impermeable w.r.t. oil molecules. In the novelty, a subsidiary stream of the emulsion is removed from the holding tank and a large proportion of the oil is sepd. from this subsidiary stream in a process operating in parallel with the ultrafilter. The subsidiary separator may employ chemical, physical or chemico-physical sepn. techniques. The residual emulsion is returned from the subsidiary separator to the common holding tank. Continuous operation is ensured with less equipment than is required by prior art process employing subsidiary sepn.

Description

Verfahren zum Spalten von Öl-in-Wasser-EmulsionenProcess for breaking oil-in-water emulsions

Unter den bekannten Verfahren zum Spalten von Ö1-in-Wasser-Emulsionen zeichnet sich das.U-rafiltrationsverfahren dadurch aus, daß es ohne Zusatz von Chemikalien mit verhältnismäßig geringentEnerg}ekosten arbeitet und ein sehr reines, den gesetzlichen Vorschriften entsprechendes Abwasser liefert. Diesen Vorzügen stehen als Nachteile gegenüber, daß das Ultrafiltrationsverfahren nicht kontinuierlich, sondern nur chargenweise betrieben werden kann, und daß das der Emulsion entzogene Öl noch sehr viel Wasser - in der Größenordnung von 50 Prozent - enthält, was eine Nachverdampfung in einer separaten Anlage erforderlich macht.Among the known methods for breaking oil-in-water emulsions Das.U-rafiltration process is characterized by the fact that it does not require the addition of chemicals works with relatively low energy costs and a very pure, legal one Provides waste water in accordance with regulations. These advantages stand out as disadvantages opposed to the fact that the ultrafiltration process is not continuous, but only batchwise can be operated, and that the oil withdrawn from the emulsion still has a great deal of water - in the order of 50 percent - contains what a re-evaporation in one requires a separate system.

Zur Ermöglichung eines kontinuierlichen Betriebes ist vorgeschlagen worden (Patentanmeldung P 25 28 990), die in den Kreislauf des TTltrafilters eingespeiste Emulsion vorzuentölen und dem Kreislauf kontinuierlich oder in Intervallen einen angemessenen Anteil der durch das Ausfiltern von Wasser im TTltrafilter mit Öl angereicherten Emulsion zu entnehmen, zu entölen und einen entsprechenden Anteil vorentölter Emulsion wieder in den Kreislauf einzubringen.It is proposed to enable continuous operation been (patent application P 25 28 990), which fed into the circuit of the TTltrafilters Pre-de-oiling the emulsion and adding it to the circuit continuously or at intervals appropriate proportion of the oil enriched by filtering out water in the TTltrafilter To remove the emulsion, to remove oil and a corresponding portion of the previously oiled emulsion to be reintroduced into the cycle.

Das Vorentölen der in den Emulsionskreislauf einzuspeisenden Emulsion und das gleichzeitige Entölen der über den U-?ilterkreislauf mit Öl angereicherten Emulsion bedingt entweder eine abwechselnde Benutzung der zusätzlichen Trenneinrichtung fiir diese beiden Aufgaben, oder aber es müssen zwei Trenneinrichtungen dafür vorgesehen werden.The pre-de-oiling of the emulsion to be fed into the emulsion circuit and the simultaneous de-oiling of those enriched with oil via the filter circuit emulsion requires either an alternating use of the additional separating device for these two tasks, or two separating devices must be provided for this will.

Der Erfindung liegt die Aufgabe zugrunde, ein kontinuierlich betreibbares Verfahren zum Spalten von Öl-in-Wasser-Emulsionen unter Verwendung des Ultrafiltrationsverfahrens zu entwickeln, welches zu seiner Durchführung einen kleineren apparativen Aufwand benötigt, als das Verfahren gemäß der benannten Voranmeldung. Dies wird erfindvnesffemäß dadurch erreicht, daß in einem dsm Kreislauf des U#trafilters para#le# geschalteten Kreislauf, dem Kreislaufbehälter ein Teil strom entnommen, das in diesem enthaltene Öl in einer an sich bekannten, chemisch, physikalisch oder kombiniert chemischphysikalisch arbeitenden Trenneinrihtung weitgehend abgeschiden und die verbleibende ölhaltige Restemulsion wieder dem gemeinsamen Kreislaufbehälter zuge f iihrt wird.The invention is based on the object of a continuously operable Process for breaking oil-in-water emulsions using the ultrafiltration process to develop, which requires a small amount of equipment for its implementation required than the procedure according to the named pre-registration. This becomes inventive achieved in that in a dsm circuit of the U # trafilters para # le # switched Circuit, a part of the current contained in this is taken from the circuit container Oil in a per se known, chemically, physically or combined chemically and physically working Trenneinrihtung largely separated and the remaining oil-containing Residual emulsion is fed back to the common circulation tank.

Gemäß der beigefügten Schemazeichnung wird die zu spaltende Emulsion einem Kreislaufbehälter 1 iiber eine Leitung 2 zugeführt. Ein Niveauregler 3 begrenzt die zugeführte Flüssigkeitsmenge. Eine Pumpe 4 fördert die zu spaltende Emulsion aus dem Kreislaufbehälter 1 durch ein Ultrafilter 5, in dem ein Teil des in der Emulsion enthaltenen Wassers ausgeschieden und in einen Behälter 6 bzw. direkt in einen Abwasserkanal abgeleitet wird. Die durch das Ausfiltern von Wasser mit Öl angereicherte Emulsion fließt ilber eine Leitung 7 zurück in den Kreislaufbehälter 1.According to the attached schematic drawing, the emulsion to be split is a circulation tank 1 via a line 2 is supplied. A level controller 3 is limited the amount of liquid supplied. A pump 4 conveys the emulsion to be split from the circulation tank 1 through an ultrafilter 5, in which part of the in the Emulsion contained water excreted and in a container 6 or directly in a sewer is derived. The by filtering out water with oil Enriched emulsion flows via a line 7 back into the circulation tank 1.

Eine weitere Pumpe 8 fördert einen Teilstrom über eine Leitung 9 aus dem Kreislaufbehälter 1 in eine Entölungseinrichtung 10, die weitgehend entwässertes Öl in einen Behälter 11 abscheidet. Die nach der Abscheidung des Öles verbleibende ölhaltige Restemulsion fließt aus der Entölungseinrichtung 10 über eine Leitung 12 zurück in den Kreislaufbehälter 1.Another pump 8 conveys a partial flow one Line 9 from the circulation tank 1 in a de-oiling device 10, which largely dehydrated oil separates into a container 11. The one after the separation of the oil any remaining oil-containing residual emulsion flows over from the de-oiling device 10 a line 12 back into the circulation tank 1.

Die Entölungseinrichtung kann von beliebiger Art sein, es kann dafür ein chemisches, oder ein physikalisches oder alxch ein kombiniertes Verfahren zur Anwendung gelangen. Die beiden gemeinsam zur Anwendung kommenden Verfahren ergänzen und beeinflußen sich gegenseitig in ihrer Wirkung und ermöglichen so eine kontinuierliche Arbeitsweise, derzufolge die Apparatur für die in einen Betrieb anfallende bestimmte Menge zu spaltender Emulsion kleiner gehalten werden kann als bei einem einstufigen Verfahren.The de-oiling device can be of any type, it can be for this a chemical, or a physical or alxch a combined process for Application. Supplement the two procedures that are used together and influence each other in their effect and thus enable a continuous Mode of operation, according to which the equipment for the particular one that arises in a company The amount of emulsion to be split can be kept smaller than with a single-stage Procedure.

Patentanspruch: Claim:

Claims (1)

Patentans pnlch: Verfahren zum Spalten von Öl-in-Wasser-Emulsionen mittels Ultrafiltration unter Verwendung semipermeabler Membranen mit einer Durchlässigkeit für Wassermoleküle und Undurchlässigkeit für Ölmoleküle, dadurch gekennzeichnet, daß in einem dem Kreislauf des TTltrafilters parallel geschalteten Kreislauf dem Kreislaufbehälter ein Teilstrom entnommen, das in diesem enthaltene Öl in einer an sich bekannten chemisch, physikalisch oder kombiniert chemisch-physikalisch arbeitenden Trenneinrichtung weitgehend abgeschieden und die verbleibende ölhaltige Restemulsion wieder dem gemeinsamen Kreislaufbehälter zugeführt wird.Patentans pnlch: Process for splitting oil-in-water emulsions by means of ultrafiltration using semi-permeable membranes with a permeability for water molecules and impermeability for oil molecules, characterized in that in a circuit connected in parallel to the circuit of the TTltrafilters Circulation tank removed a partial stream, the oil contained in this in a known chemically, physically or combined chemically-physically working Separating device largely separated and the remaining oil-containing residual emulsion is fed back to the common circulation tank.
DE19752546579 1975-10-17 1975-10-17 Continuous sepn. of oil-in-water emulsions - by ultrafiltration with subsidiary oil separator working in parallel Pending DE2546579A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752546579 DE2546579A1 (en) 1975-10-17 1975-10-17 Continuous sepn. of oil-in-water emulsions - by ultrafiltration with subsidiary oil separator working in parallel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752546579 DE2546579A1 (en) 1975-10-17 1975-10-17 Continuous sepn. of oil-in-water emulsions - by ultrafiltration with subsidiary oil separator working in parallel

Publications (1)

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DE2546579A1 true DE2546579A1 (en) 1977-09-01

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4227999A (en) * 1978-02-24 1980-10-14 Heinrich Frings Gmbh & Co. Kg Ultrafiltration process and apparatus
US4265642A (en) * 1979-03-01 1981-05-05 Abcor, Inc. Process of removal of solvent vapors
EP0312347A1 (en) * 1987-10-15 1989-04-19 Separation Dynamics Inc Separation of water from hydrocarbons and halogenated hydrocarbons
DE3831976A1 (en) * 1988-09-21 1990-03-29 Henkel Kgaa METHOD FOR DISPOSAL OF USED OIL / WATER EMULSIONS
EP0557803A1 (en) * 1992-02-28 1993-09-01 ULTRAFILTER GmbH Separation device for oil/water mixtures
FR2692164A1 (en) * 1992-06-16 1993-12-17 Elf Antar France Process for ultrafiltration of stabilized emulsions
EP0706811A1 (en) * 1994-10-14 1996-04-17 ZEPPELIN TECHNOLOGIE GmbH Process for separating fat and oil from waste water containing tensides, separation installation and device for breaking an emulsion in a separation installation
EP0713719A3 (en) * 1994-11-25 1996-06-05 Hellmers Herm J Gmbh
EP0730894A2 (en) * 1995-03-09 1996-09-11 HYDAC FILTERTECHNIK GmbH Phase separation process and apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4227999A (en) * 1978-02-24 1980-10-14 Heinrich Frings Gmbh & Co. Kg Ultrafiltration process and apparatus
US4265642A (en) * 1979-03-01 1981-05-05 Abcor, Inc. Process of removal of solvent vapors
EP0312347A1 (en) * 1987-10-15 1989-04-19 Separation Dynamics Inc Separation of water from hydrocarbons and halogenated hydrocarbons
DE3831976A1 (en) * 1988-09-21 1990-03-29 Henkel Kgaa METHOD FOR DISPOSAL OF USED OIL / WATER EMULSIONS
EP0361201A1 (en) * 1988-09-21 1990-04-04 Henkel Kommanditgesellschaft auf Aktien Process to dispose of spent oil-water emulsions
WO1990003332A1 (en) * 1988-09-21 1990-04-05 Henkel Kommanditgesellschaft Auf Aktien A process for disposing of used oil/water emulsions
EP0557803A1 (en) * 1992-02-28 1993-09-01 ULTRAFILTER GmbH Separation device for oil/water mixtures
FR2692164A1 (en) * 1992-06-16 1993-12-17 Elf Antar France Process for ultrafiltration of stabilized emulsions
WO1993025298A1 (en) * 1992-06-16 1993-12-23 Elf Antar France Process for ultrafiltration of stabilized emulsions
EP0706811A1 (en) * 1994-10-14 1996-04-17 ZEPPELIN TECHNOLOGIE GmbH Process for separating fat and oil from waste water containing tensides, separation installation and device for breaking an emulsion in a separation installation
EP0713719A3 (en) * 1994-11-25 1996-06-05 Hellmers Herm J Gmbh
EP0730894A2 (en) * 1995-03-09 1996-09-11 HYDAC FILTERTECHNIK GmbH Phase separation process and apparatus
EP0730894A3 (en) * 1995-03-09 1997-11-05 HYDAC FILTERTECHNIK GmbH Phase separation process and apparatus

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