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WO1993011846A1 - Procede et dispositif de traitement d'emulsions huile/eau - Google Patents

Procede et dispositif de traitement d'emulsions huile/eau Download PDF

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Publication number
WO1993011846A1
WO1993011846A1 PCT/DE1992/001042 DE9201042W WO9311846A1 WO 1993011846 A1 WO1993011846 A1 WO 1993011846A1 DE 9201042 W DE9201042 W DE 9201042W WO 9311846 A1 WO9311846 A1 WO 9311846A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
ultra
water emulsion
filtration
feed pump
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.)
Ceased
Application number
PCT/DE1992/001042
Other languages
German (de)
English (en)
Inventor
Kurt Herrmann
Manfred Schleifenheimer
Karl-Heinz Eckhold
Anita Hess
Antje Endter
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.)
UMWELT KOLLEG PRISMA GmbH
Original Assignee
UMWELT KOLLEG PRISMA 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 UMWELT KOLLEG PRISMA GmbH filed Critical UMWELT KOLLEG PRISMA GmbH
Publication of WO1993011846A1 publication Critical patent/WO1993011846A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/06—Working-up used lubricants to recover useful products ; Cleaning by ultrafiltration or osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • B01D17/085—Thickening liquid suspensions by filtration with membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/16—Feed pretreatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment

Definitions

  • the invention relates to a method and a device for working up oil-water emulsions using ultra-filtration, in which the oil-water emulsion by a feed pump from a
  • the circulation container is drawn off, fed to an ultra-filtration device for the purpose of removing the filtrate and then subsequently returned to the circulation container.
  • the workup involves separating the oil-water emulsion into an aqueous fraction and one
  • Oil concentration where the aqueous fraction can be derived in the usual way or included in a recycling process provided below.
  • the ultrafilter a gas, also in the form of air, is supplied and this is expanded to ambient pressure after the membrane separation unit.
  • This measure is intended to suppress the formation of deposits on the membrane surface or to open up and remove existing deposits.
  • the purpose of the expansion of the solution stream to ambient pressure is to increase the volume of the gas bubbles adhering to the oil particles in order to be able to remove them in the form of foam in later separation apparatus.
  • the object of the invention is accordingly to develop a method and a device for the regeneration of a circulating oil-water emulsion in which the ultra-filtration for working up the oil-water emulsion is more complete and with an increased cleaning and separating effect is feasible.
  • the object is achieved according to the invention in that the liquid flow after leaving the feed pump is regulated by a pressure control element connected to the feed circuit
  • Aerators with finely divided gas are interspersed continuously or periodically according to time intervals and, after the filtrate has been separated off, the pressure in the ultrafiltration device is expanded in a pressure relief device assigned to the circulation container.
  • a device is used according to claim 2, in which the aerator bringing the finely divided gas into the delivery circuit is switched on between the delivery pump and the ultrafiltration device in the delivery circuit, and is made of porous material, preferably porous ceramic, and in which the Circulation tank is assigned a relaxation part, which is formed from a housing that is completely sealed off from the oil-water emulsion in the circulation tank, an open-top, funnel-shaped housing that widens upwards, the upper edge of the housing closing approximately with the liquid level.
  • An expedient embodiment of the method according to the invention is contained in claim 3, according to which the concentrated oil-water emulsion returned to the circulation tank through a plurality of air curtains introduced at right angles to the direction of flow with finely divided air bubbles through which the oil-water emulsion flows on its way to the suction line , is relaxed.
  • the method according to the invention and the device used to carry out the method are particularly distinguished from the prior art. that due to the enforcement of the liquid flow with finely divided gas and the regulated supply of the gas after leaving the feed pump and in front of the filter unit, the flow rate and the energy consumption are influenced favorably.
  • the fine distribution of the gas in the liquid flow has the effect that when the membrane surfaces in the filter unit flow over the effective filtration area is larger than in the liquid flow mixed with larger gas bubbles according to the methods of the prior art.
  • the arrangement according to the invention of a funnel-shaped housing in the circulation container for the purpose of relaxing the returned concentrated oil-water emulsion has the advantage that the oil-water emulsion flowing into the funnel-shaped housing at the lower end due to the gas bubbles having a small diameter the deposition of oil on the surface is favorably influenced.
  • the oil-water emulsion 3 to be worked up is drawn off from a circulation container 1 designed in a known manner and serving as a gravity separator via a suction line 4 and fed to the ultra-filtration device 6 via an aerator 5 arranged after the pump 2.
  • the aerator 5, which can be regulated via a pressure control element, consists essentially of porous material, preferably in the form of porous ceramic, through which a gas, such as air, is pressed into the delivery circuit of the oil-water emulsion 3 and the liquid dissolves there.
  • the gas supply in the delivery circuit can be carried out continuously or periodically at time intervals, the periodic gas supply having the advantage that at periodic intervals the flow over the membrane surfaces of the
  • Filtration area is larger, which leads to an increase in filtration performance.
  • Filtrate is excreted in the form of an aqueous fraction, passed into an expansion part assigned to the circulation tank 1.
  • the relaxation part is housed in the circulation container 1, sealed from it all around and formed from a funnel-shaped housing 7 which is open at the top and widens upwards, the upper edge 8 of which approximately closes with the liquid level.
  • the liquid stream flowing into the funnel-shaped housing 7 at the lower end and coming from the ultrafiltration device 6 has a low flow rate
  • the diameter of the gas bubbles is interspersed so that the gas bubbles moving at a low buoyancy speed attach to the free oil droplets present in the liquid and these at ever decreasing speeds to the surface of the oil-water emulsion 3 in the circulation container 1 be transported.
  • Another possibility for transporting free oil droplets from the concentrated oil-water emulsion 3 returned to the circulation tank 1 to the surface of the liquid in the circulation tank 1 is that the oil-water emulsion 3 is on its way to Suction line 4 passes through one or more finely divided air curtains introduced transversely to the direction of flow.
  • Oil droplets contained in the emulsion are captured by the rising air bubbles and moved to the surface, from which the free oil can then be sucked off.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physical Water Treatments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Un procédé et un dispositif permettent de recycler par ultra-filtration des émulsions (3) huile/eau. L'émulsion huile/eau (3) est soutirée d'un réservoir de mise en circulation (1) par une pompe à refoulement (2), est amenée à une unité d'ultra-filtration (6), où le filtrat en est extrait, puis est ramenée au réservoir de mise en circulation (1). L'objet de l'invention est d'améliorer le procédé d'ultra-filtration à des fins de traitement de l'émulsion huile/eau (3) et d'en accroître l'effet de purification et de séparation. A cet effet, un gaz finement réparti est mélangé en continu ou périodiquement à des intervalles déterminés au courant de liquide à la sortie de la pompe de refoulement (2) au moyen d'un aérateur (5) monté dans le circuit de refoulement et réglé par un élément régulateur de la pression. Le gaz se détend dans l'unité d'ultra-filtration (6) après séparation du filtrat, dans une partie de détente associée au réservoir de mise en circulation (1).
PCT/DE1992/001042 1991-12-19 1992-12-12 Procede et dispositif de traitement d'emulsions huile/eau Ceased WO1993011846A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141993A DE4141993C2 (de) 1991-12-19 1991-12-19 Verfahren und Vorrichtung zur Aufarbeitung von Öl-Wasser-Emulsionen mit geregelter Gaszufuhr
DEP4141993.6 1991-12-19

Publications (1)

Publication Number Publication Date
WO1993011846A1 true WO1993011846A1 (fr) 1993-06-24

Family

ID=6447507

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/001042 Ceased WO1993011846A1 (fr) 1991-12-19 1992-12-12 Procede et dispositif de traitement d'emulsions huile/eau

Country Status (2)

Country Link
DE (1) DE4141993C2 (fr)
WO (1) WO1993011846A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029390A1 (fr) * 1997-12-10 1999-06-17 Messer Griesheim Gmbh Procede et dispositif pour decomposer une emulsion aqueuse contenant de l'huile
CZ303674B6 (cs) * 2010-03-16 2013-02-20 Polínek@Vlastimil Zpusob regenerace odpadních vodných rezných emulzí a zarízení k provádení tohoto zpusobu
CN108355496A (zh) * 2018-05-16 2018-08-03 无锡格物环保技术有限公司 用于废乳化液处理的超滤循环罐

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325037A1 (de) * 1993-07-26 1995-02-02 Andreas Landmann Prozeßwasser-Recycling-Anlage
US6217770B1 (en) * 1998-08-14 2001-04-17 Atp International Apparatus and method for treatment of water
DE102009028162B4 (de) * 2009-07-31 2015-10-15 Eviola S.A. Wasseraufbereitung über Ultrafiltration
CN113262525B (zh) * 2021-05-20 2022-04-08 大连理工大学 一种连续水油分离装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766203A (en) * 1953-02-09 1956-10-09 Union Oil Co Water purification process and apparatus
FR2389400A1 (fr) * 1977-05-05 1978-12-01 Seri
DE3015313A1 (de) * 1979-05-02 1980-11-13 Wassertech Forschung Verfahren und vorrichtung zum aufarbeiten von oelemulsionen
DD148859A3 (de) * 1978-10-16 1981-06-17 Eberhard Friedrich Verfahren zur membranfiltration und vorrichtung zu deren durchfuehrung
DD260007A1 (de) * 1987-04-20 1988-09-14 Werkzeugmasch Forschzent Verfahren zum regenerieren einer im kreislauf gefuehrten verschmutzten oel-wasser-emulsion

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD251882A3 (de) * 1979-10-25 1987-12-02 Hanno Wenske Aufspalter zur trennung von emulsionen in wasseraufbereitungsanlagen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766203A (en) * 1953-02-09 1956-10-09 Union Oil Co Water purification process and apparatus
FR2389400A1 (fr) * 1977-05-05 1978-12-01 Seri
DD148859A3 (de) * 1978-10-16 1981-06-17 Eberhard Friedrich Verfahren zur membranfiltration und vorrichtung zu deren durchfuehrung
DE3015313A1 (de) * 1979-05-02 1980-11-13 Wassertech Forschung Verfahren und vorrichtung zum aufarbeiten von oelemulsionen
DD260007A1 (de) * 1987-04-20 1988-09-14 Werkzeugmasch Forschzent Verfahren zum regenerieren einer im kreislauf gefuehrten verschmutzten oel-wasser-emulsion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN Bd. 12, Nr. 6, Dezember 1979, TOKYO Seiten 454 - 459 YUJI SATO ET AL. 'REMOVAL OF EMULSIFIED OIL PARTICLES BY DISSOLVED AIR FLOTATION' *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029390A1 (fr) * 1997-12-10 1999-06-17 Messer Griesheim Gmbh Procede et dispositif pour decomposer une emulsion aqueuse contenant de l'huile
US6413430B1 (en) * 1997-12-10 2002-07-02 Messer Griesheim Gmbh Method and device for demulsifying an oil-containing aqueous emulsion
CZ303674B6 (cs) * 2010-03-16 2013-02-20 Polínek@Vlastimil Zpusob regenerace odpadních vodných rezných emulzí a zarízení k provádení tohoto zpusobu
CN108355496A (zh) * 2018-05-16 2018-08-03 无锡格物环保技术有限公司 用于废乳化液处理的超滤循环罐

Also Published As

Publication number Publication date
DE4141993C2 (de) 1996-01-11
DE4141993A1 (de) 1993-07-08

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