EP0964733A2 - Colonne d'extraction a trois phases - Google Patents

Colonne d'extraction a trois phases

Info

Publication number
EP0964733A2
EP0964733A2 EP98906936A EP98906936A EP0964733A2 EP 0964733 A2 EP0964733 A2 EP 0964733A2 EP 98906936 A EP98906936 A EP 98906936A EP 98906936 A EP98906936 A EP 98906936A EP 0964733 A2 EP0964733 A2 EP 0964733A2
Authority
EP
European Patent Office
Prior art keywords
chambers
phase
extraction column
internals
chamber
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.)
Withdrawn
Application number
EP98906936A
Other languages
German (de)
English (en)
Inventor
Artak Eranosovich Kostanian
Werner BÄCKER
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of EP0964733A2 publication Critical patent/EP0964733A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0446—Juxtaposition of mixers-settlers
    • B01D11/0449—Juxtaposition of mixers-settlers with stationary contacting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0446—Juxtaposition of mixers-settlers
    • B01D11/0457—Juxtaposition of mixers-settlers comprising rotating mechanisms, e.g. mixers, mixing pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0446—Juxtaposition of mixers-settlers
    • B01D11/0465—Juxtaposition of mixers-settlers comprising vibrating mechanisms, radiations

Definitions

  • the invention is based on a three-phase extraction column with two chambers, the upper and lower parts of which are connected by connecting channels and have nozzles for the supply and discharge of the first and second disperse phases.
  • Such a multi-phase extractor can be used in chemical, hydrometallurgical, microbiological and other industries for the separation, extraction, concentration and purification of substances.
  • Apparatuses for carrying out processes of three-phase liquid extraction are known in the form of a two-chamber system, the two chambers being connected to one another in the upper part or having a porous partition.
  • the chambers are filled with a continuous phase, through which two dispensed
  • Phases that are not soluble in the continuous phase are passed through in the form of drops.
  • substances from a dispersed phase pass through the continuous phase (also called liquid membrane phase) into the other dispersed phase (extract phase), (see, for example, journal "Theoretical Foundations of Chemical Technology” 1984, p. 18 ; No.
  • the three-phase extraction column which consists of a first and a second chamber filled with the continuous phase (liquid membrane), comes closest to the proposed apparatus.
  • the chambers have devices for dispersing the respective phase and are connected to one another by overflows for the
  • Circulation connected to the continuous phase.
  • the overflows are designed in the form of tubes which connect the upper and lower parts of the chamber to one another.
  • the extractor is equipped with a connection for the supply and discharge of the provided the first and second dispersed phase.
  • the phase to be dispersed which is the starting solution (raffinate), and the solvent (extract phase) are each divided into droplets in the corresponding chamber by means of a dispersing device, which droplets move through the continuous phase. Due to the difference in density of the dispersions in the first and second chambers, the continuous phase is circulated through the upper and lower overflows, so that the substance to be extracted transfers from one chamber to the other and from the first phase to be dispersed to the second .
  • the disadvantage of the known three-phase extraction column is the high degree of axial mixing in the chambers, in particular in the chamber with countercurrent of the contacting phases, which means a reduction in efficiency in the sense of countercurrent extraction
  • the object of the invention is to increase the effectiveness of the three-phase extraction column.
  • the internals are designed as packs.
  • the internals can also be designed as perforated floors.
  • the internals are advantageously designed in the form of the stirring elements.
  • the chambers preferably have end separators which are connected by overflows.
  • a further development of the invention is characterized in that further stages of the same design connected in series are arranged below a first stage with two chambers.
  • the equipment of the chambers with internals which are designed as packings (ordered or unordered) or perforated bottoms, reduces the axial mixing of the circulating stream of the continuous phase, so that its flow behavior is approximately comparable to a plug cycle.
  • the effectiveness of the whole Mass transfer between the two chambers and between the first and second disperse phase increased considerably.
  • the installation of stirring or mixing elements (conventional stirrer, vibrating base, etc.) in one or both chambers also contributes to this.
  • the exchange area is also increased and the axial mixing of the respective dispersed phase is reduced.
  • Figures 1-2 show single-stage extraction columns.
  • a multi-stage column is shown in FIG.
  • the dispersion can also be carried out by a pulsation of the liquid are supported.
  • the internals in chamber 1 are designed in the form of rotating stirrers and in chamber 2 in the form of a disordered packing.
  • the chambers 1 are equipped with an ordered packing and the chambers 2 with perforated trays.
  • the three-phase extraction column basically consists of the first (1) and the second chamber 2, which are connected in their upper and lower part by connecting channels or overflows 2.
  • the chambers 1 and 2 have nozzles 4 and 5 for the feed and nozzles 6 and 7 for the discharge of the first and second disperse phase.
  • One or both chambers 1 and 2 are equipped with internals 8.
  • the chambers 1 and 2 of the three-phase extraction column have end separators 9 and 10, which are connected by connecting channels or overflows 3.
  • the chambers 1 in which the continuous and dispersed phase are conducted in countercurrent also have a separation zone 11 for the
  • the nozzles 4 and 5 for supplying the first and second phases to be dispersed can be provided with a distributor 12.
  • the three-phase extraction column works according to the following principle:
  • Chambers 1 and 2 are filled with the continuous phase.
  • the phases to be dispersed are fed to the chambers 1 and 2 through the nozzles 4 and 5 and optionally via the distributor 12.
  • the drops of the dispersed phases in the chambers 1 and 2 move up or down and coalesce in the final separators 9 and 10.
  • the process of dispersion and coalescence is repeated in each stage.
  • the dispersion of the phase to be dispersed is achieved by the distributors 12 and / or by internals in the form of stirring elements, sieve trays or vibrating trays (FIGS. 1 and 2).
  • the two disperse phases are removed from the extraction column by means of nozzles 6 and 7.
  • the three-phase extraction column can be used as a device for separating substances by means of liquid membranes.
  • the raffinate phase is then fed into one of the chambers 1 and 2 in the form of one of the disperse phases.
  • the substance to be extracted is extracted by the circulating continuous phase (which serves as a liquid membrane) and transferred to the other chamber, where the

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

L'invention concerne une colonne d'extraction à trois phases comprenant deux chambres (1, 2) reliées dans leur partie supérieure et leur partie inférieure par des trop-pleins (3), des tubulures (4, 5, 6, 7) pour l'alimentation et l'évacuation d'une première et d'une deuxième phase dispersée. Au moins une chambre comporte des pièces rapportées, notamment des garnitures ou des fonds perforés.
EP98906936A 1997-02-24 1998-02-09 Colonne d'extraction a trois phases Withdrawn EP0964733A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19707200 1997-02-24
DE19707200A DE19707200A1 (de) 1997-02-24 1997-02-24 Dreiphasen-Extraktionskolonne
PCT/EP1998/000693 WO1998037939A2 (fr) 1997-02-24 1998-02-09 Colonne d'extraction a trois phases

Publications (1)

Publication Number Publication Date
EP0964733A2 true EP0964733A2 (fr) 1999-12-22

Family

ID=7821228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98906936A Withdrawn EP0964733A2 (fr) 1997-02-24 1998-02-09 Colonne d'extraction a trois phases

Country Status (7)

Country Link
US (1) US6387255B1 (fr)
EP (1) EP0964733A2 (fr)
JP (1) JP2001513015A (fr)
CN (1) CN1140310C (fr)
CA (1) CA2281939A1 (fr)
DE (1) DE19707200A1 (fr)
WO (1) WO1998037939A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7429220B2 (en) 2001-04-13 2008-09-30 Acushnet Company Golf balls containing interpenetrating polymer networks
US20050209328A1 (en) * 2004-03-19 2005-09-22 Allgood Charles C Alphahydroxyacids with ultra-low metal concentration

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951787A (en) * 1930-10-02 1934-03-20 Standard Oil Dev Co Method and apparatus for countercurrent treating
DE1553467A1 (de) * 1966-04-16 1970-09-17 Sudhaus Soehne Heinrich Schloss
US3454490A (en) * 1966-08-10 1969-07-08 Atomic Energy Commission Concentration of ions using ion selective membranes
BE791696A (fr) * 1971-12-24 1973-03-16 Metallgesellschaft Ag Procede pour accelerer la separation de dispersions liquides
FR2179649B1 (fr) * 1972-04-14 1974-10-18 Ugine Kuhlmann
LU77707A1 (fr) * 1977-07-07 1979-03-26 Seguin & Cie Procede d'extraction de constituants de bois destines a etre utilises dans l'elaboration de liquides alcoolises et produit obtenu au cours de ce procede
US4290882A (en) * 1978-12-21 1981-09-22 Davy Powergas Inc. Electrostatic separation of impurities phase from liquid-liquid extraction
US4698303A (en) * 1985-02-15 1987-10-06 Engenics, Inc. Production of lactic acid by continuous fermentation using an inexpensive raw material and a simplified method of lactic acid purification
US4645512A (en) * 1985-05-06 1987-02-24 The Dow Chemical Company Continuous process for removing water-soluble particles from organic liquids
DE3635450A1 (de) * 1986-10-18 1988-04-21 Metallgesellschaft Ag Verfahren zur selektiven gewinnung von germanium und/oder arsen aus waessrigen loesungen
US5466455A (en) * 1990-10-18 1995-11-14 Huffstutler, Jr.; Miles C. Polyphase fluid-extraction process, resulting products and methods of use
WO1992006701A1 (fr) 1990-10-18 1992-04-30 Huffstutler, M., Conrad, Jr. Preparations d'extraits de symphytum fluide concentre, formes therapeutiques et procedes d'utilisation
JPH04268521A (ja) * 1991-02-25 1992-09-24 Sumitomo Electric Ind Ltd 光ファイバ着色心線の製造方法
US5510247A (en) * 1993-03-29 1996-04-23 University Of Pittsburgh Centrifugal multiphase systems and method for using the same
FR2707416B1 (fr) * 1993-07-08 1995-08-18 Cogema Procédé et installation de décontamination d'effluents nitriques radioactifs contenant du strontium et du sodium.
RU2080162C1 (ru) 1994-04-27 1997-05-27 Акционерное общество открытого типа "Научно-исследовательский и проектный институт азотной промышленности и продуктов органического синтеза" Аппарат для разделения веществ с помощью жидких мембран
ES2135926T3 (es) * 1995-10-19 1999-11-01 Bayer Ag Extractor trifasico multietapa.
US6446815B2 (en) * 1995-10-19 2002-09-10 Bayer Aktiengesellschaft Multiple phase extractor
WO1997014487A1 (fr) * 1995-10-19 1997-04-24 Bayer Aktiengesellschaft Procede d'extraction a etages multiples
JP2000501988A (ja) * 1995-12-15 2000-02-22 バイエル・アクチエンゲゼルシヤフト 多相抽出器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9837939A2 *

Also Published As

Publication number Publication date
CN1248172A (zh) 2000-03-22
US6387255B1 (en) 2002-05-14
JP2001513015A (ja) 2001-08-28
WO1998037939A3 (fr) 1998-12-17
CA2281939A1 (fr) 1998-09-03
DE19707200A1 (de) 1998-08-27
CN1140310C (zh) 2004-03-03
WO1998037939A2 (fr) 1998-09-03

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