EP0131885A2 - Dispositif pour effectuer une polymérisation radicalaire, et son application - Google Patents

Dispositif pour effectuer une polymérisation radicalaire, et son application Download PDF

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Publication number
EP0131885A2
EP0131885A2 EP84108039A EP84108039A EP0131885A2 EP 0131885 A2 EP0131885 A2 EP 0131885A2 EP 84108039 A EP84108039 A EP 84108039A EP 84108039 A EP84108039 A EP 84108039A EP 0131885 A2 EP0131885 A2 EP 0131885A2
Authority
EP
European Patent Office
Prior art keywords
stirrer
diameter
impeller
axis
blades
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.)
Granted
Application number
EP84108039A
Other languages
German (de)
English (en)
Other versions
EP0131885A3 (en
EP0131885B1 (fr
Inventor
Helmut Klapp
Axel Dr. Dipl.-Ing. Wolf
Otmar Zajicek
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie 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 Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of EP0131885A2 publication Critical patent/EP0131885A2/fr
Publication of EP0131885A3 publication Critical patent/EP0131885A3/de
Application granted granted Critical
Publication of EP0131885B1 publication Critical patent/EP0131885B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction

Definitions

  • Radical polymerizations of ethylenically unsaturated monomers are generally carried out with stirring, usually in stirred tanks, for. B. stirred autoclaves.
  • stirring devices which usually consist of a stirrer driven via a stirring axis and often additional stators.
  • the stators usually sheets or displacers of various shapes, serve as baffles. This is intended to achieve better mixing.
  • stirrers themselves are usually located on vertical stirrer axes (stirrer shafts) which generally protrude centrally from above or below into the container.
  • Stirrers driven in this way from above generally have the advantage of fewer sealing problems on the passage of the stirrer shaft through the container wall, if such a passage is necessary at all, but vibration (resonance) problems often occur due to the longer shaft length, and the shaft must also have greater torsional rigidity.
  • the lower drive has these disadvantages comparatively to a much lesser extent, since the stirrer shaft can be kept shorter for it, but in this embodiment there are greater sealing problems.
  • Stirrers are used in a wide variety of single and multi-stage designs, e.g. B. rotary stirrer, cone stirrer, stirring rollers, cutting stirrer, bar stirrer, finger stirrer, frame stirrer, blade stirrer, turbine stirrer, propeller stirrer, disk stirrer, anchor stirrer and impeller stirrer.
  • a device consisting of a conventional reaction container, usually a closed container, for. B. an autoclave, with usual supply and discharge lines, which are generally connected to the container via valves, and a special centrally installed impeller stirrer 1, the vertical stirrer shaft 2 of which coincides with the longitudinal axis of the usually cylindrical container and which has a diameter d of 0 , 2 to 0.9 times, preferably 0.4 to 0.7 times, the container inner diameter D.
  • the container can also be equipped with conventional cooling and / or heating devices, e.g. B. cooling or heating jacket, which is flowed through by a heat transfer medium, and / or preferably reflux cooler and other conventional inputs.
  • buildings be provided, e.g. B. displacers, baffles, Devices for spraying the walls and internals etc.
  • the special impeller stirrer 1 has on the stirrer axis 3 a ground clearance of 0.05 to 0.15 times the stirrer diameter d, the impeller blades 11 have an angle of incidence of 0 to 30 ° (upwards) with respect to the horizontal, so that the ground clearance increases the wing tips 4 lie in the same area as on the stirrer axis 3, the inflow surfaces 5 essentially parallel to the stirrer axis 3 and essentially triangular to semicircular-like (semicircular) cross section 12.
  • the wing height h is 0.1 to 1 times, preferably 0 , 1 to 0.5 times, in particular 0.15 to 0.3 times the stirrer diameter d
  • the blade thickness t of the stirring blades .11 is 0.5 to 5 times, preferably 0.6 up to 1 times the wing height h.
  • the impeller blades 11 are usually bent against the direction of rotation 10, the ratio of the stirrer diameter d to the radius r of the blades is 0 to 4, preferably 1 to 3.
  • a ratio of the associated radius of curvature k to the blade height h of k / h 0.01 to 0.3 has proven to be particularly expedient.
  • the modified impeller stirrer 1 used according to the invention can preferably be used in the context of the device according to the invention in a reaction autoclave with an essentially cylindrical shape with dished, basket or flat bottoms.
  • the impeller 1 is installed in the container so that its stirrer shaft 2 coincides with the longitudinal axis or parts of the longitudinal axis of the cylindrical container part.
  • the stirrer 1 can be driven from above or from below.
  • FIGS. 1-3 A preferred embodiment of the stirrer 1 is shown schematically in the attached FIGS. 1-3.
  • the device of the invention can of course be carried out in all the materials from which the previous devices could be made, for. B. from stainless steels, the coatings previously used can be used in the context of the invention, for. B. glass and enamel covers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Polymerisation Methods In General (AREA)
EP84108039A 1983-07-12 1984-07-10 Dispositif pour effectuer une polymérisation radicalaire, et son application Expired - Lifetime EP0131885B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833325095 DE3325095A1 (de) 1983-07-12 1983-07-12 Vorrichtung zur durchfuehrung einer radikalischen polymerisation und ihre verwendung
DE3325095 1983-07-12

Publications (3)

Publication Number Publication Date
EP0131885A2 true EP0131885A2 (fr) 1985-01-23
EP0131885A3 EP0131885A3 (en) 1987-10-14
EP0131885B1 EP0131885B1 (fr) 1990-11-28

Family

ID=6203768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108039A Expired - Lifetime EP0131885B1 (fr) 1983-07-12 1984-07-10 Dispositif pour effectuer une polymérisation radicalaire, et son application

Country Status (2)

Country Link
EP (1) EP0131885B1 (fr)
DE (2) DE3325095A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323375A1 (fr) * 1987-12-30 1989-07-05 MORITZ, Société Anonyme Mobile d'agitation pour appareils de mélange de produits pulvérulents, pâteux ou granuleux
WO1996014142A1 (fr) * 1994-11-03 1996-05-17 Geir Nordahl Pale pour dispositif melangeur
US5984520A (en) * 1994-11-03 1999-11-16 Nordahl; Geir Blade for a mixing device
CN1047096C (zh) * 1994-11-03 1999-12-08 盖尔·诺达尔 用于混合搅拌装置的叶片
CN103341336A (zh) * 2013-06-17 2013-10-09 济南卡博唐生物科技有限公司 搅拌釜的搅拌器
CN114585433A (zh) * 2019-09-16 2022-06-03 艾卡多搅拌及混合工程有限公司 搅拌器装置和用于混合的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430763A1 (de) * 1994-08-30 1996-03-07 Basf Ag Vorrichtung und Verfahren zur Intensiventgasung von PVC-Suspensionen und Dispersionen
CN110980935B (zh) * 2019-12-14 2022-03-15 浙江永续环境工程有限公司 一种生物膜反应器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301204A (en) * 1939-07-28 1942-11-10 Du Pont Apparatus for polymerization processes
GB863055A (en) * 1958-01-21 1961-03-15 Union Carbide Corp Suspension polymerization and apparatus therefor
FR1385374A (fr) * 1963-05-14 1965-01-15 Pechiney Saint Gobain Procédé et appareillage pour la préparation en suspension de polymères et de copolymères de type vinylique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301204A (en) * 1939-07-28 1942-11-10 Du Pont Apparatus for polymerization processes
GB863055A (en) * 1958-01-21 1961-03-15 Union Carbide Corp Suspension polymerization and apparatus therefor
FR1385374A (fr) * 1963-05-14 1965-01-15 Pechiney Saint Gobain Procédé et appareillage pour la préparation en suspension de polymères et de copolymères de type vinylique

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323375A1 (fr) * 1987-12-30 1989-07-05 MORITZ, Société Anonyme Mobile d'agitation pour appareils de mélange de produits pulvérulents, pâteux ou granuleux
FR2625449A1 (fr) * 1987-12-30 1989-07-07 Moritz Mobile d'agitation pour appareils de melange de produits pulverulents, pateux ou granuleux
US4941750A (en) * 1987-12-30 1990-07-17 Societe Anonyme: Moritz Moving agitator member for apparatus for mixing substances in powder, paste, or granular form
WO1996014142A1 (fr) * 1994-11-03 1996-05-17 Geir Nordahl Pale pour dispositif melangeur
AU680331B2 (en) * 1994-11-03 1997-07-24 Geir Nordahl A blade for a mixing device
US5984520A (en) * 1994-11-03 1999-11-16 Nordahl; Geir Blade for a mixing device
CN1047096C (zh) * 1994-11-03 1999-12-08 盖尔·诺达尔 用于混合搅拌装置的叶片
CN103341336A (zh) * 2013-06-17 2013-10-09 济南卡博唐生物科技有限公司 搅拌釜的搅拌器
CN103341336B (zh) * 2013-06-17 2015-09-16 济南卡博唐生物科技有限公司 搅拌釜的搅拌器
CN114585433A (zh) * 2019-09-16 2022-06-03 艾卡多搅拌及混合工程有限公司 搅拌器装置和用于混合的方法

Also Published As

Publication number Publication date
DE3483668D1 (de) 1991-01-10
EP0131885A3 (en) 1987-10-14
DE3325095A1 (de) 1985-01-24
EP0131885B1 (fr) 1990-11-28

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