ES355492A1 - A method and apparatus for Separating Solvent from a Mixture of Polymerizate and Solvent - Google Patents

A method and apparatus for Separating Solvent from a Mixture of Polymerizate and Solvent

Info

Publication number
ES355492A1
ES355492A1 ES355492A ES355492A ES355492A1 ES 355492 A1 ES355492 A1 ES 355492A1 ES 355492 A ES355492 A ES 355492A ES 355492 A ES355492 A ES 355492A ES 355492 A1 ES355492 A1 ES 355492A1
Authority
ES
Spain
Prior art keywords
solvent
polymerizate
withdrawn
foam
leaves
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.)
Expired
Application number
ES355492A
Other languages
Spanish (es)
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.)
Werner and Pfleiderer GmbH
Original Assignee
Werner and Pfleiderer 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 Werner and Pfleiderer GmbH filed Critical Werner and Pfleiderer GmbH
Publication of ES355492A1 publication Critical patent/ES355492A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/55—Screws having reverse-feeding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)

Abstract

Solvent is removed from a hot mixture of polymerizate and solvent by injecting the mixture under pressure through an opening 5 between the ends of casing 2 wherein decompression and substantial vaporization of solvent occurs and foam is formed the foam is broken by rotating intercalating screws 1, the solvent vapour flows through jacketed cooled zone 17 and condensate is withdrawn at outlet 3, while the polymerizate is conveyed with recompression in the opposite direction and is reheated by heating jacket 4. The screws are provided, downstream of opening 5, with flights 6 which have a vapour conveying action contrary to the direction of the feed. Kneading elements 7 assist in raising the polymerization mass to the required temperature. The polymerizate, which leaves the left-hand end of the casing, still contains solvent and it is passed through throttle 8 into a second stage connected by openings 13, 131, 1311 to a vacuum pump. Solvent condensate is withdrawn at outlet 14 and desolventized polymerizate leaves the apparatus through exit 15.
ES355492A 1967-08-19 1968-06-26 A method and apparatus for Separating Solvent from a Mixture of Polymerizate and Solvent Expired ES355492A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0044625 1967-08-19

Publications (1)

Publication Number Publication Date
ES355492A1 true ES355492A1 (en) 1970-04-16

Family

ID=7604148

Family Applications (2)

Application Number Title Priority Date Filing Date
ES355492A Expired ES355492A1 (en) 1967-08-19 1968-06-26 A method and apparatus for Separating Solvent from a Mixture of Polymerizate and Solvent
ES370138A Expired ES370138A1 (en) 1967-08-19 1969-08-01 A method and apparatus for Separating Solvent from a Mixture of Polymerizate and Solvent

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES370138A Expired ES370138A1 (en) 1967-08-19 1969-08-01 A method and apparatus for Separating Solvent from a Mixture of Polymerizate and Solvent

Country Status (5)

Country Link
BE (1) BE719096A (en)
ES (2) ES355492A1 (en)
FR (1) FR1576156A (en)
GB (1) GB1175635A (en)
NL (1) NL6806060A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908352A1 (en) * 1979-03-03 1980-09-18 Bayer Ag METHOD FOR SEPARATING THE INDIVIDUAL PHASE CURRENTS OF A MULTI-PHASE CURRENT
DE3738976A1 (en) * 1987-11-17 1989-05-24 Belland Ag METHOD AND DEVICE FOR PRODUCING THERMOPLASTIC PLASTICS
DE3840293A1 (en) * 1988-11-30 1990-05-31 Werner & Pfleiderer METHOD FOR REMOVING IMPURITIES FROM POLYMERIC PLASTICS, AND DEVICE FOR CARRYING OUT THE METHOD
EP0779321B1 (en) * 1995-12-05 2003-08-06 Fuji Photo Film Co., Ltd. Process for the preparation of a cellulose ester solution

Also Published As

Publication number Publication date
NL6806060A (en) 1969-02-21
BE719096A (en) 1969-01-16
ES370138A1 (en) 1971-04-01
FR1576156A (en) 1969-07-25
GB1175635A (en) 1969-12-23

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