WO2001096636A1 - Procede et dispositif de production de fils, fibres, films ou corps moules en cellulose - Google Patents

Procede et dispositif de production de fils, fibres, films ou corps moules en cellulose Download PDF

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Publication number
WO2001096636A1
WO2001096636A1 PCT/EP2001/006697 EP0106697W WO0196636A1 WO 2001096636 A1 WO2001096636 A1 WO 2001096636A1 EP 0106697 W EP0106697 W EP 0106697W WO 0196636 A1 WO0196636 A1 WO 0196636A1
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WO
WIPO (PCT)
Prior art keywords
reactor
cellulose
mixture
processing
fed
Prior art date
Application number
PCT/EP2001/006697
Other languages
German (de)
English (en)
Inventor
Lüder GERKING
Original Assignee
Gerking Lueder
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 Gerking Lueder filed Critical Gerking Lueder
Priority to AU70574/01A priority Critical patent/AU7057401A/en
Publication of WO2001096636A1 publication Critical patent/WO2001096636A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/003—Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/02—Preparation of spinning solutions
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof

Definitions

  • the invention relates to a process for the production of threads, fibers, films or moldings made of cellulose and in particular for the preparation of a solution for the production, and an apparatus for the production of threads, fibers, films or moldings made of cellulose.
  • NMMO N-methylmorpholine-N-oxide
  • No. 5,603,883 describes a method and a device for producing cellulose products. knows, in which cellulose is mixed in an aqueous solvent containing NMMO pulper to form a suspension or cellulose mass. The cellulosic mass is fed from the pulper to a thin-film treatment device in which a concentrated cellulose suspension is produced. This concentrated cellulose suspension is temporarily stored in an intermediate vessel provided with stirring elements and then fed to a second thin-film treatment apparatus in which the concentrated cellulose suspension is transformed into a moldable or spinnable solution of cellulose by heating. This solution is further processed for the production of cellulose films, fibers, threads, moldings.
  • the processing of the cellulosic mass takes place continuously at ambient temperature, preferably in a pulper, with the constant addition of dry cellulose and aqueous NMMO solution.
  • This mixture constantly leaves the pulper and goes directly to a reactor which heats the mass and by removing the water under vacuum, a solution, preferably a spinning solution, is produced which also constantly leaves this reactor and is pumped directly to the spinning mill or other processing stations.
  • the spinning for Lyocell threads is similar to the melt spinning process in a known manner, with the particular difference that the cellulose is precipitated in a water bath after the spinning solution of cellulose and NMMO and residual water passes through an air gap in which the threads are reduced in diameter by tensile forces become.
  • Dry cellulose is used as cellulose in sheets (e.g. 3 mm thick and A4 format), sheets or pieces as they come from the cellulose factories. It is predominantly made from wood in cellulose webs, which are cut into sheets, if necessary placed one above the other and pressed.
  • the content of ⁇ -cellulose is generally greater than 90% and the degree of polymerization DP (average degree of polymerization) is over 550, but with high-quality viscose fibers up to 800 and 900.
  • cellulose with a lower ⁇ -cellulose content e.g. 70% or cellulose with a higher proportion of hemi-cellulose are processed, namely cellulose with a DP over 450 and ⁇ -cellulose over 60%.
  • the device according to the invention and the method according to the invention introduce the heat in a short time and uniformly into the reactor onto the cellulosic mass.
  • the pulper 4 which can be a mixer of the La Mort type, has feeders 1 for dry cellulose, mostly in sheets, and 2 for the feed of aqueous solvent NMMO and 3 for additional additives used for thermal stabilization and the like.
  • the pulper 4 is connected in its lower region to a downpipe 7, which in turn is connected to a feed device 23 for a single reactor 8.
  • the feed device of the reactor 8 consists of a feed hopper 10, in which a stirring element 11 is attached, and an alternating piston feed system 13.
  • the reactor can be designed as a single-shaft reactor or as a two-shaft reactor, preferably a Discotherm B reactor from List or a double cage reactor according to DE 40 13 912.
  • the drive of the reactor is on one side of the horizontal reactor, for example at 14, and the supply of the heating medium hot water or thermal oil, with which the wall of the reactor and / or stirring elements 9 arranged in the interior of the reactor 8 are heated, on the other Side of the reactor provided at 15.
  • a dome 16 for discharging the evaporating water according to arrow 17 is arranged.
  • a pump 19 is arranged after the screw 18, which is preferably as
  • dry cellulose as indicated, mostly in tablets, and the aqueous solvent in concentrations of 50%, also somewhat below, but preferably above, are fed to pulper 5 at 1 and 2 without these materials being preheated.
  • Additives for thermal stabilization and the like can be added at 3.
  • the substances supplied are mixed to form a cellulosic mass which has a cellulose content of not more than 10%, the remainder being NMMO, water and optionally additives.
  • This mixture passes through the downpipe 7 into the feed device 23 and the reactor 8.
  • the mass fed to the feed hopper 10 is moved by the stirring elements 11 and the mass emerging from the feed hopper 10 is fed into the evacuated space 12 via the reciprocating piston feed system 13 of the reactor 8 introduced.
  • the cellulosic mass is heated to approximately 100 ° C. uniformly and in the shortest possible time. It is important that there is a self-cleaning of the parts touched by the mass, in particular of the stirring element or elements 9.
  • the evaporating water is removed from the dome 16.
  • the solution is passed through the screw 18 is discharged from the space under vacuum and the pump 19 conveys the spinning solution to the spinning mill 21 via the filter 20 which is generally necessary. In the preferred case, lyocell threads or fibers are produced there.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)
  • Artificial Filaments (AREA)

Abstract

L'invention concerne un procédé et un dispositif destinés à la production de fils, fibres, films ou corps moulés en cellulose, de préférence, à la production de fils et fibres cellulosiques à haute ténacité. Selon ce procédé, on mélange de la cellulose sèche à un solvant N-méthyl-morpholino-n-oxide (NMMO) aqueux dans un mélangeur (4) conçu sous forme de triturateur. Et on cède ce mélange sans récipient intermédiaire, c'est-à-dire directement, à un réacteur (8) dans lequel la masse cellulosique est chauffée et homogénéisée. Puis l'eau est extraite du mélange produit. Le mélange obtenu dans le réacteur (8) est cédé, sans récipient intermédiaire, à un dispositif de transformation en films, fibres, fils et/ou corps moulés.
PCT/EP2001/006697 2000-06-13 2001-06-13 Procede et dispositif de production de fils, fibres, films ou corps moules en cellulose WO2001096636A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70574/01A AU7057401A (en) 2000-06-13 2001-06-13 Method and device for producing threads, fibres, films or moulded bodies out of cellulose

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10029044.2 2000-06-13
DE2000129044 DE10029044A1 (de) 2000-06-13 2000-06-13 Verfahren und Vorrichtung zur Herstellung von Fäden, Fasern, Folien oder Formkörpern aus Cellulose

Publications (1)

Publication Number Publication Date
WO2001096636A1 true WO2001096636A1 (fr) 2001-12-20

Family

ID=7645535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/006697 WO2001096636A1 (fr) 2000-06-13 2001-06-13 Procede et dispositif de production de fils, fibres, films ou corps moules en cellulose

Country Status (3)

Country Link
AU (1) AU7057401A (fr)
DE (1) DE10029044A1 (fr)
WO (1) WO2001096636A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8317503B2 (en) * 2004-05-13 2012-11-27 Lenzing Aktiengesellschaft Device for producing Lyocell fibers
WO2017211798A1 (fr) 2016-06-07 2017-12-14 Universität Regensburg Procédé de préparation d'un produit à base de cellulose

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10200405A1 (de) 2002-01-08 2002-08-01 Zimmer Ag Spinnvorrichtung und -verfahren mit Kühlbeblasung
DE10204381A1 (de) 2002-01-28 2003-08-07 Zimmer Ag Ergonomische Spinnanlage
AT512601B1 (de) * 2012-03-05 2014-06-15 Chemiefaser Lenzing Ag Verfahren zur Herstellung einer Cellulosesuspension
AT514137A1 (de) 2013-04-05 2014-10-15 Lenzing Akiengesellschaft Polysaccharidfaser und Verfahren zu ihrer Herstellung
AT514136A1 (de) 2013-04-05 2014-10-15 Lenzing Akiengesellschaft Polysaccharidfaser mit erhöhtem Fibrillationsvermögen und Verfahren zu ihrer Herstellung
AT514123B1 (de) 2013-04-10 2015-06-15 Lenzing Akiengesellschaft Polysaccharidfilm und Verfahren zu seiner Herstellung
AT514468A1 (de) 2013-06-17 2015-01-15 Lenzing Akiengesellschaft Hochsaugfähige Polysaccharidfaser und ihre Verwendung
AT514474B1 (de) 2013-06-18 2016-02-15 Chemiefaser Lenzing Ag Polysaccharidfaser und Verfahren zu ihrer Herstellung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2913589A1 (de) * 1979-03-02 1980-09-11 Akzona Inc Geformter zellulosegegenstand
WO1994006530A1 (fr) * 1992-09-17 1994-03-31 Courtaulds Fibres (Holdings) Limited Formation de solutions
DE4423740A1 (de) * 1994-07-06 1996-01-11 Basf Ag Verfahren zur Herstellung von kristallisiertem N-Methylol-(meth)acrylamid
WO1996033302A1 (fr) * 1995-04-19 1996-10-24 Lenzing Aktiengesellschaft Installation et mecanisme integre pour la production de feuilles et de fibres de cellulose

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144080A (en) * 1977-07-26 1979-03-13 Akzona Incorporated Process for making amine oxide solution of cellulose

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2913589A1 (de) * 1979-03-02 1980-09-11 Akzona Inc Geformter zellulosegegenstand
WO1994006530A1 (fr) * 1992-09-17 1994-03-31 Courtaulds Fibres (Holdings) Limited Formation de solutions
DE4423740A1 (de) * 1994-07-06 1996-01-11 Basf Ag Verfahren zur Herstellung von kristallisiertem N-Methylol-(meth)acrylamid
WO1996033302A1 (fr) * 1995-04-19 1996-10-24 Lenzing Aktiengesellschaft Installation et mecanisme integre pour la production de feuilles et de fibres de cellulose

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DIENER A ET AL: "CONTINUOUS DISSOLUTION PROCESS OF CELLULOSE IN NMMO", CHEMICAL FIBERS INTERNATIONAL, DEUTSCHER FACHVERLAG, DE, vol. 49, no. 1, March 1999 (1999-03-01), pages 40 - 42, XP000827372, ISSN: 0340-3343 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8317503B2 (en) * 2004-05-13 2012-11-27 Lenzing Aktiengesellschaft Device for producing Lyocell fibers
WO2017211798A1 (fr) 2016-06-07 2017-12-14 Universität Regensburg Procédé de préparation d'un produit à base de cellulose

Also Published As

Publication number Publication date
AU7057401A (en) 2001-12-24
DE10029044A1 (de) 2002-01-03

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