EP0764127B1 - Vorrichtung zum halten und abgeben einer homogenen cellulosesuspension - Google Patents

Vorrichtung zum halten und abgeben einer homogenen cellulosesuspension Download PDF

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Publication number
EP0764127B1
EP0764127B1 EP96905589A EP96905589A EP0764127B1 EP 0764127 B1 EP0764127 B1 EP 0764127B1 EP 96905589 A EP96905589 A EP 96905589A EP 96905589 A EP96905589 A EP 96905589A EP 0764127 B1 EP0764127 B1 EP 0764127B1
Authority
EP
European Patent Office
Prior art keywords
suspension
mixing vessel
homogeneous
cellulose
inlet
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 - Lifetime
Application number
EP96905589A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0764127A1 (de
Inventor
Stefan Zikeli
Friedrich Ecker
Ulrich Möderl
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.)
Lenzing AG
Original Assignee
Lenzing AG
Chemiefaser Lenzing 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 Lenzing AG, Chemiefaser Lenzing AG filed Critical Lenzing AG
Publication of EP0764127A1 publication Critical patent/EP0764127A1/de
Application granted granted Critical
Publication of EP0764127B1 publication Critical patent/EP0764127B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle
    • 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

Definitions

  • the present invention relates to a device for holding and dispensing a homogeneous cellulose suspension cylindrical, essentially horizontal Mixing vessel with an inlet for the homogeneous suspension, one Stirrer shaft with attached stirring elements, which Agitator shaft is axially supported in the cylindrical mixing vessel, and a discharge device for the homogeneous suspension.
  • amine oxide primarily used N-methylmorpholine-N-oxide (NMMO).
  • NMMO N-methylmorpholine-N-oxide
  • Other Amine oxides are e.g. in EP-A - 0 553 070.
  • a method of making moldable cellulose solutions is e.g. known from EP-A-0 356 419.
  • the production cellulosic shaped body using tertiary amine oxides is commonly referred to as the amine oxide process.
  • WO 94/28217 describes a method for producing a Premix based on cellulose known, from which a moldable cellulose solution can be prepared. According to this Process is crushed cellulose and an amine oxide solution in a horizontal, cylindrical mixing chamber introduced which has a rotor with axially spaced Has stirring elements. The mixture is in the mixing chamber stirred by the rotor at a speed of 40 to 80 revolutions per minute is rotated. Preferably the Mix in the mixing chamber at a temperature above 65 ° C held.
  • WO 94/28217 there is also a funnel-shaped one Tank described, which is arranged vertically and in which Stirring arms are provided. The premix should be in this tank be kept in a homogeneous state. With piston pumps pumped out the homogeneous premix.
  • the amine oxide process is a series of stages from the crushing of the cellulose, the Preparation of the cellulose suspension, optionally one subsequent further homogenization of the Cellulose suspension, the transfer of the homogeneous Cellulose suspension in the moldable cellulose solution until Molding process itself, i.e. the production of fibers, foils or other shaped bodies.
  • Molding process itself i.e. the production of fibers, foils or other shaped bodies.
  • the present invention therefore has the object that To design amine oxide processes so that short-term Interruptions from the overall process are coped with and one brief interruption of a stage of the procedure does not an interruption of the other stages.
  • the invention is based on the knowledge that the task underlying the present invention, best with a Can be solved as a buffer for homogeneous containers
  • Cellulose suspension can serve and always on the one hand contains certain amount of homogeneous suspension, which at brief interruption of the suspension production as Serves and with the during the interruption period Cellulose solution produced and the mold fed can be so that e.g. the manufacture of the fibers is not needs to be interrupted.
  • the Containers according to the invention have a certain empty space in order to be able to take up additional homogeneous suspension, so that Suspension production in the event of a brief standstill of the Spinning operation, e.g. when changing the spinneret, not needs to be interrupted.
  • a particular problem when keeping homogeneous suspensions of cellulose in aqueous amine oxide solution is to prevent the homogeneous suspension from segregating, i.e. the cellulose settles out of the liquid phase. This danger persists even while the homogeneous suspension is being dispensed the subsequent process stage. Both problems are with the Device according to the invention solved. It has been shown that effective deposition of the cellulose during discharge can be prevented if a screw conveyor is used for discharge is provided which in with the interior of the mixing vessel Connection is established. The feed zone of the screw conveyor should be thus open directly into the interior of the mixing vessel.
  • the device used according to the invention does not separate auxiliary substances such as stabilizers, dispersants, spinning aids, reactivity-improving reagents, incorporation media of an inorganic or organic nature (barite, activated carbon, SiO 2 , CMC, modifiers (polyethylene glycols) and other polymers, such as nylon, dyes, which are contained in the suspension.
  • auxiliary substances such as stabilizers, dispersants, spinning aids, reactivity-improving reagents, incorporation media of an inorganic or organic nature (barite, activated carbon, SiO 2 , CMC, modifiers (polyethylene glycols) and other polymers, such as nylon, dyes, which are contained in the suspension.
  • Another expedient embodiment of the invention used Device is that the screw conveyor diametrically opposite to the inlet is provided.
  • the Device used according to the invention is designed so that the Ratio of the capacity of the discharge device to Capacity of the cylindrical mixing vessel at least Is 1: 100.
  • the figure shows schematically a longitudinal section of a horizontally placed mixer, which essentially consists of a cylindrical container 1 with a double jacket for a indirect heating (not shown) and one in the container 1 centrally mounted rotor 2 with attached Stirrer blades 3.
  • the rotor 2 is driven by a motor 4 driven.
  • the homogeneous cellulose suspension is through the inlet opening 5 introduced into the cylindrical container 1, of the Transport sheets 3 detected and inside the container 1st constantly mixed by the stirring blades 3 and in motion held.
  • the homogeneous suspension is obtained by means of the motor 9 operated screw conveyor 7 removed from the container 1 and over a pump 8 e.g. a device (not shown) fed, in which the suspension continuously in a malleable solution is transferred.
  • a pump 8 e.g. a device (not shown) fed, in which the suspension continuously in a malleable solution is transferred.
  • a thin film treatment apparatus is used.
  • a deratiges The method is known from EP-A-0 356 419.
  • the feed zone of the screw conveyor 7 is in a more direct manner Connection with the interior of the container 1.
  • the Screw conveyor 7 is useful on the underside of the Flanged container 1, the outlet opening 6, that is Connection between the feed zone of the screw conveyor 7 and the interior of the container 1 square or rectangular can be trained.
  • container 1 In normal operation, container 1 is about half full homogeneous suspension filled.
  • a device that is designed as a mixer and in essentially from the container 1, the rotor 2 with attached Stirring elements 3, the motor 4 and the inlet opening 5, is operated by Draiswerke GmbH, Mannheim, Germany, under the name turbulent mixer type KT 1000 FM I in the Brought to trade.
  • turbulent mixer that is Exhaust opening as a kind of flap around the lower end of the Container belly attached in the middle.
  • This type of removal of the Mixed goods are not for homogeneous cellulose suspensions suitable because the mix segregates when it is removed would.
  • segregation with the Conveyor screw provided according to the invention is effective prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Materials For Medical Uses (AREA)
  • Artificial Filaments (AREA)
  • Paper (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP96905589A 1995-04-25 1996-03-25 Vorrichtung zum halten und abgeben einer homogenen cellulosesuspension Expired - Lifetime EP0764127B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT7129/55 1995-04-25
AT0071295A AT409130B (de) 1995-04-25 1995-04-25 Verwendung einer vorrichtung zum halten und abgeben einer homogenen cellulosesuspension
PCT/AT1996/000059 WO1996033934A1 (de) 1995-04-25 1996-03-25 Vorrichtung zum halten und abgeben einer homogenen cellulosesuspension

Publications (2)

Publication Number Publication Date
EP0764127A1 EP0764127A1 (de) 1997-03-26
EP0764127B1 true EP0764127B1 (de) 1999-06-02

Family

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EP96905589A Expired - Lifetime EP0764127B1 (de) 1995-04-25 1996-03-25 Vorrichtung zum halten und abgeben einer homogenen cellulosesuspension

Country Status (23)

Country Link
US (1) US5921675A (ro)
EP (1) EP0764127B1 (ro)
JP (1) JPH10502604A (ro)
CN (1) CN1152287A (ro)
AT (2) AT409130B (ro)
AU (1) AU713310B2 (ro)
BG (1) BG62647B1 (ro)
BR (1) BR9606338A (ro)
CA (1) CA2193358A1 (ro)
CZ (1) CZ292838B6 (ro)
DE (2) DE19680270D2 (ro)
GB (1) GB2303577A (ro)
HK (1) HK1010359A1 (ro)
HU (1) HU223552B1 (ro)
MX (1) MX9700039A (ro)
NO (1) NO965560D0 (ro)
PL (1) PL317655A1 (ro)
RO (1) RO114112B1 (ro)
SK (1) SK283159B6 (ro)
TR (1) TR199600280A2 (ro)
TW (1) TW341960U (ro)
WO (1) WO1996033934A1 (ro)
ZA (1) ZA962932B (ro)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1304879B1 (it) 1998-07-27 2001-04-05 Tecnorama Srl Impianto e metodo operativo per l'alimentazione di macchine per latintura in continuo di materiali tessili
DE10007794A1 (de) 2000-02-21 2001-06-28 Zimmer Ag Polymerzusammensetzung und daraus hergestellter Formkörper
US7097344B2 (en) * 2003-06-30 2006-08-29 Hyosung Corporation Homogeneous cellulose solution and high tenacity lyocell multifilament using the same
KR100488604B1 (ko) * 2003-07-25 2005-05-11 주식회사 효성 라이오셀 멀티 필라멘트
DE102005001802A1 (de) * 2004-09-30 2006-04-06 List Holding Ag Verfahren zur kontinuierlichen Durchführung von Polymerisationsprozessen
KR100575388B1 (ko) * 2004-12-30 2006-05-03 주식회사 효성 고균질 셀룰로오스 용액 및 이로 부터 제조된 섬유
US20060264865A1 (en) * 2005-05-23 2006-11-23 Carstens Jerry E System comprising thong-shaped holder and absorbent interlabial article
DE102006015541A1 (de) * 2006-03-31 2007-10-04 List Holding Ag Verfahren und Vorrichtung zur Behandlung von zähviskosen Produkten
KR100721443B1 (ko) * 2006-04-27 2007-05-23 주식회사 효성 고무보강용 셀룰로오스 열처리 코드
KR100674670B1 (ko) * 2006-04-27 2007-01-25 주식회사 효성 고무보강용 셀룰로오스 생코드
EP2374528B1 (en) * 2009-09-04 2014-11-12 Tsukasa Co., Ltd. Apparatus for powder particle agitation
DE102010038417A1 (de) * 2010-07-26 2012-01-26 Huber Se Vorrichtung und Verfahren zum Entfernen von Siebgut aus einer Flüssigkeit
AT512601B1 (de) 2012-03-05 2014-06-15 Chemiefaser Lenzing Ag Verfahren zur Herstellung einer Cellulosesuspension
CN102756871B (zh) * 2012-07-09 2018-02-13 无锡锡东能源科技有限公司 防堵的生物质原料的水平输送结构
EP3957780A1 (en) * 2013-10-29 2022-02-23 Braskem, S.A. Continuous system and method for producing at least one polymeric yarn
CN105113027B (zh) * 2015-08-29 2017-09-15 山东英利实业有限公司 一种用于lyocell纤维制备的预混合器
US10358296B2 (en) * 2015-09-18 2019-07-23 Maxwell Properties, Llc Systems and methods for delivering asphalt concrete
CN105964164A (zh) * 2016-06-16 2016-09-28 郑国义 均质悬浮方法
CN110225961A (zh) * 2016-12-09 2019-09-10 泰顿生物科学有限公司 用于制造工业副产品的连续中试规模的水热卧式反应器设计
CN107376775A (zh) * 2017-08-23 2017-11-24 南通澳润建材科技有限公司 双轴加湿搅拌机
EP3536832A1 (en) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Lyocell fiber with improved disintegration properties
EP3536853A1 (en) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Lyocell fiber with decreased pill formation
EP3536852A1 (de) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Zellstoff und lyocell faser mit einstellbarem weissgrad
EP3536831A1 (en) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Lyocell fiber with novel cross section
EP3536850A1 (de) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Zellstoff und lyocellformkörper mit reduziertem cellulosegehalt
TWI814782B (zh) 2018-03-06 2023-09-11 奧地利商蘭仁股份有限公司 溶劑紡絲之纖維素纖維
EP3536851A1 (en) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Lyocell fiber with increased tendency to fibrillate
EP3536829A1 (en) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Lyocell fiber with viscose like properties
EP3536833A1 (de) 2018-03-06 2019-09-11 Lenzing Aktiengesellschaft Lyocell-fasern ohne mannan
CN108751422B (zh) * 2018-04-09 2021-08-03 沈阳双壹市政工程有限公司 一种药剂输送装置
CN109250506A (zh) * 2018-09-13 2019-01-22 常州泰聚环保科技有限公司 一种预防物料板结的物料输送系统
FI20195926A1 (en) * 2019-06-12 2020-12-13 Aurotec Gmbh Device for handling thin films
CN110894621B (zh) * 2019-11-06 2022-06-21 当阳市鸿阳新材料科技有限公司 降低莱赛尔纤维原纤化的制备工艺及其设备
CN113058459A (zh) * 2021-04-08 2021-07-02 扬州志同机械有限公司 一种高速易分离的物料搅拌乳化一体机

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960692A (en) * 1929-08-27 1934-05-29 James G Brown Apparatus for treating seeds
US2366673A (en) * 1939-12-30 1945-01-02 United States Gypsum Co Method of preparing gypsum casts
DE1075511B (de) * 1954-12-02 1960-02-18 Ambrette Machinery Corporation, Brooklyn, N. Y. (V. St. A.) Vorrichtung zum Herstellen und Entlüften von Nahrungsmittelpasten, Teig od. dgl
US2991870A (en) * 1956-09-11 1961-07-11 Griffith Edwin Materials processing apparatus
US3059595A (en) * 1958-01-30 1962-10-23 Buehler Ag Geb Food-paste extrusion press
US3548903A (en) * 1968-07-03 1970-12-22 Hollymatic Corp Subdivided meat mixer and method
US3570569A (en) * 1969-05-05 1971-03-16 Hobart Mfg Co Food mixing machine
DE2309027C2 (de) * 1973-02-23 1982-06-09 Metallgesellschaft Ag, 6000 Frankfurt Polykondensationsreaktor
US3901483A (en) * 1973-07-13 1975-08-26 William Lasar Method and apparatus for mixing materials, including ground meat
US4246221A (en) * 1979-03-02 1981-01-20 Akzona Incorporated Process for shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent
US4139309A (en) * 1977-12-09 1979-02-13 E. I. Du Pont De Nemours And Company Apparatus and method
US4185925A (en) * 1978-06-19 1980-01-29 Sorema S.R.L. Tapered-end silo, especially for small-sized plastics material
US4312265A (en) * 1980-05-29 1982-01-26 Koppers Company, Inc. Screw for extruding a food mash
DE3202588A1 (de) * 1982-01-27 1983-08-04 Helmut 2905 Edewecht Noss Mischvorrichtung fuer die herstellung von fleisch- und wurstwaren
US4665810A (en) * 1985-07-12 1987-05-19 Swm Corporation Seal former and flinger discharge assembly for use with apparatus for pressure feeding and pressure cooking a food product
IT206463Z2 (it) * 1986-03-05 1987-08-10 Alitecno Srl Tritacarne ad uso industriale conpremiscelatore ed elica di alimentazione.
US4795104A (en) * 1986-06-06 1989-01-03 Cozzini Manufacturing Corp. Multi-station meat grinder with bone chip removal means
AT392972B (de) * 1988-08-16 1991-07-25 Chemiefaser Lenzing Ag Verfahren zur herstellung von loesungen von cellulose sowie einrichtung zur durchfuehrung des verfahrens
DE3833529C2 (de) * 1988-10-01 2001-01-18 Werner Koch Vorrichtung zum Mischen fester Stoffe
DE4010676A1 (de) * 1990-04-03 1991-10-10 Ihlefeld Karl Helmut Vorrichtung zum foerdern im luftstrom
AT396930B (de) * 1992-01-23 1993-12-27 Chemiefaser Lenzing Ag Aminoxide
GB9219693D0 (en) * 1992-09-17 1992-10-28 Courtaulds Plc Forming solutions
DE4237433C2 (de) * 1992-11-06 1994-05-11 Voith Gmbh J M Stoffknetmaschine
US5413631A (en) * 1993-05-24 1995-05-09 Courtaulds (Holding) Limited Formation of a cellulose-based premix
AT402410B (de) * 1995-04-19 1997-05-26 Chemiefaser Lenzing Ag Verfahren zur herstellung einer cellulosesuspension
AT403800B (de) * 1995-04-28 1998-05-25 Chemiefaser Lenzing Ag Vorrichtung zum kontinuierlichen fördern von schwerfliessenden materialien

Also Published As

Publication number Publication date
HK1010359A1 (en) 1999-06-17
CN1152287A (zh) 1997-06-18
AU4931396A (en) 1996-11-18
GB9625756D0 (en) 1997-01-29
CZ356496A3 (en) 1997-10-15
US5921675A (en) 1999-07-13
PL317655A1 (en) 1997-04-28
SK283159B6 (sk) 2003-03-04
ZA962932B (en) 1996-10-17
HU223552B1 (hu) 2004-09-28
ATE180746T1 (de) 1999-06-15
AT409130B (de) 2002-05-27
HUP9603573A3 (en) 2002-11-28
TW341960U (en) 1998-10-01
GB2303577A (en) 1997-02-26
AU713310B2 (en) 1999-11-25
DE59602067D1 (de) 1999-07-08
SK165196A3 (en) 1997-07-09
NO965560L (no) 1996-12-23
CA2193358A1 (en) 1996-10-31
RO114112B1 (ro) 1999-01-29
WO1996033934A1 (de) 1996-10-31
TR199600280A2 (tr) 1997-01-21
EP0764127A1 (de) 1997-03-26
HUP9603573A2 (hu) 1999-04-28
BR9606338A (pt) 1997-08-12
CZ292838B6 (cs) 2003-12-17
NO965560D0 (no) 1996-12-23
DE19680270D2 (de) 1997-06-05
BG101064A (en) 1997-08-29
BG62647B1 (bg) 2000-04-28
MX9700039A (es) 1997-04-30
ATA71295A (de) 2001-10-15
JPH10502604A (ja) 1998-03-10

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