EP0767848B1 - Anlage zum zerkleinern eines cellulosischen materials - Google Patents

Anlage zum zerkleinern eines cellulosischen materials Download PDF

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Publication number
EP0767848B1
EP0767848B1 EP96908908A EP96908908A EP0767848B1 EP 0767848 B1 EP0767848 B1 EP 0767848B1 EP 96908908 A EP96908908 A EP 96908908A EP 96908908 A EP96908908 A EP 96908908A EP 0767848 B1 EP0767848 B1 EP 0767848B1
Authority
EP
European Patent Office
Prior art keywords
pulp
cellulosic material
cellulose
crushing
plant
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.)
Revoked
Application number
EP96908908A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0767848A1 (de
Inventor
Stefan Zikeli
Dieter Eichinger
Peter Hinterholzer
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3502658&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0767848(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lenzing AG, Chemiefaser Lenzing AG filed Critical Lenzing AG
Publication of EP0767848A1 publication Critical patent/EP0767848A1/de
Application granted granted Critical
Publication of EP0767848B1 publication Critical patent/EP0767848B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/066—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being pulp sheets

Definitions

  • the invention relates to a plant for comminuting a cellulosic material, with a first device for pre-shredding the cellulosic material, at least one further device for further shredding the pre-shredded, cellulosic Materials, and a delivery line for the pre-shredded, cellulosic material, which the connects the first device and the at least one further device with one another Provided that there is no branch in the delivery line for pre-shredded, cellulosic Material is provided.
  • 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.
  • EP-A-0 356 419 describes an amine oxide process Preparation of spinnable cellulose solutions described, which as starting material a suspension of cellulose in liquid, aqueous N-methylmorpholine-N-oxide (NMMO) used.
  • NMMO N-methylmorpholine-N-oxide
  • This method consists in that the suspension in one Thin film treatment apparatus in one step and continuously in a malleable solution is transferred.
  • the malleable solution is finally in a mold, e.g. a spinneret, spun into filaments that passed through a precipitation bath become.
  • cellulose solution serves as a suspension of Cellulose in aqueous, tertiary amine oxide. This suspension is made by crushing cellulose and into one Mixer is introduced into the aqueous amine oxide solution.
  • WO 94/28217 describes a method for producing a Premix based on crushed pulp known which can be made into a moldable cellulose solution.
  • Cellulose in roll form serves as the starting material.
  • the Pulp is crushed in a cutter, and the shredded pulp is broken down into air by means of air Blown cellulose separator, in which the crushed Pulp is separated into two fractions: a first Fraction with a maximum particle size of 2.54 mm, and into a dust fraction.
  • the dust fraction is from the Conveyed air entrained and only in a filter from this Cut. Then the filtered dust fraction reunited with the first fraction and ready for manufacture the cellulose suspension used.
  • a system of the type described in the opening paragraph is known, for example, from US Pat. No. 3,692,246 known.
  • pulp is crushed to a Continuous flow of shredded pulp to produce Absorption products, e.g. To produce baby diapers.
  • the pulp arrives at the known device directly in the pre-shredding device.
  • WO-A-94/28233 describes a plant by means of which cellulose for production of cellulosic fibers is shredded using a shredder. The pulp arrives also directly into the shredding unit.
  • the invention has for its object to provide a system of the type described above, with which the disadvantages mentioned above can be overcome.
  • the plant according to the invention for comminuting a cellulosic material is characterized by a chute that opens into the first device.
  • a preferred embodiment of the system according to the invention is that means are provided with which cellulose in sheet form or cellulose in roll form in the Discharge chute can be introduced.
  • a preferred embodiment of the invention is with the attached drawing explained in more detail.
  • the drawing shows an embodiment of the device according to the invention with a two-stage pulp shredding.
  • the starting material is cellulose in sheet form as well as in Roll form used.
  • pulp in sheet form 800 mm x 600 mm
  • Conveyor belt 3 is transported in a direction that in the Figure indicated above the leaf pulp 1 with an arrow is.
  • the motor for driving the conveyor belt is not shown.
  • a holding and pushing device which in the figure with the reference numerals 4 and 5 is indicated, the Depending on requirements, cellulose sheets 1 in the chute 6 thrown and from the granulator 9 (type Condux CS 500/1000; Perforated screen> 0.75 mm). That way Pulp fed discontinuously.
  • the chute 6 is also pulp in roll form (800th mm wide).
  • metal detectors 7 and 8 are metal detectors designated, with which it can be determined whether in Pulp pieces of metal, such as remnants of Metal tapes that are commonly used to package the pulp are used, are present. Become pieces of metal detected, the metal detectors switch the granulator 9 and the conveyor belt 3 or the feed device 10 from to prevent the knives of the granulator 9 from being damaged become.
  • the pulp pre-comminuted in the granulator 9 enters the pipeline 12 (diameter: 150 mm), where it is caught by an air flow generated by the fan 11.
  • the air flow is expediently set with the fan 11 to a value between 20 and 25 m / s, the loading of the air flow with pre-shredded pulp depending on the particle size being between 0.25 and 2.5 kg / m 3 of air.
  • the pre-shredded pulp is released into the cyclone by the air flow 13 blown, in which the pre-shredded pulp from Conveying gas settles.
  • the feed gas is in via line 14 in the discharge chute 6 out.
  • the pre-shredded pulp gets from the cyclone 13 into the second granulator 15 (CS 500/1000; screen perforation ⁇ 20 mm), in which the pre-shredded pulp to the desired Particle size is further reduced.
  • the crushed Pulp finally gets into the delivery line 16, in which is the pulp from the airflow, that from a fan 17 is generated, carried away and for example in one Storage container (not shown) can be promoted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Disintegrating Or Milling (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Artificial Filaments (AREA)
  • Paper (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Saccharide Compounds (AREA)
EP96908908A 1995-05-30 1996-04-02 Anlage zum zerkleinern eines cellulosischen materials Revoked EP0767848B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT910/95 1995-05-30
AT91095 1995-05-30
AT0091095A AT402306B (de) 1995-05-30 1995-05-30 Verfahren und anlage zum zerkleinern eines cellulosischen materials
PCT/AT1996/000064 WO1996038625A1 (de) 1995-05-30 1996-04-02 Verfahren und anlage zum zerkleinern eines cellulosischen materials

Publications (2)

Publication Number Publication Date
EP0767848A1 EP0767848A1 (de) 1997-04-16
EP0767848B1 true EP0767848B1 (de) 1999-07-21

Family

ID=3502658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96908908A Revoked EP0767848B1 (de) 1995-05-30 1996-04-02 Anlage zum zerkleinern eines cellulosischen materials

Country Status (9)

Country Link
EP (1) EP0767848B1 (no)
JP (1) JPH10503562A (no)
AT (2) AT402306B (no)
AU (1) AU5260196A (no)
BR (1) BR9606401A (no)
CA (1) CA2195409A1 (no)
DE (1) DE59602474D1 (no)
NO (1) NO970364D0 (no)
WO (1) WO1996038625A1 (no)

Families Citing this family (3)

* 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
JP4596520B2 (ja) * 2004-08-25 2010-12-08 株式会社リブドゥコーポレーション パルプ粉砕装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692246A (en) * 1971-06-14 1972-09-19 Williams Patent Crusher & Pulv Fluff preparation system and apparatus
US5375780A (en) * 1993-05-24 1994-12-27 Courtaulds Fibres (Holdings) Ltd. Comminuting wood pulp sheeting

Also Published As

Publication number Publication date
NO970364L (no) 1997-01-28
NO970364D0 (no) 1997-01-28
AT402306B (de) 1997-04-25
WO1996038625A1 (de) 1996-12-05
BR9606401A (pt) 1997-12-23
EP0767848A1 (de) 1997-04-16
JPH10503562A (ja) 1998-03-31
ATA91095A (de) 1996-08-15
DE59602474D1 (de) 1999-08-26
CA2195409A1 (en) 1996-12-05
AU5260196A (en) 1996-12-18
ATE182378T1 (de) 1999-08-15

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