ATE144011T1 - PRODUCTION OF CHEMO-MECHANICAL AND/OR CHEMO-THERMO-MECHANICAL WOOD MATERIALS - Google Patents

PRODUCTION OF CHEMO-MECHANICAL AND/OR CHEMO-THERMO-MECHANICAL WOOD MATERIALS

Info

Publication number
ATE144011T1
ATE144011T1 AT94910362T AT94910362T ATE144011T1 AT E144011 T1 ATE144011 T1 AT E144011T1 AT 94910362 T AT94910362 T AT 94910362T AT 94910362 T AT94910362 T AT 94910362T AT E144011 T1 ATE144011 T1 AT E144011T1
Authority
AT
Austria
Prior art keywords
chemo
mechanical
raw materials
thermo
production
Prior art date
Application number
AT94910362T
Other languages
German (de)
Inventor
Rudolf Patt
Jens Neumann
Original Assignee
Feldmuehle Ag Stora
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 Feldmuehle Ag Stora filed Critical Feldmuehle Ag Stora
Application granted granted Critical
Publication of ATE144011T1 publication Critical patent/ATE144011T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
    • 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
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Paper (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Processing Of Solid Wastes (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

A process is disclosed for producing chemomechanical and/or chemothermomechanical wood products from lignocellulosic raw materials, such as wood chips. The raw materials are impregnated with a SO2-containing solution and then subjected to a sulfonating reaction in a gaseous or vapour phase at a pH value equal to 2 or less. When the sulfonating reaction is finished, the raw materials or wood chips are defibrated in a defibrating unit known per se and are crushed down to a preselected fineness degree. The wood product thus obtained is characterized by remarkable solidity and by requiring a reduced specific crushing energy.
AT94910362T 1993-03-11 1994-03-03 PRODUCTION OF CHEMO-MECHANICAL AND/OR CHEMO-THERMO-MECHANICAL WOOD MATERIALS ATE144011T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4307660A DE4307660C1 (en) 1993-03-11 1993-03-11 Manufacture of chemo-mechanical and / or chemo-thermo-mechanical wood materials

Publications (1)

Publication Number Publication Date
ATE144011T1 true ATE144011T1 (en) 1996-10-15

Family

ID=6482482

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94910362T ATE144011T1 (en) 1993-03-11 1994-03-03 PRODUCTION OF CHEMO-MECHANICAL AND/OR CHEMO-THERMO-MECHANICAL WOOD MATERIALS

Country Status (10)

Country Link
EP (1) EP0688373B1 (en)
JP (1) JPH08507333A (en)
AT (1) ATE144011T1 (en)
CA (1) CA2157886A1 (en)
DE (2) DE4307660C1 (en)
DK (1) DK0688373T3 (en)
ES (1) ES2095755T3 (en)
FI (1) FI954231A (en)
NO (1) NO953389D0 (en)
WO (1) WO1994020670A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057208A1 (en) * 2009-11-27 2011-06-01 Technische Universität Dresden Process for the production of lignocellulosic paper pulps and papers, cartons and boards derived therefrom

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1517169A1 (en) * 1963-05-21 1969-10-09 Defibrator Aktiebolaget Process for the production of chemical-mechanical fibers by heating and defibering of wood chips impregnated with sulfite solutions in a steam atmosphere under pressure and at elevated temperature
DE2445523A1 (en) * 1974-09-24 1976-04-01 Waldhof Aschaffenburg Papier METHOD FOR MANUFACTURING PULP
SE404044B (en) * 1975-11-13 1978-09-18 Mo Och Domsjoe Ab LIGHT ABSORBING LIGNIRIK HOGUTYTESCELLULOSAMASSA AND PROCEDURES FOR THE PREPARATION OF THIS
US4211605A (en) * 1978-08-03 1980-07-08 Canadian International Paper Company High yield chemimechanical pulping processes
US4634499A (en) * 1983-05-02 1987-01-06 The Procter & Gamble Company Sulfite process for making pulp having a tactile softness from hardwood chips
DE3932347A1 (en) * 1989-09-28 1991-04-11 Feldmuehle Ag PRODUCTION OF CHEMO-MECHANICAL AND / OR CHEMO-THERMO-MECHANICAL WOODEN MATERIALS
SE9002039D0 (en) * 1990-06-07 1990-06-07 Svenska Traeforskningsinst SAVE TO PREPARE

Also Published As

Publication number Publication date
NO953389L (en) 1995-08-29
JPH08507333A (en) 1996-08-06
DE4307660C1 (en) 1994-08-04
CA2157886A1 (en) 1994-09-15
WO1994020670A1 (en) 1994-09-15
EP0688373B1 (en) 1996-10-09
ES2095755T3 (en) 1997-02-16
EP0688373A1 (en) 1995-12-27
FI954231A0 (en) 1995-09-08
NO953389D0 (en) 1995-08-29
DK0688373T3 (en) 1997-03-24
FI954231A (en) 1995-09-08
DE59400830D1 (en) 1996-11-14

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee