SE8504083D0 - METHOD OF PRODUCING CELLULOSAMASSA - Google Patents

METHOD OF PRODUCING CELLULOSAMASSA

Info

Publication number
SE8504083D0
SE8504083D0 SE8504083A SE8504083A SE8504083D0 SE 8504083 D0 SE8504083 D0 SE 8504083D0 SE 8504083 A SE8504083 A SE 8504083A SE 8504083 A SE8504083 A SE 8504083A SE 8504083 D0 SE8504083 D0 SE 8504083D0
Authority
SE
Sweden
Prior art keywords
raw material
fibrous raw
pressure vessel
sodium carbonate
pressure
Prior art date
Application number
SE8504083A
Other languages
Swedish (sv)
Other versions
SE455314B (en
SE8504083L (en
Inventor
Punya B Chaudhuri
Original Assignee
Punya B Chaudhuri
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 Punya B Chaudhuri filed Critical Punya B Chaudhuri
Priority to SE8504083A priority Critical patent/SE455314B/en
Publication of SE8504083D0 publication Critical patent/SE8504083D0/en
Priority to PCT/SE1986/000389 priority patent/WO1987001402A1/en
Publication of SE8504083L publication Critical patent/SE8504083L/en
Publication of SE455314B publication Critical patent/SE455314B/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
    • 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
    • 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
    • D21B1/30—Defibrating by other means
    • D21B1/36—Explosive disintegration by sudden pressure reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

A method for the production of cellulosic pulp comprises defibration of a fibrous raw material consisting of wood chips, straw, bagasse, reed or the like. The fibrous raw material is impregnated by an aqueous solution of sodium carbonate. The fibrous raw material impregnated with sodium carbonate is fed to a pressure vessel (5). The material in the pressure vessel (5) is acidified by supplying sulphur dioxide to the pressure vessel (5), said sulphur dioxide reacting with said sodium carbonate to generate sodium sulphite and carbon dioxide, said reaction at least partly taking place in situ in the fibrous raw material. The material in the pressure vessel (5) thereafter for a short period of time is heated by saturated steam at a pressure of 20-100 bar, which further promotes said reaction. Thereafter the material is rapidly discharged and caused to expand in a second vessel (22) under a substantially lower and substantially constant pressure.
SE8504083A 1985-09-03 1985-09-03 PREPARATION OF CELLULOSAMASA INCLUDING CHEMICAL PREPARATION AND DEFIBRATION BY EXPANSION SE455314B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8504083A SE455314B (en) 1985-09-03 1985-09-03 PREPARATION OF CELLULOSAMASA INCLUDING CHEMICAL PREPARATION AND DEFIBRATION BY EXPANSION
PCT/SE1986/000389 WO1987001402A1 (en) 1985-09-03 1986-09-02 Method for producing of cellulosic pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8504083A SE455314B (en) 1985-09-03 1985-09-03 PREPARATION OF CELLULOSAMASA INCLUDING CHEMICAL PREPARATION AND DEFIBRATION BY EXPANSION

Publications (3)

Publication Number Publication Date
SE8504083D0 true SE8504083D0 (en) 1985-09-03
SE8504083L SE8504083L (en) 1987-03-04
SE455314B SE455314B (en) 1988-07-04

Family

ID=20361275

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8504083A SE455314B (en) 1985-09-03 1985-09-03 PREPARATION OF CELLULOSAMASA INCLUDING CHEMICAL PREPARATION AND DEFIBRATION BY EXPANSION

Country Status (2)

Country Link
SE (1) SE455314B (en)
WO (1) WO1987001402A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1230208A (en) * 1987-03-24 1987-12-15 Bohuslav V. Kokta Process for preparing pulp for paper making
CA2037275A1 (en) * 1991-02-28 1992-08-29 Bohuslav V. Kokta Steam explosion pulping process for papermaking
BR9916641A (en) 1998-12-30 2001-09-25 Kimberly Clark Co Steam blast recycling process for fibers and fabrics made from recycled fibers
US6413362B1 (en) 1999-11-24 2002-07-02 Kimberly-Clark Worldwide, Inc. Method of steam treating low yield papermaking fibers to produce a permanent curl
EP1571255A1 (en) * 2004-03-03 2005-09-07 SCA Hygiene Products GmbH Apparatus and method for reducing steam loss in a closed system
JP2012525447A (en) 2009-04-30 2012-10-22 イヴ リサーチ インコーポレイテッド Preparation of biofuel and other useful products such as 5- (hydroxymethyl) -furfural
NZ578113A (en) * 2009-07-01 2010-07-30 Lignotech Developments Ltd Processing of lignocellulosic and related materials
EP2336344A1 (en) * 2009-12-21 2011-06-22 Sekab E-Technology AB Pre-treatment of cellulosic material
CN104562827B (en) * 2014-12-11 2016-06-01 陕西科技大学 The dynamic shaping device of a kind of laboratory simulation long mesh paper making machine
US20220145535A1 (en) * 2019-03-20 2022-05-12 Ymir Technologies Ehf. Steam-explosion equipment and method for treatment of organic material
WO2021110188A1 (en) * 2019-12-03 2021-06-10 Klingele Papierwerke Gmbh & Co. Kg Method and device for producing fibrous material with a feed system and a helical screw system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1872996A (en) * 1925-05-21 1932-08-23 Masonite Corp Process of making paper pulp
US2234188A (en) * 1938-03-31 1941-03-11 Masonite Corp Process of making light-colored ligno-cellulose fiber
NZ187047A (en) * 1977-04-27 1981-03-16 Commw Scient Ind Res Org Explosive defibration of cellulosic plant material material passes through nozzle providing tortuous path for discharging material

Also Published As

Publication number Publication date
SE455314B (en) 1988-07-04
WO1987001402A1 (en) 1987-03-12
SE8504083L (en) 1987-03-04

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