CA2062475A1 - Process for the delignification of cellulose containing raw materials - Google Patents

Process for the delignification of cellulose containing raw materials

Info

Publication number
CA2062475A1
CA2062475A1 CA 2062475 CA2062475A CA2062475A1 CA 2062475 A1 CA2062475 A1 CA 2062475A1 CA 2062475 CA2062475 CA 2062475 CA 2062475 A CA2062475 A CA 2062475A CA 2062475 A1 CA2062475 A1 CA 2062475A1
Authority
CA
Canada
Prior art keywords
cellulose
delignification
acetic acid
raw materials
extraction
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.)
Abandoned
Application number
CA 2062475
Other languages
English (en)
French (fr)
Inventor
Horst Nimz
Alex Berg
Wim Janssen
Stefan Balle
Rudolf G. Kunz
Wolfdieter Klein
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2062475A1 publication Critical patent/CA2062475A1/en
Abandoned legal-status Critical Current

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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C3/003—Pulping cellulose-containing materials with organic compounds
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
CA 2062475 1991-03-08 1992-03-06 Process for the delignification of cellulose containing raw materials Abandoned CA2062475A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914107357 DE4107357C1 (no) 1991-03-08 1991-03-08
DEP4107357.6 1991-03-08

Publications (1)

Publication Number Publication Date
CA2062475A1 true CA2062475A1 (en) 1992-09-09

Family

ID=6426711

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2062475 Abandoned CA2062475A1 (en) 1991-03-08 1992-03-06 Process for the delignification of cellulose containing raw materials

Country Status (5)

Country Link
EP (1) EP0503304A1 (no)
CA (1) CA2062475A1 (no)
DE (1) DE4107357C1 (no)
FI (1) FI920831A (no)
NO (1) NO920830L (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228171C2 (de) * 1992-08-25 1995-06-14 Kaemmerer Projekt Agentur Gmbh Verfahren zur Gewinnung von Zellstoffen
US6302997B1 (en) * 1999-08-30 2001-10-16 North Carolina State University Process for producing a pulp suitable for papermaking from nonwood fibrous materials
DE19962411A1 (de) * 1999-12-22 2001-07-05 Natural Pulping Ag Verfahren zur Gewinnung/Rückgewinnung von Carbonsäuren aus Ablaugen der Zellstoffherstellung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309551C (no) * 1916-01-14
AT83396B (de) * 1916-06-19 1921-03-25 Hermann Pauly Dr Verfahren zur Gewinnung der das sogenannte Lignin bildenden Stoffe aus zellulosehaltigen Materialien.
GB579669A (en) * 1943-11-05 1946-08-12 Stanley Charles Bate Improvements in or relating to the production of cellulose
US3553076A (en) * 1968-01-22 1971-01-05 Weyerhaeuser Co Non-catalytic process for the production of cellulose from lignocellulosic materials using acetic acid
DE3445132A1 (de) * 1984-12-11 1986-06-12 Nimz, Horst H., Prof.Dr., 2050 Hamburg Holzaufschluss mit essigsaeure
ATE90404T1 (de) * 1988-01-25 1993-06-15 Acetocell Gmbh & Co Kg Verfahren zur behandlung von lignin enthaltender cellulosemasse mit ozon.
EP0325891A1 (de) * 1988-01-25 1989-08-02 Kunz Holding Gmbh & Co. Kg Verfahren zur Gewinnung von gebleichtem Zellstoff

Also Published As

Publication number Publication date
EP0503304A1 (de) 1992-09-16
DE4107357C1 (no) 1992-11-05
FI920831A0 (fi) 1992-02-25
NO920830L (no) 1992-09-09
FI920831A (fi) 1992-09-09
NO920830D0 (no) 1992-03-03

Similar Documents

Publication Publication Date Title
US4793898A (en) Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide
US4459174A (en) Process for the delignification and bleaching of chemical and semi-chemical cellulosic pulps
US5074960A (en) Lignin removal method using ozone and acetic acid
BRPI0618527A2 (pt) uma nova polpa celulósica e processo para polpação
NO143298B (no) Friserapparat.
JPH08511308A (ja) リグノセルロース材料を脱リグニン化する改良されたオゾン／過酸法
CA2062474A1 (en) Process for the delignification of cellulose containing raw materials
US5534115A (en) Process for preserving the mechanical strength properties of chemical paper pulps
NO160325B (no) Demonterbar stolfot.
CA2062475A1 (en) Process for the delignification of cellulose containing raw materials
JPH0737720B2 (ja) リグノセルロ−ス系原料から漂白パルプを製造する方法
US5139613A (en) Process for preparing a paper pulp using carbon dioxide as an acidifying agent for a bleached pulp
JP3325324B2 (ja) 粗セルロースの脱リグニン化方法
NO149394B (no) Fremgangsmaate for aa fjerne opploest metallisk natrium fra aluminiumsmelter
US2694631A (en) Process of preparing wood pulp
US4244780A (en) Use of thiourea dioxide in pulp bleaching processes to preserve pulp strength and aid in brightness
CA1075409A (en) Ammonia-ketone pulping process
US4295928A (en) Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching
US4787959A (en) Process for preparing chemical paper pulps by cooking, intermediate grinding and a final alkaline peroxide delignification
JP2001192991A (ja) アルカリパルプの漂白方法
US5266158A (en) Process for the colour stripping and bleaching of coloured waste paper
AU5168690A (en) Bleaching of lignocellulosic material with dioxiranes
CA2062325A1 (en) Process for the bleaching of cellulose in aliphatic monocarbonic acids
CA1284557C (en) Process for preparing pulp out of lignocellulosic raw material
CA2032315C (en) Process for bleaching of chemical cellulose pulp

Legal Events

Date Code Title Description
FZDE Dead