CA2049322C - Process for preparing kraft pulp - Google Patents

Process for preparing kraft pulp Download PDF

Info

Publication number
CA2049322C
CA2049322C CA002049322A CA2049322A CA2049322C CA 2049322 C CA2049322 C CA 2049322C CA 002049322 A CA002049322 A CA 002049322A CA 2049322 A CA2049322 A CA 2049322A CA 2049322 C CA2049322 C CA 2049322C
Authority
CA
Canada
Prior art keywords
cellulosic material
cooking liquor
spent
temperature
cooking
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
CA002049322A
Other languages
English (en)
French (fr)
Other versions
CA2049322A1 (en
Inventor
Panu Tikka
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.)
GL&V Management Hungary Kft
Original Assignee
Metso Chemical Pulping Oy
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=8529860&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2049322(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metso Chemical Pulping Oy filed Critical Metso Chemical Pulping Oy
Publication of CA2049322A1 publication Critical patent/CA2049322A1/en
Application granted granted Critical
Publication of CA2049322C publication Critical patent/CA2049322C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • 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
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)

Landscapes

  • Inorganic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Paper (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Noodles (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Holo Graphy (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Insulating Materials (AREA)
CA002049322A 1990-02-09 1991-02-11 Process for preparing kraft pulp Expired - Lifetime CA2049322C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI900663A FI93866B (fi) 1990-02-09 1990-02-09 Menetelmä sulfaattimassan valmistamiseksi
FI900663 1990-02-09
PCT/FI1991/000043 WO1991012368A1 (en) 1990-02-09 1991-02-11 Process for preparing kraft pulp

Publications (2)

Publication Number Publication Date
CA2049322A1 CA2049322A1 (en) 1991-08-10
CA2049322C true CA2049322C (en) 2002-08-20

Family

ID=8529860

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002049322A Expired - Lifetime CA2049322C (en) 1990-02-09 1991-02-11 Process for preparing kraft pulp

Country Status (14)

Country Link
EP (1) EP0468016B1 (de)
JP (1) JP2900091B2 (de)
AT (1) ATE141351T1 (de)
AU (1) AU639304B2 (de)
BR (1) BR9104333A (de)
CA (1) CA2049322C (de)
DE (1) DE69121332T2 (de)
ES (1) ES2091319T3 (de)
FI (1) FI93866B (de)
NO (1) NO178935C (de)
NZ (1) NZ236941A (de)
PT (1) PT96713B (de)
WO (1) WO1991012368A1 (de)
ZA (1) ZA91958B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469842C (sv) * 1992-01-21 1996-01-15 Sunds Defibrator Ind Ab Blekning av kemisk massa med peroxid
NZ247276A (en) * 1992-04-06 1994-12-22 Westvaco Corp Production of papermaking fibre of low lignin content from recycled high lignin waste paper; mixtures with fresh pulp and products produced therefrom
FI970254A (fi) * 1997-01-22 1998-07-23 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan keittämiseksi
FI20002587A (fi) * 2000-11-24 2002-05-25 Metso Paper Inc Alkalinen keittomenetelmä kuitumateriaalille
FI20002586A (fi) * 2000-11-24 2002-05-25 Metso Paper Inc Alkalinen eräkeittomenetelmä kuitumateriaalille
KR20110123184A (ko) 2010-05-06 2011-11-14 바히아 스페셜티 셀룰로스 에스에이 높은 알파 용해 펄프 제조를 위한 방법 및 시스템
AR091998A1 (es) 2012-05-03 2015-03-18 Annikki Gmbh Procedimiento de preparacion de celulosa con baja concentracion de lignina
KR102143773B1 (ko) * 2018-10-25 2020-08-12 한국세라믹기술원 리그노셀룰로오스 바이오매스를 이용한 부분결정성 활성탄의 제조방법 및 상기 부분결정성 활성탄을 이용한 슈퍼커패시터의 제조방법
KR102157512B1 (ko) * 2018-11-16 2020-09-18 한국세라믹기술원 리그노셀룰로오스 바이오매스를 이용한 구형의 다공성 활성탄 제조방법 및 이를 이용한 슈퍼커패시터의 제조방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE101369C1 (de) *
US1687076A (en) * 1927-10-12 1928-10-09 Venning D Simons Process for cooking wood chips by the alkaline process of pulp manufacture
US2639987A (en) * 1947-07-09 1953-05-26 Ass Pulp & Paper Mills Two-stage pulping process
US4578149A (en) * 1981-03-05 1986-03-25 Fagerlund Bertil K E Process for digesting cellulosic material with heat recovery

Also Published As

Publication number Publication date
BR9104333A (pt) 1992-04-21
PT96713B (pt) 2001-05-31
JPH04505485A (ja) 1992-09-24
AU7218991A (en) 1991-09-03
CA2049322A1 (en) 1991-08-10
EP0468016B1 (de) 1996-08-14
EP0468016A1 (de) 1992-01-29
FI900663A (fi) 1991-08-10
DE69121332T2 (de) 1997-03-13
ES2091319T3 (es) 1996-11-01
NO913873L (no) 1991-10-02
NO913873D0 (no) 1991-10-02
AU639304B2 (en) 1993-07-22
DE69121332D1 (de) 1996-09-19
WO1991012368A1 (en) 1991-08-22
NO178935C (no) 2000-06-26
ATE141351T1 (de) 1996-08-15
FI93866B (fi) 1995-02-28
JP2900091B2 (ja) 1999-06-02
NO178935B (no) 1996-03-25
PT96713A (pt) 1991-10-31
FI900663A0 (fi) 1990-02-09
ZA91958B (en) 1991-11-27
NZ236941A (en) 1993-10-26

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