CA2184706A1 - Impact of temperature and alkali charge on pulp brightness - Google Patents

Impact of temperature and alkali charge on pulp brightness

Info

Publication number
CA2184706A1
CA2184706A1 CA002184706A CA2184706A CA2184706A1 CA 2184706 A1 CA2184706 A1 CA 2184706A1 CA 002184706 A CA002184706 A CA 002184706A CA 2184706 A CA2184706 A CA 2184706A CA 2184706 A1 CA2184706 A1 CA 2184706A1
Authority
CA
Canada
Prior art keywords
cooking
impact
temperature
pulp brightness
alkali charge
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.)
Granted
Application number
CA002184706A
Other languages
French (fr)
Other versions
CA2184706C (en
Inventor
Nam Hee Shin
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.)
Groupe Laperriere and Verreault Inc
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 CA2184706A1 publication Critical patent/CA2184706A1/en
Application granted granted Critical
Publication of CA2184706C publication Critical patent/CA2184706C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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)
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes

Landscapes

  • Paper (AREA)
  • Pens And Brushes (AREA)
  • Glass Compositions (AREA)
  • Secondary Cells (AREA)
  • Dental Preparations (AREA)
  • Primary Cells (AREA)
  • Peptides Or Proteins (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

A method for improving pulp brightness utilizes a combination of a distributed total white liquor charge during the warm fill, hot fill and cooking stages of a batch cooking process and low cooking temperatures during the cooking stage. The high total white liquor charge ranges between 15 % AA ? 35 % AA, while the cooking temperatures range between 150 ? 168 °C.
CA002184706A 1994-03-04 1995-03-02 Impact of temperature and alkali charge on pulp brightness Expired - Fee Related CA2184706C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US20649694A 1994-03-04 1994-03-04
US08/206,496 1994-03-04
PCT/US1995/002719 WO1995023891A1 (en) 1994-03-04 1995-03-02 Impact of temperature and alkali charge on pulp brightness

Publications (2)

Publication Number Publication Date
CA2184706A1 true CA2184706A1 (en) 1995-09-08
CA2184706C CA2184706C (en) 2001-10-30

Family

ID=22766657

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002184706A Expired - Fee Related CA2184706C (en) 1994-03-04 1995-03-02 Impact of temperature and alkali charge on pulp brightness

Country Status (19)

Country Link
EP (1) EP0748412B1 (en)
JP (1) JP2876428B2 (en)
CN (1) CN1143398A (en)
AT (1) ATE172503T1 (en)
AU (1) AU684623B2 (en)
BR (1) BR9506974A (en)
CA (1) CA2184706C (en)
DE (1) DE69505503T2 (en)
ES (1) ES2126263T3 (en)
FI (1) FI118348B (en)
MX (1) MX9603876A (en)
NO (1) NO963520L (en)
NZ (1) NZ282616A (en)
PL (1) PL316144A1 (en)
RO (1) RO117929B1 (en)
RU (1) RU2127342C1 (en)
TW (1) TW270159B (en)
WO (1) WO1995023891A1 (en)
ZA (1) ZA951777B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI970254A (en) * 1997-01-22 1998-07-23 Ahlstrom Machinery Oy Method and apparatus for cooking pulp
US6139689A (en) * 1997-06-11 2000-10-31 Beloit Technologies, Inc. Apparatus for digesting pulp in a displacement batch digester that uses displacement liquor having a sufficient hydrostatic head
FI20001351A0 (en) * 2000-06-06 2000-06-06 Valmet Chemical Pulping Oy Eräkeittomenetelmä
SE0602476L (en) * 2006-11-22 2007-08-21 Metso Fiber Karlstad Ab Method for recovering heat energy from black liquor
KR20110123184A (en) 2010-05-06 2011-11-14 바히아 스페셜티 셀룰로스 에스에이 Method and system for high alpha dissolving pulp production
CN103757961B (en) * 2013-12-30 2016-01-20 汶瑞机械(山东)有限公司 A kind of batch cooking device and liquid distributing method thereof
US9644317B2 (en) 2014-11-26 2017-05-09 International Paper Company Continuous digester and feeding system
FI129440B (en) * 2020-01-15 2022-02-28 Chempolis Oy Cooking equipment and method for treating biomass containing lignocellulose

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1687076A (en) * 1927-10-12 1928-10-09 Venning D Simons Process for cooking wood chips by the alkaline process of pulp manufacture
US4578149A (en) * 1981-03-05 1986-03-25 Fagerlund Bertil K E Process for digesting cellulosic material with heat recovery
JPS6059189A (en) * 1983-08-24 1985-04-05 ベロイト　コ−ポレ−ション Multi-stage digestion of wood pulp
SU1498857A1 (en) * 1987-07-17 1989-08-07 Сибирский научно-исследовательский институт целлюлозы и картона Method of alkaline digestion of pulp in intermittent-action digesters

Also Published As

Publication number Publication date
TW270159B (en) 1996-02-11
EP0748412A1 (en) 1996-12-18
EP0748412B1 (en) 1998-10-21
JPH09505115A (en) 1997-05-20
CA2184706C (en) 2001-10-30
FI963448A (en) 1996-09-03
RU2127342C1 (en) 1999-03-10
PL316144A1 (en) 1996-12-23
CN1143398A (en) 1997-02-19
NZ282616A (en) 1997-05-26
FI118348B (en) 2007-10-15
AU1978995A (en) 1995-09-18
BR9506974A (en) 1997-09-16
AU684623B2 (en) 1997-12-18
ES2126263T3 (en) 1999-03-16
ZA951777B (en) 1995-12-11
ATE172503T1 (en) 1998-11-15
WO1995023891A1 (en) 1995-09-08
RO117929B1 (en) 2002-09-30
DE69505503D1 (en) 1998-11-26
DE69505503T2 (en) 1999-10-21
FI963448A0 (en) 1996-09-03
NO963520L (en) 1996-08-23
JP2876428B2 (en) 1999-03-31
MX9603876A (en) 1997-03-29

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed