CA873779A - Vapour phase polysulphide pulping process - Google Patents

Vapour phase polysulphide pulping process

Info

Publication number
CA873779A
CA873779A CA873779A CA873779DA CA873779A CA 873779 A CA873779 A CA 873779A CA 873779 A CA873779 A CA 873779A CA 873779D A CA873779D A CA 873779DA CA 873779 A CA873779 A CA 873779A
Authority
CA
Canada
Prior art keywords
vapour phase
pulping process
polysulphide
polysulphide pulping
vapour
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
Application number
CA873779A
Inventor
Sakai Asahi
W. Clayton David
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.)
Pulp and Paper Research Institute of Canada
Original Assignee
Pulp and Paper Research Institute of Canada
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 Pulp and Paper Research Institute of Canada filed Critical Pulp and Paper Research Institute of Canada
Application granted granted Critical
Publication of CA873779A publication Critical patent/CA873779A/en
Expired 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
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
CA873779A 1969-12-09 1969-12-12 Vapour phase polysulphide pulping process Expired CA873779A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88347569A 1969-12-09 1969-12-09
CA69707 1969-12-12

Publications (1)

Publication Number Publication Date
CA873779A true CA873779A (en) 1971-06-22

Family

ID=25666226

Family Applications (1)

Application Number Title Priority Date Filing Date
CA873779A Expired CA873779A (en) 1969-12-09 1969-12-12 Vapour phase polysulphide pulping process

Country Status (2)

Country Link
US (1) US3664919A (en)
CA (1) CA873779A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6241851B1 (en) 1998-03-03 2001-06-05 Andritz-Ahlstrom Inc. Treatment of cellulose material with additives while producing cellulose pulp
US6569289B2 (en) 1999-09-13 2003-05-27 Andritz Inc. Cellulose slurry treating systems for adding AQ to a cellulose slurry in the substantial absence of alkali

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661696B1 (en) * 1990-05-07 1992-07-10 Tag Pulp Ind METHOD AND INSTALLATION OF COOKING WITH PREHEATING OF LIGNOCELLULOSIC MATERIALS IN SOLID PHASE.
US5369601A (en) * 1993-01-11 1994-11-29 Tannenbaum; Gail Method and apparatus for equestrian monitoring for instruction and training
SE9703365D0 (en) * 1997-09-18 1997-09-18 Kvaerner Pulping Tech Method in connection with impregnation and digestion of lignocelulosic material
US6153052A (en) * 1998-10-09 2000-11-28 Pulp And Paper Research Institute Of Canada Pulping process
WO2000077295A1 (en) 1999-06-15 2000-12-21 Kawasaki Kasei Chemicals Ltd. Digestion method for pulp
US7828930B2 (en) * 2007-11-20 2010-11-09 International Paper Company Use of polysulfide in modified cooking
US8216809B2 (en) * 2008-12-19 2012-07-10 E I Du Pont De Nemours And Company Organic solvent pretreatment of biomass to enhance enzymatic saccharification
US20100159522A1 (en) * 2008-12-19 2010-06-24 E.I. De Pont De Nemours And Company Organosolv and ozone treatment of biomass to enhance enzymatic saccharification
FI127420B (en) 2011-06-23 2018-05-31 Andritz Oy Process for producing cellulose pulp
JP5989777B2 (en) 2011-08-30 2016-09-07 ヴァルメト アクチボラグ Kraft cooking using polysulfide cooking liquor
US9580864B2 (en) 2011-08-30 2017-02-28 Valmet Ab Kraft cooking method using polysulfide cooking liquor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1810398A (en) * 1929-05-27 1931-06-16 Paul E Hodgdon Method of and apparatus for digesting wood
US2093267A (en) * 1934-11-20 1937-09-14 Chemipulp Process Inc Treatment of fibrous material
US2673690A (en) * 1951-10-27 1954-03-30 Hercules Powder Co Ltd Method for the digestion of cellulose-bearing material
US2944928A (en) * 1957-09-20 1960-07-12 Kibrick Method of preparing paper pulp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6241851B1 (en) 1998-03-03 2001-06-05 Andritz-Ahlstrom Inc. Treatment of cellulose material with additives while producing cellulose pulp
US6569289B2 (en) 1999-09-13 2003-05-27 Andritz Inc. Cellulose slurry treating systems for adding AQ to a cellulose slurry in the substantial absence of alkali
US6576084B1 (en) 1999-09-13 2003-06-10 Andritz Inc. Method of pretreating pulp with yield or strength-enhancing additive

Also Published As

Publication number Publication date
US3664919A (en) 1972-05-23

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