CA895756A - Two-stage soda-oxygen pulping - Google Patents

Two-stage soda-oxygen pulping

Info

Publication number
CA895756A
CA895756A CA895756A CA895756DA CA895756A CA 895756 A CA895756 A CA 895756A CA 895756 A CA895756 A CA 895756A CA 895756D A CA895756D A CA 895756DA CA 895756 A CA895756 A CA 895756A
Authority
CA
Canada
Prior art keywords
oxygen pulping
stage soda
soda
stage
pulping
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
CA895756A
Inventor
E. Worster Hans
F. Pudek Marian
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.)
MacMillan Bloedel Ltd
Original Assignee
MacMillan Bloedel Ltd
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 MacMillan Bloedel Ltd filed Critical MacMillan Bloedel Ltd
Application granted granted Critical
Publication of CA895756A publication Critical patent/CA895756A/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
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • D21C3/263—Multistage processes at least one stage being in presence of oxygen
CA895756A 1970-04-03 1970-04-03 Two-stage soda-oxygen pulping Expired CA895756A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA79124 1970-04-03
US2800570A 1970-04-13 1970-04-13

Publications (1)

Publication Number Publication Date
CA895756A true CA895756A (en) 1972-03-21

Family

ID=25666343

Family Applications (1)

Application Number Title Priority Date Filing Date
CA895756A Expired CA895756A (en) 1970-04-03 1970-04-03 Two-stage soda-oxygen pulping

Country Status (2)

Country Link
US (1) US3691008A (en)
CA (1) CA895756A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173174A1 (en) * 1972-02-22 1973-10-05 Jujo Paper Co Ltd
FR2190974A1 (en) * 1972-07-05 1974-02-01 Mo Och Domsjoe Ab
FR2282500A1 (en) * 1974-08-20 1976-03-19 Grp Europ De Cellulose Paper pulp is de-lignified by heating with alkali - followed by oxidation with oxidising liquid and pressurised oxygen
DE2640027A1 (en) * 1975-09-05 1977-03-10 Canadian Ind PROCESS FOR STRIPPING LIGNOCELLULOSE MATERIAL
DE2833115A1 (en) * 1977-07-29 1979-02-08 Ugine Kuhlmann PROCESS FOR THE PRODUCTION OF CHEMICAL MASS FOR PAPER MAKING

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045279A (en) * 1972-01-17 1977-08-30 Toyo Pulp Co., Ltd. Process for the manufacture of pulp using sodium carbonate and oxygen
GB1449828A (en) * 1973-04-26 1976-09-15 Canadian Ind Oxygen pulping process
US3975232A (en) * 1973-11-19 1976-08-17 Westvaco Corporation Three stage process for pulping lignocellulosic materials including a cyanide ion containing first stage
JPS5143402A (en) * 1974-10-14 1976-04-14 Sanyo Kokusaku Pulp Co KOJUSHIGANJUNANYOZAI OGENRYOTOSURU SEISHO PARUPUNOSEIZOHOHO
CA1031110A (en) * 1974-12-19 1978-05-16 Macmillan Bloedel Limited High yield pulping process
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
US4338158A (en) * 1976-04-09 1982-07-06 Weyerhaeuser Company Pulping in the presence of a protector
US4172006A (en) * 1976-08-26 1979-10-23 Weyerhaeuser Company Method of delignifying wood chips with oxygen by adding cooking liquor under pressure
US4248662A (en) * 1979-01-22 1981-02-03 The Black Clawson Company Oxygen pulping with recycled liquor
US6569284B1 (en) 1996-09-24 2003-05-27 International Paper Company Elemental-chlorine-free bleaching process having an initial Eo or Eop stage
WO2011156708A1 (en) * 2010-06-10 2011-12-15 Packaging Corporation Of America Method of manufacturing pulp for corrugated medium
EP3684571A4 (en) 2017-09-08 2021-07-14 DTE Materials Incorporated Selectively depolymerizing cellulosic materials for use as thermal and acoustic insulators

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173174A1 (en) * 1972-02-22 1973-10-05 Jujo Paper Co Ltd
FR2190974A1 (en) * 1972-07-05 1974-02-01 Mo Och Domsjoe Ab
FR2282500A1 (en) * 1974-08-20 1976-03-19 Grp Europ De Cellulose Paper pulp is de-lignified by heating with alkali - followed by oxidation with oxidising liquid and pressurised oxygen
DE2640027A1 (en) * 1975-09-05 1977-03-10 Canadian Ind PROCESS FOR STRIPPING LIGNOCELLULOSE MATERIAL
DE2833115A1 (en) * 1977-07-29 1979-02-08 Ugine Kuhlmann PROCESS FOR THE PRODUCTION OF CHEMICAL MASS FOR PAPER MAKING

Also Published As

Publication number Publication date
US3691008A (en) 1972-09-12

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