EP0206560A3 - Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps - Google Patents

Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps Download PDF

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Publication number
EP0206560A3
EP0206560A3 EP86304123A EP86304123A EP0206560A3 EP 0206560 A3 EP0206560 A3 EP 0206560A3 EP 86304123 A EP86304123 A EP 86304123A EP 86304123 A EP86304123 A EP 86304123A EP 0206560 A3 EP0206560 A3 EP 0206560A3
Authority
EP
European Patent Office
Prior art keywords
unbleached
peroxide
alkaline
oxygen treatment
chemical pulps
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.)
Ceased
Application number
EP86304123A
Other languages
German (de)
French (fr)
Other versions
EP0206560A2 (en
Inventor
Norman Liebergott
Barbara Van Lierop
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
Publication of EP0206560A2 publication Critical patent/EP0206560A2/en
Publication of EP0206560A3 publication Critical patent/EP0206560A3/en
Ceased legal-status Critical Current

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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

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

There are provided improvements relating to the delignification and/or the bleaching of a chemical pulp wherein the cellulosic material is simultaneously treated with an alkali compound, a peroxygen compound and an oxygen gas at partial pressure in the presence of a viscosity protecting catalyst.
EP86304123A 1985-06-17 1986-05-30 Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps Ceased EP0206560A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA484110 1985-06-17
CA000484110A CA1251903A (en) 1985-06-17 1985-06-17 Alkaline-peroxide-oxygen treatment of unbleached and chlorinated chemical pulps

Publications (2)

Publication Number Publication Date
EP0206560A2 EP0206560A2 (en) 1986-12-30
EP0206560A3 true EP0206560A3 (en) 1988-07-20

Family

ID=4130718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86304123A Ceased EP0206560A3 (en) 1985-06-17 1986-05-30 Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps

Country Status (6)

Country Link
EP (1) EP0206560A3 (en)
JP (1) JPS6253497A (en)
BR (1) BR8602790A (en)
CA (1) CA1251903A (en)
FI (1) FI862546A (en)
NO (1) NO862381L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2023916A1 (en) * 1989-11-11 1991-05-12 Augustine I Dalton Delignification of lignocellulose-containing fiber
US6231718B1 (en) 1992-02-28 2001-05-15 International Paper Company Two phase ozone and oxygen pulp treatment
SE500616C2 (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
WO2012038966A1 (en) 2010-09-22 2012-03-29 Tyche Industries Ltd. Process for the preparation of donepezil intermediate
TW201610265A (en) 2014-05-20 2016-03-16 喬治亞太平洋消費者產品公司 Bleaching and shive reduction process for non-wood fibers
TW201610261A (en) * 2014-05-20 2016-03-16 喬治亞太平洋消費者產品公司 Bleaching and shive reduction process for non-wood fibers
TW201544652A (en) 2014-05-20 2015-12-01 Georgia Pacific Consumer Prod Bleaching and shive reduction process for non-wood fibers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655505A (en) * 1965-06-25 1972-04-11 Pulp Paper Res Inst Two-stage purification of fibrous cellulose material employing gaseous chlorine dioxide in one stage and a peroxygen compound in the other
US3719552A (en) * 1971-06-18 1973-03-06 American Cyanamid Co Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide
EP0087553A1 (en) * 1982-02-27 1983-09-07 Degussa Aktiengesellschaft Process for producing half-bleached cellulose pulps
US4568420A (en) * 1984-12-03 1986-02-04 International Paper Company Multi-stage bleaching process including an enhanced oxidative extraction stage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655505A (en) * 1965-06-25 1972-04-11 Pulp Paper Res Inst Two-stage purification of fibrous cellulose material employing gaseous chlorine dioxide in one stage and a peroxygen compound in the other
US3719552A (en) * 1971-06-18 1973-03-06 American Cyanamid Co Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide
EP0087553A1 (en) * 1982-02-27 1983-09-07 Degussa Aktiengesellschaft Process for producing half-bleached cellulose pulps
US4568420A (en) * 1984-12-03 1986-02-04 International Paper Company Multi-stage bleaching process including an enhanced oxidative extraction stage
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 54, no. 3, September 1983, page 305, abstract no. 2775, Appleton, Wisconsin, US; H. KRUGER et al.: "Bleaching of sulfite pulps with peroxide and oxygen - possibilities and limitations", & TAPPI INT. SULFITE PULPING CONF. (TORONTO) PROC.: 143-148(OCT. 20-22, 1982)(Cat. D,X) *
ABSTRACT BULLETIN, vol. 56, no. 10, April 1986, page 1216, abstract no. 11066, Appleton, Wisconsin, US; D. LACHENAL et al.: "Reinforcement of oxygen-alkali extraction with hydrogen peroxide or hyprochlorite", & TAPPI PULPNG CONF. (HOLLYWOOD, FL) PROC. (BOOK 2): 439-443 (NOV. 3-7, 1985) *
PAPIER, vol. 40, no. 4, April 1986, pages 150-153, Darmstadt, DE; H.-U. S]SS: "Die peroxidgest}tzte Sauerstoff-Delignifizierung von Sulfitzellstoffen - ein Schritt zur Verringerung der AOX-Belastung" *

Also Published As

Publication number Publication date
FI862546A0 (en) 1986-06-16
BR8602790A (en) 1987-02-10
FI862546A (en) 1986-12-18
NO862381D0 (en) 1986-06-16
EP0206560A2 (en) 1986-12-30
JPS6253497A (en) 1987-03-09
CA1251903A (en) 1989-04-04
NO862381L (en) 1986-12-18

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Inventor name: LIEBERGOTT, NORMAN

Inventor name: VAN LIEROP, BARBARA