PT92695B - Processo de branqueamento com peroxido de hidrogenio - Google Patents

Processo de branqueamento com peroxido de hidrogenio Download PDF

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Publication number
PT92695B
PT92695B PT92695A PT9269589A PT92695B PT 92695 B PT92695 B PT 92695B PT 92695 A PT92695 A PT 92695A PT 9269589 A PT9269589 A PT 9269589A PT 92695 B PT92695 B PT 92695B
Authority
PT
Portugal
Prior art keywords
pulp
hydrogen peroxide
bleaching
approximately
process according
Prior art date
Application number
PT92695A
Other languages
English (en)
Portuguese (pt)
Other versions
PT92695A (pt
Inventor
Tadas Stepas Macas
Gregory John Siminoski
Original Assignee
Canadian Ind
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 Canadian Ind filed Critical Canadian Ind
Publication of PT92695A publication Critical patent/PT92695A/pt
Publication of PT92695B publication Critical patent/PT92695B/pt

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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
PT92695A 1988-12-23 1989-12-22 Processo de branqueamento com peroxido de hidrogenio PT92695B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/289,309 US4915785A (en) 1988-12-23 1988-12-23 Single stage process for bleaching of pulp with an aqueous hydrogen peroxide bleaching composition containing magnesium sulphate and sodium silicate

Publications (2)

Publication Number Publication Date
PT92695A PT92695A (pt) 1990-06-29
PT92695B true PT92695B (pt) 1995-09-12

Family

ID=23110972

Family Applications (1)

Application Number Title Priority Date Filing Date
PT92695A PT92695B (pt) 1988-12-23 1989-12-22 Processo de branqueamento com peroxido de hidrogenio

Country Status (12)

Country Link
US (1) US4915785A (d)
JP (1) JPH03137287A (d)
AU (1) AU623465B2 (d)
CA (1) CA2005599A1 (d)
FI (1) FI896119A7 (d)
FR (1) FR2641010B1 (d)
GB (1) GB2227759B (d)
NO (1) NO895234L (d)
NZ (1) NZ231760A (d)
PT (1) PT92695B (d)
SE (1) SE8904313L (d)
ZA (1) ZA899502B (d)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118389A (en) * 1990-07-06 1992-06-02 Ici Canada Inc. Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp
US5302245A (en) * 1991-04-02 1994-04-12 Vps Technology Partnership Integrated wastepaper treatment process
US5223091A (en) * 1991-11-25 1993-06-29 Macmillan Bloedel Limited Method of brightening mechanical pulp using silicate-free peroxide bleaching
US5205907A (en) * 1991-11-25 1993-04-27 Macmillan Bloedel Limited Removal of manganese from pulp using a chelating agent and magnesium sulphate
CA2082557C (en) * 1992-02-24 1997-03-11 Charles W. Hankins Integrated pulping process of waste paper yielding tissue-grade paper fibers
US5364465A (en) * 1992-12-07 1994-11-15 Archer Daniels Midland Company Method of producing protein products for bright paper coating applications
US5667575A (en) * 1995-09-21 1997-09-16 Eastman Chemical Company Process for reducing the color of an emulsion containing functionalized polyolefin wax
US6023065A (en) * 1997-03-10 2000-02-08 Alberta Research Council Method and apparatus for monitoring and controlling characteristics of process effluents
US6059927A (en) 1997-09-23 2000-05-09 Queen's University At Kingston Method of reducing brightness reversion and yellowness (B*) of bleached mechanical wood pulps
EP1088130B1 (en) * 1998-05-15 2004-03-31 National Silicates Partnership Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps
US6699358B1 (en) 1998-05-15 2004-03-02 National Silicates Partnership Method for brightening chemical pulp with hydrogen peroxide using a magnesium compound in silicate solution
US6325892B1 (en) 1998-09-23 2001-12-04 University Of New Brunswick Method of delignifying sulphite pulp with oxygen and borohydride
US7052578B2 (en) * 2000-01-28 2006-05-30 Martin Marietta Magnesia Specialties, Inc. Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp
US6899790B2 (en) 2000-03-06 2005-05-31 Georgia-Pacific Corporation Method of providing papermaking fibers with durable curl
US6627041B2 (en) * 2000-03-06 2003-09-30 Georgia-Pacific Corporation Method of bleaching and providing papermaking fibers with durable curl
US7001484B2 (en) * 2000-05-04 2006-02-21 University Of New Brunswick Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent
US7297225B2 (en) * 2004-06-22 2007-11-20 Georgia-Pacific Consumer Products Lp Process for high temperature peroxide bleaching of pulp with cool discharge
US8138106B2 (en) 2005-09-30 2012-03-20 Rayonier Trs Holdings Inc. Cellulosic fibers with odor control characteristics
US7556696B2 (en) 2007-02-15 2009-07-07 Westinghouse Electric Co Llc Removal of niobium second phase particle deposits from pickled zirconium-niobium alloys
US9476014B2 (en) 2013-02-14 2016-10-25 II Joseph M. Galimi Method for cleaning surfaces
EP4305235A1 (en) * 2021-03-08 2024-01-17 Trifilon AB Apparatus and process for delignification and bleaching of fibres
US20230265609A1 (en) * 2022-02-22 2023-08-24 Gpcp Ip Holdings Llc High yield chemical pulping and bleaching process
CN117187811A (zh) * 2023-08-29 2023-12-08 西安理工大学 不锈钢刻蚀液及不锈钢表面微结构刻蚀方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB758611A (en) * 1953-09-24 1956-10-03 Pennsylvania Salt Mfg Co Stabilization of solutions containing peroxygen compounds
NL293489A (d) * 1962-07-16
CA783483A (en) * 1964-08-13 1968-04-23 Electric Reduction Company Of Canada Processes for bleaching cellulosic pulps
US3740187A (en) * 1971-06-03 1973-06-19 Monsanto Co Processes for bleaching textiles
US4029543A (en) * 1971-12-14 1977-06-14 Mo Och Domsjo Mechanically freeing wood fibers in the presence of spent peroxide bleaching liquor
US3951594A (en) * 1972-11-27 1976-04-20 Pennwalt Corporation Hydrogen peroxide bleaching solutions and process
JPS583074B2 (ja) * 1975-11-17 1983-01-19 三菱瓦斯化学株式会社 パルプノ カサンカブツヒヨウハクホウ
CA1151363A (en) * 1979-04-17 1983-08-09 Henri Lemoyne Process for the delignification of unbleached chemical pulp

Also Published As

Publication number Publication date
GB8928875D0 (en) 1990-02-28
FR2641010B1 (d) 1992-03-13
ZA899502B (en) 1990-09-26
GB2227759A (en) 1990-08-08
SE8904313D0 (sv) 1989-12-21
FR2641010A1 (d) 1990-06-29
FI896119A7 (fi) 1990-06-24
PT92695A (pt) 1990-06-29
US4915785A (en) 1990-04-10
NO895234L (no) 1990-06-25
NO895234D0 (no) 1989-12-22
SE8904313L (sv) 1990-06-24
CA2005599A1 (en) 1990-06-23
GB2227759B (en) 1992-05-20
FI896119A0 (fi) 1989-12-20
JPH03137287A (ja) 1991-06-11
AU623465B2 (en) 1992-05-14
NZ231760A (en) 1991-04-26
AU4715989A (en) 1990-06-28

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FG3A Patent granted, date of granting

Effective date: 19950510

MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19961130