CA1120210A - Bleaching of pulp - Google Patents

Bleaching of pulp

Info

Publication number
CA1120210A
CA1120210A CA000328345A CA328345A CA1120210A CA 1120210 A CA1120210 A CA 1120210A CA 000328345 A CA000328345 A CA 000328345A CA 328345 A CA328345 A CA 328345A CA 1120210 A CA1120210 A CA 1120210A
Authority
CA
Canada
Prior art keywords
pulp
alkali metal
metal salt
concentration
salt
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
CA000328345A
Other languages
English (en)
French (fr)
Inventor
Bronislav H. May
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.)
Solutia Inc
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Application granted granted Critical
Publication of CA1120210A publication Critical patent/CA1120210A/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
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Cereal-Derived Products (AREA)
CA000328345A 1978-05-26 1979-05-25 Bleaching of pulp Expired CA1120210A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB22901/78 1978-05-26
GB2290178 1978-05-26

Publications (1)

Publication Number Publication Date
CA1120210A true CA1120210A (en) 1982-03-23

Family

ID=10186899

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000328345A Expired CA1120210A (en) 1978-05-26 1979-05-25 Bleaching of pulp

Country Status (7)

Country Link
AU (1) AU528265B2 (sv)
CA (1) CA1120210A (sv)
FI (1) FI71177C (sv)
FR (1) FR2426767A1 (sv)
NO (1) NO153309C (sv)
SE (1) SE7904430L (sv)
ZA (1) ZA792563B (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102229619A (zh) * 2011-04-26 2011-11-02 河南清水源科技股份有限公司 四乙烯五胺七亚甲基膦酸及其生产工艺
US11193237B2 (en) 2017-09-11 2021-12-07 Solenis Technologies, L.P. Method for enhanced oxygen delignification of chemical wood pulps

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434284B (sv) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
SE441192B (sv) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE785964A (fr) * 1971-07-07 1973-01-08 Monsanto Co Derives condenses de polyalkylenepolyamines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102229619A (zh) * 2011-04-26 2011-11-02 河南清水源科技股份有限公司 四乙烯五胺七亚甲基膦酸及其生产工艺
US11193237B2 (en) 2017-09-11 2021-12-07 Solenis Technologies, L.P. Method for enhanced oxygen delignification of chemical wood pulps

Also Published As

Publication number Publication date
NO791728L (no) 1979-11-27
NO153309B (no) 1985-11-11
FI71177C (fi) 1986-11-24
FR2426767B1 (sv) 1985-03-22
FI71177B (fi) 1986-08-14
SE7904430L (sv) 1979-11-27
NO153309C (no) 1986-02-19
FI791681A (fi) 1979-11-27
AU4723379A (en) 1979-11-29
ZA792563B (en) 1980-10-29
FR2426767A1 (fr) 1979-12-21
AU528265B2 (en) 1983-04-21

Similar Documents

Publication Publication Date Title
US3663357A (en) Bleaching of mechanical cellulosic pulp with ozone in the presence of a peroxygen compound
US5002635A (en) Method for producing pulp using pre-treatment with stabilizers and refining
US4390395A (en) Process for the regeneration of waste paper
JPH026681A (ja) 再生ファイバーより紙あるいはボール紙を製造する方法
KR20080083114A (ko) 새로운 펄프 및 펄프화 공정
SE462288B (sv) Behandling av kemiska massor i ett syrasteg foere en peroxidbehandling
CA1120210A (en) Bleaching of pulp
US4786364A (en) DMDAAC/AM copolymers as deinkers
CA2057231A1 (en) Method of pretreating lignocellulosic materials prior to alkaline peroxide high yield pulping
CA2512141C (en) Bleaching of cellulosic fibre material with peroxide using polymers as a stabiliser
KR20200074477A (ko) 면펄프 제조방법 및 그 방법으로 제조된 면펄프
EP0239583B1 (en) Method of pretreating pulp with stabilizers and peroxide prior to mechanical refining
CA1133660A (en) Process for the preparation of cellulose fibres from pine
US3650887A (en) Wood pulp bleaching process utilizing peroxide-silicate bleaching solution
JP2003504534A (ja) プロセス液における有害物質を除去するための方法
JPS583074B2 (ja) パルプノ カサンカブツヒヨウハクホウ
NO179842B (no) Fremgangsmåte for papirtilvirkning ved avvanning av masse
US7674851B2 (en) Polymer composition for peroxide bleaching of cellulosic fibre material and processes for peroxide bleaching
CA1062858A (en) Oxygen bleaching of pulp in presence of high-silica protector
SU717196A1 (ru) Способ отбелки целлюлозы дл изготовлени бумаги и картона
US5127993A (en) Method of enhancing green liquor semi-chemical pulp production
RU2019613C1 (ru) Способ отбелки лиственной сульфатной целлюлозы
JP3265036B2 (ja) アルカリパルプの漂白方法
JPS6247999B2 (sv)
SU996596A1 (ru) Волокниста масса дл изготовлени бумаги,предназначенной дл упаковки пищевых продуктов на автоматах

Legal Events

Date Code Title Description
MKEX Expiry