FI953589A - Förfarande för klorfri blekning av massa med ättiksyra som syramedel - Google Patents

Förfarande för klorfri blekning av massa med ättiksyra som syramedel Download PDF

Info

Publication number: FI953589A
Authority: FI; Finland
Prior art keywords: pulp; chlorine; acetic acid; acidifying agent; free bleaching
Prior art date: 1993-01-29

Application number

FI953589A

Other languages

English (en)

Finnish (fi)

Other versions

FI953589A0 (sv

FI111387B (sv

Inventor

Erik Nilsson

Petter Tibbling

Original Assignee

Kvaerner Pulping Tech

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.)

1993-01-29

Filing date

1995-07-27

Publication date

1995-07-27

1995-07-27 Application filed by Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech

1995-07-27 Publication of FI953589A publication Critical patent/FI953589A/sv

1995-07-27 Publication of FI953589A0 publication Critical patent/FI953589A0/sv

2003-07-15 Application granted granted Critical

2003-07-15 Publication of FI111387B publication Critical patent/FI111387B/sv

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
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
- 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
- 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
- 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)

FI953589A 1993-01-29 1995-07-27 Förfarande för klorfri blekning av massa med ättiksyra som surgörningsmedel FI111387B (sv)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
SE9300277		1993-01-29
SE9300277A SE501325E (sv)	1993-01-29	1993-01-29	Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
PCT/SE1994/000054 WO1994017239A1 (en)	1993-01-29	1994-01-26	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
SE9400054		1994-01-26

Publications (3)

Publication Number	Publication Date
FI953589A true FI953589A (sv)	1995-07-27
FI953589A0 FI953589A0 (sv)	1995-07-27
FI111387B FI111387B (sv)	2003-07-15

Family

ID=20388704

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI953589A FI111387B (sv)	1993-01-29	1995-07-27	Förfarande för klorfri blekning av massa med ättiksyra som surgörningsmedel

Country Status (10)

Country	Link
EP (1)	EP0681624A1 (sv)
JP (1)	JPH08505907A (sv)
CN (1)	CN1117301A (sv)
AU (1)	AU675291B2 (sv)
BR (1)	BR9406193A (sv)
CA (1)	CA2154076A1 (sv)
FI (1)	FI111387B (sv)
NO (1)	NO305763B1 (sv)
SE (1)	SE501325E (sv)
WO (1)	WO1994017239A1 (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN1050642C (zh) *	1996-06-25	2000-03-22	华南理工大学	高浓纸浆过氧化氢漂白方法
CN103726382B (zh) *	2013-12-31	2016-08-17	安徽泾县千年古宣宣纸有限公司	一种纯草型宣纸及其无氯漂白生产工艺
EP3882380B1 (en) *	2020-03-16	2022-04-27	Re:NewCell AB	One stage method for acid metal removal and bleach

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2219505C3 (de) *	1972-04-21	1974-10-17	Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt	Chlorfreie Mehrstufenbleiche von Zellstoff
DE2841013C2 (de) *	1978-09-21	1984-06-07	Degussa Ag, 6000 Frankfurt	Verfahren zur Vollbleiche von Zellstoff
ES2038097T5 (es) *	1989-06-06	2001-05-01	Eka Chemicals Ab	Procedimiento para blanquear pastas papeleras que contienen lignocelulosa.
SE468355B (sv) *	1991-04-30	1992-12-21	Eka Nobel Ab	Blekning av kemisk massa genom behandling med komplexbildare och ozon

1993
- 1993-01-29 SE SE9300277A patent/SE501325E/sv not_active IP Right Cessation
1994
- 1994-01-26 EP EP94905899A patent/EP0681624A1/en not_active Ceased
- 1994-01-26 JP JP6516930A patent/JPH08505907A/ja active Pending
- 1994-01-26 WO PCT/SE1994/000054 patent/WO1994017239A1/en active IP Right Grant
- 1994-01-26 BR BR9406193A patent/BR9406193A/pt not_active IP Right Cessation
- 1994-01-26 AU AU59820/94A patent/AU675291B2/en not_active Expired - Fee Related
- 1994-01-26 CN CN 94191058 patent/CN1117301A/zh active Pending
- 1994-01-26 CA CA 2154076 patent/CA2154076A1/en not_active Abandoned
1995
- 1995-07-24 NO NO952935A patent/NO305763B1/no not_active IP Right Cessation
- 1995-07-27 FI FI953589A patent/FI111387B/sv active

Also Published As

Publication number	Publication date
SE501325E (sv)	1999-09-20
SE501325C2 (sv)	1995-01-16
BR9406193A (pt)	1996-01-09
CA2154076A1 (en)	1994-08-04
NO952935L (no)	1995-09-13
NO952935D0 (no)	1995-07-24
AU675291B2 (en)	1997-01-30
FI953589A0 (sv)	1995-07-27
AU5982094A (en)	1994-08-15
NO305763B1 (no)	1999-07-19
EP0681624A1 (en)	1995-11-15
JPH08505907A (ja)	1996-06-25
SE9300277D0 (sv)	1993-01-29
CN1117301A (zh)	1996-02-21
WO1994017239A1 (en)	1994-08-04
FI111387B (sv)	2003-07-15
SE9300277L (sv)	1994-07-30

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