CA2154076A1 - Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent - Google Patents

Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent

Info

Publication number: CA2154076A1
Authority: CA; Canada
Prior art keywords: pulp; peroxide; acid; bleaching; acetic acid
Prior art date: 1993-01-29
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.): Abandoned

Application number

CA 2154076

Other languages

English (en)

French (fr)

Inventor

Erik Nilsson

Petter Tibbling

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.)

Metso Fiber Karlstad AB

Original Assignee

Individual

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

1994-01-26

Publication date

1994-08-04

1994-01-26 Application filed by Individual filed Critical Individual

1994-08-04 Publication of CA2154076A1 publication Critical patent/CA2154076A1/en

Status Abandoned 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
- D21C9/16—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)

CA 2154076 1993-01-29 1994-01-26 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent Abandoned CA2154076A1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE9300277A SE501325E (sv)	1993-01-29	1993-01-29	Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
SE9300277-2		1993-01-29

Publications (1)

Publication Number	Publication Date
CA2154076A1 true CA2154076A1 (en)	1994-08-04

Family

ID=20388704

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA 2154076 Abandoned CA2154076A1 (en)	1993-01-29	1994-01-26	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent

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
DE402335T1 (de) *	1989-06-06	1992-04-09	Eka Nobel Ab, Surte	Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
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 CA CA 2154076 patent/CA2154076A1/en not_active Abandoned
- 1994-01-26 WO PCT/SE1994/000054 patent/WO1994017239A1/en active IP Right Grant
- 1994-01-26 JP JP6516930A patent/JPH08505907A/ja active Pending
- 1994-01-26 BR BR9406193A patent/BR9406193A/pt not_active IP Right Cessation
- 1994-01-26 EP EP94905899A patent/EP0681624A1/en not_active Ceased
- 1994-01-26 CN CN 94191058 patent/CN1117301A/zh active Pending
- 1994-01-26 AU AU59820/94A patent/AU675291B2/en not_active Expired - Fee Related
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
CN1117301A (zh)	1996-02-21
WO1994017239A1 (en)	1994-08-04
SE501325E (sv)	1999-09-20
FI111387B (sv)	2003-07-15
NO952935L (no)	1995-09-13
JPH08505907A (ja)	1996-06-25
SE501325C2 (sv)	1995-01-16
SE9300277D0 (sv)	1993-01-29
FI953589A0 (sv)	1995-07-27
NO952935D0 (no)	1995-07-24
AU675291B2 (en)	1997-01-30
BR9406193A (pt)	1996-01-09
NO305763B1 (no)	1999-07-19
FI953589A (sv)	1995-07-27
AU5982094A (en)	1994-08-15
EP0681624A1 (en)	1995-11-15
SE9300277L (sv)	1994-07-30

Similar Documents

Publication	Publication Date	Title
CA2017807C (en)	1995-12-19	Process for bleaching lignocellulose-containing pulps
CA1119360A (en)	1982-03-09	Method for bleaching oxygen delignified cellulose-containing pulp with ozone
EP1040222B1 (en)	2008-02-06	Bleaching of chemical pulp with peracid
EP0511695B2 (en)	2004-06-02	Process for bleaching of lignocellulose-containing pulp
CA2149648C (en)	2000-09-19	Process for delignification of lignocellulose-containing pulp
CA2067295C (en)	1996-07-23	Process for bleaching of lignocellulose-containing material
US6398908B1 (en)	2002-06-04	Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
US5876561A (en)	1999-03-02	Post digestion treatment of cellulosic pulp to minimize formation of dioxin
CA2670697C (en)	2016-03-15	Method for bleaching chemical paper pulps by final ozone treatment at high temperature
AU675291B2 (en)	1997-01-30	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
US5645687A (en)	1997-07-08	Process for manufacturing bleached pulp with reduced chloride production
CA2149649C (en)	2000-09-19	Process for bleaching of lignocellulose-containing pulp
CA2163116C (en)	2003-12-30	Method of bleaching pulp without using chlorine chemicals
WO1991012366A1 (en)	1991-08-22	Bleaching of paper pulp
EP0496827A1 (en)	1992-08-05	Chlorine dioxide pulp bleaching process using sequential chlorine addition
CA2405325A1 (en)	2001-10-11	A method for controlling the delignification and bleaching of a pulp suspension
Vicuña et al.	1995	Bleaching of radiata pine kraft pulp with the EnZone process
WO2000008251A1 (en)	2000-02-17	An improved method for bleaching pulp
EP3478892B1 (en)	2022-10-12	A process for treating pulp
WO1996005364A1 (en)	1996-02-22	Bleaching of chemical paper pulp under sulphonating conditions
CA1110018A (en)	1981-10-06	Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
US5354423A (en)	1994-10-11	Ozone dioxane bleaching of chemical pulps
NZ250050A (en)	1994-12-22	Bleaching pulp; magnesium compound pretreatment in acid conditions
CA2139246A1 (en)	1992-10-31	Process for bleaching of lignocellulose-containing pulp

Legal Events

Date	Code	Title	Description
1996-10-22	EEER	Examination request
1999-01-26	FZDE	Dead