SE501325E - Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents - Google Patents

Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents

Info

Publication number: SE501325E
Authority: SE; Sweden
Prior art keywords: pulp; acidified; chlorine; treatment; acetic acid
Prior art date: 1993-01-29

Application number

SE9300277A

Other languages

Swedish (sv)

Other versions

SE9300277L (en

SE501325C2 (en

SE9300277D0 (en

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

1993-01-29

Publication date

1999-09-20

1993-01-29 Application filed by Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech

1993-01-29 Priority to SE9300277A priority Critical patent/SE501325E/en

1993-01-29 Publication of SE9300277D0 publication Critical patent/SE9300277D0/en

1994-01-26 Priority to CN94191058.XA priority patent/CN1117301A/en

1994-01-26 Priority to JP6516930A priority patent/JPH08505907A/en

1994-01-26 Priority to AU59820/94A priority patent/AU675291B2/en

1994-01-26 Priority to PCT/SE1994/000054 priority patent/WO1994017239A1/en

1994-01-26 Priority to EP94905899A priority patent/EP0681624A1/en

1994-01-26 Priority to CA002154076A priority patent/CA2154076A1/en

1994-01-26 Priority to BR9406193A priority patent/BR9406193A/en

1994-07-30 Publication of SE9300277L publication Critical patent/SE9300277L/en

1995-01-16 Publication of SE501325C2 publication Critical patent/SE501325C2/en

1995-07-24 Priority to NO952935A priority patent/NO305763B1/en

1995-07-27 Priority to FI953589A priority patent/FI111387B/en

1999-09-20 Publication of SE501325E publication Critical patent/SE501325E/en

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)

SE9300277A 1993-01-29 1993-01-29 Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents SE501325E (en)

Priority Applications (10)

Application Number	Priority Date	Filing Date	Title
SE9300277A SE501325E (en)	1993-01-29	1993-01-29	Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents
BR9406193A BR9406193A (en)	1993-01-29	1994-01-26	Process for bleaching pulp of cellulosic fiber material without the use of chlorine
PCT/SE1994/000054 WO1994017239A1 (en)	1993-01-29	1994-01-26	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
JP6516930A JPH08505907A (en)	1993-01-29	1994-01-26	Chlorine-free bleaching method for pulp using acetic acid as acidifying agent
AU59820/94A AU675291B2 (en)	1993-01-29	1994-01-26	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
CN94191058.XA CN1117301A (en)	1993-01-29	1994-01-26	Chlorine-free pulp bleaching method using acetic acid as acidifying agent
EP94905899A EP0681624A1 (en)	1993-01-29	1994-01-26	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
CA002154076A CA2154076A1 (en)	1993-01-29	1994-01-26	Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
NO952935A NO305763B1 (en)	1993-01-29	1995-07-24	Process of chlorine-free bleaching of pulp using acetic acid as an acidifying agent
FI953589A FI111387B (en)	1993-01-29	1995-07-27	Process for chlorine-free bleaching of pulp with acetic acid as an acidifying agent

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE9300277A SE501325E (en)	1993-01-29	1993-01-29	Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents

Publications (4)

Publication Number	Publication Date
SE9300277D0 SE9300277D0 (en)	1993-01-29
SE9300277L SE9300277L (en)	1994-07-30
SE501325C2 SE501325C2 (en)	1995-01-16
SE501325E true SE501325E (en)	1999-09-20

Family

ID=20388704

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9300277A SE501325E (en)	1993-01-29	1993-01-29	Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents

Country Status (10)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN1050642C (en) *	1996-06-25	2000-03-22	华南理工大学	Everyday production 30-150 ton high concentration paper pulp bleaching method by using hydrogen peroxide
CN103726382B (en) *	2013-12-31	2016-08-17	安徽泾县千年古宣宣纸有限公司	A kind of pure straw Chinese art paper and chloride-free bleaching production process thereof
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 (en) *	1972-04-21	1974-10-17	Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt	Chlorine-free multi-stage bleaching of cellulose
DE2841013C2 (en) *	1978-09-21	1984-06-07	Degussa Ag, 6000 Frankfurt	Process for full bleaching of pulp
DE69004492T3 (en) *	1989-06-06	2001-11-15	Eka Nobel Ab, Bohus	Process for bleaching pulps containing lignocellulose.
SE468355B (en) *	1991-04-30	1992-12-21	Eka Nobel Ab	CHEMISTRY OF CHEMICAL MASS THROUGH TREATMENT WITH COMPLEX PICTURES AND OZONE

1993
- 1993-01-29 SE SE9300277A patent/SE501325E/en not_active IP Right Cessation
1994
- 1994-01-26 CA CA002154076A patent/CA2154076A1/en not_active Abandoned
- 1994-01-26 EP EP94905899A patent/EP0681624A1/en not_active Ceased
- 1994-01-26 AU AU59820/94A patent/AU675291B2/en not_active Expired - Fee Related
- 1994-01-26 CN CN94191058.XA patent/CN1117301A/en active Pending
- 1994-01-26 WO PCT/SE1994/000054 patent/WO1994017239A1/en not_active Ceased
- 1994-01-26 BR BR9406193A patent/BR9406193A/en not_active IP Right Cessation
- 1994-01-26 JP JP6516930A patent/JPH08505907A/en active Pending
1995
- 1995-07-24 NO NO952935A patent/NO305763B1/en not_active IP Right Cessation
- 1995-07-27 FI FI953589A patent/FI111387B/en active

Also Published As

Publication number	Publication date
SE9300277L (en)	1994-07-30
AU5982094A (en)	1994-08-15
NO952935L (en)	1995-09-13
EP0681624A1 (en)	1995-11-15
WO1994017239A1 (en)	1994-08-04
SE501325C2 (en)	1995-01-16
NO952935D0 (en)	1995-07-24
CA2154076A1 (en)	1994-08-04
NO305763B1 (en)	1999-07-19
BR9406193A (en)	1996-01-09
FI953589L (en)	1995-07-27
AU675291B2 (en)	1997-01-30
SE9300277D0 (en)	1993-01-29
FI953589A0 (en)	1995-07-27
CN1117301A (en)	1996-02-21
FI111387B (en)	2003-07-15
JPH08505907A (en)	1996-06-25

Publication	Publication Date	Title
AU4804893A (en)	1994-03-29	Laundry waste water treatment and wash process
FI963571A0 (en)	1996-09-10	Process for the treatment of 5HT2B receptor-related conditions
DE69523350D1 (en)	2001-11-29	Treatment of hyperproliferative vascular diseases
NO943318D0 (en)	1994-09-08	Process for the production of acetic acid
FI961905A0 (en)	1996-05-03	Process for oxidation of carbohydrate
FI931657A0 (en)	1993-04-14	Process for the treatment of endo-osteal material
DE69429160D1 (en)	2002-01-03	TREATMENT OF TEXTILE PRODUCT
FI944000A0 (en)	1994-08-31	Treatment of waste water from the production of pulp and paper with a reducing agent and a polymer for decolorization
FI944318A0 (en)	1994-09-16	Process for bleaching hardwood pulp
DE69505484D1 (en)	1998-11-26	2-Substituted benzothiazole derivatives as a means of treating complications related to diabetes
FR2630725B1 (en)	1990-07-13	PROCESS FOR THE PREPARATION OF FERRIC CHLORIDE FROM FERROUS CHLORIDE
SE501325E (en)	1999-09-20	Process for chlorine-free bleaching of pulp, wherein the pulp is acidified with acetic acid in the treatment with complexing agents
NO953993D0 (en)	1995-10-06	Process water treatment process
FI934056A0 (en)	1993-09-15	Pulp bleaching process
FR2656528B1 (en)	1994-07-22	COMBINED CIMETIDINE-PIRENZEPINE FORMULA FOR THE TREATMENT OF SINGLE ESTOMAC ULCERS AND EROSIONS AND METHOD OF TREATMENT.
NO951464D0 (en)	1995-04-19	Process for the treatment of sulfite pulp for bleaching with oxygen-containing chemicals
SE9403396L (en)	1996-04-08	Bleaching of pulp
FI974115A7 (en)	1997-11-03	Pulp treatment with a chelating agent and subsequent bleaching at a pH value above 9
NO923492D0 (en)	1992-09-08	PROCEDURE FOR TREATING A SOLUTION CONTAINING ACETIC ACID IN THE PRESENT OF THE HALOGEN
FI944350A0 (en)	1994-09-20	Process for enzymatic treatment of chemical pulp before bleaching
SE9502169D0 (en)	1995-06-14	Process for purification of process water during pulping
FI960926A0 (en)	1996-02-28	Process for the treatment of solutions containing chlorides
FI950200A0 (en)	1995-01-17	Pulp bleaching process
SE9403140D0 (en)	1994-09-20	Process of bleaching cellulose pulp in sequences beginning with OQPZ
NO950752D0 (en)	1995-02-27	Process water treatment process

Legal Events

Date	Code	Title	Description
2008-09-16	NUG	Patent has lapsed