SE9900178L - Avlägsnande av övergångsmetalljoner från trämassefibrer - Google Patents

Avlägsnande av övergångsmetalljoner från trämassefibrer

Info

Publication number: SE9900178L
Authority: SE; Sweden
Prior art keywords: pulp; metal ions; removal; manganese; dtpa
Prior art date: 1998-02-19

Application number

SE9900178A

Other languages

English (en)

Other versions

SE9900178D0 (sv

Inventor

Y Ni

Z Li

A R P Van Heiningen

Original Assignee

Ahlstrom Machinery Inc

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.)

1998-02-19

Filing date

1999-01-21

Publication date

1999-08-20

1999-01-21 Application filed by Ahlstrom Machinery Inc filed Critical Ahlstrom Machinery Inc

1999-01-21 Publication of SE9900178D0 publication Critical patent/SE9900178D0/sv

1999-08-20 Publication of SE9900178L publication Critical patent/SE9900178L/sv

Links

229920001131 Pulp (paper) Polymers 0.000 title abstract 3
239000000835 fiber Substances 0.000 title abstract 3
229910001428 transition metal ion Inorganic materials 0.000 title abstract 2
CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 4
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 abstract 3
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 2
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 2
238000004061 bleaching Methods 0.000 abstract 2
230000009920 chelation Effects 0.000 abstract 2
229910052749 magnesium Inorganic materials 0.000 abstract 2
239000011777 magnesium Substances 0.000 abstract 2
229910052943 magnesium sulfate Inorganic materials 0.000 abstract 2
235000019341 magnesium sulphate Nutrition 0.000 abstract 2
229910052748 manganese Inorganic materials 0.000 abstract 2
239000011572 manganese Substances 0.000 abstract 2
229920002522 Wood fibre Polymers 0.000 abstract 1
239000002253 acid Substances 0.000 abstract 1
230000009286 beneficial effect Effects 0.000 abstract 1
229920002678 cellulose Polymers 0.000 abstract 1
239000001913 cellulose Substances 0.000 abstract 1
239000013522 chelant Substances 0.000 abstract 1
238000005342 ion exchange Methods 0.000 abstract 1
230000014759 maintenance of location Effects 0.000 abstract 1
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
229910021645 metal ion Inorganic materials 0.000 abstract 1
238000000034 method Methods 0.000 abstract 1
150000002978 peroxides Chemical class 0.000 abstract 1
239000002002 slurry Substances 0.000 abstract 1
239000000126 substance Substances 0.000 abstract 1
239000002025 wood fiber Substances 0.000 abstract 1

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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating 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
- D21C9/1026—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)

SE9900178A 1998-02-19 1999-01-21 Avlägsnande av övergångsmetalljoner från trämassefibrer SE9900178L (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US2586598A	1998-02-19	1998-02-19

Publications (2)

Publication Number	Publication Date
SE9900178D0 SE9900178D0 (sv)	1999-01-21
SE9900178L true SE9900178L (sv)	1999-08-20

Family

ID=21828470

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9900178A SE9900178L (sv)	1998-02-19	1999-01-21	Avlägsnande av övergångsmetalljoner från trämassefibrer

Country Status (4)

Country	Link
JP (1)	JPH11279966A (sv)
CA (1)	CA2258387A1 (sv)
FI (1)	FI990278A (sv)
SE (1)	SE9900178L (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP4973284B2 (ja) *	2007-03-30	2012-07-11	栗田工業株式会社	パルプ洗浄剤、パルプ製造方法、及びパルプ洗浄方法

1999
- 1999-01-06 CA CA002258387A patent/CA2258387A1/en not_active Withdrawn
- 1999-01-21 SE SE9900178A patent/SE9900178L/sv not_active Application Discontinuation
- 1999-02-12 FI FI990278A patent/FI990278A/sv unknown
- 1999-02-15 JP JP11035146A patent/JPH11279966A/ja not_active Withdrawn

Also Published As

Publication number	Publication date
FI990278A0 (sv)	1999-02-12
CA2258387A1 (en)	1999-08-19
FI990278A (sv)	1999-08-20
JPH11279966A (ja)	1999-10-12
SE9900178D0 (sv)	1999-01-21

Publication	Publication Date	Title
CA2121387A1 (en)	1994-10-21	Method for Bleaching Lignocellulose-Containing Pulp
AU2964497A (en)	1998-01-05	Process for the bleaching of chemical pulp
ID19415A (id)	1998-07-09	Proses pemutihan bubur kayu
SE9700992L (sv)	1997-05-16	Förfarande för blekning av kraftmassa
AU7266891A (en)	1991-09-12	Process for the preparation of bleached high-yield pulps
SE9900178L (sv)	1999-08-20	Avlägsnande av övergångsmetalljoner från trämassefibrer
SE0301773D0 (sv)	2003-06-19	Alkaline extraction stages comprising xylanase
EP0778909B1 (en)	2002-10-23	Pulp bleaching
US20060081346A1 (en)	2006-04-20	Peroxide bleaching of wood pulp
EP0846199B1 (en)	2001-01-24	Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing
JPH06207390A (ja)	1994-07-26	パルプの漂白方法
RU96114250A (ru)	1998-08-20	Способ получения древесной массы
RU96124423A (ru)	1998-09-20	Способ отбелки целлюлозы
TH29376A (th)	1998-07-30	กรรมวิธีการฟอกเยื่อกระดาษ
WO2001083881A2 (en)	2001-11-08	Peroxide bleaching of wood pulp
SE9704273L (sv)	1999-05-22	Nytt förfarande vid framställning av kemisk massa

Legal Events

Date	Code	Title	Description
2003-12-09	NAV	Patent application has lapsed