SK70293A3 - Method of bleaching of chemical paper stock - Google Patents

Method of bleaching of chemical paper stock Download PDF

Info

Publication number: SK70293A3
Authority: SK; Slovakia
Prior art keywords: pulp; stage; content; dry matter; hydrogen peroxide
Prior art date: 1992-07-06

Application number

SK702-93A

Other languages

English (en)

Slovak (sk)

Inventor

Francois Desprez

Johan Devenyns

Nicholas Troughton

Paul Essemaeker

Original Assignee

Solvay Interox

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.)

1992-07-06

Filing date

1993-07-02

Publication date

1994-04-06

1993-07-02 Application filed by Solvay Interox filed Critical Solvay Interox

1994-04-06 Publication of SK70293A3 publication Critical patent/SK70293A3/sk

Links

238000000034 method Methods 0.000 title claims abstract description 35
238000004061 bleaching Methods 0.000 title claims abstract description 27
239000000126 substance Substances 0.000 title abstract description 6
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 88
239000011572 manganese Substances 0.000 claims abstract description 17
229920001131 Pulp (paper) Polymers 0.000 claims abstract description 12
239000003381 stabilizer Substances 0.000 claims abstract description 12
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 10
229910052748 manganese Inorganic materials 0.000 claims abstract description 10
239000002253 acid Substances 0.000 claims description 40
150000003839 salts Chemical class 0.000 claims description 27
239000008139 complexing agent Substances 0.000 claims description 16
230000002378 acidificating effect Effects 0.000 claims description 15
238000005406 washing Methods 0.000 claims description 9
239000007864 aqueous solution Substances 0.000 claims description 8
229910021645 metal ion Inorganic materials 0.000 claims description 8
150000003009 phosphonic acids Chemical class 0.000 claims description 8
239000004115 Sodium Silicate Substances 0.000 claims description 6
NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
229910052911 sodium silicate Inorganic materials 0.000 claims description 6
239000002655 kraft paper Substances 0.000 claims description 5
229910052751 metal Inorganic materials 0.000 claims description 5
239000002184 metal Substances 0.000 claims description 5
229910052774 Proactinium Inorganic materials 0.000 claims description 3
150000007513 acids Chemical class 0.000 claims description 3
229910052698 phosphorus Inorganic materials 0.000 claims description 3
239000003352 sequestering agent Substances 0.000 claims 1
239000007787 solid Substances 0.000 abstract 2
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 93
235000002639 sodium chloride Nutrition 0.000 description 28
239000000460 chlorine Substances 0.000 description 24
OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 22
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 21
229910052801 chlorine Inorganic materials 0.000 description 19
KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 14
238000006116 polymerization reaction Methods 0.000 description 14
229910052760 oxygen Inorganic materials 0.000 description 13
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 12
238000010411 cooking Methods 0.000 description 12
239000001301 oxygen Substances 0.000 description 12
239000004155 Chlorine dioxide Substances 0.000 description 11
235000019398 chlorine dioxide Nutrition 0.000 description 11
RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 10
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical class O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
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 description 9
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 9
-1 alkaline earth metal salts Chemical class 0.000 description 9
230000000536 complexating effect Effects 0.000 description 9
239000000203 mixture Substances 0.000 description 9
BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 8
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 8
229910052783 alkali metal Inorganic materials 0.000 description 8
239000003153 chemical reaction reagent Substances 0.000 description 8
239000003795 chemical substances by application Substances 0.000 description 8
150000001875 compounds Chemical class 0.000 description 7
238000000605 extraction Methods 0.000 description 7
229920005646 polycarboxylate Polymers 0.000 description 7
150000001340 alkali metals Chemical class 0.000 description 6
229910052784 alkaline earth metal Inorganic materials 0.000 description 6
229910021653 sulphate ion Inorganic materials 0.000 description 6
RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 5
239000000174 gluconic acid Substances 0.000 description 5
235000012208 gluconic acid Nutrition 0.000 description 5
238000000227 grinding Methods 0.000 description 5
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
229920000388 Polyphosphate Polymers 0.000 description 4
238000006243 chemical reaction Methods 0.000 description 4
235000015165 citric acid Nutrition 0.000 description 4
235000011180 diphosphates Nutrition 0.000 description 4
NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 description 4
229910052816 inorganic phosphate Inorganic materials 0.000 description 4
159000000003 magnesium salts Chemical class 0.000 description 4
125000005341 metaphosphate group Chemical group 0.000 description 4
FHHJDRFHHWUPDG-UHFFFAOYSA-N peroxysulfuric acid Chemical compound OOS(O)(=O)=O FHHJDRFHHWUPDG-UHFFFAOYSA-N 0.000 description 4
239000001205 polyphosphate Substances 0.000 description 4
235000011176 polyphosphates Nutrition 0.000 description 4
239000011734 sodium Substances 0.000 description 4
239000002023 wood Substances 0.000 description 4
QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical class O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
238000010306 acid treatment Methods 0.000 description 3
229910052910 alkali metal silicate Inorganic materials 0.000 description 3
229910001902 chlorine oxide Inorganic materials 0.000 description 3
229910001882 dioxygen Inorganic materials 0.000 description 3
DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 3
229920005610 lignin Polymers 0.000 description 3
239000000243 solution Substances 0.000 description 3
LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 description 2
FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 2
FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
YUHVVTLNLCJEOB-UHFFFAOYSA-N [Cl].O=Cl=O Chemical compound [Cl].O=Cl=O YUHVVTLNLCJEOB-UHFFFAOYSA-N 0.000 description 2
150000001342 alkaline earth metals Chemical class 0.000 description 2
150000008064 anhydrides Chemical class 0.000 description 2
229920002678 cellulose Polymers 0.000 description 2
239000001913 cellulose Substances 0.000 description 2
239000007789 gas Substances 0.000 description 2
150000004966 inorganic peroxy acids Chemical class 0.000 description 2
229910052909 inorganic silicate Inorganic materials 0.000 description 2
229910052742 iron Inorganic materials 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 2
150000007522 mineralic acids Chemical class 0.000 description 2
230000007935 neutral effect Effects 0.000 description 2
150000007524 organic acids Chemical class 0.000 description 2
235000005985 organic acids Nutrition 0.000 description 2
229960003330 pentetic acid Drugs 0.000 description 2
150000004965 peroxy acids Chemical class 0.000 description 2
235000021317 phosphate Nutrition 0.000 description 2
150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
CZPZWMPYEINMCF-UHFFFAOYSA-N propaneperoxoic acid Chemical compound CCC(=O)OO CZPZWMPYEINMCF-UHFFFAOYSA-N 0.000 description 2
238000004076 pulp bleaching Methods 0.000 description 2
150000004760 silicates Chemical class 0.000 description 2
235000002906 tartaric acid Nutrition 0.000 description 2
239000011975 tartaric acid Substances 0.000 description 2
CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 2
ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 2
RNMCCPMYXUKHAZ-UHFFFAOYSA-N 2-[3,3-diamino-1,2,2-tris(carboxymethyl)cyclohexyl]acetic acid Chemical compound NC1(N)CCCC(CC(O)=O)(CC(O)=O)C1(CC(O)=O)CC(O)=O RNMCCPMYXUKHAZ-UHFFFAOYSA-N 0.000 description 1
ONPGOSVDVDPBCY-CQSZACIVSA-N 6-amino-5-[(1r)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]-n-[4-(4-methylpiperazine-1-carbonyl)phenyl]pyridazine-3-carboxamide Chemical compound O([C@H](C)C=1C(=C(F)C=CC=1Cl)Cl)C(C(=NN=1)N)=CC=1C(=O)NC(C=C1)=CC=C1C(=O)N1CCN(C)CC1 ONPGOSVDVDPBCY-CQSZACIVSA-N 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
241000726768 Carpinus Species 0.000 description 1
241000218631 Coniferophyta Species 0.000 description 1
RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
244000166124 Eucalyptus globulus Species 0.000 description 1
240000000731 Fagus sylvatica Species 0.000 description 1
235000010099 Fagus sylvatica Nutrition 0.000 description 1
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
235000011613 Pinus brutia Nutrition 0.000 description 1
241000018646 Pinus brutia Species 0.000 description 1
244000305267 Quercus macrolepis Species 0.000 description 1
WBLXMRIMSGHSAC-UHFFFAOYSA-N [Cl].[Cl] Chemical compound [Cl].[Cl] WBLXMRIMSGHSAC-UHFFFAOYSA-N 0.000 description 1
150000003863 ammonium salts Chemical class 0.000 description 1
125000004429 atom Chemical group 0.000 description 1
239000007844 bleaching agent Substances 0.000 description 1
LBAYFEDWGHXMSM-UHFFFAOYSA-N butaneperoxoic acid Chemical compound CCCC(=O)OO LBAYFEDWGHXMSM-UHFFFAOYSA-N 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
150000001735 carboxylic acids Chemical class 0.000 description 1
239000013043 chemical agent Substances 0.000 description 1
235000017168 chlorine Nutrition 0.000 description 1
125000001309 chloro group Chemical group Cl* 0.000 description 1
230000000593 degrading effect Effects 0.000 description 1
229940071106 ethylenediaminetetraacetate Drugs 0.000 description 1
235000013305 food Nutrition 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
150000002432 hydroperoxides Chemical class 0.000 description 1
WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Inorganic materials Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 1
229910052943 magnesium sulfate Inorganic materials 0.000 description 1
235000019341 magnesium sulphate Nutrition 0.000 description 1
230000014759 maintenance of location Effects 0.000 description 1
229910001437 manganese ion Inorganic materials 0.000 description 1
239000000463 material Substances 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
238000003801 milling Methods 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
150000004967 organic peroxy acids Chemical class 0.000 description 1
239000007800 oxidant agent Substances 0.000 description 1
238000004806 packaging method and process Methods 0.000 description 1
150000002978 peroxides Chemical class 0.000 description 1
125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
239000002994 raw material Substances 0.000 description 1
239000000376 reactant Substances 0.000 description 1
239000011541 reaction mixture Substances 0.000 description 1
159000000000 sodium salts Chemical class 0.000 description 1
GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
230000003381 solubilizing effect Effects 0.000 description 1
239000002904 solvent Substances 0.000 description 1
WQDSRJBTLILEEK-UHFFFAOYSA-N sulfurous acid Chemical compound OS(O)=O.OS(O)=O WQDSRJBTLILEEK-UHFFFAOYSA-N 0.000 description 1
KMIOJWCYOHBUJS-HAKPAVFJSA-N vorolanib Chemical compound C1N(C(=O)N(C)C)CC[C@@H]1NC(=O)C1=C(C)NC(\C=C/2C3=CC(F)=CC=C3NC\2=O)=C1C KMIOJWCYOHBUJS-HAKPAVFJSA-N 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
- 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)

SK702-93A 1992-07-06 1993-07-02 Method of bleaching of chemical paper stock SK70293A3 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
BE9200626A BE1006056A3 (fr)	1992-07-06	1992-07-06	Procede pour le blanchiment d'une pate a papier chimique.

Publications (1)

Publication Number	Publication Date
SK70293A3 true SK70293A3 (en)	1994-04-06

Family

ID=3886354

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SK702-93A SK70293A3 (en)	1992-07-06	1993-07-02	Method of bleaching of chemical paper stock

Country Status (15)

Country	Link
US (1)	US6221209B1 (fr)
EP (1)	EP0578304B1 (fr)
JP (1)	JPH06166981A (fr)
AR (1)	AR247258A1 (fr)
AT (1)	ATE143074T1 (fr)
AU (1)	AU654623B2 (fr)
BE (1)	BE1006056A3 (fr)
BR (1)	BR9302764A (fr)
CA (1)	CA2099827A1 (fr)
DE (1)	DE69304822T2 (fr)
ES (1)	ES2094465T3 (fr)
FI (1)	FI111170B (fr)
NZ (1)	NZ248029A (fr)
SI (1)	SI9300362A (fr)
SK (1)	SK70293A3 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE9301960L (sv) *	1993-06-08	1994-07-25	Kvaerner Pulping Tech	Blekning av kemisk massa med peroxid vid övertryck
US6605181B1 (en)	1993-10-01	2003-08-12	Kvaerner Pulping Aktiebolag	Peroxide bleach sequence including an acidic bleach stage and including a wash stage
BE1007757A3 (fr) *	1993-11-10	1995-10-17	Solvay Interox	Procede pour le blanchiment d'une pate a papier chimique.
FR2719853B1 (fr) *	1994-05-11	1996-06-21	Atochem Elf Sa	Procédé de délignification et de blanchiment d'une pâte à papier chimique.
FR2719854B1 (fr) *	1994-05-11	1996-06-21	Atochem Elf Sa	Procédé de préparation de pâtes à papier chimiques délignifiées et blanchies.
BR9508387A (pt) *	1994-07-11	1997-11-25	Beloit Technologies Inc	Vasos de alta eficiéncia pra alvejamento de materiais fibrosos lignocelulósicos celulósicos e poliméricos sintéticos
ZA955290B (en) *	1994-07-11	1996-12-27	Ingersoll Rand Co	Peroxide bleaching process for cellulosic and lignocellulosic material
US7001484B2 (en)	2000-05-04	2006-02-21	University Of New Brunswick	Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent
US7351764B2 (en) *	2004-03-31	2008-04-01	Nalco Company	Methods to enhance brightness of pulp and optimize use of bleaching chemicals
FR2912407B1 (fr) *	2007-02-14	2010-10-08	Arkema France	Procede de fonctionnalisation des carbohydrates.
US20100101743A1 (en) *	2007-02-21	2010-04-29	Solvay (Societe Anonyme)	Process for the bleaching of paper pulp
CN101903591A (zh) *	2007-12-20	2010-12-01	三菱瓦斯化学株式会社	漂白纸浆的制造方法
EP2090646A1 (fr)	2008-01-22	2009-08-19	Thermphos Trading GmbH	Composition de traitement de surface contenant des composés d'acide phosphonique
EP2082991A1 (fr)	2008-01-22	2009-07-29	Thermphos Trading GmbH	Procédé de traitement de l'eau
SE532370C2 (sv) *	2008-02-28	2009-12-29	Metso Paper Inc	Metod för blekning av en massa
EP2128331A1 (fr) *	2008-05-26	2009-12-02	SOLVAY (Société Anonyme)	Processus de blanchiment de pâte à papier
US8034759B2 (en) *	2008-10-31	2011-10-11	Ecolab Usa Inc.	Enhanced stability peracid compositions
US8845860B2 (en)	2010-09-16	2014-09-30	Georgia-Pacific Consumer Products Lp	High brightness pulps from lignin rich waste papers
CA2860609C (fr)	2012-01-12	2021-02-16	Gp Cellulose Gmbh	Fibre kraft a faible viscosite ayant des proprietes de jaunissement reduites et ses procedes de fabrication et d'utilisation
MX364847B (es)	2012-04-18	2019-05-08	Gp Cellulose Gmbh	El uso de surfactante para tratar pulpa y mejorar la incorporacion de pulpa kraft en fibra para la produccion de viscosa y otros productos de fibra secundarios.
EP4027817A1 (fr) *	2019-09-11	2022-07-20	Nicoventures Trading Limited	Procédés alternatifs de blanchiment du tabac
US12063953B2 (en)	2019-09-11	2024-08-20	Nicoventures Trading Limited	Method for whitening tobacco
US11937626B2 (en)	2020-09-04	2024-03-26	Nicoventures Trading Limited	Method for whitening tobacco

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NO144711C (no) *	1978-04-04	1981-10-21	Myrens Verksted As	Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
GB8620222D0 (en) *	1986-08-20	1986-10-01	Abitibi Price Inc	Peroxide bleaching
CA2005369A1 (fr) *	1988-12-20	1990-06-20	Madhusudan D. Jayawant	Procede pour ameliorer la delignification alcaline par oxydation, de la pate cellulosique
US4946556A (en) *	1989-04-25	1990-08-07	Kamyr, Inc.	Method of oxygen delignifying wood pulp with between stage washing
ATE97179T1 (de) *	1989-06-06	1993-11-15	Eka Nobel Ab	Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
US5091054A (en) *	1989-08-18	1992-02-25	Degussa Corporation	Process for bleaching and delignification of lignocellulosic
US5246543A (en) *	1989-08-18	1993-09-21	Degussa Corporation	Process for bleaching and delignification of lignocellulosic materials
AT395028B (de) *	1990-02-07	1992-08-25	Chemiefaser Lenzing Ag	Verfahren zum chlorfreien bleichen von kunstfaserzellstoff
EP0565625A1 (fr) *	1991-01-03	1993-10-20	Union Camp Patent Holding, Inc.	Procede de blanchiment de pate lignocellulosique sans utilisation de chlore
SE469842C (sv) *	1992-01-21	1996-01-15	Sunds Defibrator Ind Ab	Blekning av kemisk massa med peroxid

1992
- 1992-07-06 BE BE9200626A patent/BE1006056A3/fr not_active IP Right Cessation
1993
- 1993-06-29 EP EP93201886A patent/EP0578304B1/fr not_active Expired - Lifetime
- 1993-06-29 DE DE69304822T patent/DE69304822T2/de not_active Expired - Fee Related
- 1993-06-29 ES ES93201886T patent/ES2094465T3/es not_active Expired - Lifetime
- 1993-06-29 US US08/083,183 patent/US6221209B1/en not_active Expired - Fee Related
- 1993-06-29 AT AT93201886T patent/ATE143074T1/de not_active IP Right Cessation
- 1993-06-30 NZ NZ248029A patent/NZ248029A/en unknown
- 1993-07-02 SK SK702-93A patent/SK70293A3/sk unknown
- 1993-07-02 AU AU41705/93A patent/AU654623B2/en not_active Ceased
- 1993-07-05 CA CA002099827A patent/CA2099827A1/fr not_active Abandoned
- 1993-07-05 BR BR9302764A patent/BR9302764A/pt not_active Application Discontinuation
- 1993-07-05 AR AR93325341A patent/AR247258A1/es active
- 1993-07-06 FI FI933103A patent/FI111170B/fi active
- 1993-07-06 JP JP5167132A patent/JPH06166981A/ja active Pending
- 1993-07-06 SI SI9300362A patent/SI9300362A/sl unknown

Also Published As

Publication number	Publication date
US6221209B1 (en)	2001-04-24
EP0578304A1 (fr)	1994-01-12
NZ248029A (en)	1995-10-26
BE1006056A3 (fr)	1994-05-03
FI933103L (fi)	1994-01-07
ES2094465T3 (es)	1997-01-16
BR9302764A (pt)	1994-02-08
CA2099827A1 (fr)	1994-01-07
DE69304822D1 (de)	1996-10-24
AU4170593A (en)	1994-01-13
EP0578304B1 (fr)	1996-09-18
FI111170B (fi)	2003-06-13
ATE143074T1 (de)	1996-10-15
AR247258A1 (es)	1994-11-30
SI9300362A (en)	1994-03-31
FI933103A0 (fi)	1993-07-06
JPH06166981A (ja)	1994-06-14
DE69304822T2 (de)	1997-04-10
AU654623B2 (en)	1994-11-10

Publication	Publication Date	Title
SK70293A3 (en)	1994-04-06	Method of bleaching of chemical paper stock
US5552018A (en)	1996-09-03	A process for delignifying pulp with organic peroxyacid in the presence of phosphonic acids and their salts
CA2017807C (fr)	1995-12-19	Procede de blanchiment de pates lignocellulosique
CA2149648C (fr)	2000-09-19	Procede de delignification de pate contenant de la lignocellulose
JP4499280B2 (ja)	2010-07-07	過酸による化学パルプの漂白
US5645686A (en)	1997-07-08	Process for bleaching a pulp in a sequence including an enzyme stage
US6007678A (en)	1999-12-28	Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof
AU666375B2 (en)	1996-02-08	Process for the delignification of a chemical paper pulp
US5698075A (en)	1997-12-16	Process for bleaching a chemical paper pulp in an oxygen-peroxymonosulfuric acid-hydrogen peroxide sequence
CA2149649C (fr)	2000-09-19	Procede de blanchiment de pate contenant de la lignocellulose
JPH08507332A (ja)	1996-08-06	製紙用化学パルプの脱リグニン方法
JPH05195467A (ja)	1993-08-03	ケミカルペーパーパルプの脱リグニン化の選択性を改良するための方法
AU711672B2 (en)	1999-10-21	Process for oxygen delignification of a paper pulp
RU2097462C1 (ru)	1997-11-27	Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы
JPH10500178A (ja)	1998-01-06	ケミカルペーパーパルプの漂白方法
NZ274852A (en)	1997-04-24	Pulp bleaching process comprising steps qpa in that order (ie decontamination, alkaline hydrogen peroxide bleaching, non peroxygenated acid)
JPH0748792A (ja)	1995-02-21	ペーパーパルプの漂白方法
CZ297592A3 (en)	1993-07-14	Method of improving lignin splitting selectivity of a paper pulp