CA2063591C - Environmentally improved process for bleaching lignocellulosic materials - Google Patents

Environmentally improved process for bleaching lignocellulosic materials

Info

Publication number: CA2063591C
Authority: CA; Canada
Prior art keywords: pulp; ozone; viscosity; lignin; delignification
Prior art date: 1990-05-17
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.): Expired - Lifetime

Application number

CA002063591A

Other languages

English (en)

French (fr)

Other versions

CA2063591A1 (en

Inventor

Bruce F. Griggs

Thomas P. Gandek

Michael A. Pikulin

Allen Rosen

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.)

Union Camp Patent Holding Inc

Original Assignee

Union Camp Patent Holding 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.)

1990-05-17

Filing date

1990-05-17

Publication date

1998-02-03

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22220868&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2063591(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1990-05-17 Application filed by Union Camp Patent Holding Inc filed Critical Union Camp Patent Holding Inc

1991-11-18 Publication of CA2063591A1 publication Critical patent/CA2063591A1/en

1998-02-03 Application granted granted Critical

1998-02-03 Publication of CA2063591C publication Critical patent/CA2063591C/en

2010-05-17 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 270
230000008569 process Effects 0.000 title claims abstract description 225
238000004061 bleaching Methods 0.000 title claims abstract description 114
239000012978 lignocellulosic material Substances 0.000 title claims description 34
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 215
OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims abstract description 82
235000019398 chlorine dioxide Nutrition 0.000 claims abstract description 42
239000004155 Chlorine dioxide Substances 0.000 claims abstract description 37
239000000460 chlorine Substances 0.000 claims abstract description 35
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 33
229910052801 chlorine Inorganic materials 0.000 claims abstract description 32
150000002978 peroxides Chemical class 0.000 claims abstract description 22
239000000706 filtrate Substances 0.000 claims abstract description 10
229910052760 oxygen Inorganic materials 0.000 claims description 122
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 121
239000001301 oxygen Substances 0.000 claims description 121
238000004537 pulping Methods 0.000 claims description 79
229920005610 lignin Polymers 0.000 claims description 72
239000000463 material Substances 0.000 claims description 58
238000011282 treatment Methods 0.000 claims description 48
239000002655 kraft paper Substances 0.000 claims description 40
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
239000012670 alkaline solution Substances 0.000 claims description 32
238000005406 washing Methods 0.000 claims description 28
239000011121 hardwood Substances 0.000 claims description 24
229920002678 cellulose Polymers 0.000 claims description 23
239000000126 substance Substances 0.000 claims description 23
239000001913 cellulose Substances 0.000 claims description 22
239000002245 particle Substances 0.000 claims description 21
239000011122 softwood Substances 0.000 claims description 20
239000000203 mixture Substances 0.000 claims description 16
230000007423 decrease Effects 0.000 claims description 14
230000002596 correlated effect Effects 0.000 claims description 13
230000015556 catabolic process Effects 0.000 claims description 12
239000003795 chemical substances by application Substances 0.000 claims description 11
238000006731 degradation reaction Methods 0.000 claims description 11
230000002829 reductive effect Effects 0.000 claims description 11
238000005282 brightening Methods 0.000 claims description 10
MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
239000007788 liquid Substances 0.000 claims description 9
238000011084 recovery Methods 0.000 claims description 9
150000001805 chlorine compounds Chemical class 0.000 claims description 8
230000003247 decreasing effect Effects 0.000 claims description 8
239000002738 chelating agent Substances 0.000 claims description 7
238000002156 mixing Methods 0.000 claims description 7
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
230000002378 acidificating effect Effects 0.000 claims description 6
239000002253 acid Substances 0.000 claims description 5
229910021645 metal ion Inorganic materials 0.000 claims description 5
238000009827 uniform distribution Methods 0.000 claims description 5
238000004519 manufacturing process Methods 0.000 claims description 4
235000006408 oxalic acid Nutrition 0.000 claims description 3
238000001223 reverse osmosis Methods 0.000 claims description 2
239000007864 aqueous solution Substances 0.000 claims 3
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims 1
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical group OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims 1
239000013505 freshwater Substances 0.000 claims 1
230000035515 penetration Effects 0.000 claims 1
239000007844 bleaching agent Substances 0.000 abstract description 19
230000007613 environmental effect Effects 0.000 abstract description 6
230000006872 improvement Effects 0.000 abstract description 2
239000012467 final product Substances 0.000 abstract 1
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 60
239000000835 fiber Substances 0.000 description 32
239000002023 wood Substances 0.000 description 32
239000007789 gas Substances 0.000 description 21
238000000605 extraction Methods 0.000 description 19
238000006243 chemical reaction Methods 0.000 description 18
239000000123 paper Substances 0.000 description 18
239000003513 alkali Substances 0.000 description 17
230000008859 change Effects 0.000 description 17
235000008331 Pinus X rigitaeda Nutrition 0.000 description 14
235000011613 Pinus brutia Nutrition 0.000 description 14
241000018646 Pinus brutia Species 0.000 description 14
239000000243 solution Substances 0.000 description 14
239000000047 product Substances 0.000 description 12
150000002500 ions Chemical class 0.000 description 11
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 9
230000009467 reduction Effects 0.000 description 9
244000228957 Ferula foetida Species 0.000 description 8
230000008901 benefit Effects 0.000 description 8
238000004064 recycling Methods 0.000 description 8
239000003518 caustics Substances 0.000 description 7
238000010790 dilution Methods 0.000 description 6
239000012895 dilution Substances 0.000 description 6
238000012216 screening Methods 0.000 description 6
229920001131 Pulp (paper) Polymers 0.000 description 5
QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 5
230000000694 effects Effects 0.000 description 5
238000006385 ozonation reaction Methods 0.000 description 5
235000005018 Pinus echinata Nutrition 0.000 description 4
241001236219 Pinus echinata Species 0.000 description 4
235000017339 Pinus palustris Nutrition 0.000 description 4
235000008566 Pinus taeda Nutrition 0.000 description 4
241000218679 Pinus taeda Species 0.000 description 4
SURLGNKAQXKNSP-DBLYXWCISA-N chlorin Chemical compound C\1=C/2\N/C(=C\C3=N/C(=C\C=4NC(/C=C\5/C=CC/1=N/5)=CC=4)/C=C3)/CC\2 SURLGNKAQXKNSP-DBLYXWCISA-N 0.000 description 4
238000010411 cooking Methods 0.000 description 4
230000029087 digestion Effects 0.000 description 4
WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
150000002926 oxygen Chemical class 0.000 description 4
230000004044 response Effects 0.000 description 4
239000007787 solid Substances 0.000 description 4
NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 3
KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 3
101100345589 Mus musculus Mical1 gene Proteins 0.000 description 3
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
239000012159 carrier gas Substances 0.000 description 3
238000009826 distribution Methods 0.000 description 3
230000003287 optical effect Effects 0.000 description 3
230000001590 oxidative effect Effects 0.000 description 3
238000012545 processing Methods 0.000 description 3
239000000376 reactant Substances 0.000 description 3
239000002002 slurry Substances 0.000 description 3
229920003043 Cellulose fiber Polymers 0.000 description 2
LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
101100130497 Drosophila melanogaster Mical gene Proteins 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
241000353097 Molva molva Species 0.000 description 2
KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
230000000996 additive effect Effects 0.000 description 2
PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 2
150000004056 anthraquinones Chemical class 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 2
239000006227 byproduct Substances 0.000 description 2
150000001720 carbohydrates Chemical class 0.000 description 2
230000009920 chelation Effects 0.000 description 2
238000005660 chlorination reaction Methods 0.000 description 2
230000000052 comparative effect Effects 0.000 description 2
230000000875 corresponding effect Effects 0.000 description 2
230000007797 corrosion Effects 0.000 description 2
238000005260 corrosion Methods 0.000 description 2
230000001419 dependent effect Effects 0.000 description 2
230000006866 deterioration Effects 0.000 description 2
238000006073 displacement reaction Methods 0.000 description 2
238000004090 dissolution Methods 0.000 description 2
238000005516 engineering process Methods 0.000 description 2
238000001914 filtration Methods 0.000 description 2
238000000227 grinding Methods 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
101150085091 lat-2 gene Proteins 0.000 description 2
230000000670 limiting effect Effects 0.000 description 2
239000007791 liquid phase Substances 0.000 description 2
229910052943 magnesium sulfate Inorganic materials 0.000 description 2
229910052751 metal Inorganic materials 0.000 description 2
239000002184 metal Substances 0.000 description 2
BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
230000004048 modification Effects 0.000 description 2
238000012986 modification Methods 0.000 description 2
230000020477 pH reduction Effects 0.000 description 2
239000012071 phase Substances 0.000 description 2
239000003265 pulping liquor Substances 0.000 description 2
241000894007 species Species 0.000 description 2
239000007858 starting material Substances 0.000 description 2
238000012360 testing method Methods 0.000 description 2
230000008719 thickening Effects 0.000 description 2
OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
101150034533 ATIC gene Proteins 0.000 description 1
101100515517 Arabidopsis thaliana XI-I gene Proteins 0.000 description 1
101100371682 Caenorhabditis elegans cyk-3 gene Proteins 0.000 description 1
101100421296 Caenorhabditis elegans set-6 gene Proteins 0.000 description 1
240000007681 Catha edulis Species 0.000 description 1
235000006696 Catha edulis Nutrition 0.000 description 1
ZAKOWWREFLAJOT-CEFNRUSXSA-N D-alpha-tocopherylacetate Chemical compound CC(=O)OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C ZAKOWWREFLAJOT-CEFNRUSXSA-N 0.000 description 1
VVNCNSJFMMFHPL-VKHMYHEASA-N D-penicillamine Chemical compound CC(C)(S)[C@@H](N)C(O)=O VVNCNSJFMMFHPL-VKHMYHEASA-N 0.000 description 1
101150039033 Eci2 gene Proteins 0.000 description 1
102100038591 Endothelial cell-selective adhesion molecule Human genes 0.000 description 1
VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
239000005977 Ethylene Substances 0.000 description 1
241000628997 Flos Species 0.000 description 1
101100536695 Gallus gallus TENP gene Proteins 0.000 description 1
101000882622 Homo sapiens Endothelial cell-selective adhesion molecule Proteins 0.000 description 1
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
101100536883 Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513) thi5 gene Proteins 0.000 description 1
241001465754 Metazoa Species 0.000 description 1
241001024304 Mino Species 0.000 description 1
101100270435 Mus musculus Arhgef12 gene Proteins 0.000 description 1
102220483782 Myb/SANT-like DNA-binding domain-containing protein 1_A21D_mutation Human genes 0.000 description 1
241001387976 Pera Species 0.000 description 1
244000046052 Phaseolus vulgaris Species 0.000 description 1
235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
241001296096 Probles Species 0.000 description 1
101100409194 Rattus norvegicus Ppargc1b gene Proteins 0.000 description 1
241000428533 Rhis Species 0.000 description 1
101100256149 Salmonella typhimurium (strain 14028s / SGSC 2262) sarA gene Proteins 0.000 description 1
101100240664 Schizosaccharomyces pombe (strain 972 / ATCC 24843) nmt1 gene Proteins 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
241000193803 Therea Species 0.000 description 1
241000534944 Thia Species 0.000 description 1
229920002522 Wood fibre Polymers 0.000 description 1
QRSFFHRCBYCWBS-UHFFFAOYSA-N [O].[O] Chemical class [O].[O] QRSFFHRCBYCWBS-UHFFFAOYSA-N 0.000 description 1
230000002411 adverse Effects 0.000 description 1
150000001408 amides Chemical class 0.000 description 1
206010003549 asthenia Diseases 0.000 description 1
DQSGVVGOPRWTKI-QVFAWCHISA-N atazanavir sulfate Chemical compound [H+].[H+].[O-]S([O-])(=O)=O.C([C@H](NC(=O)[C@@H](NC(=O)OC)C(C)(C)C)[C@@H](O)CN(CC=1C=CC(=CC=1)C=1N=CC=CC=1)NC(=O)[C@@H](NC(=O)OC)C(C)(C)C)C1=CC=CC=C1 DQSGVVGOPRWTKI-QVFAWCHISA-N 0.000 description 1
230000003190 augmentative effect Effects 0.000 description 1
ATSGLBOJGVTHHC-UHFFFAOYSA-N bis(ethane-1,2-diamine)copper(2+) Chemical compound [Cu+2].NCCN.NCCN ATSGLBOJGVTHHC-UHFFFAOYSA-N 0.000 description 1
238000007664 blowing Methods 0.000 description 1
238000001311 chemical methods and process Methods 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
239000003153 chemical reaction reagent Substances 0.000 description 1
229910001902 chlorine oxide Inorganic materials 0.000 description 1
MAYPHUUCLRDEAZ-UHFFFAOYSA-N chlorine peroxide Inorganic materials ClOOCl MAYPHUUCLRDEAZ-UHFFFAOYSA-N 0.000 description 1
230000001427 coherent effect Effects 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
230000001143 conditioned effect Effects 0.000 description 1
230000001276 controlling effect Effects 0.000 description 1
235000014510 cooky Nutrition 0.000 description 1
238000001816 cooling Methods 0.000 description 1
-1 c~llulosic portion Chemical class 0.000 description 1
229940075911 depen Drugs 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000009792 diffusion process Methods 0.000 description 1
VDQVEACBQKUUSU-UHFFFAOYSA-M disodium;sulfanide Chemical compound [Na+].[Na+].[SH-] VDQVEACBQKUUSU-UHFFFAOYSA-M 0.000 description 1
238000004710 electron pair approximation Methods 0.000 description 1
230000008030 elimination Effects 0.000 description 1
238000003379 elimination reaction Methods 0.000 description 1
239000003344 environmental pollutant Substances 0.000 description 1
235000019253 formic acid Nutrition 0.000 description 1
231100001261 hazardous Toxicity 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
150000002431 hydrogen Chemical class 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
229910001504 inorganic chloride Inorganic materials 0.000 description 1
238000002386 leaching Methods 0.000 description 1
235000019341 magnesium sulphate Nutrition 0.000 description 1
238000005259 measurement Methods 0.000 description 1
239000012528 membrane Substances 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
STEPQTYSZVCJPV-UHFFFAOYSA-N metazachlor Chemical compound CC1=CC=CC(C)=C1N(C(=O)CCl)CN1N=CC=C1 STEPQTYSZVCJPV-UHFFFAOYSA-N 0.000 description 1
101150067766 mpl2 gene Proteins 0.000 description 1
UWBHMRBRLOJJAA-UHFFFAOYSA-N oxaluric acid Chemical compound NC(=O)NC(=O)C(O)=O UWBHMRBRLOJJAA-UHFFFAOYSA-N 0.000 description 1
CPJSUEIXXCENMM-UHFFFAOYSA-N phenacetin Chemical compound CCOC1=CC=C(NC(C)=O)C=C1 CPJSUEIXXCENMM-UHFFFAOYSA-N 0.000 description 1
230000000704 physical effect Effects 0.000 description 1
238000011020 pilot scale process Methods 0.000 description 1
231100000719 pollutant Toxicity 0.000 description 1
229920005646 polycarboxylate Polymers 0.000 description 1
238000002203 pretreatment Methods 0.000 description 1
238000007639 printing Methods 0.000 description 1
BALXUFOVQVENIU-KXNXZCPBSA-N pseudoephedrine hydrochloride Chemical compound [H+].[Cl-].CN[C@@H](C)[C@@H](O)C1=CC=CC=C1 BALXUFOVQVENIU-KXNXZCPBSA-N 0.000 description 1
230000009257 reactivity Effects 0.000 description 1
230000008929 regeneration Effects 0.000 description 1
238000011069 regeneration method Methods 0.000 description 1
238000011160 research Methods 0.000 description 1
230000002441 reversible effect Effects 0.000 description 1
IOVGROKTTNBUGK-SJCJKPOMSA-N ritodrine Chemical compound N([C@@H](C)[C@H](O)C=1C=CC(O)=CC=1)CCC1=CC=C(O)C=C1 IOVGROKTTNBUGK-SJCJKPOMSA-N 0.000 description 1
229920006395 saturated elastomer Polymers 0.000 description 1
229910052708 sodium Inorganic materials 0.000 description 1
239000011734 sodium Substances 0.000 description 1
229910052979 sodium sulfide Inorganic materials 0.000 description 1
239000002195 soluble material Substances 0.000 description 1
238000010561 standard procedure Methods 0.000 description 1
208000006379 syphilis Diseases 0.000 description 1
HZSAJDVWZRBGIF-UHFFFAOYSA-O thiamine monophosphate Chemical compound CC1=C(CCOP(O)(O)=O)SC=[N+]1CC1=CN=C(C)N=C1N HZSAJDVWZRBGIF-UHFFFAOYSA-O 0.000 description 1
231100000331 toxic Toxicity 0.000 description 1
230000002588 toxic effect Effects 0.000 description 1
238000012546 transfer Methods 0.000 description 1
239000002699 waste material Substances 0.000 description 1
239000002025 wood fiber Substances 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)
Dry Formation Of Fiberboard And The Like (AREA)
Detergent Compositions (AREA)

CA002063591A 1990-05-17 1990-05-17 Environmentally improved process for bleaching lignocellulosic materials Expired - Lifetime CA2063591C (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/US1990/002823 WO1991018145A1 (en)	1990-05-17	1990-05-17	Environmentally improved process for bleaching lignocellulosic materials

Publications (2)

Publication Number	Publication Date
CA2063591A1 CA2063591A1 (en)	1991-11-18
CA2063591C true CA2063591C (en)	1998-02-03

Family

ID=22220868

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002063591A Expired - Lifetime CA2063591C (en)	1990-05-17	1990-05-17	Environmentally improved process for bleaching lignocellulosic materials

Country Status (16)

Country	Link
EP (1)	EP0483163B1 (no)
JP (1)	JP2825346B2 (no)
KR (1)	KR920703922A (no)
CN (1)	CN1043798C (no)
AT (1)	ATE122421T1 (no)
AU (1)	AU638017B2 (no)
BR (1)	BR9007533A (no)
CA (1)	CA2063591C (no)
DE (1)	DE69019350T2 (no)
ES (1)	ES2073027T3 (no)
NO (1)	NO300929B1 (no)
PT (1)	PT98487B (no)
RU (1)	RU2102547C1 (no)
SE (1)	SE9200107L (no)
WO (1)	WO1991018145A1 (no)
ZA (1)	ZA915969B (no)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5472572A (en) *	1990-10-26	1995-12-05	Union Camp Patent Holding, Inc.	Reactor for bleaching high consistency pulp with ozone
US5441603A (en) *	1990-05-17	1995-08-15	Union Camp Patent Holding, Inc.	Method for chelation of pulp prior to ozone delignification
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1990
- 1990-05-17 BR BR909007533A patent/BR9007533A/pt not_active IP Right Cessation
- 1990-05-17 ES ES90908787T patent/ES2073027T3/es not_active Expired - Lifetime
- 1990-05-17 CA CA002063591A patent/CA2063591C/en not_active Expired - Lifetime
- 1990-05-17 EP EP90908787A patent/EP0483163B1/en not_active Expired - Lifetime
- 1990-05-17 KR KR1019920700104A patent/KR920703922A/ko active IP Right Grant
- 1990-05-17 AT AT90908787T patent/ATE122421T1/de not_active IP Right Cessation
- 1990-05-17 WO PCT/US1990/002823 patent/WO1991018145A1/en active IP Right Grant
- 1990-05-17 AU AU56768/90A patent/AU638017B2/en not_active Ceased
- 1990-05-17 JP JP2508269A patent/JP2825346B2/ja not_active Expired - Lifetime
- 1990-05-17 DE DE69019350T patent/DE69019350T2/de not_active Expired - Fee Related
- 1990-05-17 RU SU5011189A patent/RU2102547C1/ru active
1991
- 1991-07-29 PT PT98487A patent/PT98487B/pt not_active IP Right Cessation
- 1991-07-30 ZA ZA915969A patent/ZA915969B/xx unknown
- 1991-08-07 CN CN91108650A patent/CN1043798C/zh not_active Expired - Lifetime
1992
- 1992-01-15 SE SE9200107A patent/SE9200107L/xx not_active Application Discontinuation
- 1992-01-16 NO NO920217A patent/NO300929B1/no not_active IP Right Cessation

Also Published As

Publication number	Publication date
CA2063591A1 (en)	1991-11-18
SE9200107D0 (sv)	1992-01-15
DE69019350T2 (de)	1996-02-15
CN1043798C (zh)	1999-06-23
NO920217D0 (no)	1992-01-16
ES2073027T3 (es)	1995-08-01
EP0483163B1 (en)	1995-05-10
ZA915969B (en)	1992-04-29
PT98487B (pt)	1998-06-30
ATE122421T1 (de)	1995-05-15
AU638017B2 (en)	1993-06-17
JP2825346B2 (ja)	1998-11-18
KR920703922A (ko)	1992-12-18
BR9007533A (pt)	1992-04-28
NO300929B1 (no)	1997-08-18
EP0483163A1 (en)	1992-05-06
RU2102547C1 (ru)	1998-01-20
JPH05500243A (ja)	1993-01-21
NO920217L (no)	1992-03-05
DE69019350D1 (de)	1995-06-14
WO1991018145A1 (en)	1991-11-28
AU5676890A (en)	1991-12-10
SE9200107L (en)	1992-03-13
CN1069304A (zh)	1993-02-24
EP0483163A4 (en)	1992-08-05
PT98487A (pt)	1993-01-29

Legal Events

Date	Code	Title	Description
1994-01-07	EEER	Examination request
2010-05-17	MKLA	Lapsed
2012-12-02	MKEC	Expiry (correction)
2023-05-26	MKEC	Expiry (correction)	Effective date: 20121202

Publication	Publication Date	Title
CA2063591C (en)	1998-02-03	Environmentally improved process for bleaching lignocellulosic materials
US5296099A (en)	1994-03-22	Environmentally improved process for bleaching lignocellulosic materials with oxygen, ozone and chlorine dioxide
US5164043A (en)	1992-11-17	Environmentally improved process for bleaching lignocellulosic materials with ozone
CA1259456A (en)	1989-09-19	Enhanced oxidative extraction
US5211811A (en)	1993-05-18	Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
US5188708A (en)	1993-02-23	Process for high consistency oxygen delignification followed by ozone relignification
US5409570A (en)	1995-04-25	Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
FI105213B (fi)	2000-06-30	Menetelmä valkaistun massan valmistamiseksi lignoselluloosamateriaalista
CA1164704A (en)	1984-04-03	Method for improving the washing of cellulose pulps
EP0542147B1 (en)	1997-01-29	Cleaning and bleaching of secondary fiber
US5529660A (en)	1996-06-25	Method of reducing fluorescence in deinked pulp by treating pulp with ozone and a bleaching agent
EP0588704B1 (en)	2000-03-08	Recovery of oxygen-rich gas from ozone bleaching processes
CA1175610A (en)	1984-10-09	Process for alkaline oxygen gas bleaching of cellulose pulp
US5441603A (en)	1995-08-15	Method for chelation of pulp prior to ozone delignification
CA1147909A (en)	1983-06-14	Method for delignifying and/or bleaching cellulose pulp
CA1275759C (en)	1990-11-06	Method and apparatus for alkaline delignification of lignocellulosic fibrous material
EP0902120A1 (en)	1999-03-17	Process for bleaching a paper pulp with ozone and chlorine dioxide
EP0720676A1 (en)	1996-07-10	Improved method for bleaching lignocellulosic pulp
CA2150810A1 (en)	1994-09-15	Process for bleaching pulp
Colodette et al.	2005	Progress in eucalyptus kraft pulp bleaching
Valchev	2013	Chemical pulp bleaching
JP2812056B2 (ja)	1998-10-15	リグノセルロース物質の漂白方法
EP0539381A1 (en)	1993-05-05	Pulp alkali addition process for high consistency oxygen delignification
RU2123552C1 (ru)	1998-12-20	Способ отбелки целлюлозы
KR19990023814A (ko)	1999-03-25	오존을 사용한 염소 원소 비함유 표백 방법