NO134563B - - Google Patents

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Info

Publication number: NO134563B
Authority: NO; Norway
Prior art keywords: alkali; digestion; wood; digestion process; treatment
Prior art date: 1970-05-13

Application number

NO1803/71A

Other languages

English (en)

Norwegian (no)

Other versions

NO134563C (de

Inventor

Hans Olof Samuelson

Sture Erik Olof Noreus

Original Assignee

Mo Och Domsjoe Ab

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.)

1970-05-13

Filing date

1971-05-12

Publication date

1976-07-26

1971-05-12 Application filed by Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab

1976-07-26 Publication of NO134563B publication Critical patent/NO134563B/no

1976-11-03 Publication of NO134563C publication Critical patent/NO134563C/no

Links

238000000034 method Methods 0.000 claims description 70
230000029087 digestion Effects 0.000 claims description 68
239000002023 wood Substances 0.000 claims description 57
230000008569 process Effects 0.000 claims description 52
239000003513 alkali Substances 0.000 claims description 27
239000007788 liquid Substances 0.000 claims description 25
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
229910052760 oxygen Inorganic materials 0.000 claims description 21
239000001301 oxygen Substances 0.000 claims description 21
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 16
229920002678 cellulose Polymers 0.000 claims description 16
239000001913 cellulose Substances 0.000 claims description 16
238000002203 pretreatment Methods 0.000 claims description 14
BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 13
229910001854 alkali hydroxide Inorganic materials 0.000 claims description 9
150000008044 alkali metal hydroxides Chemical class 0.000 claims description 9
238000004519 manufacturing process Methods 0.000 claims description 9
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
239000002994 raw material Substances 0.000 claims description 4
230000002378 acidificating effect Effects 0.000 claims description 3
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
150000002500 ions Chemical class 0.000 claims description 3
239000004094 surface-active agent Substances 0.000 claims description 3
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
239000000872 buffer Substances 0.000 claims description 2
229910017052 cobalt Inorganic materials 0.000 claims description 2
239000010941 cobalt Substances 0.000 claims description 2
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
229910052802 copper Inorganic materials 0.000 claims description 2
239000010949 copper Substances 0.000 claims description 2
229910052742 iron Inorganic materials 0.000 claims description 2
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 claims description 2
229910052723 transition metal Inorganic materials 0.000 claims description 2
150000003624 transition metals Chemical class 0.000 claims description 2
229910052720 vanadium Inorganic materials 0.000 claims description 2
241000257303 Hymenoptera Species 0.000 claims 1
LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
238000011282 treatment Methods 0.000 description 32
HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 26
MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 24
229910001882 dioxygen Inorganic materials 0.000 description 23
238000010411 cooking Methods 0.000 description 21
238000007792 addition Methods 0.000 description 20
229920005610 lignin Polymers 0.000 description 20
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 12
239000000126 substance Substances 0.000 description 12
238000002474 experimental method Methods 0.000 description 9
239000007789 gas Substances 0.000 description 9
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 8
239000003112 inhibitor Substances 0.000 description 8
239000000463 material Substances 0.000 description 8
239000002253 acid Substances 0.000 description 7
238000004061 bleaching Methods 0.000 description 7
238000009835 boiling Methods 0.000 description 7
230000000694 effects Effects 0.000 description 7
238000005470 impregnation Methods 0.000 description 6
239000000123 paper Substances 0.000 description 6
229910021653 sulphate ion Inorganic materials 0.000 description 6
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 5
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
229920001131 Pulp (paper) Polymers 0.000 description 5
239000000835 fiber Substances 0.000 description 5
239000011777 magnesium Substances 0.000 description 5
229910052749 magnesium Inorganic materials 0.000 description 5
150000002681 magnesium compounds Chemical class 0.000 description 5
238000001556 precipitation Methods 0.000 description 5
235000017550 sodium carbonate Nutrition 0.000 description 5
229910000029 sodium carbonate Inorganic materials 0.000 description 5
239000011122 softwood Substances 0.000 description 5
235000018185 Betula X alpestris Nutrition 0.000 description 4
235000018212 Betula X uliginosa Nutrition 0.000 description 4
229920000297 Rayon Polymers 0.000 description 4
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
150000007513 acids Chemical class 0.000 description 4
230000008901 benefit Effects 0.000 description 4
OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
239000000203 mixture Substances 0.000 description 4
239000002964 rayon Substances 0.000 description 4
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 3
MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
-1 alkylbenzene sulphonate Chemical class 0.000 description 3
230000009286 beneficial effect Effects 0.000 description 3
150000001720 carbohydrates Chemical class 0.000 description 3
235000014633 carbohydrates Nutrition 0.000 description 3
230000015556 catabolic process Effects 0.000 description 3
238000006243 chemical reaction Methods 0.000 description 3
239000008139 complexing agent Substances 0.000 description 3
239000012634 fragment Substances 0.000 description 3
ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
239000001095 magnesium carbonate Substances 0.000 description 3
229910000021 magnesium carbonate Inorganic materials 0.000 description 3
150000003839 salts Chemical class 0.000 description 3
RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
235000012239 silicon dioxide Nutrition 0.000 description 3
238000012546 transfer Methods 0.000 description 3
238000005406 washing Methods 0.000 description 3
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
239000004155 Chlorine dioxide Substances 0.000 description 2
LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
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 2
BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
241000218657 Picea Species 0.000 description 2
235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
241000018646 Pinus brutia Species 0.000 description 2
235000011613 Pinus brutia Nutrition 0.000 description 2
229920000388 Polyphosphate Polymers 0.000 description 2
DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
238000010521 absorption reaction Methods 0.000 description 2
150000001447 alkali salts Chemical class 0.000 description 2
238000007664 blowing Methods 0.000 description 2
239000001569 carbon dioxide Substances 0.000 description 2
229910002092 carbon dioxide Inorganic materials 0.000 description 2
239000003795 chemical substances by application Substances 0.000 description 2
235000019398 chlorine dioxide Nutrition 0.000 description 2
150000001875 compounds Chemical class 0.000 description 2
230000002349 favourable effect Effects 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
150000002680 magnesium Chemical class 0.000 description 2
VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
239000000347 magnesium hydroxide Substances 0.000 description 2
229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
159000000003 magnesium salts Chemical class 0.000 description 2
229910021645 metal ion Inorganic materials 0.000 description 2
QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
230000001590 oxidative effect Effects 0.000 description 2
239000001205 polyphosphate Substances 0.000 description 2
235000011176 polyphosphates Nutrition 0.000 description 2
KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
238000004064 recycling Methods 0.000 description 2
230000009467 reduction Effects 0.000 description 2
229910052708 sodium Inorganic materials 0.000 description 2
239000011734 sodium Substances 0.000 description 2
239000004289 sodium hydrogen sulphite Substances 0.000 description 2
235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
239000002699 waste material Substances 0.000 description 2
URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 description 1
CYJRNFFLTBEQSQ-UHFFFAOYSA-N 8-(3-methyl-1-benzothiophen-5-yl)-N-(4-methylsulfonylpyridin-3-yl)quinoxalin-6-amine Chemical compound CS(=O)(=O)C1=C(C=NC=C1)NC=1C=C2N=CC=NC2=C(C=1)C=1C=CC2=C(C(=CS2)C)C=1 CYJRNFFLTBEQSQ-UHFFFAOYSA-N 0.000 description 1
244000089654 Betula populifolia Species 0.000 description 1
241000219495 Betulaceae Species 0.000 description 1
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
241000218631 Coniferophyta Species 0.000 description 1
QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
241000196324 Embryophyta Species 0.000 description 1
IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical class C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-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
229920002488 Hemicellulose Polymers 0.000 description 1
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
229920001273 Polyhydroxy acid Polymers 0.000 description 1
241000219000 Populus Species 0.000 description 1
241000183024 Populus tremula Species 0.000 description 1
239000013543 active substance Substances 0.000 description 1
230000006978 adaptation Effects 0.000 description 1
229910052783 alkali metal Inorganic materials 0.000 description 1
229910052910 alkali metal silicate Inorganic materials 0.000 description 1
150000001340 alkali metals Chemical class 0.000 description 1
229910000147 aluminium phosphate Inorganic materials 0.000 description 1
239000007844 bleaching agent Substances 0.000 description 1
239000006172 buffering agent Substances 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
238000009993 causticizing Methods 0.000 description 1
239000000460 chlorine Substances 0.000 description 1
229910052801 chlorine Inorganic materials 0.000 description 1
229910001919 chlorite Inorganic materials 0.000 description 1
229910052619 chlorite group Inorganic materials 0.000 description 1
QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
238000009833 condensation Methods 0.000 description 1
230000005494 condensation Effects 0.000 description 1
238000011109 contamination Methods 0.000 description 1
238000006731 degradation reaction Methods 0.000 description 1
238000006073 displacement reaction Methods 0.000 description 1
238000004090 dissolution Methods 0.000 description 1
150000002170 ethers Chemical class 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
150000002191 fatty alcohols Chemical class 0.000 description 1
239000000945 filler Substances 0.000 description 1
238000001914 filtration Methods 0.000 description 1
239000006260 foam Substances 0.000 description 1
210000002837 heart atrium Anatomy 0.000 description 1
229910001385 heavy metal Inorganic materials 0.000 description 1
WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Inorganic materials Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 1
230000006872 improvement Effects 0.000 description 1
230000007774 longterm Effects 0.000 description 1
229910052943 magnesium sulfate Inorganic materials 0.000 description 1
CSNNHWWHGAXBCP-UHFFFAOYSA-L magnesium sulphate Substances [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
235000019341 magnesium sulphate Nutrition 0.000 description 1
238000005259 measurement Methods 0.000 description 1
238000002156 mixing Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000007935 neutral effect Effects 0.000 description 1
229910017604 nitric acid Inorganic materials 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
150000007524 organic acids Chemical class 0.000 description 1
235000005985 organic acids Nutrition 0.000 description 1
235000006408 oxalic acid Nutrition 0.000 description 1
230000035515 penetration Effects 0.000 description 1
239000004033 plastic Substances 0.000 description 1
229920000151 polyglycol Polymers 0.000 description 1
239000010695 polyglycol Substances 0.000 description 1
229920000137 polyphosphoric acid Polymers 0.000 description 1
238000003825 pressing Methods 0.000 description 1
238000012545 processing Methods 0.000 description 1
230000001681 protective effect Effects 0.000 description 1
238000005086 pumping Methods 0.000 description 1
230000035484 reaction time Effects 0.000 description 1
238000011084 recovery Methods 0.000 description 1
239000013074 reference sample Substances 0.000 description 1
230000001105 regulatory effect Effects 0.000 description 1
239000011347 resin Substances 0.000 description 1
229920005989 resin Polymers 0.000 description 1
150000003388 sodium compounds Chemical class 0.000 description 1
239000007858 starting material Substances 0.000 description 1
238000003756 stirring Methods 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
239000002341 toxic gas Substances 0.000 description 1
GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- D21C3/263—Multistage processes at least one stage being in presence of oxygen

Landscapes

Chemical & Material Sciences (AREA)
Inorganic Chemistry (AREA)
Paper (AREA)

NO1803/71A 1970-05-13 1971-05-12 NO134563C (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE06569/70A SE355614B (de)	1970-05-13	1970-05-13

Publications (2)

Publication Number	Publication Date
NO134563B true NO134563B (de)	1976-07-26
NO134563C NO134563C (de)	1976-11-03

Family

ID=20269035

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO1803/71A NO134563C (de)	1970-05-13	1971-05-12

Country Status (12)

Country	Link
US (1)	US3769152A (de)
JP (1)	JPS5025042B1 (de)
AT (1)	AT304251B (de)
BR (1)	BR7102728D0 (de)
CA (1)	CA935957A (de)
DE (1)	DE2123542C3 (de)
FI (1)	FI54343C (de)
FR (1)	FR2091515A5 (de)
NO (1)	NO134563C (de)
SE (1)	SE355614B (de)
SU (1)	SU574164A3 (de)
ZA (1)	ZA712744B (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI52877B (de) *	1972-11-16	1977-08-31	Ahlstroem Oy
SE373395B (sv) *	1972-12-19	1975-02-03	Mo Och Domsjoe Ab	Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel
SE379069B (de) *	1973-08-27	1975-09-22	Kamyr Ab
FI58360C (fi) *	1974-06-14	1981-01-12	Mo Och Domsjoe Ab	Foerfarande foer delignifiering av lignocellulosahaltigt material med hjaelp av syreinnehaollande gas och apparatur foer utfoerande av detta foerfarande
US4152197A (en) *	1974-09-23	1979-05-01	Mo Och Domsjo Ab	Process for preparing high-yield cellulose pulps by vapor phase pulping an unpulped portion of lignocellulosic material and a partially chemically pulped portion
US4119486A (en) *	1975-08-14	1978-10-10	Westvaco Corporation	Process for bleaching wood pulp with ozone in the presence of a cationic surfactant
US4338158A (en) *	1976-04-09	1982-07-06	Weyerhaeuser Company	Pulping in the presence of a protector
US4172006A (en) *	1976-08-26	1979-10-23	Weyerhaeuser Company	Method of delignifying wood chips with oxygen by adding cooking liquor under pressure
CA1079457A (en) *	1976-09-13	1980-06-17	Robert C. Eckert	Manganic ion bleaching process
JPS6059357B2 (ja) *	1977-05-18	1985-12-24	本州製紙株式会社	パルプの製造方法
US4303470A (en) *	1979-06-15	1981-12-01	Weyerhaeuser Company	Method and apparatus for mixing gases with a wood pulp slurry
US4295926A (en) *	1979-06-15	1981-10-20	Weyerhaeuser Company	Method and apparatus for treating pulp with oxygen
US4295927A (en) *	1979-06-15	1981-10-20	Weyerhaeuser Company	Method and apparatus for treating pulp with oxygen and storing the treated pulp
US4298426A (en) *	1979-06-15	1981-11-03	Weyerhaeuser Company	Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
US4295925A (en) *	1979-06-15	1981-10-20	Weyerhaeuser Company	Treating pulp with oxygen
IT1209352B (it) *	1980-09-22	1989-07-16	Nardi Franco	Processo per la produzione di cellulose chimiche e/o paste per carte, nonche'impianto e relativi componenti per l'attuazione del processo indicato
JPS58501328A (ja) *	1981-09-04	1983-08-11	ウェヤ−ハウザ−・カンパニ−	パルプの酸素での処理
US4431480A (en) *	1981-10-27	1984-02-14	The Black Clawson Company	Method and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reaction
US4664832A (en) *	1984-09-28	1987-05-12	State Of South Dakota As Represented By The Department Of Transportation	Deicing chemicals and their preparation from polysaccharide sources
US4622100A (en) *	1984-10-01	1986-11-11	International Paper Company	Process for the delignification of lignocellulosic material with oxygen, ferricyanide, and a protector
US4622101A (en) *	1984-10-01	1986-11-11	International Paper Company	Method of oxygen bleaching with ferricyanide lignocellulosic material
DE3923728A1 (de) *	1989-07-18	1991-01-24	Degussa	Verfahren zur stabilisierung der viskositaet von zellstoffen
US5302244A (en) *	1992-02-18	1994-04-12	Domtar Inc.	Oxygen delignification of waste cellulosic paper products
US5858021A (en) *	1996-10-31	1999-01-12	Kimberly-Clark Worldwide, Inc.	Treatment process for cellulosic fibers
CA2356444C (en) *	1999-02-15	2009-12-15	Kiram Ab	Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals
WO2001059204A1 (en) *	2000-02-14	2001-08-16	Kiram Ab	Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals
TR201907217T4 (tr) *	2002-05-29	2019-06-21	Sekisui Chemical Co Ltd	Tabanlı kan tahlili tüpü, kan tahlili tüpü için tıkaç ve kan tahlili kabı.
SE525773C2 (sv) *	2003-09-24	2005-04-26	Kvaerner Pulping Tech	Metod och arrangemang för syrgasdelignifiering av cellulosamassa med pH-reglering i slutfasen
CN1544752A (zh) *	2003-11-28	2004-11-10		清洁制浆催化剂及其应用工艺
CN103492050B (zh) *	2011-04-29	2016-08-17	吉奥森泰克咨询公司	减小有机液体体积的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA694720A (en) *		1964-09-22	G. Gillaspie Athey	Method of bleaching cellulosic pulps
GB576510A (en) *	1944-03-16	1946-04-08	Henry Dreyfus	Improvements in or relating to the production of cellulose
CA553349A (en) *	1950-10-04	1958-02-18	C. Harris George	Pulping process
NL90306C (de) *	1951-02-28
US3013933A (en) *	1953-01-28	1961-12-19	Rayonier Inc	Method for preparation of wood cellulose
FR72957E (de) *	1956-11-05
US2926114A (en) *	1957-08-12	1960-02-23	Kimberly Clark Co	Manufacture of cellulosic products
NL97796C (de) *	1958-05-29
GB885605A (en) *	1958-09-11	1961-12-28	Stora Kopparbergs Bergslags Ab	Improved method for the production of neutral sulfite pulp
FR1387853A (fr) *	1963-09-19	1965-02-05	Air Liquide	Délignification et blanchiment des pâtes cellulosiques chimiques et mi-chimiques
SE314581B (de) *	1968-10-29	1969-09-08	Mo Och Domsjoe Ab
SE335053B (de) *	1969-05-13	1971-05-10	Mo Och Domsjoe Ab

1970
- 1970-05-13 SE SE06569/70A patent/SE355614B/xx unknown
1971
- 1971-02-26 US US00119375A patent/US3769152A/en not_active Expired - Lifetime
- 1971-03-08 CA CA107130A patent/CA935957A/en not_active Expired
- 1971-04-06 FI FI971/71A patent/FI54343C/fi active
- 1971-04-28 ZA ZA712744A patent/ZA712744B/xx unknown
- 1971-05-06 BR BR2728/71A patent/BR7102728D0/pt unknown
- 1971-05-06 SU SU7101653816A patent/SU574164A3/ru active
- 1971-05-12 FR FR7117192A patent/FR2091515A5/fr not_active Expired
- 1971-05-12 NO NO1803/71A patent/NO134563C/no unknown
- 1971-05-12 DE DE2123542A patent/DE2123542C3/de not_active Expired
- 1971-05-13 AT AT418271A patent/AT304251B/de not_active IP Right Cessation
- 1971-05-13 JP JP46031655A patent/JPS5025042B1/ja active Pending

Also Published As

Publication number	Publication date
FR2091515A5 (de)	1972-01-14
NO134563C (de)	1976-11-03
DE2123542B2 (de)	1973-10-25
ZA712744B (en)	1972-01-26
SU574164A3 (ru)	1977-09-25
FI54343B (fi)	1978-07-31
SE355614B (de)	1973-04-30
BR7102728D0 (pt)	1973-06-07
JPS5025042B1 (de)	1975-08-20
FI54343C (fi)	1978-11-10
DE2123542A1 (de)	1971-11-25
US3769152A (en)	1973-10-30
DE2123542C3 (de)	1974-05-22
AT304251B (de)	1972-12-27
CA935957A (en)	1973-10-30

Publication	Publication Date	Title
NO134563B (de)	1976-07-26
CA1226705A (en)	1987-09-15	Chemithermomechanical pulping process employing separate alkali and sulfite treatments
CA2651483C (en)	2013-06-18	Methods for carbonate pretreatment and pulping of cellulosic material
US3944463A (en)	1976-03-16	Pulping of lignocellulosic material with oxygen in two stages at increasing pH
US4507172A (en)	1985-03-26	Kraft pulping process
NO140535B (no)	1979-06-11	Fremgangsmaate for fremstilling av cellulosemasse ved oppslutning med oksygen
NO124320B (de)	1972-04-04
US5183535A (en)	1993-02-02	Process for preparing kraft pulp using black liquor pretreatment reaction
CA1080914A (en)	1980-07-08	Pulping of hardwood with sodium sulfide and sodium hydroxide while generating hydrogen sulfide in situ in the initial pulping stages
AU639304B2 (en)	1993-07-22	Process for preparing kraft pulp
US3567572A (en)	1971-03-02	Polysulfide liquor impregnation of lignocellulose materials in a multistage pulping process
US6569285B2 (en)	2003-05-27	Process for gas phase pretreating of lignocellulosic containing material
US4750973A (en)	1988-06-14	Process for reducing carbohydrate losses in the sulfate pulping of wood by pretreating the wood with oxygen and nitrogen oxides
US3520773A (en)	1970-07-14	Alkaline pulping processes with chemical pretreatment
NO152342B (no)	1985-06-03	Fremgangsmaate til delignifisering av lignocellulosemateriale med alkalisk vaeske i naervaer av et additiv
AU779711B2 (en)	2005-02-10	Pulping process
NO773750L (no)	1978-05-05	Fremgangsmaate ved koking av lignocelluloseholdig materiale
NO140605B (no)	1979-06-25	Fremgangsmaate ved fjernelse av lignin fra lignocelluloseholdige materialer
US3092535A (en)	1963-06-04	Sulphite pulping process
FI85725B (fi)	1992-02-14	Foerfarande foer delignifiering av cellulosamaterial.
Andrew et al.	2014	Bleaching of kraft pulps produced from green liquor prehydrolyzed South African Eucalyptus grandis wood chips
NO831946L (no)	1983-12-05	Massekokingsprosess og preparat for gjennomfoering av denne
US1848662A (en)	1932-03-08	of berlin
SU779471A1 (ru)	1980-11-15	Способ получени целлюлозы
GB478943A (en)	1938-01-24	System of obtaining and treating cellulose and product thereof