IL33277A - Method of producing paper making pulp in a high yield and with a high degree of brightness - Google Patents
Method of producing paper making pulp in a high yield and with a high degree of brightnessInfo
- Publication number
- IL33277A IL33277A IL33277A IL3327769A IL33277A IL 33277 A IL33277 A IL 33277A IL 33277 A IL33277 A IL 33277A IL 3327769 A IL3327769 A IL 3327769A IL 33277 A IL33277 A IL 33277A
- Authority
- IL
- Israel
- Prior art keywords
- brightness
- pulp
- solution
- sodium
- mass
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 11
- 239000012670 alkaline solution Substances 0.000 claims description 10
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 8
- 239000012279 sodium borohydride Substances 0.000 claims description 7
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 238000010411 cooking Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- -1 alkali metal bisulfite Chemical class 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- 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 15
- 229910052708 sodium Inorganic materials 0.000 description 15
- 239000011734 sodium Substances 0.000 description 15
- 235000011121 sodium hydroxide Nutrition 0.000 description 10
- 239000002023 wood Substances 0.000 description 9
- 241000219000 Populus Species 0.000 description 8
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 8
- 235000010265 sodium sulphite Nutrition 0.000 description 4
- 239000000123 paper Substances 0.000 description 3
- 241000218657 Picea Species 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241000218596 Picea rubens Species 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000003172 aldehyde group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000008366 buffered solution Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000686 lactone group Chemical group 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000012978 lignocellulosic material Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000010875 treated wood Substances 0.000 description 1
- 239000002699 waste material 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Vehicle Body Suspensions (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2028569 | 1969-07-30 | ||
| IT2255069 | 1969-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL33277A0 IL33277A0 (en) | 1969-12-31 |
| IL33277A true IL33277A (en) | 1973-05-31 |
Family
ID=26327474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL33277A IL33277A (en) | 1969-07-30 | 1969-10-29 | Method of producing paper making pulp in a high yield and with a high degree of brightness |
Country Status (13)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2615874B1 (fr) * | 1987-05-25 | 1992-02-21 | Atochem | Procede de preparation de pates chimicothermomecaniques |
| US5338402A (en) * | 1987-05-25 | 1994-08-16 | Societe Atochem | Process for preparing a bleached chemithermomechanical pulp |
| JP4738662B2 (ja) * | 2001-08-03 | 2011-08-03 | 日本製紙株式会社 | 新聞用紙 |
| DE102006061480A1 (de) * | 2006-12-23 | 2008-06-26 | Voith Patent Gmbh | Verfahren zum Herstellen von Faserstoff |
-
1969
- 1969-10-24 CH CH1589869A patent/CH510168A/it not_active IP Right Cessation
- 1969-10-27 LU LU59701D patent/LU59701A1/xx unknown
- 1969-10-29 IL IL33277A patent/IL33277A/en unknown
- 1969-10-30 BE BE741017D patent/BE741017A/xx unknown
- 1969-10-30 NO NO04300/69A patent/NO128667B/no unknown
- 1969-11-05 GB GB5427369A patent/GB1288243A/en not_active Expired
- 1969-11-08 RO RO61508A patent/RO61970A/ro unknown
- 1969-11-12 YU YU2831/69A patent/YU33632B/xx unknown
- 1969-11-12 DD DD143681A patent/DD98711A1/xx unknown
- 1969-11-13 JP JP44090524A patent/JPS5025041B1/ja active Pending
- 1969-11-13 SU SU1375937A patent/SU524533A3/ru active
- 1969-11-20 HU HUVI710A patent/HU163366B/hu unknown
-
1970
- 1970-01-05 NL NL7000037A patent/NL7000037A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| HU163366B (enrdf_load_stackoverflow) | 1973-07-28 |
| DD98711A1 (enrdf_load_stackoverflow) | 1973-07-12 |
| JPS5025041B1 (enrdf_load_stackoverflow) | 1975-08-20 |
| NL7000037A (enrdf_load_stackoverflow) | 1971-02-02 |
| YU283169A (en) | 1977-04-30 |
| YU33632B (en) | 1977-10-31 |
| NO128667B (enrdf_load_stackoverflow) | 1973-12-27 |
| GB1288243A (enrdf_load_stackoverflow) | 1972-09-06 |
| RO61970A (enrdf_load_stackoverflow) | 1977-07-15 |
| CH510168A (it) | 1971-07-15 |
| BE741017A (enrdf_load_stackoverflow) | 1970-04-01 |
| LU59701A1 (enrdf_load_stackoverflow) | 1970-01-12 |
| SU524533A3 (ru) | 1976-08-05 |
| IL33277A0 (en) | 1969-12-31 |
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