FI62360B - Foerfarande foer delignifiering och blekning av cellulosamassa - Google Patents
Foerfarande foer delignifiering och blekning av cellulosamassa Download PDFInfo
- Publication number
- FI62360B FI62360B FI751138A FI751138A FI62360B FI 62360 B FI62360 B FI 62360B FI 751138 A FI751138 A FI 751138A FI 751138 A FI751138 A FI 751138A FI 62360 B FI62360 B FI 62360B
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- och
- cellulosamassa
- blekning
- oxygen
- Prior art date
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 23
- 238000000034 method Methods 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 229920005610 lignin Polymers 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 7
- 239000000347 magnesium hydroxide Substances 0.000 description 7
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 7
- 239000002585 base Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000010411 cooking Methods 0.000 description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 5
- 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 4
- 239000003513 alkali Substances 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- SPAGIJMPHSUYSE-UHFFFAOYSA-N Magnesium peroxide Chemical compound [Mg+2].[O-][O-] SPAGIJMPHSUYSE-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 229960004995 magnesium peroxide Drugs 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 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
- D21C9/1068—Bleaching ; Apparatus therefor with O2
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- External Artificial Organs (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO741375A NO138491B (no) | 1974-04-17 | 1974-04-17 | Fremgangsmaate ved delignifisering og bleking av cellulosemasse |
| NO741375 | 1974-04-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI751138A FI751138A (da) | 1975-10-18 |
| FI62360B true FI62360B (fi) | 1982-08-31 |
Family
ID=19881564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI751138A FI62360B (fi) | 1974-04-17 | 1975-04-16 | Foerfarande foer delignifiering och blekning av cellulosamassa |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4132589A (da) |
| AT (1) | ATA276775A (da) |
| CA (1) | CA1042612A (da) |
| DE (1) | DE2515517A1 (da) |
| FI (1) | FI62360B (da) |
| FR (1) | FR2268107B1 (da) |
| NO (1) | NO138491B (da) |
| SE (1) | SE415579B (da) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2721402C2 (de) * | 1977-05-12 | 1984-04-12 | Degussa Ag, 6000 Frankfurt | Verfahren zum Bleichen von Zellstoff |
| US5364465A (en) * | 1992-12-07 | 1994-11-15 | Archer Daniels Midland Company | Method of producing protein products for bright paper coating applications |
| US5676846A (en) * | 1996-05-16 | 1997-10-14 | Degussa Corporation | Process for the detoxification of effluents containing free or complexed cyanides |
| US7052578B2 (en) * | 2000-01-28 | 2006-05-30 | Martin Marietta Magnesia Specialties, Inc. | Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp |
| US20140182582A1 (en) * | 2012-12-31 | 2014-07-03 | Api Intellectual Property Holdings, Llc | Processes for making cellulose with very low lignin content for glucose, high-purity cellulose, or cellulose derivatives |
| CN114908598B (zh) * | 2022-02-26 | 2022-12-09 | 北京林业大学 | 一种纸浆氧漂方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US415608A (en) * | 1889-11-19 | Process of bleaching | ||
| US321452A (en) * | 1885-07-07 | Goldsbtjby haedbn pond | ||
| CA918978A (en) * | 1970-01-08 | 1973-01-16 | G. Jamieson Allan | Oxygen bleaching |
| US3843473A (en) * | 1971-08-23 | 1974-10-22 | Mo Och Domsjoe Ab | Impregnation of cellulosic pulp under superatmospheric pressure with waste alkaline oxygan gas bleaching liquor followed by oxygen-alkali bleaching |
-
1974
- 1974-04-17 NO NO741375A patent/NO138491B/no unknown
-
1975
- 1975-04-09 CA CA224,214A patent/CA1042612A/en not_active Expired
- 1975-04-09 DE DE19752515517 patent/DE2515517A1/de not_active Withdrawn
- 1975-04-11 AT AT752767A patent/ATA276775A/de not_active Application Discontinuation
- 1975-04-14 FR FR7511557A patent/FR2268107B1/fr not_active Expired
- 1975-04-14 US US05/568,055 patent/US4132589A/en not_active Expired - Lifetime
- 1975-04-16 SE SE7504421A patent/SE415579B/xx unknown
- 1975-04-16 FI FI751138A patent/FI62360B/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CA1042612A (en) | 1978-11-21 |
| FI751138A (da) | 1975-10-18 |
| US4132589A (en) | 1979-01-02 |
| FR2268107A1 (da) | 1975-11-14 |
| SE7504421L (sv) | 1975-10-20 |
| NO741375L (da) | 1975-10-20 |
| SE415579B (sv) | 1980-10-13 |
| FR2268107B1 (da) | 1980-01-25 |
| ATA276775A (de) | 1978-01-15 |
| DE2515517A1 (de) | 1975-10-30 |
| NO138491B (no) | 1978-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FA | Application withdrawn |
Owner name: CHRISTENSEN, PER KOCH |