FI62869C - Foerfarande i flera steg foer klorfattig helblekning av cellulosa - Google Patents
Foerfarande i flera steg foer klorfattig helblekning av cellulosa Download PDFInfo
- Publication number
- FI62869C FI62869C FI753314A FI753314A FI62869C FI 62869 C FI62869 C FI 62869C FI 753314 A FI753314 A FI 753314A FI 753314 A FI753314 A FI 753314A FI 62869 C FI62869 C FI 62869C
- Authority
- FI
- Finland
- Prior art keywords
- bleaching
- pulp
- helblekning
- cellulosa
- peroxide
- Prior art date
Links
- 238000004061 bleaching Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 16
- 150000002978 peroxides Chemical class 0.000 description 13
- 238000005660 chlorination reaction Methods 0.000 description 10
- 239000003513 alkali Substances 0.000 description 9
- 239000000460 chlorine Substances 0.000 description 9
- 229910052801 chlorine Inorganic materials 0.000 description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000008139 complexing agent Substances 0.000 description 3
- 238000010411 cooking Methods 0.000 description 3
- 241000196324 Embryophyta Species 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
- 239000002253 acid Substances 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 235000014347 soups Nutrition 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- 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 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 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 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- LVGQIQHJMRUCRM-UHFFFAOYSA-L calcium bisulfite Chemical compound [Ca+2].OS([O-])=O.OS([O-])=O LVGQIQHJMRUCRM-UHFFFAOYSA-L 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 235000010260 calcium hydrogen sulphite Nutrition 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- MAYPHUUCLRDEAZ-UHFFFAOYSA-N chlorine peroxide Inorganic materials ClOOCl MAYPHUUCLRDEAZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229960003330 pentetic acid Drugs 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000002023 wood 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Cosmetics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2538673 | 1975-08-30 | ||
| DE2538673A DE2538673C2 (de) | 1975-08-30 | 1975-08-30 | Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI753314A7 FI753314A7 (enrdf_load_stackoverflow) | 1977-03-01 |
| FI62869B FI62869B (fi) | 1982-11-30 |
| FI62869C true FI62869C (fi) | 1983-03-10 |
Family
ID=5955230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI753314A FI62869C (fi) | 1975-08-30 | 1975-11-25 | Foerfarande i flera steg foer klorfattig helblekning av cellulosa |
Country Status (17)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2416297A1 (fr) * | 1978-01-31 | 1979-08-31 | Europeen Cellulose | Procede anti-polluant de blanchiment de pate a papier |
| FR2432574A1 (fr) * | 1978-08-01 | 1980-02-29 | Europeen Cellulose | Procede de blanchiment de pate a papier |
| FR2572431B1 (fr) * | 1984-10-25 | 1987-12-04 | Centre Tech Ind Papier | Procede pour la preparation des pates papetieres chimiques en vue du blanchiment. |
| DK0402335T4 (da) * | 1989-06-06 | 2001-06-25 | Eka Chemicals Ab | Fremgangsmåde til blegning af lignocelluloseholdigpulp |
| SE9001481L (sv) * | 1990-04-23 | 1991-10-24 | Eka Nobel Ab | Reduktion av halogenorganiska foereningar i blekeriavlopp |
| SE466061B (sv) * | 1990-04-23 | 1991-12-09 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE753531C (de) * | 1938-11-09 | 1953-05-18 | Degussa | Verfahren zum Bleichen von Zellstoff |
| DE2327900C3 (de) * | 1973-06-01 | 1985-02-07 | Degussa Ag, 6000 Frankfurt | Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz |
-
1975
- 1975-08-30 DE DE2538673A patent/DE2538673C2/de not_active Expired
- 1975-11-12 AT AT861075A patent/AT340765B/de not_active IP Right Cessation
- 1975-11-25 FI FI753314A patent/FI62869C/fi not_active IP Right Cessation
- 1975-11-28 YU YU3012/75A patent/YU37370B/xx unknown
- 1975-11-28 NL NL7513942A patent/NL7513942A/xx not_active Application Discontinuation
- 1975-12-03 NO NO754077A patent/NO145344B/no unknown
- 1975-12-09 BE BE6045289A patent/BE836462R/xx not_active IP Right Cessation
- 1975-12-09 ES ES443318A patent/ES443318A1/es not_active Expired
- 1975-12-15 ZA ZA757822A patent/ZA757822B/xx unknown
-
1976
- 1976-01-05 AR AR261846A patent/AR221678A1/es active
- 1976-01-14 IT IT67078/76A patent/IT1055792B/it active
- 1976-02-05 CA CA245,088A patent/CA1080406A/en not_active Expired
- 1976-02-25 FR FR7605307A patent/FR2322235A1/fr active Granted
- 1976-02-27 SE SE7602842A patent/SE7602842L/ unknown
- 1976-04-22 GB GB16311/76A patent/GB1544216A/en not_active Expired
- 1976-05-13 BR BR7603006A patent/BR7603006A/pt unknown
- 1976-08-26 CH CH1084076A patent/CH620002A5/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2538673C2 (de) | 1986-01-16 |
| AR221678A1 (es) | 1981-03-13 |
| CA1080406A (en) | 1980-07-01 |
| CH620002A5 (en) | 1980-10-31 |
| NL7513942A (nl) | 1977-03-02 |
| GB1544216A (en) | 1979-04-19 |
| FR2322235B1 (enrdf_load_stackoverflow) | 1979-04-06 |
| BR7603006A (pt) | 1977-05-31 |
| BE836462R (fr) | 1976-06-09 |
| SE7602842L (sv) | 1977-03-01 |
| NO754077L (enrdf_load_stackoverflow) | 1977-03-01 |
| YU301275A (en) | 1983-04-27 |
| ES443318A1 (es) | 1977-05-01 |
| DE2538673A1 (de) | 1977-03-03 |
| FI753314A7 (enrdf_load_stackoverflow) | 1977-03-01 |
| ZA757822B (en) | 1976-11-24 |
| ATA861075A (de) | 1977-04-15 |
| AT340765B (de) | 1978-01-10 |
| FR2322235A1 (fr) | 1977-03-25 |
| IT1055792B (it) | 1982-01-11 |
| NO145344B (no) | 1981-11-23 |
| YU37370B (en) | 1984-08-31 |
| FI62869B (fi) | 1982-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: DEGUSSA AKTIENGESELLSCHAFT |