ZA757822B - Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine - Google Patents
Bleaching process for wood pulp with the use of considerably reduced amounts of chlorineInfo
- Publication number
- ZA757822B ZA757822B ZA757822A ZA757822A ZA757822B ZA 757822 B ZA757822 B ZA 757822B ZA 757822 A ZA757822 A ZA 757822A ZA 757822 A ZA757822 A ZA 757822A ZA 757822 B ZA757822 B ZA 757822B
- Authority
- ZA
- South Africa
- Prior art keywords
- chlorine
- wood pulp
- considerably reduced
- bleaching process
- reduced amounts
- Prior art date
Links
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title 1
- 229920001131 Pulp (paper) Polymers 0.000 title 1
- 238000004061 bleaching Methods 0.000 title 1
- 229910052801 chlorine Inorganic materials 0.000 title 1
- 239000000460 chlorine Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2538673A DE2538673C2 (de) | 1975-08-30 | 1975-08-30 | Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA757822B true ZA757822B (en) | 1976-11-24 |
Family
ID=5955230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA757822A ZA757822B (en) | 1975-08-30 | 1975-12-15 | Bleaching process for wood pulp with the use of considerably reduced amounts of chlorine |
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 |
| FI62869C (fi) | 1983-03-10 |
| YU301275A (en) | 1983-04-27 |
| ES443318A1 (es) | 1977-05-01 |
| DE2538673A1 (de) | 1977-03-03 |
| FI753314A7 (enrdf_load_stackoverflow) | 1977-03-01 |
| 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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