ZA868275B - Process for bleaching chemical paper pulp - Google Patents
Process for bleaching chemical paper pulpInfo
- Publication number
- ZA868275B ZA868275B ZA868275A ZA868275A ZA868275B ZA 868275 B ZA868275 B ZA 868275B ZA 868275 A ZA868275 A ZA 868275A ZA 868275 A ZA868275 A ZA 868275A ZA 868275 B ZA868275 B ZA 868275B
- Authority
- ZA
- South Africa
- Prior art keywords
- pulp
- alkaline extraction
- treatment
- paper pulp
- bleaching chemical
- Prior art date
Links
- 238000004061 bleaching Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 239000000126 substance Substances 0.000 title abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract 6
- 238000000605 extraction Methods 0.000 abstract 4
- 239000004155 Chlorine dioxide Substances 0.000 abstract 3
- 235000019398 chlorine dioxide Nutrition 0.000 abstract 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910001902 chlorine oxide Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 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
- D21C9/1026—Other features in bleaching processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8516332A FR2589494B1 (fr) | 1985-10-30 | 1985-10-30 | Procede de blanchiment de pates papetieres chimiques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA868275B true ZA868275B (en) | 1987-06-24 |
Family
ID=9324477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA868275A ZA868275B (en) | 1985-10-30 | 1986-10-30 | Process for bleaching chemical paper pulp |
Country Status (11)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4031597A1 (de) * | 1990-10-05 | 1992-04-09 | Sueddeutsche Kalkstickstoff | Verfahren zur chlorarmen bleiche und delignifizierung von zellstoff |
| US6569284B1 (en) * | 1996-09-24 | 2003-05-27 | International Paper Company | Elemental-chlorine-free bleaching process having an initial Eo or Eop stage |
| FR3062138B1 (fr) * | 2017-01-23 | 2019-06-07 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | Procede de blanchiment d'une pate a papier |
-
1985
- 1985-10-30 FR FR8516332A patent/FR2589494B1/fr not_active Expired
-
1986
- 1986-10-28 EP EP86420266A patent/EP0222674B1/fr not_active Expired
- 1986-10-28 DE DE198686420266T patent/DE222674T1/de active Pending
- 1986-10-28 AT AT86420266T patent/ATE48291T1/de not_active IP Right Cessation
- 1986-10-28 ES ES86420266T patent/ES2000019B3/es not_active Expired - Lifetime
- 1986-10-28 DE DE8686420266T patent/DE3667184D1/de not_active Revoked
- 1986-10-29 AU AU64492/86A patent/AU603556B2/en not_active Ceased
- 1986-10-29 NO NO864319A patent/NO864319L/no unknown
- 1986-10-29 PT PT83649A patent/PT83649B/pt not_active IP Right Cessation
- 1986-10-29 FI FI864411A patent/FI85294B/fi not_active Application Discontinuation
- 1986-10-30 ZA ZA868275A patent/ZA868275B/xx unknown
- 1986-10-30 JP JP61259562A patent/JPS62141188A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| PT83649B (pt) | 1989-05-31 |
| PT83649A (fr) | 1986-11-01 |
| JPS62141188A (ja) | 1987-06-24 |
| JPH0116958B2 (enrdf_load_stackoverflow) | 1989-03-28 |
| FR2589494A1 (fr) | 1987-05-07 |
| ES2000019A4 (es) | 1987-09-16 |
| AU6449286A (en) | 1987-05-07 |
| EP0222674B1 (fr) | 1989-11-29 |
| NO864319D0 (no) | 1986-10-29 |
| DE3667184D1 (de) | 1990-01-04 |
| EP0222674A1 (fr) | 1987-05-20 |
| NO864319L (no) | 1987-05-04 |
| FR2589494B1 (fr) | 1988-07-29 |
| FI864411A0 (fi) | 1986-10-29 |
| FI85294B (fi) | 1991-12-13 |
| DE222674T1 (de) | 1987-10-15 |
| ES2000019B3 (es) | 1990-03-16 |
| ATE48291T1 (de) | 1989-12-15 |
| AU603556B2 (en) | 1990-11-22 |
| FI864411L (fi) | 1987-05-01 |
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