NZ226649A - Process for bleaching mechanical pulp using hydrogen peroxide in two separate steps - Google Patents
Process for bleaching mechanical pulp using hydrogen peroxide in two separate stepsInfo
- Publication number
- NZ226649A NZ226649A NZ226649A NZ22664988A NZ226649A NZ 226649 A NZ226649 A NZ 226649A NZ 226649 A NZ226649 A NZ 226649A NZ 22664988 A NZ22664988 A NZ 22664988A NZ 226649 A NZ226649 A NZ 226649A
- Authority
- NZ
- New Zealand
- Prior art keywords
- hydrogen peroxide
- mechanical pulp
- separate steps
- bleaching mechanical
- bleaching
- Prior art date
Links
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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8714877A FR2622221A1 (en) | 1987-10-22 | 1987-10-22 | PROCESS FOR BLEACHING PASTA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ226649A true NZ226649A (en) | 1989-10-27 |
Family
ID=9356225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ226649A NZ226649A (en) | 1987-10-22 | 1988-10-20 | Process for bleaching mechanical pulp using hydrogen peroxide in two separate steps |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0313478A1 (en) |
| JP (1) | JPH0643674B2 (en) |
| AU (1) | AU615001B2 (en) |
| DE (1) | DE313478T1 (en) |
| ES (1) | ES2008654A4 (en) |
| FI (1) | FI884881A (en) |
| FR (1) | FR2622221A1 (en) |
| NO (1) | NO170348C (en) |
| NZ (1) | NZ226649A (en) |
| PT (1) | PT88819B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2661430B1 (en) * | 1990-04-30 | 1992-07-17 | Atochem | HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS. |
| US5118389A (en) * | 1990-07-06 | 1992-06-02 | Ici Canada Inc. | Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp |
| CA2063351C (en) * | 1992-03-18 | 1996-08-13 | Stanley Alan Heimburger | Process for bleaching hardwood pulp |
| US6605181B1 (en) * | 1993-10-01 | 2003-08-12 | Kvaerner Pulping Aktiebolag | Peroxide bleach sequence including an acidic bleach stage and including a wash stage |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5679798A (en) * | 1979-12-03 | 1981-06-30 | Mitsubishi Gas Chemical Co | Production of bleaching machine pulp |
| JPS5891884A (en) * | 1981-11-27 | 1983-05-31 | 工業技術院長 | Production of high whiteness unbleached pulp |
| SE451606B (en) * | 1982-09-14 | 1987-10-19 | Sca Development Ab | VIEW WHITENING OF HOG REPLACEMENT MASSES AVERAGE PEROXIDES |
| CA1249402A (en) * | 1984-12-21 | 1989-01-31 | Pulp And Paper Research Institute Of Canada | Multistage brightening of high yield and ultra high- yield wood pulps |
| DE3661641D1 (en) * | 1985-02-15 | 1989-02-09 | Kamyr Ab | Multi peroxide stage mechanical pulp bleaching |
| FR2582692B1 (en) * | 1985-05-29 | 1987-12-11 | Atochem | TREATMENT OF CHEMICAL PAPER PULP WITH HYDROGEN PEROXIDE FOR BLEACHING |
| FR2593527B1 (en) * | 1986-01-30 | 1988-03-25 | Centre Tech Ind Papier | PROCESS FOR BLEACHING MECHANICAL PASTA. |
-
1987
- 1987-10-22 FR FR8714877A patent/FR2622221A1/en not_active Withdrawn
-
1988
- 1988-10-06 DE DE198888420339T patent/DE313478T1/en active Pending
- 1988-10-06 EP EP19880420339 patent/EP0313478A1/en not_active Withdrawn
- 1988-10-06 ES ES88420339T patent/ES2008654A4/en active Pending
- 1988-10-20 JP JP63265221A patent/JPH0643674B2/en not_active Expired - Lifetime
- 1988-10-20 NO NO884674A patent/NO170348C/en unknown
- 1988-10-20 NZ NZ226649A patent/NZ226649A/en unknown
- 1988-10-21 PT PT88819A patent/PT88819B/en active IP Right Grant
- 1988-10-21 AU AU24130/88A patent/AU615001B2/en not_active Ceased
- 1988-10-21 FI FI884881A patent/FI884881A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO884674D0 (en) | 1988-10-20 |
| EP0313478A1 (en) | 1989-04-26 |
| NO884674L (en) | 1989-04-24 |
| JPH0643674B2 (en) | 1994-06-08 |
| AU2413088A (en) | 1989-04-27 |
| FR2622221A1 (en) | 1989-04-28 |
| FI884881A0 (en) | 1988-10-21 |
| DE313478T1 (en) | 1989-10-05 |
| NO170348B (en) | 1992-06-29 |
| AU615001B2 (en) | 1991-09-19 |
| PT88819B (en) | 1993-01-29 |
| NO170348C (en) | 1992-10-07 |
| JPH01124696A (en) | 1989-05-17 |
| ES2008654A4 (en) | 1989-08-01 |
| FI884881A (en) | 1989-04-23 |
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