NZ217002A - Delignification using acid and hydrogen peroxide - Google Patents
Delignification using acid and hydrogen peroxideInfo
- Publication number
- NZ217002A NZ217002A NZ217002A NZ21700286A NZ217002A NZ 217002 A NZ217002 A NZ 217002A NZ 217002 A NZ217002 A NZ 217002A NZ 21700286 A NZ21700286 A NZ 21700286A NZ 217002 A NZ217002 A NZ 217002A
- Authority
- NZ
- New Zealand
- Prior art keywords
- cellulosic materials
- delignification
- acid
- hydrogen peroxide
- treated
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
Abstract
1. Process for the delignification of cellulosic materials characterized in that in a first step the cellulosic materials are treated with an acid under regulated conditions to effect a decontamination of the cellulosic materials of the metals which they contain, in a second step the cellulosic materials of the first step are treated with hydrogen peroxyde under alcaline conditions and in a third step the cellulosic materials of the second step are boiled in the presence of soda.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76272685A | 1985-08-05 | 1985-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ217002A true NZ217002A (en) | 1988-11-29 |
Family
ID=25065883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ217002A NZ217002A (en) | 1985-08-05 | 1986-07-28 | Delignification using acid and hydrogen peroxide |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0212329B1 (en) |
| JP (1) | JPH0742670B2 (en) |
| AT (1) | ATE57400T1 (en) |
| AU (1) | AU591509B2 (en) |
| BR (1) | BR8603672A (en) |
| CA (1) | CA1311093C (en) |
| DE (1) | DE3674859D1 (en) |
| ES (1) | ES2000385A6 (en) |
| FI (1) | FI85726C (en) |
| NO (1) | NO168490C (en) |
| NZ (1) | NZ217002A (en) |
| PT (1) | PT83118B (en) |
| YU (1) | YU45351B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN167959B (en) * | 1985-08-05 | 1991-01-12 | Interox |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1474276A (en) * | 1965-03-19 | 1967-03-24 | Electro Chimie Soc D | Improvements in the manufacture of pulp |
| SE373896B (en) * | 1972-07-05 | 1975-02-17 | Mo Och Domsjoe Ab | |
| SE380298B (en) * | 1974-03-14 | 1975-11-03 | Mo | PROCEDURE FOR DELIGNIFICATION BY ACID-ALKALI TREATMENT OF LIGNOCELLUOSA-CONTAINING MATERIAL |
| SE7612248L (en) * | 1976-11-03 | 1978-05-04 | Mo Och Domsjoe Ab | BOILING OF LIGNOCELLULOSE-MATERIALS |
| SU821614A1 (en) * | 1979-06-19 | 1981-04-15 | Белорусский Технологический Институт Им.C.M.Кирова | Method of obtaining pulp-containing semiproduct |
| IN167959B (en) * | 1985-08-05 | 1991-01-12 | Interox |
-
1986
- 1986-07-25 EP EP86110248A patent/EP0212329B1/en not_active Expired - Lifetime
- 1986-07-25 DE DE8686110248T patent/DE3674859D1/en not_active Expired - Fee Related
- 1986-07-25 AU AU60544/86A patent/AU591509B2/en not_active Ceased
- 1986-07-25 AT AT86110248T patent/ATE57400T1/en not_active IP Right Cessation
- 1986-07-28 NZ NZ217002A patent/NZ217002A/en unknown
- 1986-07-31 YU YU1369/86A patent/YU45351B/en unknown
- 1986-08-01 CA CA000515193A patent/CA1311093C/en not_active Expired - Lifetime
- 1986-08-01 PT PT83118A patent/PT83118B/en not_active IP Right Cessation
- 1986-08-04 BR BR8603672A patent/BR8603672A/en not_active IP Right Cessation
- 1986-08-04 ES ES8600840A patent/ES2000385A6/en not_active Expired
- 1986-08-04 JP JP61183262A patent/JPH0742670B2/en not_active Expired - Lifetime
- 1986-08-04 NO NO863133A patent/NO168490C/en not_active IP Right Cessation
- 1986-08-05 FI FI863194A patent/FI85726C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0212329A1 (en) | 1987-03-04 |
| NO863133D0 (en) | 1986-08-04 |
| DE3674859D1 (en) | 1990-11-15 |
| PT83118A (en) | 1986-09-01 |
| YU45351B (en) | 1992-05-28 |
| AU591509B2 (en) | 1989-12-07 |
| BR8603672A (en) | 1987-03-10 |
| NO168490B (en) | 1991-11-18 |
| FI863194A (en) | 1987-02-06 |
| NO863133L (en) | 1987-02-06 |
| ES2000385A6 (en) | 1988-02-16 |
| CA1311093C (en) | 1992-12-08 |
| JPS6297992A (en) | 1987-05-07 |
| EP0212329B1 (en) | 1990-10-10 |
| ATE57400T1 (en) | 1990-10-15 |
| FI85726C (en) | 1992-05-25 |
| FI85726B (en) | 1992-02-14 |
| NO168490C (en) | 1992-02-26 |
| AU6054486A (en) | 1987-02-12 |
| JPH0742670B2 (en) | 1995-05-10 |
| PT83118B (en) | 1988-10-14 |
| FI863194A0 (en) | 1986-08-05 |
| YU136986A (en) | 1987-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ZA876920B (en) | Process for the bleaching of cellulosic pulps using hydrogen peroxide | |
| GB2227759B (en) | Hydrogen peroxide bleaching process | |
| EP0383999A3 (en) | Procedure for the bleaching of pulp | |
| GB8904014D0 (en) | A process for bleaching textile material | |
| NZ217002A (en) | Delignification using acid and hydrogen peroxide | |
| NZ217001A (en) | Delignification using acid and hydrogen peroxide | |
| DE3461941D1 (en) | Hypochlorite treatment of chemical paper pulps | |
| GB2170350B (en) | Pulsed plasma | |
| DE3563548D1 (en) | Process for preparing chemical wood pulps with a view to bleaching | |
| MY103876A (en) | Improved alkaline peroxide treatment of nonwoody lignocellulosic substrates |