NZ224749A - Preparation of chemico-thermomechanical pulps - Google Patents
Preparation of chemico-thermomechanical pulpsInfo
- Publication number
- NZ224749A NZ224749A NZ224749A NZ22474988A NZ224749A NZ 224749 A NZ224749 A NZ 224749A NZ 224749 A NZ224749 A NZ 224749A NZ 22474988 A NZ22474988 A NZ 22474988A NZ 224749 A NZ224749 A NZ 224749A
- Authority
- NZ
- New Zealand
- Prior art keywords
- chemico
- preparation
- aid
- thermomechanical pulps
- medium
- 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
- D21C3/222—Use of compounds accelerating the pulping processes
Landscapes
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Catalysts (AREA)
- Steroid Compounds (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Process for the manufacture of CTMP pulps, in which a mechanical grinding of the lignocellulosic material is added to a cooking of the said material at a temperature equal to or higher than 100 DEG C, under saturated steam pressure, with the aid of Na2SO3 or NaHSO3 or SO2NaOH and of a reducing agent more electronegative than the SO3<=> ion, used together and in a medium of initial pH between 7 and 12.5, and bleaching of the manufactured pulp with the aid of H2O2 in an alkaline aqueous medium.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8707552A FR2615874B1 (en) | 1987-05-25 | 1987-05-25 | PROCESS FOR THE PREPARATION OF CHEMICOTHERMOMECHANICAL PASTES |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ224749A true NZ224749A (en) | 1989-08-29 |
Family
ID=9351559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ224749A NZ224749A (en) | 1987-05-25 | 1988-05-23 | Preparation of chemico-thermomechanical pulps |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0293309B1 (en) |
JP (1) | JPS63303189A (en) |
AT (1) | ATE61639T1 (en) |
AU (1) | AU609481B2 (en) |
CA (1) | CA1310452C (en) |
DE (2) | DE3861982D1 (en) |
ES (1) | ES2004855B3 (en) |
FI (1) | FI93746C (en) |
FR (1) | FR2615874B1 (en) |
NO (1) | NO171801C (en) |
NZ (1) | NZ224749A (en) |
PT (1) | PT87569B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2634233B1 (en) * | 1988-07-12 | 1995-04-14 | Atochem | PROCESS FOR PRODUCING BLANCHED CHEMICOTHERMOMECHANICAL PASTES |
FR2659363B1 (en) * | 1990-03-07 | 1996-04-19 | Atochem | PROCESS FOR THE PREPARATION OF HIGHLY YIELDED PASTA. |
SE468644B (en) * | 1991-05-24 | 1993-02-22 | Sunds Defibrator Ind Ab | PREPARATION OF CHEMISTRY MECHANICAL MASS AND IMPROVEMENT SOLUTION CONTAINING BORHYDRIDE AND SULPHITE |
DE10109502A1 (en) * | 2001-02-28 | 2002-09-12 | Rhodia Acetow Gmbh | Removal of hemicellulose from biomaterial, especially wood pulp, involves extraction by treatment with an aqueous solution of metal complex, e.g. nickel tris-2-aminoethyl-amine di-hydroxide |
CN104838065A (en) * | 2012-12-12 | 2015-08-12 | 巴斯夫欧洲公司 | Use of sodium dithionite in cellulose pulping process |
EP2924166A1 (en) * | 2014-03-25 | 2015-09-30 | Basf Se | Method for the manufacture of bleached wood fibre |
CN111549552B (en) * | 2020-05-25 | 2022-06-14 | 广西大学 | High-yield chemi-mechanical pulp making method for recycling alkali in waste water |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1150451A (en) * | 1956-05-04 | 1958-01-14 | Saint Gobain | Improvement in the manufacturing processes of semi-chemical cellulose pulps |
US3284283A (en) * | 1964-02-17 | 1966-11-08 | Fmc Corp | Production of wood pulps including treatment of cellulosic fibers with bisulfite ion followed by alkali metal borohydride |
CH510168A (en) * | 1969-07-30 | 1971-07-15 | Vita Mayer & C Gia | Process for the production of high yield and high degree of whiteness pastes for paper use |
JPS5210300B2 (en) * | 1973-06-19 | 1977-03-23 | ||
SE416481B (en) * | 1977-05-02 | 1981-01-05 | Mo Och Domsjoe Ab | METHOD AND DEVICE FOR TREATMENT OF WOOD TIP FOR REMOVAL OF HEAVY METALS AND RESIN |
CA1212505A (en) * | 1984-07-17 | 1986-10-14 | Rudy Vit | Method, process and apparatus for converting wood, wood residue and or biomass into pulp |
FR2634233B1 (en) * | 1988-07-12 | 1995-04-14 | Atochem | PROCESS FOR PRODUCING BLANCHED CHEMICOTHERMOMECHANICAL PASTES |
-
1987
- 1987-05-25 FR FR8707552A patent/FR2615874B1/en not_active Expired - Lifetime
-
1988
- 1988-05-17 AT AT88420160T patent/ATE61639T1/en not_active IP Right Cessation
- 1988-05-17 DE DE8888420160T patent/DE3861982D1/en not_active Expired - Fee Related
- 1988-05-17 ES ES88420160T patent/ES2004855B3/en not_active Expired - Lifetime
- 1988-05-17 EP EP88420160A patent/EP0293309B1/en not_active Expired - Lifetime
- 1988-05-17 DE DE198888420160T patent/DE293309T1/en active Pending
- 1988-05-23 NZ NZ224749A patent/NZ224749A/en unknown
- 1988-05-24 NO NO882263A patent/NO171801C/en not_active IP Right Cessation
- 1988-05-24 CA CA000567547A patent/CA1310452C/en not_active Expired - Lifetime
- 1988-05-24 PT PT87569A patent/PT87569B/en not_active IP Right Cessation
- 1988-05-24 FI FI882448A patent/FI93746C/en not_active IP Right Cessation
- 1988-05-25 JP JP63128124A patent/JPS63303189A/en active Granted
- 1988-05-25 AU AU16614/88A patent/AU609481B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
CA1310452C (en) | 1992-11-24 |
ATE61639T1 (en) | 1991-03-15 |
DE3861982D1 (en) | 1991-04-18 |
ES2004855A4 (en) | 1989-02-16 |
FR2615874B1 (en) | 1992-02-21 |
FI93746C (en) | 1995-05-26 |
PT87569A (en) | 1989-05-31 |
JPS63303189A (en) | 1988-12-09 |
FI882448A (en) | 1988-11-26 |
ES2004855B3 (en) | 1991-08-16 |
AU609481B2 (en) | 1991-05-02 |
EP0293309A1 (en) | 1988-11-30 |
DE293309T1 (en) | 1989-05-11 |
NO171801C (en) | 1993-05-05 |
FI93746B (en) | 1995-02-15 |
NO882263D0 (en) | 1988-05-24 |
NO882263L (en) | 1988-11-28 |
JPH0217675B2 (en) | 1990-04-23 |
AU1661488A (en) | 1988-12-01 |
FI882448A0 (en) | 1988-05-24 |
NO171801B (en) | 1993-01-25 |
EP0293309B1 (en) | 1991-03-13 |
PT87569B (en) | 1992-09-30 |
FR2615874A1 (en) | 1988-12-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0284585A3 (en) | Improved process for preparing pulp for paper making | |
AU533905B2 (en) | Process for reclaiming waste paper | |
AU609481B2 (en) | Process for the preparation of chemico-thermomechanical pulps | |
ES8400520A1 (en) | Treatment of papermaking chemical pulp | |
AU1406788A (en) | Pulp bleaching process | |
CA2066316A1 (en) | Process for making bleached high yield paper pulp | |
AU3799989A (en) | Process for the manufacture of bleached chemithermomechanical pulps | |
ES2005026A6 (en) | A method for the manufacture of products containing fibers of lignocellulosic material. | |
AU7266891A (en) | Process for the preparation of bleached high-yield pulps | |
SE8700313L (en) | PROCEDURE FOR WHEATING OF MECHANICAL MASSES | |
ES8503757A1 (en) | Thermo-mechanical digestion using bleaching agent | |
FR2426769A2 (en) | Paper pulp mfr. by mechanical-chemical treatment of cellulose - with intermediate treatment by oxidising agent e.g. sodium hypochlorite |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RENW | Renewal (renewal fees accepted) |