SE390549C - SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT - Google Patents
SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENTInfo
- Publication number
- SE390549C SE390549C SE7317221A SE7317221A SE390549C SE 390549 C SE390549 C SE 390549C SE 7317221 A SE7317221 A SE 7317221A SE 7317221 A SE7317221 A SE 7317221A SE 390549 C SE390549 C SE 390549C
- Authority
- SE
- Sweden
- Prior art keywords
- blow
- containing gas
- cellulosic material
- acid
- free acid
- Prior art date
Links
- 239000002253 acid Substances 0.000 title 2
- 239000000463 material Substances 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- 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
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Conductive Materials (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7317221A SE390549C (en) | 1973-12-20 | 1973-12-20 | SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT |
CA215,743A CA1065105A (en) | 1973-12-20 | 1974-12-11 | Method for bleaching of material containing cellulose |
ZA00747918A ZA747918B (en) | 1973-12-20 | 1974-12-12 | Method for bleaching of material containing cellulose |
GB5403874A GB1452710A (en) | 1973-12-20 | 1974-12-13 | Method for bleaching of material containing cellulose |
NO744609A NO142128C (en) | 1973-12-20 | 1974-12-19 | PROCEDURES FOR BLACKING CELLULOSE-CONTAINING MATERIAL |
SU742090807A SU850019A3 (en) | 1973-12-20 | 1974-12-19 | Method of cellulose bleaching |
BR10652/74A BR7410652D0 (en) | 1973-12-20 | 1974-12-19 | MACHINING PROCESS FOR MATERIAL CONTAINING CELLULOSE |
FI743702A FI52878C (en) | 1973-12-20 | 1974-12-19 | FOERFARANDE FOER BLEKNING AV CELLULOSAHALTIGT MATERIAL. |
DE19742460144 DE2460144B2 (en) | 1973-12-20 | 1974-12-19 | PROCESS FOR BLEACHING PULP-CONTAINING MATERIAL |
JP49146650A JPS524643B2 (en) | 1973-12-20 | 1974-12-19 | |
IT70687/74A IT1027773B (en) | 1973-12-20 | 1974-12-19 | PROCEDURE FOR THE WHITENING OF MATERIALS CONTAINING CELLULOSE |
FR7442400A FR2255419B1 (en) | 1973-12-20 | 1974-12-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7317221A SE390549C (en) | 1973-12-20 | 1973-12-20 | SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT |
Publications (3)
Publication Number | Publication Date |
---|---|
SE7317221L SE7317221L (en) | 1975-06-23 |
SE390549B SE390549B (en) | 1976-12-27 |
SE390549C true SE390549C (en) | 1986-04-14 |
Family
ID=20319462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7317221A SE390549C (en) | 1973-12-20 | 1973-12-20 | SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT |
Country Status (12)
Country | Link |
---|---|
JP (1) | JPS524643B2 (en) |
BR (1) | BR7410652D0 (en) |
CA (1) | CA1065105A (en) |
DE (1) | DE2460144B2 (en) |
FI (1) | FI52878C (en) |
FR (1) | FR2255419B1 (en) |
GB (1) | GB1452710A (en) |
IT (1) | IT1027773B (en) |
NO (1) | NO142128C (en) |
SE (1) | SE390549C (en) |
SU (1) | SU850019A3 (en) |
ZA (1) | ZA747918B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS563214Y2 (en) * | 1978-05-15 | 1981-01-24 | ||
US4209359A (en) * | 1978-10-23 | 1980-06-24 | International Paper Company | Process for removing residual oxygen from oxygen-bleached pulp |
SE462919B (en) * | 1979-05-11 | 1990-09-17 | Sunds Defibrator Ind Ab | PROCEDURE TO PERFORM ALKALIE EXTRACTION OF CELLULOSAMASS IN THE PRESENCE OF ACID |
US4574032A (en) * | 1979-10-15 | 1986-03-04 | Westvaco Corporation | Process for delignification of lignocellulosic material in the presence of anthraquinone in solution with white and black liquors |
SE452896B (en) * | 1985-01-24 | 1987-12-21 | Aga Ab | METHOD OF TREATING CELLULOSAMASSOR |
SE460202B (en) * | 1987-03-13 | 1989-09-18 | Aga Ab | SEATED AS TREATMENT OF A MATERIAL WITH A GAS IN A SCIENCE |
FI89516B (en) * | 1989-05-10 | 1993-06-30 | Ahlstroem Oy | Foerfarande Foer blekning av cellulosamassa med Otson |
US5460696A (en) * | 1993-08-12 | 1995-10-24 | The Boc Group, Inc. | Oxygen delignification method incorporating wood pulp mixing apparatus |
-
1973
- 1973-12-20 SE SE7317221A patent/SE390549C/en unknown
-
1974
- 1974-12-11 CA CA215,743A patent/CA1065105A/en not_active Expired
- 1974-12-12 ZA ZA00747918A patent/ZA747918B/en unknown
- 1974-12-13 GB GB5403874A patent/GB1452710A/en not_active Expired
- 1974-12-19 SU SU742090807A patent/SU850019A3/en active
- 1974-12-19 BR BR10652/74A patent/BR7410652D0/en unknown
- 1974-12-19 FI FI743702A patent/FI52878C/en active
- 1974-12-19 NO NO744609A patent/NO142128C/en unknown
- 1974-12-19 DE DE19742460144 patent/DE2460144B2/en not_active Ceased
- 1974-12-19 IT IT70687/74A patent/IT1027773B/en active
- 1974-12-19 JP JP49146650A patent/JPS524643B2/ja not_active Expired
- 1974-12-20 FR FR7442400A patent/FR2255419B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NO744609L (en) | 1975-07-14 |
IT1027773B (en) | 1978-12-20 |
NO142128C (en) | 1980-07-02 |
SE390549B (en) | 1976-12-27 |
CA1065105A (en) | 1979-10-30 |
GB1452710A (en) | 1976-10-13 |
DE2460144B2 (en) | 1977-03-03 |
SU850019A3 (en) | 1981-07-23 |
FI370274A (en) | 1975-06-21 |
JPS5094202A (en) | 1975-07-26 |
SE7317221L (en) | 1975-06-23 |
FR2255419A1 (en) | 1975-07-18 |
NO142128B (en) | 1980-03-24 |
BR7410652D0 (en) | 1975-09-02 |
FR2255419B1 (en) | 1979-06-01 |
FI52878B (en) | 1977-08-31 |
FI52878C (en) | 1987-09-24 |
ZA747918B (en) | 1975-12-31 |
JPS524643B2 (en) | 1977-02-05 |
DE2460144A1 (en) | 1975-07-03 |
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