AT303509B - Process for the production of wood pulp - Google Patents
Process for the production of wood pulpInfo
- Publication number
- AT303509B AT303509B AT542871A AT542871A AT303509B AT 303509 B AT303509 B AT 303509B AT 542871 A AT542871 A AT 542871A AT 542871 A AT542871 A AT 542871A AT 303509 B AT303509 B AT 303509B
- Authority
- AT
- Austria
- Prior art keywords
- production
- wood pulp
- pulp
- wood
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8589/70A SE343092B (en) | 1970-06-22 | 1970-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT303509B true AT303509B (en) | 1972-11-27 |
Family
ID=20274493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT542871A AT303509B (en) | 1970-06-22 | 1971-06-22 | Process for the production of wood pulp |
Country Status (10)
Country | Link |
---|---|
US (1) | US3764464A (en) |
JP (1) | JPS4938921B1 (en) |
AT (1) | AT303509B (en) |
CA (1) | CA935958A (en) |
DE (1) | DE2130164B2 (en) |
FI (1) | FI54345C (en) |
FR (1) | FR2099805A5 (en) |
NO (1) | NO131734C (en) |
SE (1) | SE343092B (en) |
ZA (1) | ZA714055B (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE373896B (en) * | 1972-07-05 | 1975-02-17 | Mo Och Domsjoe Ab | |
SE373395B (en) * | 1972-12-19 | 1975-02-03 | Mo Och Domsjoe Ab | PROCEDURE FOR THE PRODUCTION OF CELLULOSA MASS WITH HIGH LIGHTNESS BY DISTRIBUTING WOOD WITH ACID GAS UNDER PRESSURE IN THE PRESENCE OF A COCK |
SE381692B (en) * | 1973-10-17 | 1975-12-15 | Mo Och Domsjoe Ab | PROCEDURE FOR IMPROVING HEATING ECONOMY WHEN COOKING LIGNOCELLULOSE MATERIAL IN DISCONTINUAL BOILERS |
US4089737A (en) * | 1974-02-18 | 1978-05-16 | Toyo Pulp Company, Ltd. | Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein |
SE393138B (en) * | 1974-03-14 | 1977-05-02 | Mo Och Domsjoe Ab | PROCEDURE FOR BLEACHING CELLULOSA WITH AN ACID CONTAINING GAS IN THE PRESENCE OF SODIUM BICARBONATE |
GB1505529A (en) * | 1974-06-14 | 1978-03-30 | Mo Och Domsjoe Ab | Method for the oxygen-gas delignification of lignocellulosic material and apparatus for carrying out the method |
US4338158A (en) * | 1976-04-09 | 1982-07-06 | Weyerhaeuser Company | Pulping in the presence of a protector |
US4080248A (en) * | 1976-06-28 | 1978-03-21 | Crown Zellerbach Corporation | Two-stage oxygen pulping |
US4172006A (en) * | 1976-08-26 | 1979-10-23 | Weyerhaeuser Company | Method of delignifying wood chips with oxygen by adding cooking liquor under pressure |
JPS5383012A (en) * | 1976-12-28 | 1978-07-22 | Fujitec Kk | Device for controlling induction motor |
US4664832A (en) * | 1984-09-28 | 1987-05-12 | State Of South Dakota As Represented By The Department Of Transportation | Deicing chemicals and their preparation from polysaccharide sources |
US6126781A (en) * | 1991-08-01 | 2000-10-03 | Union Camp Patent Holding, Inc. | Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
CA2107764A1 (en) * | 1992-03-02 | 1993-09-16 | Lawrence A. Hinkey | Combined ozone destruction and fiber scrubbing in paper pulp mills |
US5571378A (en) * | 1993-11-23 | 1996-11-05 | Hampshire Chemical Ltd. | Process for high-pH metal ion chelation in pulps |
US6210527B1 (en) * | 1994-03-14 | 2001-04-03 | The Boc Group, Inc. | Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream |
SE516030C2 (en) * | 1994-11-14 | 2001-11-12 | Aga Ab | Regeneration of a gas mixture from an ozone bleaching stage |
US6475338B1 (en) * | 1996-06-05 | 2002-11-05 | Andritz Inc. | Method of minimizing transition metal ions during chemical pulping in a digester by adding chelating agent to the digester |
PT1337315E (en) * | 2000-12-01 | 2005-02-28 | Linde Ag | METHOD FOR THE EXHAUST GAS DEPURATION OF A CELLULOSE PULP FACTORY |
FI122815B (en) * | 2005-04-18 | 2012-07-13 | Cerefi Oy | Method for fractionating lignocellulosic materials and parts obtained from them |
-
1970
- 1970-06-22 SE SE8589/70A patent/SE343092B/xx unknown
-
1971
- 1971-06-18 US US00154486A patent/US3764464A/en not_active Expired - Lifetime
- 1971-06-18 FI FI1740/71A patent/FI54345C/en active
- 1971-06-18 DE DE19712130164 patent/DE2130164B2/en active Granted
- 1971-06-18 NO NO2305/71A patent/NO131734C/no unknown
- 1971-06-21 CA CA116186A patent/CA935958A/en not_active Expired
- 1971-06-21 ZA ZA714055A patent/ZA714055B/en unknown
- 1971-06-22 JP JP46044554A patent/JPS4938921B1/ja active Pending
- 1971-06-22 FR FR7122712A patent/FR2099805A5/fr not_active Expired
- 1971-06-22 AT AT542871A patent/AT303509B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI54345C (en) | 1978-11-10 |
NO131734B (en) | 1975-04-07 |
US3764464A (en) | 1973-10-09 |
DE2130164B2 (en) | 1973-08-23 |
CA935958A (en) | 1973-10-30 |
DE2130164C3 (en) | 1974-04-11 |
FI54345B (en) | 1978-07-31 |
ZA714055B (en) | 1973-02-28 |
DE2130164A1 (en) | 1971-12-30 |
NO131734C (en) | 1975-07-16 |
JPS4938921B1 (en) | 1974-10-22 |
SE343092B (en) | 1972-02-28 |
FR2099805A5 (en) | 1972-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |