FI752227A - - Google Patents
Info
- Publication number
- FI752227A FI752227A FI752227A FI752227A FI752227A FI 752227 A FI752227 A FI 752227A FI 752227 A FI752227 A FI 752227A FI 752227 A FI752227 A FI 752227A FI 752227 A FI752227 A FI 752227A
- Authority
- FI
- Finland
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
- D21C11/12—Combustion of pulp liquors
- D21C11/122—Treatment, e.g. dissolution, of the smelt
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/08—Chlorine-containing liquid regeneration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/03—Papermaking liquor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/494,897 US3945880A (en) | 1974-08-05 | 1974-08-05 | Sodium chloride removal in pulp mill systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FI752227A true FI752227A (US07494231-20090224-C00006.png) | 1976-02-06 |
Family
ID=23966412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI752227A FI752227A (US07494231-20090224-C00006.png) | 1974-08-05 | 1975-08-05 |
Country Status (6)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1058358A (en) * | 1973-08-07 | 1979-07-17 | Erco Envirotech Ltd. | Removal of dissolved salts from sulphide liquors |
| FI53728C (fi) * | 1974-03-12 | 1978-07-10 | Ahlstroem Oy | Foerfarande foer aotervinning av kemikalier ur avlutar fraon sulfatcellulosakok och avfallsvatten fraon blekning |
| ZA761255B (en) * | 1975-03-11 | 1977-03-30 | Erco Envirotech Ltd | Bleachplant operation |
| US5567293A (en) * | 1994-12-22 | 1996-10-22 | Pulp And Paper Research Institute Of Canada | Electromembrane processes for the treatment of kraft mill electrostatic precipitator catch |
| FI98225C (fi) * | 1995-02-16 | 1997-05-12 | Ahlstrom Machinery Oy | Menetelmä haitallisten epäpuhtauksien poistamiseksi selluloosapitoisen materiaalin alkalisen delignifioinnin yhteydessä |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1712787A (en) * | 1924-02-06 | 1929-05-14 | American Potash & Chem Corp | Concentration of brines |
| US1791281A (en) * | 1929-04-29 | 1931-02-03 | Morse Harry Wheeler | Production of sodium-carbonate liquor |
| US1836426A (en) * | 1930-02-01 | 1931-12-15 | American Potash & Chem Corp | Process of separating sodium salts from mixtures thereof |
| US2159935A (en) * | 1936-08-25 | 1939-05-23 | Stackpole Carbon Co | Brake lining |
| US2642399A (en) * | 1949-02-23 | 1953-06-16 | Robert S Aries | Process for dissolving ash containing sodium sulfide and sodium carbonate |
| US2862887A (en) * | 1955-10-03 | 1958-12-02 | Western Preciptation Corp | Process for production and separation of sodium sulfide and sodium carbonate from spent liquors |
| GB1217833A (en) * | 1967-01-16 | 1970-12-31 | Electric Reduction Co | Improved cellulosic pulp process |
| US3560329A (en) * | 1968-12-27 | 1971-02-02 | Combustion Eng | Process for low sulfide chemical recovery |
| US3746612A (en) * | 1969-12-30 | 1973-07-17 | Erco Envirotech Ltd | Removal of sodium chloride from white pulping liquor |
| SE362453C (sv) * | 1971-02-05 | 1976-03-08 | Mo Och Domsjoe Ab | Sett att forhindra utslepp av klorhaltiga fororeningar vid natriumbaserade cellulosafabriker |
| CA947010A (en) * | 1971-02-23 | 1974-05-14 | Erco Envirotech Ltd. | Chlorination of alkali metal carbonates recovered from the production of pulp |
| JPS5510716B2 (US07494231-20090224-C00006.png) * | 1971-11-02 | 1980-03-18 | ||
| CA1058358A (en) * | 1973-08-07 | 1979-07-17 | Erco Envirotech Ltd. | Removal of dissolved salts from sulphide liquors |
| US3909344A (en) * | 1973-12-03 | 1975-09-30 | Erco Envirotech Ltd | Removal of sodium chloride from pulp mill operations |
-
1974
- 1974-08-05 US US05/494,897 patent/US3945880A/en not_active Expired - Lifetime
-
1975
- 1975-08-01 CA CA232,764A patent/CA1061512A/en not_active Expired
- 1975-08-04 SE SE7508795A patent/SE403500B/xx unknown
- 1975-08-05 FR FR7524479A patent/FR2281458A1/fr active Granted
- 1975-08-05 JP JP50095349A patent/JPS5149904A/ja active Pending
- 1975-08-05 FI FI752227A patent/FI752227A/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE403500B (sv) | 1978-08-21 |
| FR2281458A1 (fr) | 1976-03-05 |
| US3945880A (en) | 1976-03-23 |
| CA1061512A (en) | 1979-09-04 |
| AU8384875A (en) | 1977-02-17 |
| FR2281458B1 (US07494231-20090224-C00006.png) | 1978-09-01 |
| SE7508795L (sv) | 1976-02-06 |
| JPS5149904A (US07494231-20090224-C00006.png) | 1976-04-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD | Application lapsed |
Owner name: ERCO ENVIROTECH LIMITED |