FR2172646A5 - - Google Patents
Info
- Publication number
- FR2172646A5 FR2172646A5 FR7246398A FR7246398A FR2172646A5 FR 2172646 A5 FR2172646 A5 FR 2172646A5 FR 7246398 A FR7246398 A FR 7246398A FR 7246398 A FR7246398 A FR 7246398A FR 2172646 A5 FR2172646 A5 FR 2172646A5
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- D21C11/02—Regeneration of pulp liquors or effluent waste waters of acid, neutral or alkaline sulfite lye
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/025—Thermal hydrolysis
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22711572A | 1972-02-17 | 1972-02-17 | |
GB5557872A GB1407429A (en) | 1972-02-17 | 1972-12-01 | Process for treating spent sulphite pulping liquors |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2172646A5 true FR2172646A5 (da) | 1973-09-28 |
Family
ID=32964156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7246398A Expired FR2172646A5 (da) | 1972-02-17 | 1972-12-27 |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2172646A5 (da) |
GB (1) | GB1407429A (da) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4208245A (en) * | 1977-02-03 | 1980-06-17 | St. Regis Paper Company | Pyrolysis of spent pulping liquors |
-
1972
- 1972-12-01 GB GB5557872A patent/GB1407429A/en not_active Expired
- 1972-12-27 FR FR7246398A patent/FR2172646A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1407429A (en) | 1975-09-24 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |