BE517582A - - Google Patents
Info
- Publication number
- BE517582A BE517582A BE517582DA BE517582A BE 517582 A BE517582 A BE 517582A BE 517582D A BE517582D A BE 517582DA BE 517582 A BE517582 A BE 517582A
- Authority
- BE
- Belgium
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
- D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle
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- 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
- Y10S210/00—Liquid purification or separation
- Y10S210/928—Paper mill waste, e.g. white water, black liquor treated
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- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US272719A US2750290A (en) | 1952-02-21 | 1952-02-21 | Recovery of cooking liquor from spent semi-chemical pulping liquors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE517582A true BE517582A (da) |
Family
ID=23040975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE517582D BE517582A (da) | 1952-02-21 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2750290A (da) |
| BE (1) | BE517582A (da) |
| DE (1) | DE1003031B (da) |
| GB (1) | GB742598A (da) |
| NL (1) | NL96180C (da) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2802791A (en) * | 1953-09-28 | 1957-08-13 | Paper Chemistry Inst | Treatment of spent sulfite liquor |
| US3298781A (en) * | 1962-02-09 | 1967-01-17 | Mitsubishi Shipbuilding & Eng | Production of sulfites from red mud |
| US3873415A (en) * | 1973-05-03 | 1975-03-25 | Spring Chemicals Ltd | Process for reducing the amount of calcium contained in sodium-base waste sulfite liquor by the use of a sodium and/or an ammonium compound and additional calcium |
| US3962080A (en) * | 1973-10-31 | 1976-06-08 | Industrial Resources, Inc. | Sodium sulfur oxides wastes disposal process |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2598311A (en) * | 1952-05-27 | Manufacture of vanillin | ||
| NL36519C (da) * | 1926-04-21 | 1900-01-01 | ||
| FR642270A (fr) * | 1927-01-21 | 1928-08-25 | Barbou Et Cie Soc | Procédé pour la récupération, par voie chimique, des éléments actifs des lessives résiduaires après cuisson des matières cellulosiques |
| US1815328A (en) * | 1927-11-23 | 1931-07-21 | Brown Co | Process of recovering and utilizing the valuable compounds in spent cooking liquors |
| US1983789A (en) * | 1928-01-23 | 1934-12-11 | Bradley Mckeefe Corp | Production of pulp and treatment of residual liquors, etc. |
| US2029616A (en) * | 1931-01-16 | 1936-02-04 | Patentaktiebolaget Grondal Ram | Process for preparing alkali sulphite or alkali bisulphite solutions from waste liquors obtained in the digestion of cellulose with alkali sulphur compounds |
| US2010077A (en) * | 1932-04-29 | 1935-08-06 | Patentaktiebolaget Grondal Ram | Production of solutions of alkali metal salts of sulphurous acid |
| US2354553A (en) * | 1940-01-10 | 1944-07-25 | Daniel L Sherk | Method of recovering constituents of waste sulphite liquor |
| US2470764A (en) * | 1943-09-23 | 1949-05-24 | Dunbar Thomas Leonidas | Method of treating waste sulfite liquor |
| US2516827A (en) * | 1945-07-09 | 1950-07-25 | Ontario Paper Co Ltd | Method of producing vanillin |
| US2482594A (en) * | 1946-04-01 | 1949-09-20 | Paper Chemistry Inst | Method of preparing phenolic materials from lignin |
| US2528350A (en) * | 1947-06-05 | 1950-10-31 | Hardwood By Products Inc | Two-step digestion of hardwoods |
| FI27541A (fi) * | 1948-06-16 | 1955-03-10 | Aschaffenburger Zellstoffwerke | Förfaringssätt för framställning av vanillin och vanillinderivat |
| US2692291A (en) * | 1950-06-06 | 1954-10-19 | Monsanto Chemicals | Manufacture of vanillin from lignin |
-
0
- NL NL96180D patent/NL96180C/xx active
- BE BE517582D patent/BE517582A/xx unknown
-
1952
- 1952-02-21 US US272719A patent/US2750290A/en not_active Expired - Lifetime
-
1953
- 1953-02-05 GB GB3312/53A patent/GB742598A/en not_active Expired
- 1953-02-17 DE DEST5973A patent/DE1003031B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1003031B (de) | 1957-02-21 |
| NL96180C (da) | |
| GB742598A (en) | 1955-12-30 |
| US2750290A (en) | 1956-06-12 |