GB736459A - Improvements relating to the concentration of isotopes - Google Patents
Improvements relating to the concentration of isotopesInfo
- Publication number
- GB736459A GB736459A GB16570/53A GB1657053A GB736459A GB 736459 A GB736459 A GB 736459A GB 16570/53 A GB16570/53 A GB 16570/53A GB 1657053 A GB1657053 A GB 1657053A GB 736459 A GB736459 A GB 736459A
- Authority
- GB
- United Kingdom
- Prior art keywords
- complex
- compound
- column
- isotopes
- phase
- Prior art date
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/28—Separation by chemical exchange
- B01D59/32—Separation by chemical exchange by exchange between fluids
Abstract
A compound A is separated into two fractions which are relatively enriched in different isotopes of an element contained in A, by forming a complex compound AB, heating the complex compound to form a vapour phase in which the ratio between the content of the compound A in the form of the complex to the total content of the compound A is different from that in the liquid phase, and creating a countercurrent flow between the vapour phase and the liquid phase in a cascade to effect an isotope exchange between the vapour phase and the liquid phase so that lighter isotopes are concentrated at one end of the cascade and heavy isotopes at the other. In examples (1) the complex of diethyl (or dimethyl) ether and boron trifluoride was distilled at 75 DEG C. in a column of 30 theoretical plates at a pressure of 60 mm. Hg. B10 became concentrated at the bottom of the column; (2) trimethyl amine and acetic acid were distilled at 80 DEG C. and 40 mm. Hg. N15 became concentrated at the bottom of the column. The distillation was carried out with total reflux and a boil up of about 1 g. per minute for 24 hours, using about 50 g. material. The distillation of the complex of boron trifluoride and anisole, the anisole being recirculated from bottom to top of the column, and of the complex of triethylamine and sulphur dioxide (for separation of the sulphur isotopes) are also referred to.ALSO:A compound A is separated into two fractions which are relatively enriched in different isotopes of an element contained in A, by forming a complex compound AB and converting the complex compound, if necessary, to the liquid state by solution or heat, heating the complex compound to form a vapour phase in which the ratio between the content of the compound A in the form of the complex to the total content of the compound A is different from that in the liquid phase, and creating a countercurrent flow between the vapour phase and the liquid phase in a cascade to effect an isotope exchange between the vapour phase and the liquid p phase so that lighter isotopes are concentrated at one end of the cascade and heavy isotopes at the other. In examples: (1) the complex of diethyl (or dimethyl) ether and boron trifluoride was distilled at 75 DEG C. in a column of 30 theoretical plates at a pressure of 60 mm. Hg. B10 became concentrated at the bottom of the column. (2) Trimethylamine and acetic acid were distilled at 80 DEG C. and 40 mm. Hg. N15 became concentrated at the bottom of the column. The distillation was carried with total reflux and a boil-up rate of about 1 g. per minute for 24 hours using about 50 g. material. Other examples referred to are the complex of boron trifluoride and anisole, the anisole being recirculated from bottom to top of the column, ammonia, carbon dioxide and water, the water being recirculated, ammonia, sodium hydrogen and sodium dihydrogen phosphate, the water and phosphates in solution being recirculated, the complex of triethylamine and sulphur dioxide, and sulphur dioxide, phosphoric acid and sodium dihydrogen phosphate. In the last two cases the sulphur isotopes are separated.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE736459X | 1952-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB736459A true GB736459A (en) | 1955-09-07 |
Family
ID=20319703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16570/53A Expired GB736459A (en) | 1952-07-09 | 1953-06-16 | Improvements relating to the concentration of isotopes |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE944848C (en) |
FR (1) | FR1081016A (en) |
GB (1) | GB736459A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3101256A (en) * | 1958-08-28 | 1963-08-20 | Quartz & Silice S A | Separation of hydrogen isotopes |
US7976708B2 (en) | 2008-05-12 | 2011-07-12 | Secretary, Department of Atormic Energy | Innovative cut-and-feed operation for enhancing the performance of ion-exchange chromatographic separation |
-
1953
- 1953-06-16 GB GB16570/53A patent/GB736459A/en not_active Expired
- 1953-06-21 DE DEH16793A patent/DE944848C/en not_active Expired
- 1953-07-08 FR FR1081016D patent/FR1081016A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3101256A (en) * | 1958-08-28 | 1963-08-20 | Quartz & Silice S A | Separation of hydrogen isotopes |
US7976708B2 (en) | 2008-05-12 | 2011-07-12 | Secretary, Department of Atormic Energy | Innovative cut-and-feed operation for enhancing the performance of ion-exchange chromatographic separation |
Also Published As
Publication number | Publication date |
---|---|
DE944848C (en) | 1956-06-28 |
FR1081016A (en) | 1954-12-15 |
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