GB1284901A - Improvements in or relating to reverse osmosis apparatus - Google Patents
Improvements in or relating to reverse osmosis apparatusInfo
- Publication number
- GB1284901A GB1284901A GB1183969A GB1183969A GB1284901A GB 1284901 A GB1284901 A GB 1284901A GB 1183969 A GB1183969 A GB 1183969A GB 1183969 A GB1183969 A GB 1183969A GB 1284901 A GB1284901 A GB 1284901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- dope
- membrane
- support
- withdrawn
- 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
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/04—Tubular membranes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
1284901 Membrane for reverse osmosis UNITED KINGDOM ATOMIC ENERGY AUTHORITY 12 Feb 1970 [5 March 1969] 11839/69 Headings B1X and B2E [Also in Division C3] A semi-permeable membrane on a porous support is formed by contacting one face of the porous support with a casting dope, removing the support to a solvent vapour saturated atmosphere at such a rate and maintaining it there for such a time that the layer of dope is of the required thickness, drying the layer of dope in air, and immersing the coated support in cold water. In the embodiments described, a membrane is formed on the outer surface of a porous support tube using apparatus comprising three tubes, the membrane support tube with its lower end plugged being lowered into and almost immersed in a first tube containing the dope, withdrawn into the upper portion of the first tube which contains vapours from the dope, lifted completely out of the first tube, briefly exposed to the air, lowered into a second tube which contains water at 6‹ to 10‹C, then withdrawn and placed in a third tube which contains water at 70‹ to 80‹C, after which it is withdrawn for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1183969A GB1284901A (en) | 1969-03-05 | 1969-03-05 | Improvements in or relating to reverse osmosis apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1183969A GB1284901A (en) | 1969-03-05 | 1969-03-05 | Improvements in or relating to reverse osmosis apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1284901A true GB1284901A (en) | 1972-08-09 |
Family
ID=9993649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1183969A Expired GB1284901A (en) | 1969-03-05 | 1969-03-05 | Improvements in or relating to reverse osmosis apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1284901A (en) |
-
1969
- 1969-03-05 GB GB1183969A patent/GB1284901A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |