GB1299977A - Improvements in and relating to the formation of membranes - Google Patents
Improvements in and relating to the formation of membranesInfo
- Publication number
- GB1299977A GB1299977A GB36250/70A GB3625070A GB1299977A GB 1299977 A GB1299977 A GB 1299977A GB 36250/70 A GB36250/70 A GB 36250/70A GB 3625070 A GB3625070 A GB 3625070A GB 1299977 A GB1299977 A GB 1299977A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- support
- film
- casting liquid
- membrane
- 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
- 239000012528 membrane Substances 0.000 title abstract 7
- 230000015572 biosynthetic process Effects 0.000 title 1
- 239000007788 liquid Substances 0.000 abstract 11
- 238000005266 casting Methods 0.000 abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 238000001223 reverse osmosis Methods 0.000 abstract 2
- 239000011780 sodium chloride Substances 0.000 abstract 2
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/062—Tubular membrane modules with membranes on a surface of a support tube
- B01D63/063—Tubular membrane modules with membranes on a surface of a support tube on the inner surface thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/061—Manufacturing thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0013—Casting processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/14—Esters of organic acids
- B01D71/16—Cellulose acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/40—Details relating to membrane preparation in-situ membrane formation
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
1299977 Reverse osmosis module HYDRONAUTICS Inc 27 July 1970 [31 July 1969] 36250/70 Headings B1X and B2E A process for forming a tubular structure comprising a permeable membrane and a tubular support comprises introducing a casting liquid which comprises a film forming material and a carrier liquid into the tubular support in quantity exceeding the amount necessary to wet the entire interior wall surface of the support, draining excess casting liquid from the support and removing the carrier liquid from the film of casting liquid remaining on the support to cure the film by passing a column of liquid axially through the support. The casting liquid preferably comprises cellulose acetate, acetone and formamide; the carrier liquid is then removed to cure the membrane film by passing cold saline or cold water through the tubular support. Other casting liquid components are mentioned. A reverse osmosis module comprises (Fig. 2) parallel porous tubular supports 30, headers 32, 34 and 4-way valves 42, 52 for successive introduction and removal of casting liquid, curing liquid, hot water (to form an "active skin" on the membrane) and cold water, for preparation of the membrane film. In use, saline under pressure is supplied through line 40 and purer water is collected from the outside of tubes 30. When the module needs servicing, the membranes are dissolved away by a solvent and fresh membranes formed in the module as before.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84651169A | 1969-07-31 | 1969-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1299977A true GB1299977A (en) | 1972-12-13 |
Family
ID=25298137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36250/70A Expired GB1299977A (en) | 1969-07-31 | 1970-07-27 | Improvements in and relating to the formation of membranes |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA951188A (en) |
| DE (1) | DE2037186C3 (en) |
| FR (1) | FR2056492A5 (en) |
| GB (1) | GB1299977A (en) |
| IL (1) | IL34967A (en) |
| NL (1) | NL7011393A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189292A (en) * | 2017-12-26 | 2018-06-22 | 天津万德高科环保科技有限公司 | A kind of intelligence curtain type membrane teeming stage |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2642664B1 (en) * | 1988-12-23 | 1991-04-05 | Lyonnaise Eaux | METHOD FOR MANUFACTURING A UNIT ASSEMBLY OF FILTRATION MEMBRANES, MOLD USED AND PRODUCT THUS OBTAINED |
| DE3920562C1 (en) * | 1989-06-23 | 1990-07-12 | Amafilter Membrantechnik Gmbh, 3012 Langenhagen, De | Plate membrane used in micro- and ultra-filtration - obtd. by forming polymer membrane layer on rigid and porous plate through phase inversion process |
-
1970
- 1970-07-20 CA CA088,656,A patent/CA951188A/en not_active Expired
- 1970-07-21 IL IL34967A patent/IL34967A/en unknown
- 1970-07-27 GB GB36250/70A patent/GB1299977A/en not_active Expired
- 1970-07-27 DE DE2037186A patent/DE2037186C3/en not_active Expired
- 1970-07-30 FR FR7028213A patent/FR2056492A5/fr not_active Expired
- 1970-07-31 NL NL7011393A patent/NL7011393A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189292A (en) * | 2017-12-26 | 2018-06-22 | 天津万德高科环保科技有限公司 | A kind of intelligence curtain type membrane teeming stage |
Also Published As
| Publication number | Publication date |
|---|---|
| IL34967A (en) | 1974-11-29 |
| FR2056492A5 (en) | 1971-05-14 |
| IL34967A0 (en) | 1970-09-17 |
| DE2037186A1 (en) | 1971-02-18 |
| NL7011393A (en) | 1971-02-02 |
| DE2037186C3 (en) | 1975-03-20 |
| CA951188A (en) | 1974-07-16 |
| DE2037186B2 (en) | 1974-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |