US3635800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer of liquid as vapor between bodies of liquid with different curvatures and associated vapor pressures
Assignee: Pactide Corp
•
Filing: 1970-03-23
•
Granted: 1972-01-18
•
Expires: 1990-03-23
Abstract
Abstract A liquid transfer system is disclosed, particularly applicable to the desalination of water, in which a solution, e.g., saline water, is formed into fine droplets having a specified curvature and associated vapor pressure dispersed in a carrier fluid immiscible with the solvent to form a disperse system which is then brought into intimate association with a body of solvent of lower solute concentration and having a smaller curvature and lower associated vapor pressure creating an unstable condition in which solvent transfers as vapor from the droplets of the disperse system to the body of solvent. Examples are given in which the disperse system is an aerosol, i.e., carrier fluid is a gas, or an emulsion, i.e., carrier fluid is a liquid.
Inventors
- 👤 Franklin A Rodger
- 👤 Edward M Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:35
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y10; Y10S; Y10S159/00; Y10S159/17; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
20 words
The method of claim 1 in which said carrier fluid is a gas and said disperse system is an aerosol.
Claim 2
Dependent Claim
19 words
The method of claim 1 wherein said carrier fluid is a liquid and said disperse system is an emulsion.
Claim 3
Dependent Claim
154 words
The method of claim 1 further including the steps of providing at least one second liquid body of said volatile liquid in which the concentration of said less volatile constituent is lower than the concentration thereof in the first-mentioned liquid body; a second disperse system comprising minute droplets of said liquid of said first-mentioned liquid body suspended in said carrier fluid, said droplets of said second disperse system having a curvature that is large relative to the curvature of said second body at a second interface to be formed between said second body and said carrier fluid of said second disperse system; and introducing said second disperse system into intimate association with said liquid of said second body to form said second interface and to transfer a portion of said volatile liquid, as vapor, from said dispersed droplets of said second disperse system to the carrier fluid thereof and then to said second body.
Claim 4
Dependent Claim
41 words
The method of claim 4 wherein said second disperse system is collected following transfer of said volatile liquid therefrom to said second liquid body and is introduced together with the first-mentioned disperse system into intimate association with said first-mentioned liquid body.
Claim 5
Dependent Claim
26 words
The method of claim 4 wherein said carrier fluid is a liquid immiscible with said volatile liquid and Saturated therewith and said disperse systems are emulsions.
Claim 6
Dependent Claim
23 words
The method of claim 4 wherein said carrier fluid is a gas saturated with said volatile liquid and said disperse systems are aerosols.
Claim 7
Dependent Claim
45 words
The method of claim 7 wherein liquid including said less volatile constituent is withdrawn as liquid from said first-mentioned liquid body and is introduced into said second liquid body to maintain the concentration of said less volatile constituent in said second liquid body substantially constant.
Claim 8
Dependent Claim
44 words
The liquid transfer method of claim 1 in which said volatile liquid is a solvent and said less volatile substance includes a solute which exhibits no significant vapor pressure at temperatures at which said liquid exhibits a significant vapor pressure, dissolved in said solvent.
Claim 9
Dependent Claim
19 words
The liquid transfer method of claim 9 in which said solvent is water and said solute is a salt.
Claim 10
Dependent Claim
21 words
The liquid transfer method of claim 9 in which said carrier fluid consists substantially of the saturated vapor of said solvent.
Claim 11
Dependent Claim
57 words
The liquid transfer method of claim 1 in which said liquid body is provided within a system from which substantially all gas except the vapor of said volatile liquid has been removed, said system is maintained at reduced pressure and said saturated vapor of said volatile liquid is formed by introducing said volatile liquid into said system.
Claim 12
Dependent Claim
29 words
The liquid transfer method of claim 1 wherein said carrier fluid is a liquid in which said volatile liquid is soluble and said less volatile constituent is substantially insoluble.
Claim 13
Dependent Claim
21 words
The liquid transfer method of claim 13 wherein said volatile liquid is water and said less volatile constituent is a salt.
Claim 14
Dependent Claim
21 words
The liquid transfer method of claim 14 wherein said carrier liquid is an organic compound substantially insoluble in said volatile liquid.
Claim 15
Dependent Claim
13 words
The liquid transfer method of claim 14 wherein said carrier liquid is phenol.
References Cited (Backward Citations)
US3350300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |