US3607667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desalination of water by heat exchange,microwave heating and flash distillation
Assignee: STEPHEN J NESBITT
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Filing: 1966-12-30
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Granted: 1971-09-21
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Expires: 1986-12-30
Abstract
Abstract A process and the apparatus for the desalination of water by flash distillation. The Distillation operation is performed in five steps initiating with (1) counter current heat exchange of the water with hot fresh desalinated water; (2) generating heat throughout the body of water by the application of microwave energy; (3) passing the water in counter current heat exchange with super heated stem; (4) reducing the pressure on the water thereby causing flash vaporization and (5) separating the solute by centrifugal action. The apparatus comprises a central pipe having flat ducts in sets of four.
Inventors
- 👤 Edward M Knapp
- 👤 Stephen J Nesbitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:15
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y10; Y10S; Y10S159/00; Y10S159/26; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
Apparatus consisting of a centrally located pipe, rotating on a vertical and longitudinal axis, flat ducts attached to said centrally located pipe in a maltese cross configuration and in sets of four, each individual flat duct having closed radial edges, an upper surface canted with respect to the longitudinal axis of the centrally located pipe and a lower surface perpendicular to said longitudinal axis of the centrally located pipe, an opening connecting with the centrally located pipe for the passage of liquid and an opening in the outward end of said duct for the passage of vapor, steam, and particulate matter, the apparatus hereinbefore described enclosed in a larger pipe in which a slit permitting the tips of each of the four flat ducts comprising a set to protrude and discharge vapor, steam, and particulate matter into a still larger steam chest which encloses all the apparatus hereinbefore described and which communicates at the top thereof with the larger pipe within which the sets of four ducts rotate.
Claim 2
Dependent Claim
100 words
Apparatus similar to that described in claim 2 except that there is a multiplicity of sets of four flat ducts, the multiplicity arrayed in pairs in which the second or lower member of the pair is attached to the central pipe with a permanent rotation of 90* , the effect being to provide an open but tortuous path for the passage of vapor around and between the sets of flat ducts, it being understood that in the wall of the larger pipe inside the steam chest there is a multiplicity of slits, one for each set of four flat ducts.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |