US3936489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and equipment for solvent extraction
Assignee: Eszakmagyarorszagi Vegyimuevek
•
Filing: 1972-11-13
•
Granted: 1976-02-03
•
Expires: 1992-11-13
Abstract
Abstract Process for the solvent extraction of liquids mutually immiscible with each other and having different specific gravity, in which both the mother liquor and the solvent(s) are dispersed in a gas or vapour, thereafter the disperse state of the system is terminated by condensation, and the immiscible phases are separated from each other.
Inventors
- 👤 Laszlo Rozsa
- 👤 Lajos Meszaros
- 👤 Ferenc Mogyorodi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:08
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0449
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
In a process for the solvent extraction of a component of a mother liquor comprising liquids that are immiscible with each other and have differing specific gravities, the improvement which comprises, in sequence: dispersing said liquids and a solvent by simultaneously atomizing them together with an atomizing gas through a spraying nozzle into an extraction chamber, then condensing the dispersion to terminate the disperse state, and separating the immiscible phases from each other.
Claim 2
Dependent Claim
73 words
In a process for the solvent extraction of a component of a mother liquor comprising liquids that are immiscible with each other and have differing specific gravities, the improvement which comprises, in sequence: dispersing said liquids and a solvent by simultaneously atomizing them together with an atomizing gas through a spraying nozzle into an extraction chamber, then condensing the dispersion to terminate the disperse state, and separating the immiscible phases from each other.
Claim 3
Dependent Claim
21 words
The process of claim 1, wherein said sequence of dispersing, condensing and separating is carried out at least twice in succession.
Claim 4
Dependent Claim
30 words
The process of claim 2, in which the separated mother liquor recovered in a previous sequence is mixed a separated solvent recovered in a sequence subsequent to said previous sequence.
Claim 5
Dependent Claim
27 words
The process of claim 2, in which the separated mother liquor recovered in a previous sequence is mixed with the separated solvent recovered in said previous sequence.
Claim 6
Dependent Claim
21 words
The process of claim 2, in which the separated mother liquor recovered in a previous sequence is mixed with fresh solvent.
Claim 7
Dependent Claim
18 words
The process of claim 1, wherein said extraction chamber is cooled below or heated above the ambient temperature.
Claim 8
Dependent Claim
45 words
The process of claim 6, in which the temperature of the extraction chamber is maintained at a temperature which is above the solidification point of the liquid having the highest solidification point, and below the boiling point of the liquid having the lowest boiling point.
Claim 9
Dependent Claim
13 words
The process of claim 1, wherein said atomizing gas is an inert gas.
References Cited (Backward Citations)
US1696432A
Cited
US1936755A
Cited
US1717719A
Cited
US1952845A
Cited
US2156344A
Cited
US2342042A
Cited
US2341536A
Cited
US2512245A
Cited
US2831754A
Cited
GB1155041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |