US4303468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical vapor recompression evaporators
Assignee: Laguilharre Ets
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Filing: 1980-04-03
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Granted: 1981-12-01
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Expires: 2000-04-03
Abstract
Abstract The present invention relates to a process for providing make-up heat in a mechanical vapour recompression evaporator (1, 8, 9). It includes using the evaporation vapour created in another evaporator (5) called make-up evaporator. The invention finds particular application in the dairy industry.
Inventors
- 👤 Pierre R. Laguilharre
- 👤 Jacques J. Ciboit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:36
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/28; B01D1/2803; B01D1/2806; B01D1/284; B01D1/2846
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
A process for providing make-up heat in a mechanical vapour recompression evaporator which comprises introducing the product to be concentrated into a first evaporator, introducing the concentrated product discharged from said evaporator to a second make-up evaporator, the vapour created as a result of the condensation process in said first evaporator being conveyed after processing to the heating unit of said first evaporator, the evaporation vapour created in said make-up evaporator being directed through a vapour-liquid separator to the heating unit of said first evaporator where it serves as make-up heat for the operating cycle of said first evaporator.
Claim 2
Dependent Claim
99 words
A process for providing make-up heat in a mechanical vapour recompression evaporator which comprises introducing the product to be concentrated into a first evaporator, introducing the concentrated product discharged from said evaporator to a second make-up evaporator, the vapour created as a result of the condensation process in said first evaporator being conveyed after processing to the heating unit of said first evaporator, the evaporation vapour created in said make-up evaporator being directed through a vapour-liquid separator to the heating unit of said first evaporator where it serves as make-up heat for the operating cycle of said first evaporator.
Claim 3
Dependent Claim
17 words
A process according to claim 1 characterized in the evaporator system comprises a mechanical vapour recompression evaporator.
Claim 4
Dependent Claim
17 words
A process according to claim 2 characterized in that said make-up evaporator comprises a vapour thermocompression evaporator.
Claim 5
Dependent Claim
20 words
A process according to claim 3 characterized in that a mechanical vapour recompressor is associated with said vapour thermocompression evaporator.
Claim 6
Dependent Claim
56 words
A process according to claim 4, characterized in that the vapour used for providing make-up heat is a fraction of that directly issuing from the make-up evaporator, the rest of the vapour created in the make-up evaporator being used, after compression in the thermocompressor or in the mechanical vapour recompressor-thermocompressor association for heating said make-up evaporator.
Claim 7
Dependent Claim
49 words
A process according to claim 4, characterized in that the vapour used for providing make-up heat is from the thermocompressor or from the mechanical vapour recompressor-thermocompressor association, the vapour created in the mechanical vapour recompression evaporator and not subjected to mechanical recompression being used for heating the make-up evaporator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |