Multiple effect evaporator system
Abstract
Abstract A multiple effect vertical tube evaporator system employing an elongated shell with a plurality of juxtapositioned and transversely-oriented effects characterized by alternatively-opposite, horizontal, transverse vapor flow in adjacent effects and positioned in the shell with each effect having a condensing side and an evaporating side to form a concentrate and a hot vapor with two longitudinally-extending, internally-disposed preheater compartments located respectively along opposite inside walls of the elongated shell. The two preheater compartments are each subdivided into several distinct preheater sections with each preheater section being associated with the condensing side of a single effect with means being provided for removing condensate and vapor from the condensing side of said single effect to the associated preheater section with alternate effects being connected to preheater sections of the opposing preheater compartments. A bundle of longitudinally-extending tubes is situated in each of the two preheater compartments for heating evaporator feed prior to its introduction into the multiple effect evaporator.
Inventors
- 👤 K Frank
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |