Air-cooled condenser for head fractions in rectifying or distilling columns
Abstract
Abstract A distilling or rectifying column wherein the upper end portion of the shell carries an air-cooled condenser for the head fraction. The condenser has several discrete condensing units whose heat-exchanging pipes communicate with the shell to receive the head fraction and discharge condensate into collecting chambers. Each condensing unit is surrounded by an enclosure which has an inlet below the pipes and shields the outer sides of the pipes from wind, sun and precipitation. The air is drawn through the inlets by one or more fans which are mounted in a dome located above a compartment which is surrounded by the condensing units. The spaces defined by the enclosures at the outer sides of pipes in the condensing units taper upwardly from the inlets to insure uniform distribution of air pressure. The enclosures can be united into a single annular enclosure which completely surrounds the condensing units.
Inventors
- 👤 Harry Kassat
- 👤 Ernst Kissel
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |