US3579616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of carrying out endothermic processes
Assignee: GEA Group AG
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Filing: 1969-05-05
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Granted: 1971-05-18
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Expires: 1989-05-05
Abstract
Abstract IN AN ENDOTHERMIC PROCES, RAW SOLIDS ARE FIRST DRIED IN A SUSPENSION-TYPE HEAT-EXCHANGER SYSTEM BY HOT GAS COMING FROM A FLUIDIZED-BED FURNACE WITH MATERIAL RECYCLING AND THEN INTRODUCED INTO THE FLUIDIZED BED. HOT SOLIDS TAKEN FROM THE FLUIDIZED BED ARE USED IN HEAT EXCHANGER TO PREHEAT FRESH AIR WHICH IS USED AS THE FLUIDIZING GAS FOR THE FLUIDIZED BED. ANOTHER PORTION OF AIR IS ALSO HEATED IN THE HEAT EXCHANGER AND INTRODUCED IN THE FLUIDIZED BED AS SECONDARY AIR.
Inventors
- 👤 Lothar Reh
- 👤 Karlheinz Rosenthal
- 👤 Hans Werner Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:52
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; B01J8/24; B01J8/38; B01J8/384; B01J8/388; C; C04; C04B; C04B2/00; C04B2/10; C04B2/106; C04B7/00; C04B7/36; C04B7/43; C04B7/44; C04B7/45; F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |