Tube furnace for recovery of synthesis gases from hydrocarbon cracking
Abstract
Abstract A TUBE FURNACE FOR THE RECOVERY OF SYNTHESIS GASES FROM HYDROCARBON CRACKING IN WHICH A REACTION PIPE EXTENDS THROUGH THE FURNACE FLOOR AND IS SOLELY SUPPORTED AT ITS LOWER END BENEATH SUCH FLOOR BY A COLLECTOR PIPE TO WHICH IT IS CONNECTED BY A WELDED JOINT WHICH CAN BE BROKEN FOR REPAIRING THE REACTION PIPE. CENTRALLY OF THE REACTION PIPE IS A CENTRAL PIPE LEADING FROM THE COLLECTOR TO THE FURNACE FLOOR. A SEALING MEMBER IS RIGIDLY CONNECTED RESPECTIVELY TO THE UPPER END OF THE CENTRAL PIPE AND THE REACTION PIPE PREVENTING REACTION GASES FROM PASSING TO THE SPACE BETWEEN THE CENTRAL AND REACTION PIPES. THERMAL INSULATION FILLS THE SPACE BETWEEN THE CENTRAL PIPE AND THE REACTION AND COLLECTOR PIPES, AS WELL AS BETWEEN THE SEALING MEMBER AND THE REACTION PIPE.
Inventors
- 👤 Paul Mevenkamp
- 👤 Hans-Dieter Marsch
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |