US2867676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for conducting high temperature conversions using fluidized solids as heat exchange media
Assignee: Sinclair Refining Co
•
Filing: 1956-01-04
•
Granted: 1959-01-06
•
Expires: 1976-01-04
Abstract
No abstract record available.
Inventors
- 👤 Donald K Wunderlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:27
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A METHOD FOR CONDUCTING CHEMICAL CONVERSIONS AT HIGH TEMPERATURES WHICH COMPRISES MAINTAINING A BED OF FLUIDIZED SOLIDS AT HIGH TEMPERATURE IN A REACTION ZONE, WITHDRAWING A PORTION OF THE SOLIDS OF SAID BED AND HEAT EXCHANGING SAID WITHDRAWN SOLIDS WITH A FEED STOCK, PASSING THE RESULTING HEATED FEED STOCK INTO SAID BED OF FLUIDIZED SOLIDS TO EFFECT CONVERSION TO DESIRED PRODUCT, PASSING THE RESULTING PRODUCTS OF REACTION INTO A CYCLONE SEPARATING ZONE, COOLING THE HEAT EXCHANGED WITHDRAWN SOLIDS TO A LOWER TEMPERATURE AND THEN PASSING THEM INTO CONTACT WITH SAID PRODUCTS IN SAID SEPARATING ZONE, RECOVERING COOLED AND CLEANED PRODUCTS FROM SAID SEPARATING ZONE, PASSING SAID SOLIDS FROM SAID ZONE TO A REHEATING ZONE AND BURNING COKE AND TAR DEPOSITS THEREFROM, AND THEN PASSING REHEATED SOLIDS INTO SAID REACTION ZONE.
Claim 2
Independent Claim
130 words
A METHOD FOR CONDUCTING CHEMICAL CONVERSIONS AT HIGH TEMPERATURES WHICH COMPRISES MAINTAINING A BED OF FLUIDIZED SOLIDS AT HIGH TEMPERATURE IN A REACTION ZONE, WITHDRAWING A PORTION OF THE SOLIDS OF SAID BED AND HEAT EXCHANGING SAID WITHDRAWN SOLIDS WITH A FEED STOCK, PASSING THE RESULTING HEATED FEED STOCK INTO SAID BED OF FLUIDIZED SOLIDS TO EFFECT CONVERSION TO DESIRED PRODUCT, PASSING THE RESULTING PRODUCTS OF REACTION INTO A CYCLONE SEPARATING ZONE, COOLING THE HEAT EXCHANGED WITHDRAWN SOLIDS TO A LOWER TEMPERATURE AND THEN PASSING THEM INTO CONTACT WITH SAID PRODUCTS IN SAID SEPARATING ZONE, RECOVERING COOLED AND CLEANED PRODUCTS FROM SAID SEPARATING ZONE, PASSING SAID SOLIDS FROM SAID ZONE TO A REHEATING ZONE AND BURNING COKE AND TAR DEPOSITS THEREFROM, AND THEN PASSING REHEATED SOLIDS INTO SAID REACTION ZONE.
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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |