US2737475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-05-13
•
Granted: 1956-03-06
•
Expires: 1973-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Alexis Voorhies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:28
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A METHOD OF CONVERTING HEAVY RESIDUAL HYDROCARBON OILS TO LOWER BOILING HYDROCARBONS WHICH COMPRISES INTRODUCING RESIDUAL HYDROCARBON OIL INTO A DENSE FLUIDIZED BED OF COKE SOLIDS MAINTAINED AT COKING TEMPERATURE IN A COKING ZONE IN THE LOWER PORTION OF A VERTICAL VESSEL, WITHDRAWING COKE PARTICLES FROM SAID COKING ZONE AND HEATING THEM IN A BURNER, PASSING A PORTION OF THE HEATED COKE PARTICLES TO THE COKING ZONE, PASSING ANOTHER PORTION OF THE HEATED COKE PARTICLES AND AN ACTIVATING HALOGEN-CONTAINING MATERIAL TO A CATALYTIC CRACKING SECTION CONTAINING AT LEAST ONE FLUIDIZED BED COKE SOLIDS IN THE UPPER PORTION OF SAID VERTICAL VESSEL, PASSING VAPOROUS COKER PRODUCTS DIRECTLY FROM SAID COKING ZONE UPWARDLY INTO SAID CATALYTIC CRACKING ZONE, RECOVERING CATALYTICALLY CRACKED VAPORS OVERHEAD FROM SAID CRACKING ZONE, PASSING SOLIDS DOWNWARDLY FROM SAID CRACKING ZONE TO SAID COKING ZONE.
Claim 2
Independent Claim
136 words
A METHOD OF CONVERTING HEAVY RESIDUAL HYDROCARBON OILS TO LOWER BOILING HYDROCARBONS WHICH COMPRISES INTRODUCING RESIDUAL HYDROCARBON OIL INTO A DENSE FLUIDIZED BED OF COKE SOLIDS MAINTAINED AT COKING TEMPERATURE IN A COKING ZONE IN THE LOWER PORTION OF A VERTICAL VESSEL, WITHDRAWING COKE PARTICLES FROM SAID COKING ZONE AND HEATING THEM IN A BURNER, PASSING A PORTION OF THE HEATED COKE PARTICLES TO THE COKING ZONE, PASSING ANOTHER PORTION OF THE HEATED COKE PARTICLES AND AN ACTIVATING HALOGEN-CONTAINING MATERIAL TO A CATALYTIC CRACKING SECTION CONTAINING AT LEAST ONE FLUIDIZED BED COKE SOLIDS IN THE UPPER PORTION OF SAID VERTICAL VESSEL, PASSING VAPOROUS COKER PRODUCTS DIRECTLY FROM SAID COKING ZONE UPWARDLY INTO SAID CATALYTIC CRACKING ZONE, RECOVERING CATALYTICALLY CRACKED VAPORS OVERHEAD FROM SAID CRACKING ZONE, PASSING SOLIDS DOWNWARDLY FROM SAID CRACKING ZONE TO SAID COKING ZONE.
References Cited (Backward Citations)
US2525812A
Cited
US2655464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |