Patent US3907664A successfully refreshed from Google Patents.
US3907664A
Expired / Lapsed
US
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Integrated delayed coking and thermal cracking refinery process
Assignee: ConocoPhillips Co
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Filing: 1973-05-02
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Granted: 1975-09-23
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Expires: 1993-05-02
Abstract
Abstract An integrated delayed coker and thermal cracker refinery process is provided using a single fractionator for both delayed coking and thermal cracking of a residual hydrocarbon feedstock whereby the thermal efficiency and process control of the simple integrated process are significantly improved over a comparable process producing needle or delayed coke.
Inventors
- 👤 Harry Richard Janssen
- 👤 Gerald Donald Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:40
CPC Classifications
C; C10; C10G; C10G9/00; C10B; C10B55/00; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
AN INTEGRATED REFINERY PROCESS INCLUDING A DELAYED COKING OPERATION AND A THERMAL CRACKING OPERATION IN WHICH SAID DELAYED COKING OPERATION AND SAID THERMAL CRACKING OPERATION UTILIZE A SINGLE FRACTIONATOR, SAID PROCESS COMPRISING: A. CHARGING A LIQUID HYDROCARBON FEEDSTOCK TO A FRACTIONATOR, B. WITHDRAWING COKER FEEDSTOCK FROM THE LOWER PORTION OF SAID FRACTIONATOR AND CHARGING SAID COKER FEEDSTOCK TO A COKER FUNANCE HEATER, C. PASSING SAID COKER FEEDSTOCK FROM THE COKER FURNACE HEATER TO A DELAYED COKING DRUM, D. WITHDRAWING OVERHEAD PRODUCT FROM SAID DELAYED COKING DRUM AND RETURNING SAID OVERHEAD PRODUCT TO SAID FRACTIONATOR,
Claim 2
Dependent Claim
94 words
AN INTEGRATED REFINERY PROCESS INCLUDING A DELAYED COKING OPERATION AND A THERMAL CRACKING OPERATION IN WHICH SAID DELAYED COKING OPERATION AND SAID THERMAL CRACKING OPERATION UTILIZE A SINGLE FRACTIONATOR, SAID PROCESS COMPRISING: A. CHARGING A LIQUID HYDROCARBON FEEDSTOCK TO A FRACTIONATOR, B. WITHDRAWING COKER FEEDSTOCK FROM THE LOWER PORTION OF SAID FRACTIONATOR AND CHARGING SAID COKER FEEDSTOCK TO A COKER FUNANCE HEATER, C. PASSING SAID COKER FEEDSTOCK FROM THE COKER FURNACE HEATER TO A DELAYED COKING DRUM, D. WITHDRAWING OVERHEAD PRODUCT FROM SAID DELAYED COKING DRUM AND RETURNING SAID OVERHEAD PRODUCT TO SAID FRACTIONATOR,
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the feedstock charged to said fractionator is an atmospheric or vacuum virgin residuum.
References Cited (Backward Citations)
US2096589A
Cited
US2099718A
Cited
US2125535A
Cited
US2126229A
Cited
US2325233A
Cited
US2338020A
Cited
US2316334A
Cited
US2636844A
Cited
US2745794A
Cited
US2852439A
Cited
US2922755A
Cited
US3472761A
Cited
US3547804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |