US3816084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cokeless coker with recycle of coke from gasifier to heater
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1972-05-04
•
Granted: 1974-06-11
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Expires: 1992-05-04
Abstract
Abstract In a fluid coking process in which coke from the coker is passed to a heater and then to a gasifier and in which part of the heat for the heater is supplied by the gases from the gasifier, ungasified coke from the bottom of the gasifier is conveyed through a riser to the heater to supply additional heat and thence back to the coker whereby strength of the coke is increased by fresh coke deposition and in which all the oxygen is injected into the lower gasifier bed thereby eliminating possibility of oxygen breakthrough. The same results can be accomplished by passing the coke from the gasifier directly back to the coke reactor and eliminating the coke stream from the upper heater bed to the reactor.
Inventors
- 👤 J Moser
- 👤 W Metrailer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:55
CPC Classifications
C; C10; C10J; C10J1/00; C10J1/207; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
18 words
A process according to claim 1 wherein said gasifying zone is operated at temperatures greater than about 1600*F.
Claim 2
Dependent Claim
29 words
A process according to claim 1 wherein said fluid coking zone, said heating zone and said gasifying zone are operated at a pressure not greater than about 150 psig.
Claim 3
Dependent Claim
21 words
A process according to claim 1 wherein said gasifying zone is operated at a pressure not greater than about 60 psig.
Claim 4
Dependent Claim
21 words
The process according to claim 1, wherein said gasifying zone is operated at a pressure not greater than about 45 psig.
Claim 5
Dependent Claim
23 words
A process according to claim 1 wherein said hot H2 and CO containing gaseous stream is at a temperature greater than about 1600*F.
Claim 6
Dependent Claim
29 words
A process according to claim 1 wherein an inert fluidizing gas may be introduced to said heating zone in addition to said hot H2 and CO containing gaseous streams.
Claim 7
Dependent Claim
28 words
A process according to claim 1, wherein said carbonaceous material is a heavy petroleum oil residuum having a Conradson carbon content of at least about 7 weight percent.
Claim 8
Dependent Claim
14 words
The process of claim 1, wherein said heating zone also Contains an inert solid.
Claim 9
Dependent Claim
241 words
In an integrated fluid coking-gasification process for the production of coke and a gaseous stream containing H2 and CO, which comprises: a. reacting a carbonaceous material having a Conradson carbon content of at least 5 wt. percent in a fluid coking zone operating at a temperature between 900*F. and 1200*F. to form coke; b. introducing at least a portion of said coke into a heating zone operating at a temperature 100* to 300*F. greater than said fluid coking zone temperature to heat said coke; c. introducing a portion of the resulting heated coke to a gasifying zone operating at a temperature greater than said temperature of said heating zone; d. reacting said heated coke portion in said gasifying zone with steam and an oxygen-containing gas to produce a hot gaseous stream containing H2 and CO, whereby the remaining coke is heated to the operating temperature of said gasifying zone, the improvement which comprises: e. passing said hot gaseous stream containing H2 and CO and entrained coke to said heating zone to provide all of the heat requirements of said heating zone, coke being the only volatilizable normally solid carbonaceous material introduced into said heating zone, f. recovering the resulting cooled gaseous stream containing H2 and CO from said heating zone, and g. passing a portion of the remaining heated coke of step (d) directly from said gasifying zone to said fluid coking zone to provide heat to said fluid coking zone.
Claim 10
Dependent Claim
14 words
The process of claim 10, wherein said heating zone additionally contains an inert solid.
Claim 11
Dependent Claim
18 words
A process according to claim 10, wherein said gasifying zone is operated at temperatures greater than about 1600*F.
Claim 12
Dependent Claim
29 words
A process according to claim 10 wherein said fluid coking zone, said heating zone and said gasifying zone are operated at a pressure not greater than about 150 psig.
Claim 13
Dependent Claim
21 words
The process according to claim 10, wherein said gasifying zone is operated at a pressure not greater than about 60 psig.
Claim 14
Dependent Claim
21 words
The process according to claim 10, wherein said gasifying zone is operated at a pressure not greater than about 45 psig.
Claim 15
Dependent Claim
22 words
A process according to claim 10 wherein said hot H2 and CO containing gaseous stream is at temperatures greater than about 1600*F.
Claim 16
Dependent Claim
29 words
A process according to claim 10 wherein an inert fluidizing gas may be introduced to said heating zone in addition to said hot H2 and CO containing gaseous stream.
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |