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US3901667A
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Manufacture of methane-containing gases using an integrated fluid coking and gasification process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1973-10-18
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Granted: 1975-08-26
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Expires: 1993-10-18
Abstract
Abstract A petroleum refinery process for converting sulfur-containing crude oil into a methane-containing gas and low sulfur oil, wherein the gaseous effluent of an integrated fluid coking and coke gasification process is desulfurized and utilized as incremental feed for the methanation stage of a naphtha gasification process.
Inventors
- 👤 John W Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:37
CPC Classifications
C; C10; C10L; C10L3/00; C07; C07C; C07C1/00; C07C1/02; C10B; C10B55/00; C10G; C10G65/00; C10G65/14; C10G65/16; C10G69/00; C10K; C10K3/00; C10K3/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
IN A REFINERY PROCESS FOR MANUFACTURING A GAS CONTAINING METHANE WHEREIN A NAPHTHA GASIFICATION PROCESS COMPRISING A STEAM REFORMING STAGE AND A METHANATION STAGE IS INTEGRATED WITH A FLUID COKING AND COKE GASIFICATION PROCESS, AND WHEREIN THE GASEOUS PRODUCT OF SAID COKE GASIFICATION PROCESS COMPRISES HYDROGEN, CARBON OXIDES AND A MINOR AMONT OF HYDROGEN SULFIDE, THE IMPROVEMENT WHICH COMPRISES DESULFURIZING SAID GASEOUS PRODUCT AND UTILIZING THE RESULTING DESULFURIZED GASEOUS PRODUCT, WITHOUT INTERVENING CONVERSION, AS INCRE-
Claim 2
Dependent Claim
75 words
IN A REFINERY PROCESS FOR MANUFACTURING A GAS CONTAINING METHANE WHEREIN A NAPHTHA GASIFICATION PROCESS COMPRISING A STEAM REFORMING STAGE AND A METHANATION STAGE IS INTEGRATED WITH A FLUID COKING AND COKE GASIFICATION PROCESS, AND WHEREIN THE GASEOUS PRODUCT OF SAID COKE GASIFICATION PROCESS COMPRISES HYDROGEN, CARBON OXIDES AND A MINOR AMONT OF HYDROGEN SULFIDE, THE IMPROVEMENT WHICH COMPRISES DESULFURIZING SAID GASEOUS PRODUCT AND UTILIZING THE RESULTING DESULFURIZED GASEOUS PRODUCT, WITHOUT INTERVENING CONVERSION, AS INCRE-
Claim 3
Dependent Claim
58 words
The process of claim 1, wherein said fluid coking is conducted at a temperature between about 900* and 1,200*F and at a pressure below 150 psig to produce fluid coke and wherein said coke gasification gaseous product is obtained by contacting said fluid coke with steam and oxygen under gasification conditions including a temperature between 1,600*F and 1,900*F.
Claim 4
Dependent Claim
14 words
The process of claim 1, wherein said desulfurized gaseous product is substantially hydrogen-sulfidefree gas.
Claim 5
Dependent Claim
47 words
The process of claim 1, wherein said coke gasification gaseous product is desulfurized by contacting said product with an alkaline solution comprising an anthraquinone disulfonic acid in a scrubbing zone wherein at least a portion of the hydrogen sulfide is removed from the gaseous coke gasification product.
Claim 6
Dependent Claim
28 words
The process of claim 4, wherein said coke gasification gaseous product is cooled to a temperature of about 110*F. prior to its being passed to said scrubbing 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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |