US4051016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid coking with H2 S addition
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1976-01-27
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Granted: 1977-09-27
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Expires: 1996-01-27
Abstract
Abstract A fluid coking process is provided in which a relatively large amount of hydrogen sulfide is added to the coker fluidizing gas. A preferred fluidizing gas is a mixture of hydrogen and hydrogen sulfide.
Inventors
- 👤 William J. Metrailer
- 👤 Charles Rebick
- 👤 Richard K. Lyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:31
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/28; C10G9/32; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G9/005; C10G2400/00; C10G2400/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
In a fluid coking process comprising the steps of contacting a carbonaceous material having a Conradson carbon content of at least 5 weight percent with hot fluidized solids in a fluidized coking bed contained in a coking zone maintained in a fluidized state by the introduction of a fluidizing gas and operated at coking conditions, including a pressure ranging from about 0 to about 150 psig, to produce a vapor phase product and a solid carbonaceous material which deposits on said fluidized solids, the improvement which comprises introducing into said coking zone a fluidizing gas comprising from about 5 to about 40 mole percent of hydrogen sulfide, based on the total gas introduced into said coking zone.
Claim 2
Dependent Claim
117 words
In a fluid coking process comprising the steps of contacting a carbonaceous material having a Conradson carbon content of at least 5 weight percent with hot fluidized solids in a fluidized coking bed contained in a coking zone maintained in a fluidized state by the introduction of a fluidizing gas and operated at coking conditions, including a pressure ranging from about 0 to about 150 psig, to produce a vapor phase product and a solid carbonaceous material which deposits on said fluidized solids, the improvement which comprises introducing into said coking zone a fluidizing gas comprising from about 5 to about 40 mole percent of hydrogen sulfide, based on the total gas introduced into said coking zone.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein said hydrogen sulfide comprises from about 10 to about 30 mole percent of said fluidizing gas.
Claim 4
Dependent Claim
26 words
The process of claim 1 wherein said fluidizing gas also comprises a member selected from the group consisting of steam, vaporized hydrocarbons, hydrogen, and mixtures thereof.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein said fluidizing gas comprises at least 30 mole percent hydrogen.
Claim 6
Dependent Claim
16 words
The process of claim 1 wherein said fluidizing gas comprises at least 40 mole percent hydrogen.
Claim 7
Dependent Claim
23 words
The process of claim 1 wherein at least a portion of said hydrogen sulfide is introduced into said coking zone in gaseous form.
Claim 8
Dependent Claim
30 words
The process of claim 1 wherein at least a portion of said hydrogen sulfide is introduced into said coking zone in a solution from which it is vaporized in situ.
Claim 9
Dependent Claim
20 words
The process of claim 1 wherein said coking conditions include a temperature ranging from about 850° to about 1200° F.
Claim 10
Dependent Claim
20 words
The process of claim 1 wherein said coking conditions include a temperature ranging from about 950° to about 1100° F.
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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |