US4066738A
Expired / Lapsed
US
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Process for producing a fuel gas and sulfur from a hydrocarbon fuel
Assignee: Foster Wheeler Energy Corp
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Filing: 1976-11-19
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Granted: 1978-01-03
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Expires: 1996-11-19
Abstract
Abstract A process for producing a fuel gas and sulfur from a hydrocarbon fuel wherein a fuel oil containing sulfur is at least partially combusted in a fluidized bed of sorbent material which produces a substantially sulfur free fuel gas and a sulfided sorbent. The sulfided sorbent is passed to a second fluidized bed which regenerates the sulfided sorbent and produces a sulfur dioxide containing gas. The latter gas is contacted with granular coal in the presence of steam to reduce the sulfur dioxide to elemental sulfur.
Inventors
- 👤 Ernest L. Daman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:25
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/02; C01B17/04; C01B17/0473; C01B17/0482; C01B3/00; C01B3/02; C01B3/22; C01B3/24; C01B3/28; C01B3/32; C01B3/34; C01B3/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A process for producing a fuel gas and sulfur from a hydrocarbon fuel comprising the steps of establishing a first fluidized bed of sorbent material for the sulfur in said fuel, at least partially combusting said fuel in said bed under reducing conditions to produce a fuel gas and a sulfided sorbent, passing said fuel gas to the burners associated with a boiler, passing the combustion gases from said boiler to said fluidized bed, establishing a second fluidized bed, regenerating said sulfided sorbent in said second fluidized bed to produce regenerated sorbent and a sulfur containing gas, passing said sulfur containing gas into a reactor vessel, conveying a continuous supply of granular coal through said reactor vessel in contact with said sulfur containing gas under conditions to burn said coal and produce elemental sulfur, and passing the burned coal from said reactor vessel to said first fluidized bed to combust any unburned carbon present therein.
Claim 2
Dependent Claim
155 words
A process for producing a fuel gas and sulfur from a hydrocarbon fuel comprising the steps of establishing a first fluidized bed of sorbent material for the sulfur in said fuel, at least partially combusting said fuel in said bed under reducing conditions to produce a fuel gas and a sulfided sorbent, passing said fuel gas to the burners associated with a boiler, passing the combustion gases from said boiler to said fluidized bed, establishing a second fluidized bed, regenerating said sulfided sorbent in said second fluidized bed to produce regenerated sorbent and a sulfur containing gas, passing said sulfur containing gas into a reactor vessel, conveying a continuous supply of granular coal through said reactor vessel in contact with said sulfur containing gas under conditions to burn said coal and produce elemental sulfur, and passing the burned coal from said reactor vessel to said first fluidized bed to combust any unburned carbon present therein.
Claim 3
Dependent Claim
28 words
The method of claim 1, further comprising the step of mixing said sulfur containing gas with steam prior to said step of passing said gas to said vessel.
Claim 4
Dependent Claim
24 words
The process of claim 1, further comprising the step of passing the regenerated sorbent from said second fluidized bed to said first fluidized bed.
References Cited (Backward Citations)
GB1336563A
Cited
US3969089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |