US4266083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biomass liquefaction process
Assignee: Rust Engineering Co
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Filing: 1979-06-08
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Granted: 1981-05-05
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Expires: 1999-06-08
Abstract
Abstract This invention is directed to a process for the conversion of solid cellulosic biomass materials or lignite to oil. A solids-oil slurry is contacted in a reactor with carbon monoxide and water vapor in the presence of an alkali metal and alkaline earth metal carbonate, bicarbonate or formate catalyst at a temperature of from about 250° C. and to about 450° C. at a pressure of from about 2000 psig to about 5000 psig. The gases from the reactor and oil hydrocarbon fuel, preferably a recycled heavy fraction of product oil containing spent catalyst, are burned at a pressure above the reactor pressure with oxygen to provide a carbon monoxide-water vapor gas having a temperature of from about 1100°C. to about 1600° C. Said gas is introduced under the surface of the oil slurry in the reactor to provide heat, carbon monoxide, water vapor, and, desirably, regenerated catalyst to said reactor.
Inventors
- 👤 Max W. Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:50
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G1/083
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
151 words
In a process for the conversion of solid materials selected from the group consisting of cellulosic biomass materials and lignite to oil wherein a solids-oil slurry is contacted in a reactor with carbon monoxide and water vapor in the presence of a catalyst selected from the group consisting of alkali metal and alkaline earth metal carbonates, bicarbonates and formates at a temperature of from about 250° C. to about 450° C. and at a pressure of from 2000 psig to about 5000 psig the improvement wherein off-gases from the reactor and hydrocarbon fuel are burned with oxygen at a pressure above the reactor pressure to provide a carbon monoxide-water vapor gas having a temperature of from about 1100° C. to about 1600° C. and introducing said carbon monoxide-water vapor gas under the surface of the oil slurry in the reactor to provide heat, carbon monoxide, and water vapor to said reactor.
Claim 2
Dependent Claim
151 words
In a process for the conversion of solid materials selected from the group consisting of cellulosic biomass materials and lignite to oil wherein a solids-oil slurry is contacted in a reactor with carbon monoxide and water vapor in the presence of a catalyst selected from the group consisting of alkali metal and alkaline earth metal carbonates, bicarbonates and formates at a temperature of from about 250° C. to about 450° C. and at a pressure of from 2000 psig to about 5000 psig the improvement wherein off-gases from the reactor and hydrocarbon fuel are burned with oxygen at a pressure above the reactor pressure to provide a carbon monoxide-water vapor gas having a temperature of from about 1100° C. to about 1600° C. and introducing said carbon monoxide-water vapor gas under the surface of the oil slurry in the reactor to provide heat, carbon monoxide, and water vapor to said reactor.
Claim 3
Dependent Claim
28 words
The process of claim 1 wherein said hydrocarbon fuel burned with oxygen is, at least in part, a heavy fraction of reactor product oil which contains spent catalyst.
Claim 4
Dependent Claim
27 words
The process of claim 1 wherein said hydrocarbon fuel burned with oxygen is a heavy fraction of reactor product oil which contains spent catalyst and unreacted solids.
Claim 5
Dependent Claim
31 words
The process of claim 1 wherein the off-gases from the reactor, hydrocarbon fuel and oxygen are burned in a partial oxidation reactor which is located on top of the conversion reactor.
Claim 6
Dependent Claim
51 words
The process of claim 1 wherein the off-gases from the reactor, hydrocarbon fuel and oxygen are burned in a partial oxidation reactor which is located on top of the conversion reactor and flow into the conversion reactor through a conduit that passes downward through the solids-oil slurry in the conversion reactor.
Claim 7
Dependent Claim
41 words
The process of claim 1 wherein oil is removed from the conversion reactor, fractionated to remove water and desirable light oils and a slurry of spent catalyst in heavy oil is recycled and burned with off-gases from the reactor and oxygen.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein the solids-oil slurry is formed with a portion of product oil which has been hydrogenated.
Claim 9
Dependent Claim
121 words
The process of claim 1 wherein oil is removed from the conversion reactor and fractionated to provide water, desirable light oils and a heavy oil containing spent catalyst; said light oils are hydrogenated to provide a product oil and a recycle oil for the formation of the solids-oil feed slurry; at least a portion of said heavy oil containing spent catalyst is recycled to burn with said oxygen and said conversion reactor off-gases; a portion of said carbon monoxide-water vapor gas is subjected to a shift reaction to provide hydrogen for the hydrogenation of said light oils; and a portion of the carbon dioxide by product of said shift reaction is compressed and added to said reactor off-gas, oil oxygen combustion.
Claim 10
Dependent Claim
14 words
The process of claim 1 wherein the solid material is a cellulosic biomass material.
Claim 11
Dependent Claim
12 words
The process of claim 7 wherein the cellulosic biomass material is wood.
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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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |