US4748289A
Expired / Lapsed
US
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Method and apparatus for catalytic processing of light hydrocarbons and catalysts for use therein
Assignee: STARMARK ENERGY SYSTEMS Inc 813 RIDGE BOULEVARD MEMPHIS TENNESSEE A DE CORP
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Filing: 1987-01-15
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Granted: 1988-05-31
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Expires: 2007-01-15
Abstract
Abstract A process and apparatus for converting light hydrocarbons, such as waste organic solvents, to a useful fuel having a high flash point. A mixture of light hydrocarbon and heavy oil, wherein the ratio of light hydrocarbon to heavy oil preferably lies in the range from about 10:1 to about 1:4, is forced at a pressure of preferably at least about 500 psi through a porous substrate having a catalytically effective amount of an active oxide of hexavalent group 6b metal, such as chromium, thereon. The porous substrate may comprise a sintered powder stainless steel material having an average pore size in the range from about 20 to about 2000 microns. The catalyst is prepared by wetting the porous substrate with a solution of a salt of the group 6b metal and heating the wetted substrate until a catalytically active oxide of hexavalent group 6b metal is formed thereon.
Inventors
- 👤 Allan S. Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:33
CPC Classifications
C; C10; C10G; C10G29/00; C10L; C10L1/00; C10L1/02; C10L1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A process for converting light hydrocarbon to a stable liquid fuel having a higher flash point than said light hydrocarbon comprising the steps of: (a) mixing controlled proportions of light hydrocarbon having an API gravity of at least 60°, a viscosity of not more than 200 SU at 100° F., and a flash point below 140° F. and heavy oil having an API gravity of not more than 45°, a viscosity of at least 140 FU at 122° F., and a flash point of at least 140° F.; (b) forcing the resulting mixture consisting essentially of said light hydrocarbon and said heavy oil under a pressure of at least about 500 psi through a porous substrate having an amount of a catalytically active oxide of hexavalent group 6b metal thereon effective to catalytically effect molecular rearrangements in at least one constituent of said mixture and produce a stable fuel which does not separate upon standing, and (c) collecting the resulting fuel.
Claim 2
Dependent Claim
161 words
A process for converting light hydrocarbon to a stable liquid fuel having a higher flash point than said light hydrocarbon comprising the steps of: (a) mixing controlled proportions of light hydrocarbon having an API gravity of at least 60°, a viscosity of not more than 200 SU at 100° F., and a flash point below 140° F. and heavy oil having an API gravity of not more than 45°, a viscosity of at least 140 FU at 122° F., and a flash point of at least 140° F.; (b) forcing the resulting mixture consisting essentially of said light hydrocarbon and said heavy oil under a pressure of at least about 500 psi through a porous substrate having an amount of a catalytically active oxide of hexavalent group 6b metal thereon effective to catalytically effect molecular rearrangements in at least one constituent of said mixture and produce a stable fuel which does not separate upon standing, and (c) collecting the resulting fuel.
Claim 3
Dependent Claim
19 words
A process according to claim 1, wherein said porous substrate is a porous material formed of sintered metal powder.
Claim 4
Dependent Claim
14 words
A process according to claim 2, wherein said metal powder is stainless steel powder.
Claim 5
Dependent Claim
26 words
A process according to claim 1, wherein said porous substrate has an average pore size lying in the range from about 40 to about 500 microns.
Claim 6
Dependent Claim
13 words
A process according to claim 1, wherein said group 6b metal is chromium.
Claim 7
Dependent Claim
33 words
A process according to claim 1, wherein said light hydrocarbon is a mixture of at least two substances selected from paraffins, monoalcohols, esters, aromatic compounds, ethers, glycols, ketones, turpentine, naphtha, and a gasoline.
Claim 8
Dependent Claim
30 words
A process according to claim 1, wherein said heavy oil is selected from the group consisting of residual oils, bunker C oil, heavy cutting oil, shale oil and crude petroleum.
Claim 9
Dependent Claim
25 words
A process according to claim 1, wherein the ratio of light hydrocarbon to heavy oil lies in the range from about 10:1 to about 1:4.
Claim 10
Dependent Claim
9 words
A fuel produced by the process of claim 1.
References Cited (Backward Citations)
US1416291A
Cited
US1938086A
Cited
US2549518A
Cited
US2968609A
Cited
US2916446A
Cited
US3000810A
Cited
US3328289A
Cited
US4000988A
Cited
US4318623A
Cited
US4299594A
Cited
US4382023A
Cited
US4579838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |