Title:
Continous process for biocatalyctic desulfurization of sulfur-bearing heterocyclic molecules
Document Type and Number:
WIPO Patent Application WO1992019700
Kind Code:
A3
Abstract:
A continuous cyclic process for desulfurizing a petroleum liquid which contains organic sulfur molecules, a significant portion of which are comprised of sulfur-bearing heterocycles. This process involves oxygenating the petroleum liquid and treating it with a biocatalyst capable of catalyzing the sulfur-specific oxidative cleavage of organic carbon-sulfur bonds in sulfur-bearing aromatic heterocyclic molecules such as dibenzothiophene. a particularly preferred biocatalyst is a culture of mutant Rhodococcous rhodocrous bacteria, ATCC No. 53968. In the present process, the activity of this biocatalyst is regenerated; it can be used for many cycles of treatment. A system for conducting the continuous cyclic process of biocatalytic desulfurization of petroleum liquids is also disclosed.
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Inventors:
MONTICELLO DANIEL J (US)
Application Number:
PCT/US1992/002856
Publication Date:
December 10, 1992
Filing Date:
April 08, 1992
Export Citation:
Assignee:
ENERGY BIOSYSTEMS CORP (US)
International Classes:
C10G32/00; C12N1/20; C12R1/01; (IPC1-7): C10G32/00; C12S1/02
Domestic Patent References:
| WO1992011343A1 | 1992-07-09 |
Foreign References:
| US4632906A | 1986-12-30 | |||
| US5002888A | 1991-03-26 | |||
| US2975103A | 1961-03-14 | |||
| EP0441462A2 | 1991-08-14 |
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