Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2006-02-21
2006-02-21
Griffin, Walter D. (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S213000, C208S057000, C208S058000, C208S059000, C422S149000, C422S198000, C422S198000, C422S198000, C422S198000
Reexamination Certificate
active
07001503
ABSTRACT:
A unit for hydrorefining of hydrocarbon crude oil comprising sulfur-containing compounds comprises first catalyst layer33and second catalyst layer38, top space34for separating vapor component and liquid component, bottom space36, and valve tray35that divides top space34and bottom space36. Hydrogen released from hydrogen nozzle40placed in the bottom space is passed through liquid component that has accumulated in the valve tray and stripping of liquid components is performed. Hydrogen released from hydrogen nozzle40is again introduced, to second catalyst layer38as a cocurrent with the stripped liquid component. By stripping, it is possible to reduce the sulfur content, the nitrogen content and reduce the aromatic content of the hydrocarbon crude oil when compared to the conventional method. Since the hydrorefining unit has a simple structure, the unit can be easily made by modifying existing units.
REFERENCES:
patent: 3091586 (1963-05-01), Pappas et al.
patent: 3159564 (1964-12-01), Kelley et al.
patent: 3652450 (1972-03-01), Boyd
patent: 3723300 (1973-03-01), Carson et al.
patent: 4430203 (1984-02-01), Cash
patent: 4695364 (1987-09-01), Graziani et al.
patent: 6036844 (2000-03-01), Gupta et al.
Koyama Hiroki
Takahashi Yuichi
Griffin Walter D.
Japan Energy Corporation
LandOfFree
Method and apparatus for stripping sulfur-containing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for stripping sulfur-containing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for stripping sulfur-containing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3641649