Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1982-12-27
1985-06-04
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208102, 208 48R, C10G 6510
Patent
active
045212953
ABSTRACT:
A process for high hydroconversion of petroleum residua containing at least about 25 V % material boiling above 975.degree. F. to produce lower boiling hydrocarbon liquid products and avoid undesirable precipitation of asphaltene compounds. In the process, the feedstock is at least about 80 percent catalytically hydroconverted to material boiling below 975.degree. F. and containing a mixture of gas and liquid fractions, after which the gas fraction is removed while maintaining the resulting liquid fractions temperature above about 730.degree. F. to avoid precipitation of asphaltene compounds which causes operations difficulties in the downstream equipment. Alternatively, the pressure-reduced liquid fraction can be stripped of material boiling below about 650.degree. F. before cooling the liquid to a temperature below about 730.degree. F. to prevent such precipitation of asphaltene compounds in the downstream equipment. The resulting liquid fraction is distilled to produce hydrocarbon liquid products, and a vacuum bottoms fraction is recycled to the catalytic reaction step to obtain increased percent conversion to lower boiling liquid products.
REFERENCES:
patent: 1974057 (1934-09-01), Steffen et al.
patent: 3215617 (1965-11-01), Burch et al.
patent: 3224959 (1965-12-01), Schlinger et al.
patent: 3842122 (1974-10-01), Wolk et al.
Chervenak Michael C.
Eccles Richard M.
Nongbri Govanon
Chaudhuri O.
Gantz Delbert E.
HRI Inc.
Wilson Fred A.
LandOfFree
Sustained high hydroconversion of petroleum residua feedstocks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sustained high hydroconversion of petroleum residua feedstocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sustained high hydroconversion of petroleum residua feedstocks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-827477