Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1985-08-29
1987-02-03
Hearn, Brian E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208111, 208112, 208 56, 208251H, 422222, C10G 4732, C10G 4734
Patent
active
046407650
ABSTRACT:
A method for cracking a heavy fraction oil is provided in which is solved a problem as to an increase in pressure loss due to coking in a cracking tower during the treatment of heavy fraction oils containing at least 1.0 wt. % of asphaltene. The cracking tower is vertically divided into at least two portions with a partition for housing a solid catalyst having a hydrogenation function, and the divided portions are communicated with each other at the upper and lower parts of the tower. A starting heavy fraction oil, a hydrogen donative solvent, and a hydrogen-containing gas are introduced into at least one of the divided portions at the lower part thereof, and further the fluid is circulated between the divided portions. Another method for cracking heavy fraction oils is provided in which a heavy hydrocarbon oil containing at least 1.0 wt. % of asphaltene is hydrogenated, a starting heavy fraction oil is cracked in the presence of at least one kind of a solid material selected from solid catalysts and porous solids and of a hydrogen donor, and at least 50 wt. % of heavy metals contained in the starting heavy fraction oil is ahdered to the solid material, and a reaction product mixture from the first step is separated from the solid material and then hydrogenated in the presence of hydrogen gas and a hydrogenating catalyst.
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Chaudhuri O.
Hearn Brian E.
Nippon Oil Co. Ltd.
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