Methods of upgrading hydrocarbon feed streams
AssigneeSaudi Arabian Oil Company
InventorsLianhui Ding, Saad Al-Bogami, Sameer A. Al-Ghamdi, Duhaiman Yami
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Abstract
This disclosure relates to methods of upgrading hydrocarbon feed stream, which can include separating the hydrocarbon feed stream into a heavy fraction and a light fraction, hydrotreating an aromatic feed stream with at least a first catalyst in a first reactor comprising hydrogen to produce a first product effluent, combining the heavy fraction with at least a portion of the first product effluent to form a mixed stream, and hydrotreating the mixed stream with one or more second catalysts in a second reactor comprising hydrogen to produce a second product effluent.
Claims20
A method of upgrading a hydrocarbon feed stream, the method comprising:
- separating the hydrocarbon feed stream into a heavy fraction and a light fraction;
- hydrotreating an aromatic feed stream with at least a first catalyst in a first reactor comprising hydrogen to produce a first product effluent;
- combining the heavy fraction with at least a portion of the first product effluent to form a mixed stream;
- and
- hydrotreating the mixed stream with one or more second catalysts in a second reactor comprising hydrogen to produce a second product effluent;
- wherein:
- the aromatic feed stream comprises greater than or equal to 50 wt. % aromatics;
- the aromatic feed stream comprises an oil selected from the group consisting of light cycle oil, coker gas oil, pyrolysis fuel oil, and combinations thereof;
- a liquid-hourly space velocity (LHSV) of the aromatic feed stream to the first catalyst in the first reactor is from 0.2 h−1 to 2.0 h−1;
- the first product effluent comprises less than 50 wt. % aromatics;
- and
- the first product effluent comprises greater than or equal to 20 wt. % naphthenes.
A method of upgrading a hydrocarbon feed stream, the method comprising:
- separating the hydrocarbon feed stream into a heavy fraction and a light fraction;
- hydrotreating an aromatic feed stream with at least a first catalyst in a first reactor comprising hydrogen to produce a first product effluent;
- combining the heavy fraction with at least a portion of the first product effluent to form a mixed stream;
- and
- hydrotreating the mixed stream with one or more second catalysts in a second reactor comprising hydrogen to produce a second product effluent;
- wherein:
- the aromatic feed stream comprises greater than or equal to 50 wt. % aromatics;
- the aromatic feed stream comprises light cycle oil;
- a liquid-hourly space velocity (LHSV) of the aromatic feed stream to the first catalyst in the first reactor is from 0.2 h−1 to 2.0 h−1;
- the first product effluent comprises less than 50 wt. % aromatics;
- and
- the first product effluent comprises greater than or equal to 20 wt. % naphthenes.
Dependencies are inferred from the claim text.