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US 8,748,681 B2Granted
Process for oligomerizing dilute ethylene
AssigneeUop LLC
InventorsChristopher P. Nicholas, Alakananda Bhattacharyya, David E. Mackowiak
Life of this patent
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Abstract
The process and apparatus converts ethylene in a dilute ethylene stream that may be derived from an FCC product to heavier hydrocarbons. The catalyst may be an amorphous silica-alumina base with a Group VIII and/or VIB metal. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, hydrogen and ammonia. At least 40 wt-% of the ethylene in the dilute ethylene stream can be converted to heavier hydrocarbons.
Claims17
A process for oligomerizing ethylene comprising:
- providing a feed stream comprising between about 5 and about 50 wt-% ethylene, between about 25 and about 55 wt-% methane and at least one impurity selected from the group consisting of at least about 0.1 wt-% carbon monoxide, at least about 1 wppm hydrogen sulfide, at least about 1 wppm ammonia, at least about 5 wt-% hydrogen and at least about 0.1 wt-% carbon dioxide;
- contacting the feed stream with a catalyst comprising an amorphous silica-alumina base with a silica-to-alumina ratio of no more than 20 and a metal selected from the group consisting of Group VIII and Group VIB in the periodic table;
- and
- converting at least 40 wt-% of the ethylene in the feed stream to heavier hydrocarbons.
1 more element
A process for oligomerizing ethylene comprising:
- providing a feed stream comprising between about 5 and about 50 wt-% ethylene and between about 25 and about 55 wt-% methane;
- contacting the feed stream with a catalyst comprising amorphous silica-alumina base, a silica-to-alumina ratio of no more than 20 and 0.5 to 15 wt-% nickel;
- and
- converting at least 40 wt-% of the ethylene in the feed stream to heavier hydrocarbons.
1 more element
Dependencies are inferred from the claim text.