Process for combining the regeneratorless operation of tandem super-dense riser and fluid-bed oligomerization reactors containing a zeolite oligomerization catalyst
Patent
·
OSTI ID:6727647
This patent describes a catalytic process for upgrading a C{sub 2}{sup +} olefin feedstream to a heavier product stream rich in C{sub 10}{sup +} aliphatic hydrocarbons in first and second oligomerization zones. It comprises: contacting the olefin feedstream in the first zone with a finely divided medium pore size zeolite metallosilicate catalyst having a silica:alumina ratio grater than 12, and a constraint index in the range from about 1 to about 12, at a weight hourly space velocity (WHSV) sufficient to maintain a transport zone, and, then with essentially the same catalyst maintained as a fluid bed, the first zone containing riser catalyst having a higher coke content than that of catalyst in the second zone maintained in a turbulent regime.
- Assignee:
- Mobil Oil Corp., New York, NY (USA)
- Patent Number(s):
- A; US 4926003
- Application Number:
- PPN: US 7-422325A
- OSTI ID:
- 6727647
- Country of Publication:
- United States
- Language:
- English
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