Back to results
US 9,005,431 B2Granted
Process and apparatus for distributing hydrocarbon feed to a catalyst stream
AssigneeUop LLC
InventorsRoger L. Throndson, Paolo Palmas, Lev Davydov, Mohammad-Reza Mostofi-Ashtiani
Life of this patent
Estimating the term…
Abstract
A process and apparatus described is for distributing hydrocarbon feed to catalyst in a riser. Hydrocarbon feed is delivered to a plenum in the riser. Nozzles from the plenum inject feed into the riser to contact the catalyst. Streams of regenerated catalyst and carbonized catalyst may be passed to the riser and mixed around an insert in a lower section of a riser. The plenum may be located in the riser.
Claims16
A fluid catalytic process comprising:
- feeding a vaporous hydrocarbon feed stream to a plenum in a riser;
- feeding a first stream of catalyst and a second stream of catalyst to said riser to contact said hydrocarbon feed stream;
- passing said first stream of catalyst into a chamber in said insert to mix with said second stream of catalyst and passing said second stream of catalyst into said chamber to mix said first stream of catalyst;
- injecting said hydrocarbon feed stream from said plenum away from a radial center of said riser into said riser;
- and
- passing said hydrocarbon feed stream and said stream of catalyst up said riser.
3 more elements
A fluid catalytic process comprising:
- feeding a first stream of catalyst and a second stream of catalyst to a riser;
- passing said first stream of catalyst into a chamber in said insert to mix with said second stream of catalyst and passing said second stream of catalyst into said chamber to mix said first stream of catalyst to provide a mixed stream of catalyst;
- feeding a hydrocarbon feed stream to a plenum in said riser;
- injecting said hydrocarbon feed stream from said plenum into said riser;
- contacting said hydrocarbon feed stream with said mixed stream of catalyst;
- and
- passing said mixed stream of catalyst and said hydrocarbon stream up said riser.
4 more elements
A process for distributing hydrocarbon feed to a riser:
- feeding a first stream of catalyst and a second stream of catalyst to said riser;
- feeding a hydrocarbon feed stream to a plenum in said riser;
- passing said first stream of catalyst around an insert comprising said plenum to mix with said second stream of catalyst and passing said second stream of catalyst around said insert to mix with said first stream of catalyst and passing said first stream of catalyst into a chamber in said insert to mix with said second stream of catalyst and passing said second stream of catalyst into said chamber to mix said first stream of catalyst to provide a mixed stream of catalyst;
- injecting said hydrocarbon feed stream from said plenum into said riser;
- contacting said hydrocarbon feed stream with said mixed stream of catalyst;
- and
- passing said hydrocarbon feed stream and said mixed stream of catalyst up said riser.
4 more elements
Dependencies are inferred from the claim text.