Process and apparatus for contacting feed and catalyst with improved catalyst mixing
AssigneeUop LLC
InventorsRichard A. Johnson, II, Wolfgang A. Spieker, Mohammad-Reza Mostofi-Ashtiani
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Abstract
A process and reactor for contacting a feed stream with a catalyst stream comprises a reaction chamber comprising two spent catalyst inlets for delivering two spent catalyst streams to the reaction chamber and at least one regenerated catalyst inlet for delivering a regenerated catalyst stream to the reaction chamber. The reaction chamber may also include a second regenerated catalyst inlet for delivering a second regenerated catalyst stream to the reaction chamber. The second spent catalyst inlet enables thorough mixing of catalyst streams.
Claims20
A reactor for contacting a feed stream with a catalyst stream comprising:
- a reaction chamber;
- a first spent catalyst inlet for delivering a first spent catalyst stream to said reaction chamber, a second spent catalyst inlet for delivering a second spent catalyst stream to said reaction chamber, a feed inlet for charging feed to said reaction chamber;
- and a first regenerated catalyst inlet for delivering a first regenerated catalyst stream to said reaction chamber;
- and
- a separation chamber in communication with said reaction chamber and a product outlet for removing a product stream from said separation chamber.
A process for contacting a feed stream with fluidized catalyst comprising:
- charging said feed stream to a reactor;
- feeding a first spent catalyst stream to said reactor and feeding a second spent catalyst stream to said reactor;
- feeding a first regenerated catalyst stream to said reactor;
- contacting said feed stream with the first spent catalyst stream, the second spent catalyst stream and the first regenerated catalyst stream to produce a product gas stream and spent catalyst;
- and
- separating said product gas stream from said spent catalyst.
A process for contacting a feed stream with fluidized catalyst comprising:
- charging said feed stream to a reactor;
- feeding a first spent catalyst stream to said reactor;
- feeding a first regenerated catalyst stream to said reactor;
- mixing the first spent catalyst stream and the first regenerated catalyst stream such that at one spent catalyst pipe diameter above all catalyst inlets the temperature differential among catalyst in a cross section is no more than 20° C.;
- and
- contacting said feed stream with a mixture of the first spent catalyst stream and the first regenerated catalyst stream to produce a product gas stream and spent catalyst;
- and
- separating said product gas stream from said spent catalyst.
Dependencies are inferred from the claim text.