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US 12,667,820 B2Granted
Process and apparatus for contacting feed and catalyst with improved fluid dynamics
AssigneeUop LLC
InventorsWolfgang A. Spieker, Richard A. Johnson, II
Life of this patent
Estimating the term…
Abstract
A process and apparatus comprise a reaction chamber that includes an aspect ratio between about 0.7 and 1.3 for establishing a dense catalyst bed in the reaction chamber while minimizing hot residence time of the product gas in a range that will not deteriorate product selectivity. We have found the dense catalyst bed is necessary to ensure sufficient contact between catalyst and feed gas.
Claims18
A reactor for contacting a feed stream with a catalyst stream comprising:
- a reaction chamber comprising a vertical wall and defining an inner diameter and a height;
- a catalyst inlet for delivering said catalyst stream to said reaction chamber, a feed inlet for charging feed to said reaction chamber;
- and a product outlet for removing a product stream from said reaction chamber;
- said reaction chamber including an aspect ratio between about 0.7 and about 1.3 for establishing a dense catalyst bed in the reaction chamber while minimizing hot residence time,
- a separation chamber in communication with said reaction chamber;
- and
- a recycle pipe with an inlet end connected to said separation chamber and an outlet end connected to said reaction chamber for recycling spent catalyst to said reaction chamber.
4 more elements
A process for contacting a feed stream with fluidized catalyst comprising:
- charging said feed stream to a reaction chamber having an aspect ratio of about 0.7 to about 1.3;
- contacting said feed stream with a catalyst stream to produce a product gas stream and spent catalyst;
- separating said product gas stream from said spent catalyst;
- and
- recycling said spent catalyst back to said reaction chamber.
2 more elements
A process for contacting a feed stream with fluidized catalyst comprising:
- charging said feed stream to a reaction chamber having an aspect ratio of about 0.7 to about 1.3;
- contacting said feed stream with a catalyst stream to produce a product gas stream and spent catalyst;
- separating said product gas stream from said spent catalyst;
- passing a portion of said spent catalyst back to said reaction chamber and another portion of said spent catalyst to a catalyst regenerator;
- and
- generating a dense catalyst bed in said reaction chamber of 1.5 m (5 ft) to 6 m (20 ft) tall.
3 more elements
Dependencies are inferred from the claim text.