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US 2013/0252803 A1Published application
Process and apparatus for mixing two streams of catalyst
AssigneeUop LLC
InventorsDaniel R. Johnson, Paolo Palmas
Life of this patent
Estimating the term…
Abstract
A process and apparatus for mixing streams of regenerated and carbonized catalyst utilizes a ramp or bend provided on only one of the catalyst conduits to provide mixing advantages.
Claims20
A process for mixing two streams of catalyst comprising:
- feeding a first stream of catalyst to a riser in a first trajectory defining a first angle upwardly relative to vertical, said first stream of catalyst entering said riser at a first lowermost elevation;
- feeding a second stream of catalyst to said riser in a second trajectory defining a second angle upwardly relative to vertical that is greater than the first angle, said second stream of catalyst entering said riser at a second lowermost elevation that is lower than said first lowermost elevation;
- and
- passing said first stream of catalyst and said second stream of catalyst up said riser.
1 more element
A process for mixing two streams of catalyst comprising:
- feeding a first stream of catalyst to a riser in a first trajectory defining a first angle upwardly relative to vertical that is less than about 60 degrees;
- feeding at least a portion of a second stream of catalyst to said riser in a second trajectory defining a second trajectory angle upwardly relative to vertical that is greater than or equal to about 60 degrees;
- and
- passing said first stream of catalyst and said second stream of catalyst up said riser.
1 more element
A process for mixing two streams of catalyst comprising:
- directing all of a first stream of catalyst to a riser in a first trajectory defining a first trajectory angle upwardly relative to vertical;
- directing a portion of a second stream of catalyst to said riser in a second bottom trajectory defining a second bottom angle upwardly relative to vertical;
- directing another portion of said second stream of catalyst to said riser in another trajectory defining a second top angle upwardly relative to vertical, said second top angle being different from the second bottom angle;
- and
- passing said first stream of catalyst and said second stream of catalyst up said riser.
2 more elements
Dependencies are inferred from the claim text.