Process and apparatus for distributing hydrocarbon feed and catalyst
AssigneeUop LLC
InventorSujay R. Krishnamurthy
Life of this patent
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Abstract
A process and apparatus for fluid catalytic cracking feeds catalyst to a chamber of a riser. The catalyst exits the chamber and passes through a plenum and into a reaction zone through a plurality of tubes which distribute the catalyst uniformly over a cross section of the reaction zone of the riser. A hydrocarbon feed is fed to the plenum. The hydrocarbon feed passes from the plenum into the reaction zone through a plate comprising a multiplicity of openings which distribute the hydrocarbon feed uniformly over a cross section of the reaction zone of the riser. The feed is contacted with the catalyst in a reaction zone of the riser.
Claims12
An apparatus for fluid catalytic cracking comprising:
- a riser;
- a reaction zone in said riser;
- an inner surface of said riser coated with a refractory material;
- a plate defining said reaction zone;
- a first opening in said plate for passing hydrocarbon feed to said reaction zone;
- a second opening in said plate for passing catalyst to said reaction zone;
- a fluidizing gas distributor;
- a catalyst inlet;
- a chamber in communication with said catalyst inlet and said fluidizing gas distributor;
- a feed inlet;
- a plenum in communication with said feed inlet and located between said chamber and said reaction zone;
- said plenum communicating with said reaction zone through said first opening;
- and
- a tube for communicating said chamber with said reaction zone through said second opening.
An apparatus for fluid catalytic cracking comprising:
- a riser;
- an inner surface of said riser coated with a refractory material;
- a chamber including an upper barrier;
- a plurality of openings in communication with said chamber, said openings spaced uniformly over the cross section of the riser;
- a plenum including a plate with a multiplicity of openings spread out uniformly over a cross section of said riser;
- a reaction zone in said riser in communication with said chamber and said plenum through said plurality of openings and said multiplicity of openings;
- and
- a plurality of tubes extending through said plenum to communicate said chamber with said reaction zone through said upper barrier;
- wherein said plenum is disposed between said chamber and said reaction zone.
An apparatus for fluid catalytic cracking comprising:
- a riser;
- an inner surface of said riser coated with a refractory material;
- a reaction zone in said riser;
- a fluidizing gas distributor;
- a catalyst inlet;
- a chamber in communication with said catalyst inlet and said fluidizing gas distributor;
- a plenum comprising a perforated plate in communication with a feed inlet;
- said chamber having a barrier from which a tube extends for communicating said chamber with said reaction zone;
- and
- said perforated plate including an opening in said plenum for communicating said plenum with said reaction zone, said plenum being defined by said barrier and said perforated plate.
Dependencies are inferred from the claim text.