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US 10,399,075 B2Granted
FCC high efficiency partial burn regenerator
AssigneeUop LLC
InventorPaolo Palmas
Life of this patent
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Abstract
A process for combusting coke from catalyst in partial burn mode is disclosed. The partial burn regenerator runs deprived of oxygen such that the flue gas will contain a fair amount of carbon monoxide. The oxygen present in the flue gas can burn in the bed before reaching the dilute phase. The catalyst distributor is positioned in the upper chamber of the regeneration vessel for discharging the catalyst.
Claims19
A process for combusting coke from catalyst comprising:
- delivering coked catalyst to a lower chamber of a regeneration vessel;
- contacting coked catalyst with oxygen to combust coke from the coked catalyst in a partial burn mode;
- transporting catalyst and flue gas from the lower chamber to an upper chamber of the regeneration vessel through a first distributor into a dense catalyst bed in the upper chamber, wherein said first distributor discharges the catalyst from under a top surface of the dense catalyst bed in the upper chamber;
- supplying oxygen to the dense catalyst bed through a second distributor positioned below said first distributor;
- separating flue gas from regenerated catalyst in the upper chamber;
- discharging regenerated catalyst from said upper chamber;
- and
- discharging flue gas from said upper chamber.
5 more elements
A process for combusting coke from catalyst comprising:
- contacting hydrocarbon feed with catalyst to produce cracked products and coked catalyst;
- separating said cracked products from said coked catalyst;
- delivering said coked catalyst to a lower chamber of a regeneration vessel;
- contacting coked catalyst with oxygen to combust coke from the coked catalyst;
- transporting catalyst and flue gas from the lower to an upper chamber of the regeneration vessel through a first distributor into a dense catalyst bed in the upper chamber, wherein said first distributor discharges the catalyst from under a top surface of the dense catalyst bed in the upper chamber;
- contacting coked catalyst with oxygen discharged from a second distributor to combust coke from the coked catalyst in the dense catalyst bed of the upper chamber, said second distributor being positioned below said first distributor;
- separating flue gas from regenerated catalyst in the upper chamber;
- discharging regenerated catalyst from said upper chamber;
- and
- discharging flue gas from said upper chamber.
7 more elements
A catalyst regenerator vessel for combusting coke from catalyst comprising:
- a lower chamber having a catalyst inlet for feeding spent catalyst to said lower chamber and a gas distributor for distributing combustion gas to said lower chamber;
- an upper chamber having a catalyst distributor having an inlet in the lower chamber and an outlet in the upper chamber for distributing catalyst from said lower chamber to said upper chamber, said catalyst distributor being disposed in lower third of the upper chamber, wherein said distributor discharges catalyst from under a top surface of a dense catalyst bed in the upper chamber;
- a combustion gas distributor positioned below said catalyst distributor and configured to supply oxygen to the dense catalyst bed;
- a separator in communication with said regenerator vessel for separating flue gas from said catalyst;
- a flue gas outlet for discharging flue gas from said vessel;
- and
- a regenerated catalyst outlet for discharging regenerated catalyst from said vessel.
4 more elements
Dependencies are inferred from the claim text.