Method and system for catalytically converting oxygenates and regenerating and stripping catalyst
AssigneeUop LLC
InventorsJohn Senetar, Richard Johnson
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Abstract
A method of converting oxygenate-containing feedstock to light olefins comprises charging a reactor with catalyst, feeding the feedstock into the reactor, contacting the feedstock with the catalyst and converting the feedstock to olefins while depositing byproducts on catalyst resulting in spent catalyst, regenerating the spent catalyst by combustion gases, and stripping the regenerated catalyst of gases entrained in the regenerating step. The stripping step is accomplished using nitrogen gas to strip the entrained gases from the regenerate catalyst. In one embodiment, regenerated catalyst is passed through a regenerated catalyst stripper before it is returned to the reactor.
Claims19
A method of processing spent catalyst from an oxygenate-containing feedstock to olefins conversion process comprising:
- regenerating said spent catalyst;
- and
- stripping said regenerated catalyst of gases entrained during said regenerating step.
A method of converting oxygenate-containing feedstock to olefins comprising:
- charging a reactor with catalyst;
- feeding said oxygenate-containing feedstock into said reactor;
- contacting said oxygenate-containing feedstock with said catalyst in said reactor and converting said oxygenate-containing feedstock to said olefins while spending said catalyst;
- regenerating said spent catalyst by burning combustion gases;
- and
- stripping said regenerated catalyst of gases entrained in said regenerating step.
A system for regenerating spent catalyst used in converting oxygenate-containing feedstock to olefins, comprising:
- a catalyst regenerator vessel;
- and
- a regenerated catalyst stripper in said catalyst regenerator vessel having a regenerated catalyst inlet, a stripping gas distributor, and a stripped regenerated catalyst outlet.
Dependencies are inferred from the claim text.