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US 7,291,311 B2Granted
Process for controlling a moving bed combustion zone and its use
AssigneeInstitut Francais du Petrole
InventorEric Sanchez
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AssigneeInstitut Francais du Petrole
InventorEric Sanchez
Estimating the term…
Process for controlling the combustion zone of a fluidized bed process comprising a regeneration zone and a reaction zone, the catalyst circulating between these two zones, and the regeneration zone comprising a combustion stage of the coke deposited on the catalyst in the reaction zone, control of the combustion zone being performed on the basis of a characteristic variable of the operation of said combustion zone, said characteristic variable being the object of automatic regulation by acting on the catalyst throughput, characterized in that the value of the catalyst throughput or of any control variable connected unequivocally to the catalyst is determined based on information on the operating values of the combustion zone, at least one of which corresponds to an independent evaluation of the level of coke deposited on the catalyst.
A process for controlling the combustion zone of a moving bed process comprising a regeneration zone and a reaction zone, the catalyst circulating between these two zones, and the regeneration zone comprising at least one stage for combustion of the coke deposited on the catalyst in the reaction zone, said process comprising automatically adjusting a varying catalyst throughput in the combustion zone directly or indirectly in response to a characteristic variable of the operation of said combustion zone, wherein the value of the varying catalyst throughput or of any command variable connected with the catalyst throughput is determined based on data about the operating values of the combustion zone, at least one of which corresponds to an evaluation of the level of coke deposited on the catalyst.
A process for controlling the combustion zone of a moving bed process comprising a regeneration zone and a reaction zone, the catalyst circulating between these two zones, and the regeneration zone comprising at least one stage for combustion of the coke deposited on the catalyst in the reaction zone, said process comprising evaluating the level of coke deposited on the catalyst and in response to said level adjusting catalyst throughput in the combustion zone and said evaluating providing at least two independent evaluations of the level of coke deposited on the catalyst at substantially the same time, and comparing said estimates and if the estimates are consistent, the process is subjected to automatic control, but if inconsistent, the process is subjected to manual control.
Dependencies are inferred from the claim text.