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AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsFouad Ammouri, Jean Gallarda
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The invention relates to a method for controlling a hydrocarbon vapor reforming reaction using a combustion chamber containing burners and tubes, said tubes being filled with catalysts and capable of being crossed by a mixture of hydrocarbons and vapor, the burners being arranged so as to transfer their combustion heat to the mixture of hydrocarbons and vapor through the walls of the tubes, wherein the temperature T of the wall of each tube is measured in the downstream part of the tube, and if for at least one tube, the measured temperature is higher or equal to the MOT (DTT−15° C.), DTT being the design temperature of the measured tube, the functional parameters of the reforming method are then modified so as to decrease the measured temperature T of this tube down to a value lower than the MOT.
1-8. (canceled)
A method for controlling a hydrocarbon steam reforming process carried out in a combustion chamber comprising burners and tubes, the tubes being filled with catalyst and being capable of being passed through by a mixture of hydrocarbons and steam, the burners being positioned so as to transfer the heat from their combustion to the mixture of hydrocarbons and steam through the wall of the tubes, in which the wall temperature T of each tube is measured, preferably in the downstream part of the tube, wherein when, for at least one tube, the temperature measured T is greater than or equal to the maximum operating temperature of the tubes, then at least one operating parameter of the reforming process is modified so as to lower the temperature measured T of this tube to a value below the maximum operating temperature of the tubes equal to the design temperature of the tube −15° C.
Dependencies are inferred from the claim text.