Method for optimising the operation of a unit for the...

C - Chemistry – Metallurgy – 07 – C

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C07C 1/04 (2006.01) C10G 2/00 (2006.01)

Patent

CA 2669301

The invention relates to a method for optimising the operation of a reaction section for the synthesis of hydrocarbons from a stock containing a synthesis gas, the method being carried out in the presence of a cobalt-containing catalyst. The method includes the following steps: a) determining a theoretical molar ratio PH20:PH2 in the reaction section; b) optionally adjusting the ratio PH20:PH2 determined in step a) to a value strictly lower than 1; c) determining the new value of the theoretical molar ratio PH20:PH2 in the reaction section; and repeating steps a) to c) until the ratio PH20:PH2 between the water and hydrogen partial pressures has a value strictly lower than 1.1.

L'invention concerne une méthode pour optimiser le fonctionnement d'une section réactionnelle de synthèse d'hydrocarbures à partir d'une charge comprenant du gaz de synthèse, dans laquelle on opère en présence d'un catalyseur comprenant du cobalt. Cette méthode comprend les étapes suivantes : a) détermination du rapport molaire PH2O:PH2 théorique dans la section réactionnelle, b) ajustement éventuel du rapport PH2O:PH2 déterminé à l'étape a) à une valeur strictement inférieure à 1, c) détermination de la nouvelle valeur du rapport PH20:PH2 théorique dans la section réactionnelle, et répétition des étapes a) à c) jusqu'à ce que le rapport des pressions partielles d'eau et d'hydrogène PH2O:PH2 présente une valeur strictement inférieure à 1,1.

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