Process for stabilizing the performances of a catalyst for...

B - Operations – Transporting – 01 – J

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B01J 23/75 (2006.01) C07C 1/06 (2006.01)

Patent

CA 2711056

Process for maintaining the stability of performances of a catalyst for Fischer-Tropsch reaction, performed in a slurry bubble column reactor under a triphase system, which comprises gradually increasing the P H20/P H2 ratio and the P H20/Z ratio, during the start-up phase, with Z = P0 .cndot.(T/T1)4 .cndot. e- (k2/(t.cndot.k3)) from 0.4 to 0.8, for a period of time not shorter than 100- 150 hrs and not longer than 200-300 hours and, at the end of the start-up phase, maintaining the P H20/PH2 and P H20/Z ratios substantially equal to or lower than 0.8.

L'invention porte sur un procédé pour maintenir la stabilité des performances d'un catalyseur pour une réaction de Fischer-Tropsch, effectuée dans un réacteur à colonne à bulles comprenant une bouillie sous un système triphasé, qui comprend les opérations consistant à augmenter progressivement le rapport PH20/PH2 et le rapport PH20/Z, pendant la phase de démarrage, avec Z = P0 (T/T1)4 e-(K2/(tK3)) de 0,4 à 0,8, pendant une période de temps non inférieure à 100-150 heures et non supérieure à 200-300 heures et, à la fin de la phase de démarrage, à maintenir les rapports PH20/PH2 et PH20/Z sensiblement égaux ou inférieurs à 0,8.

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