INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Estudio de las condiciones de regeneración en planta piloto de un catalizador industrial de hidrotratamiento (HDT) agotado
Autor/es:
D.A. LUCK; J.C. GONZALEZ; J.M. GRAU
Lugar:
Buzios, RJ, Brasil
Reunión:
Congreso; 15 º Congresso Brasileiro de Catálise -5º Congresso de Catálise do Mercosul; 2009
Institución organizadora:
Sociedad Brasileira de Catálise
Resumen:
A study was performed on the effect of the regeneration conditions of an industrial, coke-deactivated, HDS Ni-Mo/Al2O3 catalyst. Deactivation was performed in an industrial unit during an operation cycle. Catalysts were regenerated in a pilot unit fixed bed reactor. Air diluted in nitrogen was used as oxidizing mixture (0-5% concentration of oxygen). The selection of the most promising regeneration conditions was made by analyzing the final coke content, the relative recovery of the textural properties and the mechanical properties of the regenerated catalysts. In order to assess the recovery of the catalytic properties the HDS activity of the regenerated catalyst was compared against that of the fresh catalyst at reaction conditions of low and high severity. The obtained results indicate that a mild regeneration at 460°C totally eliminates the coke with no damage to the active sites of the supported Ni-Mo catalyst and with no deleterious effect on its mechanical properties.2O3 catalyst. Deactivation was performed in an industrial unit during an operation cycle. Catalysts were regenerated in a pilot unit fixed bed reactor. Air diluted in nitrogen was used as oxidizing mixture (0-5% concentration of oxygen). The selection of the most promising regeneration conditions was made by analyzing the final coke content, the relative recovery of the textural properties and the mechanical properties of the regenerated catalysts. In order to assess the recovery of the catalytic properties the HDS activity of the regenerated catalyst was compared against that of the fresh catalyst at reaction conditions of low and high severity. The obtained results indicate that a mild regeneration at 460°C totally eliminates the coke with no damage to the active sites of the supported Ni-Mo catalyst and with no deleterious effect on its mechanical properties.