Improved process and facility for the fixed-bed production...

C - Chemistry – Metallurgy – 10 – G

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C10G 35/09 (2006.01) B01J 8/02 (2006.01) B01J 8/04 (2006.01) C10G 59/02 (2006.01)

Patent

CA 2300508

Process for the production of aromatics, such as reforming, using at least one fixed bed of catalyst based on platinum with 0.08% rhenium. In the said process, before passing to the bed, the charge undergoes a thermal exchange with the effluent from the process, the exchange being effected with a loss of charge of less than 1 bar and a hot approach of under 70°C. Preferentially, the beds are radial and those located at the head of the reactor are covered with a layer of cloth. Preferentially the process uses at least 2 fixed beds of catalyst, the first bed (in the direction of travel of the charge) having a weight ratio Re/Pt greater than that of the second bed, the second catalyst containing preferentially at least 0.08% Re.

Procédé pour la production d'aromatiques, tel que le reformage, employant au moins un lit fixe de catalyseur à base de platine et de 0,08 % rhénium. Dans ledit procédé, avant de passer sur le lit, la charge subit un échange thermique avec l'effluent issu du procédé, l'échange étant réalisé avec une perte de charge inférieure à 1 bar et une approche chaude inférieure à 70°C. De préférence, les lits sont radiaux et ceux situés en tête de réacteur sont recouverts d'une couche de tissu. De préférence le procédé emploie au moins 2 lits fixes de catalyseur, le premier lit (dans le sens de la circulation de la charge) ayant un rapport pondéral Re/Pt supérieur à celui du second lit, le second catalyseur contenant de préférence au moins 0,08 % de Re.

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