METHOD FOR PRODUCING AROMATIC COMPOUNDS IN MOBILE BED COMPRISING CATALYST REDUCTION

The invention concerns a method for producing aromatic compounds in catalyst mobile bed comprising at least a first step which essentially consists in the dehydrogenation of naphthenes in the presence of hydrogen in a molar ratio (H2)1 HC, followed by at least a subsequent step performed with a molar ratio (H2)2 (HC)2; the method further comprises catalyst reduction by hydrogen in a ratio (H2)Red (HC), and the invention is characterised in that (H2)1 (HC) plus; (HC)Red (HC) le; (H2)2 (HC)2; (HC) representing the molar amount of charge in the first step and (HC)2 that in the subsequent step, or (H2)1 (HC) plus; (H2)Red (HC) gt; (H2)2 (HC)2 but with (H2)1 (HC) less than (H2)2 (HC)2. The invention is useful in particular for reforming. La invencion es concerniente con un metodo para producir compuestos aromaticos en lecho movil catalitico que comprende por lo menos una primera etapa que consiste esencialmente de la deshidrogenacion de naftenos en presencia de hidrogeno en una relacion molar (H2)2/HC, seguida por al menos una etapa subsecuente llevada a cabo con una relacion molar (H2)2/(HC)2; el metodo comprende ademas una reduccion catalitica mediante hidrogeno en una relacion (H2)Red/ (HC) y la invencion esta caracterizada porque (H2)1/(HC)+(HC)Red/ (HC)=(H2)2/ (HC)2; (HC) representa la cantidad molar de carga en la primera etapa y (HC)2 aquella en la etapa subsecuente o (H2)l/(HC)+(H2)Red/(HC)> H2)2/ (HC)2 pero con (H2)1/HC) menor que (H2)2/(HC)2. La invencion es util en particular para la reformacion.