Patent ID: 6544408
Filing Date: 2003-04-08
Classification: B01J,C10G

Abstract:
A reformimg process for the production of aromatic compounds, comprising moving a petroleum faction through at east a first and a last fixed bed of a catalyst containing at least platinum and at least 0.08% by weight of rhenium, wherein the fixed beds are arranged in at least one reactor, and before being introduced into the first fixed catalyst bed, the petroleum faction to be treated is heat exchanged with an effluent obtained from the last fixed catalyst bed, whereby the heat exchange is carried out with a pressure drop that is less than 1 bar for the petroleum faction and a temperature difference of the petroleum faction after heat exchange and the effluent prior to heat exchange of at most 70Â° C.; and the petroleum faction successively moves through at least two fixed catalyst beds that contain at least platinum and rhenium, and catalyst A of the first bed, in the direction of circulation of the petroleum faction, exhibits a ratio by weight of Re/Pt metals that is greater than the ratio by weight of the Re/Pt metals of catalyst B that is contained in the last bed for producing aromatic compounds.