Patent ID: 7094940
Filing Date: 2006-08-22
Classification: C07C,Y02P

Abstract:
1. An integrated process for the production of alkyl and alkenyl substituted aromatic compounds which comprises: a) feeding to an alkylation unit, a stream consisting of a C b) optionally mixing the stream leaving the alkylation unit, containing the alkylaromatic compound, with a stream consisting of a C c) feeding the stream of step (b) to a fluid bed dehydrogenation/regeneration unit containing a catalyst capable of dehydrogenating, also simultaneously, the alkyl hydrocarbon, optionally present, and the alkylaromatic compound; d) continuously discharging the exhausted catalyst which accumulates on the bottom of the dehydrogenation reactor and feeding it to the head of the regeneration reactor; e) continuously discharging the regenerated catalyst which accumulates on the bottom of the regeneration reactor and feeding it to the head of the dehydrogenation reactor; f) feeding the hydrocarbon stream leaving the dehydrogenation reactor to a separation section to produce a stream essentially consisting of the alkenyl substituted aromatic compound and a stream containing the alkenyl hydrocarbon; g) recycling the stream containing the alkenyl hydrocarbon to the alkylation unit; said integrated process being characterized in that the fluid for transporting the catalyst, which is deposited on the bottom of the regenerator at a temperature of 650–800° C., to the dehydrogenation reactor consists of a C