초록 ▼

A catalytic reforming process comprises a prereactor which provides an intermediate stream to a riser reactor with multiple catalyst injection points to obtain high aromatics yields from a naphtha feedstock. Product from the riser reactor typically is discharged into a fluidized-bed reforming reacto

A catalytic reforming process comprises a prereactor which provides an intermediate stream to a riser reactor with multiple catalyst injection points to obtain high aromatics yields from a naphtha feedstock. Product from the riser reactor typically is discharged into a fluidized-bed reforming reactor, in which the reforming reaction is completed and catalyst is separated from hydrogen and hydrocarbons. Hydrocarbons from the reactor are separated to recover an aromatized product. Catalyst is regenerated to remove coke and reduced for reuse in the reforming process.

대표청구항 ▼

[ We claim:] [1.] A process for the catalytic reforming of a hydrocarbon feedstock to obtain an aromatized product comprising the steps of:(a) contacting the hydrocarbon feedstock with a prereactor catalyst comprising a supported platinum-group metal in a prereactor zone, comprising one or more reac

[ We claim:] [1.] A process for the catalytic reforming of a hydrocarbon feedstock to obtain an aromatized product comprising the steps of:(a) contacting the hydrocarbon feedstock with a prereactor catalyst comprising a supported platinum-group metal in a prereactor zone, comprising one or more reactors selected from the group consisting of fixed-bed and moving-bed reactors, at prereactor conditions and heating effluent from the reactors to obtain a prereacted intermediate stream;(b) charging the prereacted intermediate stream to a riser reactor, introducing regenerated reforming-catalyst particles and transporting the feedstock and catalyst particles upwardly through the riser reactor at primary reforming conditions and thereby converting the feedstock to obtain a riser vapor product stream and produce spent catalyst particles by the deposition of coke on the catalyst particles;(c) withdrawing the riser vapor product stream from the riser reactor and recovering the aromatized product; and,(d) transferring the spent catalyst particles to a regeneration zone and contacting the catalyst particles with a regeneration gas to remove at least a portion of the carbonaceous material from the catalyst and obtain regenerated reforming-catalyst particles.