Patent ID: 8900442
Filing Date: 2014-12-02
Classification: C07C,C10G

Abstract:
1. A process for increasing the aromatic content in a naphtha feedstream having olefins, naphthenes, paraffins, and aromatic in reforming reactors in a series, comprising: passing the naphtha feedstream to a charge heater to generate a first heated stream; passing a portion of the first heated stream to a first reforming reactor to generate a first effluent stream; passing the first effluent stream and a second portion of the first heated stream to a first reforming reactor interheater to generate a second heated stream; passing a first portion of the second heated stream to a second reforming reactor to generate a second effluent stream; passing the second effluent stream and a second portion of the second heated stream to a second reforming reactor interheater to generate a third heated stream; and passing a first portion of the third heated stream to a third reforming reactor to generate a third effluent stream to produce a product stream by converting paraffin and naphthenes in the naphtha feedstream through dehydrogenation and cyclization in the presence of added hydrogen, added sulfur compounds and a reforming catalyst in reforming reactors to aromatics; wherein the first reforming reactor is operated at a temperature between 400° C. and 500° C., and the second, third reforming reactors are operated at a second reaction temperature between 500° C. and 600° C., and wherein the second reaction temperature is greater than the first reaction temperature; wherein the reforming reactors are operated as successively greater temperatures.