Patent ID: 8882994
Filing Date: 2014-11-11
Classification: C10G

Abstract:
1. A process for reforming a hydrocarbon feedstream, comprising: passing the feedstream to a fractionation system to create a first overhead stream and a first bottoms stream wherein the first overhead stream has a reduced concentration of C8+ naphthenic compounds; passing the first bottoms stream to a first reformer reactor system, operated at a first set of reforming conditions to generate a first reactor effluent having an increased aromatic content, wherein the first set of reforming conditions includes a temperature between 400° C. and 480° C.; passing the first overhead stream and the first reactor effluent stream to form a second feed stream; passing the second feed stream to a second reforming reactor system operated at a second set of reforming conditions, thereby generating a second effluent stream, wherein the second set of reforming conditions includes a temperature greater than 540° C.; passing regenerated catalyst to the second reactor system, and generating a second reactor system catalyst effluent stream; passing the second reactor system catalyst effluent stream to the first reactor system, and generating a first reactor system catalyst effluent stream; passing the first reactor system catalyst effluent stream to a catalyst regenerator; passing the second effluent stream to a reformate splitter to generate a second overhead stream comprising C7 and lighter aromatics, and a second bottoms stream comprising C8 and heavier aromatics; and passing the second overhead stream to an aromatics recovery unit, thereby generating an aromatics product stream comprising benzene and toluene, and a raffinate stream comprising non-aromatic hydrocarbons.