Integrated hydrogenation/dehydrogenation reactor in a platforming process

摘要

A process for reforming a hydrocarbon stream is presented. The process involves splitting a naphtha feedstream to at least two feedstreams and partially processing each feedstream in separate reactors. The processing includes passing the light stream to a combination hydrogenation/dehydrogenation reactor. The process reduces the energy by reducing the endothermic properties of intermediate reformed process streams.

主权项

1. A process for producing aromatic compounds from a hydrocarbon feedstream, comprising:
passing the hydrocarbon feedstream to a fractionation unit to generate an overhead stream comprising C7 and lighter hydrocarbons, and a bottoms stream comprising C8 and heavier hydrocarbons; passing the overhead stream to a hydrogenation/dehydrogenation reactor system and contacting with a hydrogenation/dehydrogenation catalyst consisting of a metal on an inert support to dehydrogenate naphthenes and hydrogenate olefins thereby generating a first stream having C6 and C7 aromatics with low olefin content, wherein the hydrogenation/dehydrogenation reactor system is operated at a temperature between 420° C. and 450° C.; passing the bottoms stream to a bottoms reforming unit, to generate bottoms reformate comprising aromatics; passing the first stream and the bottoms reformate to a substantially isothermal reactor system, thereby generating an aromatics stream wherein the isothermal reactor system is operated at a temperature greater than 540° C.; and passing the aromatics stream to a reformate splitter, to generate a reformate overhead stream comprising C7 and lighter aromatics and C7 and lighter paraffins, and a bottoms stream comprising C8 and higher hydrocarbons.