Catalytic reforming process with dual reforming zones and split feed

摘要

A process for the conversion of paraffins and olefins in a hydrocarbon feedstream to aromatics is presented. The process includes separating the hydrocarbon feedstream into two separate streams, a lighter hydrocarbon stream and a heavier hydrocarbon stream, and processing each of the streams separately. The process includes passing the light stream through a series of reforming units and adding the heavy stream at a downstream position to pass through a subsequent reforming unit.

主权项

1. A process for converting a naphtha feedstream to aromatics, comprising:
passing the naphtha feedstream to a separation column, to generate a light overhead stream comprising C5− hydrocarbons, an intermediate stream comprising C6-C8 hydrocarbons, and a heavy naphtha bottoms stream comprising C8+ hydrocarbons; passing the intermediate stream to first reforming unit, comprising a first catalyst, to generate a first reforming effluent stream; passing the first reforming effluent to a second reforming unit, wherein the second reforming unit comprises a second catalyst, to generate a second reforming effluent stream; and passing the second reforming effluent stream and the heavy naphtha bottoms stream to a third reforming unit, wherein the third reforming unit comprises a third reforming catalyst, to generate a third reforming effluent stream.