Process for increasing aromatics production from naphtha

摘要

A process for reforming a hydrocarbon stream is presented. The process involves splitting a naphtha feedstream to at least two feedstreams and passing each feedstream to separation reformers. The reformers are operated under different conditions to utilize the differences in the reaction properties of the different hydrocarbon components. The process further includes passing one or more catalyst streams through the reformers to optimize selectivity and conversions.

主权项

1. A process for producing aromatics from a naphtha feedstream comprising:
passing the feedstream to a fractionation unit, thereby generating a first stream comprising light hydrocarbons, a second stream comprising intermediate hydrocarbons, and a third stream comprising heavy hydrocarbons; passing the first stream to a first reformer, operated at a first set of reaction conditions, thereby generating a first reformer effluent stream; passing the second stream to a second reformer, operated at a second set of reaction conditions, thereby generating a second reformer effluent stream; passing the third stream to a third reformer, operated at a third set of reaction conditions, thereby creating a third reformer effluent stream; passing the first reformer effluent stream and the second reformer effluent stream to a fourth reformer, operated at a fourth set of reaction conditions, thereby generating a fourth reformer effluent stream; passing the third reformer effluent stream and the fourth reformer effluent stream to a fifth reformer, operated at a fifth set of reaction conditions, thereby generating a fifth reformer effluent stream; passing the fifth reformer effluent stream to an aromatics extraction unit, thereby creating a purified aromatics stream and a raffinate stream.