Process for increasing aromatics production

摘要

Processes for producing aromatics from a naphtha feedstream are provided. An exemplary process includes passing the feedstream to a fractionation unit, thereby generating a first stream including hydrocarbons having less than 8 carbon atoms and a second stream including hydrocarbons having at least 8 carbon atoms. The first stream is passed to a first reformer operated at a first set of reaction conditions to generate a first product stream. The first set of reaction conditions includes a first temperature and a first pressure. The second stream is passed to a second reformer operated at a second set of reaction conditions to generate a second product stream. The second set of reaction conditions includes a second temperature and a second pressure. The first pressure is lower than the second pressure.

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 hydrocarbons having less than 8 carbon atoms and a second stream comprising hydrocarbons having at least 8 carbon atoms; passing the first stream to a first reformer to generate a first product stream, wherein the first reformer is operated at a first set of reaction conditions and wherein the first set of reaction conditions includes a first temperature and a first pressure, wherein the first temperature is greater than 545° C. and the first pressure is less than 310 kPa; passing the second stream to a second reformer to generate a second product stream, wherein the second reformer is operated at a second set of reaction conditions, wherein the second set of reaction conditions includes a second temperature and a second pressure, wherein the first pressure is lower than the second pressure, wherein the second temperature is less than 540° C. and wherein the second pressure is less than 500 kPa; passing the first product stream and the second product stream to an aromatics separation unit; wherein the first set of reaction conditions and the second set of reaction conditions include contacting the feedstream with a catalyst, where the catalyst comprises a Group VIII noble metal on a support.