Instituto Mexicano Del Petroleo

Jose Luis Cano Dominguez

Federico Jesus Jimenez Cruz

Maria Del Carmen Martinez Guerrero

Fidencio Hernandez Perez

Jose Luis Garcia Gutierrez

Georgina Cecilia Laredo Sanchez

J Jesus Castillo Munguia

Obet Marroquin De La Rosa

Ricardo Saint Martin Castanon

Maria Del Martinez Guerrero

Laura Olivia Aleman Vazquez

Maria Teresa Mares Gallardo

The present invention is related with the application of an adsorbent material of microporous carbon (MCA), prepared from the direct pyrolysis of copolymers generically known as Saran, in adsorption processes to reduce the benzene content in naphtha boiling range hydrocarbon streams, between 27 and 191&#xb0; C., in which is preferable to perform a first separation by distillation of the C6's fraction, and a further separation of Benzene by adsorption through an adsorbent material bed, obtaining the fraction of C6's free of Benzene and an adsorbent with Benzene, which is further regenerated by pressure or temperature swing desorption or by displacement using a desorbent such as an inert gas at high temperature or by passing a desorbent which after the process, the desorbent and Benzene are separated by distillation. The fraction of C6's free of Benzene is reintegrated to the hydrocarbon stream and providing a gasoline with a Benzene content less than 1 volume %. Besides, the application of the MCA in this type of process allows obtaining Benzene with a minimum purity of 99.8 weight % and a maximum toluene content of 0.1 weight %, satisfying the specifications of ASTM D-2359-02 for Refined Benzene-535.

Process for reducing benzene content of hydrocarbon stream using microporous carbon adsorbent

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Mexico City, Mexico

Jose Luis Cano Dominguez