The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2013
Filed:
Nov. 23, 2007
Georgina Cecilia Laredo Sanchez, Mexico City, MX;
J. Jesus Castillo Munguia, Mexico City, MX;
Fidencio Hernandez Perez, Mexico City, MX;
Ricardo Saint Martin Castanon, Mexico City, MX;
Maria Del Carmen Martinez Guerrero, Mexico City, MX;
Federico Jesus Jimenez Cruz, Mexico City, MX;
Obet Marroquin DE LA Rosa, Mexico City, MX;
Jose Luis Cano Dominguez, Mexico City, MX;
Georgina Cecilia Laredo Sanchez, Mexico City, MX;
J. Jesus Castillo Munguia, Mexico City, MX;
Fidencio Hernandez Perez, Mexico City, MX;
Ricardo Saint Martin Castanon, Mexico City, MX;
Maria del Carmen Martinez Guerrero, Mexico City, MX;
Federico Jesus Jimenez Cruz, Mexico City, MX;
Obet Marroquin de la Rosa, Mexico City, MX;
Jose Luis Cano Dominguez, Mexico City, MX;
Instituto Mexicano del Petroleo, Mexico City, MX;
Abstract
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° 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.