Instituto Mexicano Del Petroleo

Georgina Cecilia Laredo Sanchez

J Jesus Castillo Munguia

Federico Jesus Jimenez Cruz

Maria Del Carmen Martinez Guerrero

Natalya Victorovna Likhanova

Rodolfo Juventino Mora Vallejo

Fidencio Hernandez Perez

Edith Meneses Ruiz

Ricardo Saint Martin Castanon

Obet Marroquin De La Rosa

Jose Luis Cano Dominguez

J Ascencion Montoya De La Fuente

Beatriz Zapata Rendon

Maria Del Martinez Guerrero

Bernando Rodriguez Heredia

Irina Victorovna Lijanova

The present invention is related to a selective adsorption process aimed at reducing the content of nitrogen organic compounds (NOC's) that is present in hydrotreating loads (HDT) for the production of ultra-low-sulfur diesel (ULSD below 15 ppm), which is carried out at ambient temperature, atmospheric pressure, without hydrogen, using adsorbing materials with organic metal structure MIL-101-Cr-M(MOF MIL-101-Cr-M), where Mcan be any metal cation such as Mg, Alor Ti. Likewise, the present invention considers the preparation of extrudates and the regeneration of the employed MOF adsorbent materials. In this sense, it is worth noting that the diesel HDT loads to which the present invention is referred to are hydrocarbon currents with distillation temperatures ranging from 150 to 400&#xb0; C. being preferably Straight Run Gasoil (SRGO), Light Cycle OIL (LCO) and Coker Gasoil (CGO), including their blends, but oil derived fuels can be included: gasoline, diesel and jet fuel, and other hydrocarbon currents obtained from the oil refining processes, which in turn are destined to be loads of the hydrodesulfurization process (HDS) for the production of ultra-low-sulfur diesel. According to the aforementioned, it is worth mentioning that the present invention process which is the selective adsorption process of nitrogen organic compounds is designed for the pretreatment of loads that enter the HDS process, which increases the catalyst lifespan and improves the economy of the HDS process.

Process for reducing the content of organic nitrogen compounds from hydrotreating feedstocks for ultra-low-sulfur diesel production

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

Georgina Cecilia Laredo Sanchez