Study of the Influence Exerted by Addition of Coker Gas Oil to Straight-Run Gas Oil on the Process of Hydrotreating in the Presence of CoMo/Al2O3 Catalyst


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

Behavior of the CoMo/Al2O3 catalyst was experimentally studied in the course of hydrotreating of a straight-run gas oil with high content of sulfur (>2 wt %) and its mixture (up to 30 wt %) with light coker gas oil in the temperature range 335–365°C and liquid hour space velocity of feedstock deliver of 0.8–2.5 h−1. It was shown that addition of gas oil to the straight-run gas oil in hydrotreating under the conditions corresponding to the working conditions of the existing domestic hydrotreating installations [L-24-5, L-24-6, L(Ch)-24-7] has oppositely directed effects, depending on temperature and feedstock delivery rate. For example, the additives lead in the temperature range 335–350°C to an increase in the content of sulfur in hydrotreating products. At a temperature of 365°C, better sulfur-related parameters are reached in processing of feedstocks containing light coker gas oil. The observed dependences are accounted for as follows: the dilution of the straight-run gas oil by addition of light coker gas oil leads to a decrease in the content of difficulty converted sulfur-containing compounds, but makes larger the content of nitrogen-containing compounds inhibitors of the hydrodesulfurization reaction, the influence of which on the reaction rate becomes weaker with increasing temperature.

About the authors

P. V. Aleksandrov

Boreskov Institute of Catalysis, Siberian Branch

Author for correspondence.
Email: aleksandrov@catalysis.ru
Russian Federation, Novosibirsk, 630090

G. A. Bukhtiyarova

Boreskov Institute of Catalysis, Siberian Branch

Email: aleksandrov@catalysis.ru
Russian Federation, Novosibirsk, 630090

S. I. Reshetnikov

Boreskov Institute of Catalysis, Siberian Branch

Email: aleksandrov@catalysis.ru
Russian Federation, Novosibirsk, 630090

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2019 Pleiades Publishing, Ltd.