Journal of Petroleum & Environmental Biotechnology

The effect of rapeseed oil on the SRGO hydrotreating and ULSD production: Comparative study of CoMoS/Al2O3 and NiMoS/Al2O3 catalysts

3^rd World Congress on Petrochemistry and Chemical Engineering

November 30-December 02, 2015 Atlanta, USA

Galina A Bukhtiyarova1, Evgenia N Vlasova1,2, Pavel V Aleksandrov1 and Irina Deliy1,2

1Boreskov Institute of Catalysis, Russia 2Novosibirsk State University, Russia

Posters-Accepted Abstracts: J Pet Environ Biotechnol

Abstract:

One of the promising strategies for the production of fuels from the renewable is the co-processing of biomass-derived oil and petroleum fractions in the existing hydrotreating units. The scope of the present work is the comprehensive investigation of the CoMo/Al2O3 and NiMo/Al2O3 catalysts in the hydrotreating of the straight-run gasoil (SRGO) and their mixtures with rapeseed oil (RSO). The hydroprocessing of SRGO and blended feeds (5-15 wt.% of RSO) was carried out in the trickle-bed reactor. The quality of produced fuels (sulfur and nitrogen content, boiling range distribution, density and CI) was determined.The oxygen-containing compoundswereconverted completely in all experiments. Comparing HDS rate constants for the feed with different RSO content showed that RSO addition (up to 15 wt.%) decreased the activity of CoMoS/ Al2O3 catalysts but had no effect on the activity of NiMoS/Al2O3 one. The same dependencies were observed in HDN reaction. In accordance, over NiMoS/Al2O3 catalyst ULSD can be produced from SRGO and RSO-SRGO blend at the same conditions, while the temperature increase is needed if the CoMoS/Al2O3 catalyst is used for ULSD production from RSO-SRGO blends. The hydrodeoxygenation of RSO over sulfide catalysts gave paraffins, propane, water, CO, and CO2. It was observed in the special experiments that addition of CO to the hydrogen flow had the same effect on the HDS activity of the CoMo/Al2O3 and NiMo/Al2O3 catalysts as the addition of RSO to the SRGO. The feasible reasons of the observed differences between CoMo/ Al2O3 and NiMo/Al2O3 catalyst behavior will be discussed.

Biography :

Email: gab@catalysis.ru