Difficulties in the industrial introduction of new effective hydrodesulfurization catalysts in the Russian Federation

R.R Konoplin,N.K Kondrasheva,V.S Litvinenko

doi:10.1051/e3sconf/202126602016

Abstract

The article presents bibliographic knowledgeof the world-scaleinventions that formed the basis ofHDS-catalysts for the development of variousoil products. Extensive studies were conductedon optimizationof carrier properties, active-phase chemical-mass composition, and basictech-nological parameters of transformation of initial components into active six-sided MoS2 groups which are decorated by CoS2 molecules, involving stages of desulfurization ofoxide formsof the catalyst. Differences in the microstructure of Al2O3supportsderived from aluminum hydroxide of vari-ous genesis are described. Comparative possibilitiesof binding properties of aluminum hydroxide raw materials in laboratory tests and molding of-waterpeptidized pastesare presented.

Highlights

In the oil refining sphere, the catalytic hydrotreating processes, or the so-called refining of crude raw materials, are of paramount and fundamental importance, since they significantly reduce the content of the following out-of-tolerance impurities in the products
Due to the fact that the quality of oil produced in the world is constantly deteriorating, it is necessary to intensify hydrotreating processes and introduce highly effective catalysts
The conventionalinitialstep of the HDS process on the catalyst is the destruction of the C - S bond and the addition of hydrogen to the sitesof destruction in the molecule

Summary

Introduction

In the oil refining sphere, the catalytic hydrotreating processes, or the so-called refining of crude raw materials, are of paramount and fundamental importance, since they significantly reduce the content of the following out-of-tolerance impurities in the products (sulfur, nitrogen, oxygen, and the metals V, Ni). Mo and W are significantly less active in hydrogenating compared toNi and Co. the addition of these elements and their combination in the catalyst with Mo and W provides destruction of the organic molecule and hydrogenation in free bonds, i.e. bifunctional properties. The implementation of the last two conditions canbe achieved by using a supportthatallows reducing the content of the active component to anoptimum minimum due to the thinlayer distribution of Mo (W)-Ni (Co) metals and the required porous structuring. In this case,during the movement of reagents to the active centers of the catalyst, diffusion resistance will be completely absent or minimized. Analysis ofpublications on this topic allows us to trace the world’s developments and identify significant properties of the best modern industrial catalysts, as well as opportunities for their further improvement

Support

Catalyst

Results and discussion

Conclusion