A review on main challenges of hydrodesulfurization process for sulfur removal from fossil fuels

Document Type : Review

Author

Petroleum Refining Technology Development Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran

Abstract

Increasing usage of fossil fuels, is polluting environment with an ascending rate. In addition to carbon dioxide, using crude oil leads to emitting sulfur oxides, which in the environment leads to acidification of rainfall and soil and pollution of water resources, and in human can exacerbate heart and respiratory diseases. Moreover, presence of sulfur in petroleum refining is unpleasant since can lead to catalysis deactivation, corrosion of equipment, scale formation, etc. To decrease effects of these pollutants, in many countries environmental regulations are developed to reduce sulfur in petroleum products. The process which is currently used in refineries to reduce sulfur level is hydrodesulfurization. This technology at high temperature and pressure by using hydrogen and in presence of the catalysts, convert sulfur atom in organic compounds to hydrogen sulfide. However, hydrodesulfurization faces with many obstacles and challenges, which in this paper most important issues in this regards are addressed.

Keywords


 
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