what is hydrotreating
Hydrotreating, formally known as hydrodesulfurization (HDS), is a chemical process used on natural gas and refined petroleum. The aim of this process is to decrease the amount of sulfur in the petroleum by increasing the amount of hydrogen in the product.d. In hydrotreating, hydrogen is introduced into a mixture to increase the overall hydrogen count. Petroleum undergoes what is specifically called hydrogenolysis. This is when the carbon and sulfur bond contained within petroleum is split, and a hydrogen atom is linked to both the carbon and the sulfur atom.