Topic summary
Hydrotreating
Extracted from the Wikipedia article Hydrodesulfurization.
An HDS unit in the petroleum refining industry is also often referred to as a hydrotreater and is the most common of the processing units found in a modern refinery. There are more than 1600 active hydrotreating units across more than 600 refineries globally with a combined capacity in excess of 400 million barrels (64,000,000 m) per day (including all forms of hydrotreating but excluding hydrocracking and reforming processes).