Hydrotreating typically involves the following steps:
The feedstock is mixed with hydrogen gas. The mixture is heated and passed through a reactor containing a solid catalyst. Under high pressure and temperature, the catalyst facilitates the breaking of bonds in sulfur, nitrogen, and oxygen compounds, allowing them to react with hydrogen to form hydrogen sulfide (H2S), ammonia (NH3), and water (H2O). The treated hydrocarbon stream is then separated from the gaseous by-products.
