Crude oil distillation is one of the most important processes in a refinery. A crude oil distillation unit (CDU) separates crude oil into different fractions according to their boiling ranges, providing feedstocks for downstream processes such as hydrotreating, catalytic cracking, and reforming. Because refinery configurations and crude feedstocks vary considerably, selecting the right distillation unit requires careful consideration of several technical and operational factors. https://www.purepathtech.com/petroleum-refineries/crude-oil-distillation-unit