Crude Distillation Unit (CDU) in Petroleum Industry

Abstract

The Crude Distillation Unit (CDU) provides primary separation of crude oil feedstocks: Crude oil is preheated against product and pump around streams before being routed to a fire heater. The primary fractionation is carried out in the main crude column fractionator and associated side stream strippers. Overhead naphtha is further processed in the naphtha stabilizer column. Products are cooled and rundown to intermediate storage or further processing as appropriate. Light gas oil and heavy gas oil streams are vacuum dried prior to rundown.