The Crude Distillation Unit (CDU) is one of the most energy-intensive units of a refining process. A CDU consists of a distillation column, where the crude feed is separated into various components from lighter to heavier fractions before sending these fractions for further processing, and a preheat train and a furnace where the crude feed is heated up before entering the column. PIL's unique approach towards CDU optimization involves simultaneous optimization of the preheat train and the distillation columns, which gives us more opportunities for energy savings and yield improvement as compared to sequential optimization methods.
Our offline solutions are designed to propose operational guidelines to help our clients to maintain optimum operation even with crude feedstock variations and to overcome the unit constraints/bottlenecks. We also propose retrofit modifications to the preheat train and the column to help our clients to achieve higher energy recovery, higher furnace coil inlet temperature and better product separation in the column.
Operational optimization: The following key operational parameters are adjusted to bring savings (typically between 3-5% per year of current operating cost) without any investment:
Retrofit optimization: The following changes are done to your system set up to bring savings (typically between 5-15% per year of current operating cost) with low to medium CAPEX: