The Condensate Processing Unit is consist of three Distillation columns and two Stripper column i.e. Precut, Condensate splitter, Debutanizer, Kerosene Stripper and Gas Oil Stripper.
Condensate Precut
Condensate is fed through a series of preheat exchangers before entering a Precut Column. Pentanes and lighter components are distilled from the top of the column and are totally condensed in an air cooler before entering the reflux drum. The net overhead liquid is pumped to the Debutanizer and the remaining liquid is refluxed to the top of the Precut Column. The column pressure is controlled by a hot vapor by pass around the overhead condenser. The top reflux is on flow control.
The bottom of the column is reboiled by a fired heater, the firing of which is controlled by the bottom tray temperature. Hexanes and heavier components are distilled from the bottom of the column and fed to the Condensate Splitter.
Condensate Splitter
The bottoms product from the Precut Column is fed directly to the Condensate Splitter Reboiler. Heavy naphtha is distilled overhead and is totally condensed by an air cooler before entering the reflux drum. Heavy naphtha product is pumped to storage and the remaining portion is refluxed to the top of the column. A hot vapor by pass around the overhead condenser is used to control the column pressure, while the reflux stream is on flow control.
Kerosene is withdrawn from the side of the Condensate Splitter and fed to the top of the Kerosene Stripper.
Gas Oil is withdraw from the side of the Condensate Splitter and fed to the top of the Gas Oil Stripper.
The bottom of the Condensate Splitter is steam stripped and fuel oil product is withdrawn from the bottom of the column, cooled and pumped to storage.
Heavy naphtha and kerosene pump around stream remove heat from the Condensate Splitter by exchange with the cold condensate feed.
Kerosene Stripper
Kerosene from the Condensate Splitter is fed to the top of the Kerosene Stripper on level control and steam is injected in the bottom of the stripper. The steam strips the lighter hydrocarbons from the kerosene product and is flow controlled. The lighter hydrocarbons are returned to the splitter. The kerosene bottoms product is cooled by condensate feed, a kerosene air cooler, and a kerosene water trim cooler before being pumped to storage.
Gas Oil Stripper
Gas Oil from the Condensate Splitter is fed to the top of the Gas Oil Stripper on level control and steam is injected in the bottom of the stripper. The steam the lighter hydrocarbons from the gas oil product and is flow controlled. The lighter hydrocarbons are returned to the splitter. The kerosene bottoms product is cooled first by condensate feed and then cooling water before being pumped to storage.
Debutanizer
The light hydrocarbons from the Precut Column are fed to the Debutanizer. Butane and lighter is distilled overhead and condensed with cooling water before entering the reflux drum. The LPG is used as fuel gas and the remaining portion is refluxed to the top of the Debutanizer. The tower pressure is controlled by a blanket gas (fuel gas) on split range control and the reflux is on flow control.
The Debutanizer bottoms are reboiled by steam on temperature control. Enroute to storage, light naphtha product is cooled first by the debutanizer feed and then cooling water before being pumped to storage.
