The project is based on the reconfiguration of feed preheat network in a Kero Hydro Desulphurization unit. This reconfiguration is beneficial as it does not require additional equipment to raise the feed temperature. Hydrodesulphurization is a catalytic process typically used in the Oil & Gas Refining industry to remove sulphur from natural gas and refined petroleum products. In the past, feed was charged from the Crude Distillation Unit at 103OC. Due to the shutdown of the CDU, the feed is now charged from storage tanks at a temperature of 40OC. This calls for a higher feed heater duty or a reduction in feed rate. This potential underutilization of the unit can impact the product supply from the refinery with negative financial implications. The objective is to preheat the feed at a temperature of 40OC to the existing feed temperature level of 103OC. The course of action was to configure the heat exchanger network of the unit in Aspen - Hysys as existing to validate the exchanger design with present operating condition and to reconfigure the same exchanger network and reroute the heating streams to maximise the feed temperature, whilst ensuring sufficient temperature availability at the fractionator inlet for the required performance. Based on the simulation study, the feed preheat network was successfully reconfigured as it raised the feed to the desired temperature level as well as reduced the charge heater duty while maintaining the required fractionator feed temperature at an optimum level.