Figure 1 ; process flow diagram of vegetable oil refinery The vegetable oil refinery plant under analysis is based on traditional tail-end technology, comprising two sections, chemical and physical sections. The chemical section is a section where the neutralization of oil is taking place (Batch) while the physical section is a section where bleaching and deodorization are taking place. The oil is first heated from 50°C to 110°C using the heat exchanger before the oil send to the bleacher after that then filtration follows; the temperature of the oil will reduce to 90 °C. The oil temperature will rise again from 90 °C to 200 °C using heat exchanger from there the oil will send to deodorizer where the temperature will increases to 230 °C. The top product will cooled from 180 °C to 50 °C while the bottom product will also cooled from 230 °C to 60°C as shown in the Figure 1