The continual increase in the global energy demand and the
decline in fossil fuel reserves provide motivation for energy conservation
in energy-intensive industrial processes. Different
methods are used to improve energy efficiency of industrial processes
such as the implementation of less energy-intensive technologies
and the use of waste heat recovery systems. The Crude
Distillation Unit (CDU) is among the largest energy consumers and
consequently a large CO2 emitters in industrial processes. It is
estimated that the energy required for the CDU is equivalent to