MODELLING AND SIMULATION OF A CRUDE OIL TOPPING COLUMN USING THE LIEBMANN’S DECOMPOSITION MODEL
Crude Oil distillation commonly referred to as refining has dominated world energy supply, discourse, politics and economy for a better part of one and a half century. All components of Petroleum have found one useful application or the other in contemporary world economy. There is thus a huge volume of research work and technological advances in Petroleum refining using basic theories of distillation. An elementary method of determining the number of stages of a Crude Distillation Unit (CDU) is the McCaby - Thiele's method. However, it is only applicable for binary distillation. This work is an application of the McCaby - Thiele's graphical method for multicomponent distillation using the Decomposition Model of Liebmann. The study established usefulness of the Liebmann's decomposition model as a simple analytical tool for multicomponent distillation against complex and more rigorous models. Results of the Model were compared with rigorous and complex models from ASPEN HYSYS simulation software v8.6. The number of Theoretical Stages from the Model were twelve while the number of Actual Stages from the software were fifteen which shows good agreement between them.