Effect of Thermal Conditions of Feed on Energy Consumption of Distillation

In this article effect of thermal conditions of feed on energy consumption of distillation is studied by simulation of Aspen Plus software and theoretical analysis.Results show that when feed rate and composition,products flow rate,number of plates,plate efficiency,reflux ratio are constant,separating power of column,flow rate of vapor and liquid in column change as change of feed condition.At cold feed separating power of column is stronger,but energy consumption is bigger.As reduction of parameter of thermal condition of feed q separating power of column is cut down,but energy consumption is also cut down.On condition requirement of separation can be met,column should be operated at less q to reduce energy consumption of distillation.