Operation of energy efficient divided wall column

Based upon the nominal design of a divided wall column, one obtains the minimum energy usage to achieve the desired separation. During operation, when the column is actually run, the vapor split ratio R-v is found to be non-optimal. For this and other reasons, it is likely that available energy is actually lower than the energy required for the separation of three products. The objective of this study, is to find how to operate the column under such conditions, such that we minimize the degradation in terms of the product purities. We also want to study how the column should be controlled under such conditions. For this analysis various simulations have been conducted and the effects on product compositions are examined.