Modeling and Simulation of a Divided Wall Column for 1,3 Butadiene Purification

The distillation process remains as the most common method of separation in chemicalprocess industries. the energy used from this process accounts for an estimated 3% ofthe world energy consumption. the dividing-wall column (dwc) for separation ofmulti-component mixtures has recently become a major concern ofindustries. the designof dwc is based on thermally coupled distillation system (tcds) eliminating some ofthe operational equipment. this paper presents the results of simulation of a dwc byusing 3-simple sequence column model based on shortcut method by a commercialchemical engineering software for purification of 1,3 butadiene unit.from the results, it is shown, by using a dwc instead of two conventional sequentialcolumn, the heat duties of both the condenser and the reboiler are reduced about 28.5%and also desirable purity of the key-components for the case of study have been achieved.