Dividing-wall column has lower investment and less energy consumption than conventional distillation technology.In this paper,the Platforming depentanizer bottom products of a petrochemical company are used as the feedstock,and the conventional de-C6 column and de-C7 column model and the dividing-wall column model are used for simulation calculations,respectively.The study shows that with the same feedstock and separation requirements,the reboiling load of dividing-wall column is reduced by about 30％compared with that of the conventional two columns,with an annual energy-saving economic benefit of 14.41 million yuan.At the same time,the dividing-wall column system has seven less equipment than the conventional two-column system,reducing the equipment purchase cost by 18.6％.In addition to equipment purchase cost,the dividing-wall column has less equipment,and the costs of equipment installation,civil structure and instrumentation are lower than those of the two-column process.More than 3 years of industrial operation experience in a petrochemical company fully verifies that dividing-wall column technology can meet the separation accuracy requirements of two-column process.Dividing-wall column has the advantages of easy control and smooth operation,and its product quality and other indicators are in line with the design requirements.
维普
万方数据