Chinese Academy of Sciences, China
Ming Xia has received BS (2009) degree in Pharmaceutical Engineering from Zhengzhou University and PhD (2014) degree in Chemical Engineering from Tianjin University. After graduation in 2014/07, he has joined in the Institute of Coal Chemistry, Chinese Academy of Sciences, where he is now a research associate. His research interests involve resources, particularly focusing on novel reactor research and development (Equipment), steady-state design and dynamic control (Process), and industrial scale-up (plant/factory level), with the help of simulated and experimental methods. At present, he is focusing on the scale-up of multi-tubular fixed-bed reactor for Fischer-Tropsch synthesis (100,000 t/a liquid hydrocarbon), and methanol downstream technology, such as acetic acid to acetone and acetic acid to ethanol etc.
Dividing-wall column is an important way to process intensification. For the past decades, more and more publications were focused on the design and control of dividing-wall column (including petlyuk) since it usually offers considerable energy saving and investment reduction. However, the past research emphasized ideal/zoetropic separation. This work aims to extend the dividing-wall column to azeotrope separation for energy and investment benefits, with special focus on design, optimization and control. Firstly, this work reviewed the past research on the design and control of dividing-wall column. Then a sequential design, optimization and control procedure for azeotropic/extractive dividing-wall column was presented on the basis of total annual cost (TAC) and effective control criteria. At last, several cases were utilized to demonstrate the benefit potentials of azeotropic/extractive dividing-wall column.
(a) (b) (c) (d)
Figure.1: Extractive dividing-wall column: (a) Integration scheme, (b) Equivalent scheme, azeotropic dividing-wall column, (c) Integration scheme and (d) Equivalent scheme