A review on process intensification in internally heat-integrated distillation columns |
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| Affiliation: | 1. AkzoNobel – Research, Development & Innovation, Zutphenseweg 10, 7418 AJ Deventer, The Netherlands;2. Sustainable Process Technology Group, Faculty of Science and Technology, University of Twente, 7500 AE, Enschede, PO Box 217, The Netherlands;3. Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. National Engineering Research Center of Distillation Technology, Tianjin 300072, China;3. Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China;1. Computer Aided Process Engineering (CAPE) Laboratory, School of Chemical Engineering, Iran University of Science and Technology, Tehran 1684613114, Iran;2. Petroleum Refining Technology Division, Research Institute of Petroleum Industry, Tehran 1485733111, Iran;1. School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China;2. Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada;1. Department of Chemical Engineering, National Institute of Technology Calicut, Calicut, Kerala 673601, India;2. Advanced Propulsion Research Group, Vikram Sarabhai Space Centre, Thiruvananthapuram, Kerala 695022, India |
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| Abstract: | Internally heat-integrated distillation column (HIDiC) is the most radical approach of a heat pump design, making efficient use of internal heat-integration: the rectifying section of a distillation column operating at a higher pressure becomes the heat source, while the stripping part of the column acts as a heat sink. Remarkably, a HIDIC can bring up to 70% energy savings compared to conventional distillation columns. This is highly appealing regarding the fact that distillation is one of the most energy intensive operations in the chemical process industry accounting for over 40% of the energy usage. This review paper describes the latest developments concerning this promising but difficult to implement process intensification technology, covering all the major aspects related to the working principle, thermodynamic analysis, potential energy savings, various design configurations and construction options (ranging from inter-coupled or concentric columns, shell and tube and plate–fin heat exchanger columns to SuperHIDiC), design optimization, process control and operation issues, as well as pilot-scale and potential industrial applications. Further advancement, i.e., development of HIDiC technology for multi-component mixture separations is an extremely challenging research topic, especially when HIDiC becomes associated with other technologies such as dividing-wall column (DWC) or reactive distillation (RD). |
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| Keywords: | Heat pump Integrated distillation HIDiC VRC SRV SuperHIDiC Process intensification |
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