March 2008

Bonus Report: Heat Transfer Developments

Consider heat integration to improve separation performance

Innovative approaches gain efficiency for distillation operations

Horiuchi, K. I., Iwakabe, K., Matsuda, K., Nakaiwa, M., Nakanishi, T., Institute of Advanced Industrial Science and Technology; Huang, K., Beijing University of Chemical Technology

Distillation columns are a mature unit operation; yet, this processing unit is characterized by a very low thermodynamic efficiency. New techniques combine internal heat integration to optimize distillation performance even under minimum reflux ratio conditions. Several presented examples discuss the improved operation efficiency by integrating heat transfer between the rectifying and stripping sections of a distillation column. Background. Among all the available methods to improve the performance of a conventional distillation column, fine-tuning internal heat integration between the rectifying and stripping sections can offer the highest energy savings.1–6 This is possible since te

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