Abstract
Abstract A conventional azeotropic distillation (AD) process is usually employed for separating the binary minimum-boiling azeotrope of furfural and water. This paper considers the design and control of the separation of furfural and water mixture via an azeotropic dividing wall column (ADWC). The rigorous simulation of the conventional AD process and the ADWC process are achieved using Aspen Plus software. The obstruction of industrialization of the dividing wall column (DWC) is because of the lack of experience, or fear of controllability and operability issues. In order to test the dynamic controllability of the ADWC process, a conventional PID control structure is proposed. Results show that the conventional PID control structure is able to handle the expected disturbances for the ADWC process. This extends the use of azeotropic distillation and dividing wall column. Besides, being a promising and practical process intensification technology, ADWC will increase energy savings in chemical industry.
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