Abstract
The investigation of dynamic controllability of double liquid-only side-stream distillation (DLSD) is necessary due to its good potential for separating multicomponent mixtures in industrial practice. However, control strategy for DLSD is unique and complex owing to the existence of liquid side transfer streams. This study proposed three temperature control schemes without composition measurement for DLSD, i.e., single temperature control without feedforward structure (CS1), single temperature control and temperature difference control with feedforward structure (CS2 and CS3). Results demonstrate that DLSD process can be operated smoothly under ±20% feed flow rate and composition disturbances. The use of feedforward structure in CS2 and CS3 eliminates the transient deviations in the responses of product purities in CS1. Overall, CS3 provides better control for DLSD than CS1 and CS2 in terms of lower total sum of integral absolute error (by a factor of nearly 50 and 10, respectively).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
