OPERATION AND CONTROL OF DIVIDING WALL DISTILLATION COLUMNS Part 2: Simulation and Pilot Plant Studies Using Temperature Control

• Main Authors: Abdul Mutalib , M I, Zeglam, A O, Smith , R
• Format: Article
• Language: English
• Published: Institution of Chemical Engineers UK 1998
• Subjects: TP Chemical technology
• Online Access: http://scholars.utp.edu.my/id/eprint/1454/1/Chem_Eng_Res_Des_1.pdf; http://scholars.utp.edu.my/id/eprint/1454/

This paper follows on from preliminary work to investigate the theoretical aspects of control of dividing wall columns in Part 1 of this paper. Two different control arrangements have been investigated using temperature control. Dynamic simulation was ® rst used to test the control con® gurations. These were then investigated in a large-scale pilot plant. The simulation and pilot plant runs show the same basic trends from the control arrangements. In all cases, the control arrangements investigated proved to give a stable response to ¯ uctuations in the feed to the column. Temperature control resulted in an off-set in one of the product purities. This was demonstrated in both simulation and practical runs. A procedure has been suggested to overcome this off-set by over-re¯ uxing the column. The procedure allows the column to be designed for minimum over-re¯ uxing.