OPERATION AND CONTROL OF DIVIDING WALL DISTILLATION COLUMNS Part 2: Simulation and Pilot Plant Studies Using Temperature Control
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...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Institution of Chemical Engineers UK
1998
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| Subjects: | |
| 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/ |
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| Summary: | 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. |
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