Original scientific paper
https://doi.org/10.15255/CABEQ.2016.871
Influence of the Location of the Internal Temperature Control Loop on the Performance of the Dual Temperature Control for Feed Temperature Disturbance
C. Marangoni
; Federal University of Santa Catarina – Blumenau Campus, Rua Pomerode 710, Blumenau/SC, Zip Code 89065-300, Brazil
E. J. Zierhut
; University of Joinville Region, Chemical Engineering Department, Mail Box 246, Joinville/SC, Zip Code 89219-905, Brazil
I. G. B. Parisotto
; Federal University of Santa Catarina – Chemical Engineering Department, Mail Box 476, Florianópolis/SC, Zip Code 88040-900, Brazil
R. A. F. Machado
; Federal University of Santa Catarina – Chemical Engineering Department, Mail Box 476, Florianópolis/SC, Zip Code 88040-900, Brazil
A. Bolzan
; Federal University of Santa Catarina – Chemical Engineering Department, Mail Box 476, Florianópolis/SC, Zip Code 88040-900, Brazil
Abstract
A control strategy with distributed corrective action for distillation has been proposed and consists of a conventional dual temperature control combined with an additional column tray. In this work, we evaluated the influence of the location of this internal loop as part of the new proposal, compared to a conventional system. Tests were
carried out in a 13-column tray distillation equipment and feed temperature was disturbed. Two different column trays from the stripping section were used (11 and 12) for internal decentralized temperature control, each one separately, plus the dual control of
top and bottom temperatures. The results demonstrated that this proposed control approach with distributed corrective action is faster than the conventional one, regardless of the column tray in use. It was also determined that the internal loop close to the feed
(disturbance) is more interesting as a way to minimize transients.
Keywords
distillation; dynamics; distributed; dual control
Hrčak ID:
172287
URI
Publication date:
6.1.2017.
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