Batch distillation control improvement by novel model predictive control

Weerachaipichasgul, Weerawun; Kittisupakorn, Paisan; Saengchan, Aritsara; Konakom, Kwantip; Mujtaba, Iqbal M.

doi:10.1016/j.jiec.2009.09.064

Cited by 9 publications

(3 citation statements)

References 13 publications

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“…The column is operated by the continuous method in a steady state after the startup period until it is closed. On the other hand, in batch mode, the column states change continuously over time resulting in non-linear and non-stationary [4].…”

Section: Introductionmentioning

confidence: 99%

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Constant distillate composition of batch distillation column with variable reflux mode based on still pot concentration

Alhaboubi

2022

STET

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The objective of this work is to control the constant distillate composition of batch distillation column xD. A new correlation developed involved the instant reflux ratio value R with a composition of the remaining mixture in the bottom pot (boiler) xB. Also adding the dynamic time as ahead time (+dt) to the control algorithm to increase the R to anticipate the changes in xD. +dt was calculated using an electroconductive tracer that was injected both in the bottom pot and in the top tray to estimate the upward and the downward dynamic time. The proposed correlation was successfully applied as a control strategy on a glass batch distillation pilot plant that has 5 cm diameter, 1 m long, eight sieve trays, and Methanol–Water mixture as a system. The real-time experimental runs of the suggested control algorithm applied by manipulating the reflux stream that affects the changes that happened in the top composition product to keep it constant. The proposed procedure shows a quick and stable response for distillate product composition during the operating time that minimizes and saves the energy supplied to the boiler. Moreover, the system gives a straight, smooth linear constant distillate product even in case of disturbing the system.

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Section: Introductionmentioning

confidence: 99%

“…In any case, they detailed that the ELO exactness was likely to degrade if the tray hydraulic was taken into account, and the observer was considered. The utilization of a stochastic estimator like a Kalman Filter (KF) was suggested when a lot of noise was expected [4].…”

Section: Introductionmentioning

confidence: 99%

Constant distillate composition of batch distillation column with variable reflux mode based on still pot concentration

Alhaboubi

2022

STET

View full text Add to dashboard Cite

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“…This statement of fact leads to the proposition of alternative controlled variable and a more suitable control algorithm to improve the process control and the global process efficiency. In this paper, due to its robustness and its successful implementation in numerous industries [26,27], an NMPC approach is presented to improve the process control, based on a setpoint tracking control. The crystal mass is used as controlled variable and the nonlinear predictive approach is used as control algorithm instead of the linear PID controller.…”

Section: Introductionmentioning

confidence: 99%