Kristanto, Dedy and Hermawan, Yulius Deddy (2020) Comparative Analysis between PI Conventional and Cascade Control in Heater-PFR-Series. REAKTOR: Chemical Engineering Journal, 20 (3). pp. 129-137. ISSN 08520798
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2. REAKTOR Jurnal Artikel 4 September 2020 Kristanto et al.pdf Download (1MB) | Preview |
Abstract
The processes of heater-reactor-series are often used in the chemical process industries. Since the reactor outlet
temperature increases as a result of the exothermic reaction, this temperature needs to be maintained below the upper
temperature limit in order to reduce the formation of by-product and to prevent fouling in the next process heat
exchangers. The goals of this work are to propose the new cascade controller and to compare with the previous
Proportional-Integral (PI) controller in heater-plug-flow-reactor-series (Heater-PFR-series) to produce benzene
through the reaction of hydrodealkylation of toluene (HDA). The three control models will be discussed in this paper.
Model A is the previous PI controller to keep the reactor inlet temperature, model B is the new PI controller to maintain
the reactor outlet temperature, and model C is the new Cascade controller to keep both reactor outlet and inlet
temperatures. The main disturbance of feed flowrate was made to examine the three control models. The three control
models were rigorously examined in UniSim Design R451. The PI control parameters were tuned by using “autotuner”
mode of UniSim. As shown in dynamic simulation study, the three control models with its tuning parameters gave the
fast and stable responses. Integral of the absolute value of the error (IAE) at the reactor outlet temperature for model A,
B, and C are 3305, 2487, and 931
C, respectively. This study revealed that model C (Cascade) acted very well to the
main disturbance change in feed flowrate, responses of model C were better and faster than those in A and B.
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Keywords: cascade control; dynamic simulation; PFR; PI conventional; UniSim
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Keywords: cascade control; dynamic simulation; PFR; PI conventional; UniSim |
| Subjek: | Q Science > Q Science (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eny Suparny |
| Date Deposited: | 04 Nov 2020 05:43 |
| Last Modified: | 04 Nov 2020 05:43 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/23843 |
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