DYNAMIC SIMULATION AND COMPOSITION CONTROL IN A 10 L MIXING TANK

Hermawan, Yulius Deddy and Haryono, Gogot (2012) DYNAMIC SIMULATION AND COMPOSITION CONTROL IN A 10 L MIXING TANK. REAKTOR: Chemical Engineering Journal, 14 (2). pp. 95-100. ISSN 08520798

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Abstract

The open loop experiment of composition dynamic in a 10 L mixing tank has been successfully done in laboratory. A 10 L tank was designed for mixing of water (as a stream-1) and salt solution (as a stream-2 with salt concentration, c2 constant). An electric stirrer was employed to obtain uniform composition in tank. In order to keep the liquid volume constant, the system was designed overflow. In this work, 2 composition control configurations have been proposed; they are Alternative-1 and Alternative-2. For Alternative-1, the volumetric-rate of stream-1 was chosen as a manipulated variable, while the volumetric-rate of stream-2 was chosen as a manipulated variable for Alternative-2. The composition control parameters for both alternatives have been tuned experimentally. The volumetric-rate of manipulated variable was changed based on step function. The outlet stream’s composition response (c3) to a change in the input volumetric-rate has been investigated. This experiment gave Proportional Integral Derivative (PID) control parameters. The gain controllers Kc [cm6/(gr.sec)] for Alternative-1 and Alternative-2 are -34200 and 40459 respectively. Integral time constant (tI) and Derivative time constant (tD) for both alternatives are the same, i.e. tI = 16 second, and tD = 4 second. Furthermore, closed loop dynamic simulation using computer programming was also done to evaluate the resulted tuning parameters. The developed mathematical model of composition control system in a mixing tank was solved numerically. Such mathematical model was rigorously examined in Scilab software environment. The results showed that closed loop responses in PID control were faster than those in P and PI controls.

Item Type: Article
Uncontrolled Keywords: closed loop; mixing tank; open loop; pid control; step function
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Dr Y. Deddy Hermawan
Date Deposited: 09 Jun 2021 03:37
Last Modified: 09 Jun 2021 07:24
URI: http://eprints.upnyk.ac.id/id/eprint/24877

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