Application of pH control to a tubular flow reactor

doi:10.1016/j.cjche.2014.10.002

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (1): 145-161.DOI: 10.1016/j.cjche.2014.10.002

• 过程系统工程与过程安全 • 上一篇下一篇

Application of pH control to a tubular flow reactor

?. Halil Vural¹, Ayla Altinten², Hale Hapo?lu¹, Sebahat Erdo?an², Mustafa Alpbaz¹

1 Ankara University, Faculty of Engineering, Department of Chemical Engineering, Tandogan, Ankara 06100, Turkey;
2 Gazi University, Faculty of Engineering, Department of Chemical Engineering, Maltepe, Ankara 06570, Turkey

收稿日期:2013-02-22 修回日期:2013-10-08 出版日期:2015-01-28 发布日期:2015-01-24
通讯作者: Ayla Altinten

Application of pH control to a tubular flow reactor

?. Halil Vural¹, Ayla Altinten², Hale Hapo?lu¹, Sebahat Erdo?an², Mustafa Alpbaz¹

1 Ankara University, Faculty of Engineering, Department of Chemical Engineering, Tandogan, Ankara 06100, Turkey;
2 Gazi University, Faculty of Engineering, Department of Chemical Engineering, Maltepe, Ankara 06570, Turkey

Received:2013-02-22 Revised:2013-10-08 Online:2015-01-28 Published:2015-01-24
Contact: Ayla Altinten

摘要/Abstract

摘要： Tubular flow reactors are mainly used in chemical industry and waste water discharged units. Control of output variables is very difficult because of the existence of high dead-time in these types of reactors. In the present work, sodium hydroxide and acetic acid solutions were sent to the tubular flow reactor. The aim was to control pH at 7 in the nonlinear region. The pH control of a tubular flow reactor with high time delay and a highly nonlinear behavior in pH neutralization reaction was investigated experimentally in the face of the various load and set point changes. Firstly, efficiency of conventional Proportional-Integral-Derivative (PID) algorithm in the experiments was tested. Then self-tuning PID (STPID) control system was applied by using the ARMAX model. The model parameters were calculated from input-output data by using PRBS signal as disturbance and Bierman algorithm. Lastly, the experimental fuzzy control of pH based on fuzzy model was achieved to compare the success of fuzzy approach with the performance of other control cases studied.

关键词: Tubular flow reactor, pH control, Self tuning PID control, PID control, Fuzzy control

Abstract: Tubular flow reactors are mainly used in chemical industry and waste water discharged units. Control of output variables is very difficult because of the existence of high dead-time in these types of reactors. In the present work, sodium hydroxide and acetic acid solutions were sent to the tubular flow reactor. The aim was to control pH at 7 in the nonlinear region. The pH control of a tubular flow reactor with high time delay and a highly nonlinear behavior in pH neutralization reaction was investigated experimentally in the face of the various load and set point changes. Firstly, efficiency of conventional Proportional-Integral-Derivative (PID) algorithm in the experiments was tested. Then self-tuning PID (STPID) control system was applied by using the ARMAX model. The model parameters were calculated from input-output data by using PRBS signal as disturbance and Bierman algorithm. Lastly, the experimental fuzzy control of pH based on fuzzy model was achieved to compare the success of fuzzy approach with the performance of other control cases studied.

Key words: Tubular flow reactor, pH control, Self tuning PID control, PID control, Fuzzy control

İ. Halil Vural, Ayla Altinten, Hale Hapoğlu, Sebahat Erdoğan, Mustafa Alpbaz . Application of pH control to a tubular flow reactor[J]. Chinese Journal of Chemical Engineering, 2015, 23(1): 145-161.

İ. Halil Vural, Ayla Altinten, Hale Hapoğlu, Sebahat Erdoğan, Mustafa Alpbaz . Application of pH control to a tubular flow reactor[J]. Chin.J.Chem.Eng., 2015, 23(1): 145-161.

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Application of pH control to a tubular flow reactor

Application of pH control to a tubular flow reactor

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