Monitoring of a biodiesel production process via reset observer

作者：Aguilar Garnica Efren^*; Paulo Garcia Sandoval Juan; Dochain Denis

来源：Journal of Process Control, 2016, 42: 104-113.

DOI：10.1016/j.jprocont.2016.04.001

• Software sensor
• Reset observer
• Esterification
• Biodiesel
• Grease trap wastes

This paper is concerned with the monitoring of a biodiesel production process, more specifically with the monitoring of the esterification of grease trap wastes, a low quality feedstock for biodiesel production typically characterized by its high content of Free Fatty Acids (FFAs). The esterification takes place in a jacketed Continuous Stirred Tank Reactor (CSTR). A reset observer is designed and applied in order to provide on-line estimation of the concentration of FFAs from temperature measurements within the CSTR. In addition, the proposed reset observer is compared to two other observers (classical fuzzy observer and extended Kalman filter). According to a multiple range test conducted for analyzing the estimation error, the monitoring task for the process under study has been better fulfilled by the reset observer which is able to update the estimation results every instant when the measurements were available.

• 出版日期2016-6