Nonlinear Observer Based Fault Diagnosis for an Innovative Intensified Heat-Exchanger/Reactor

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Abstract

This paper describes an application of a fault detection and isolation (FDI) scheme for an intensified Heat-exchanger (HEX)/Reactor, where the exothermic chemical reaction of sodium thiosulfate oxidation by hydrogen peroxide is performed. To achieve this, precise estimation of all states of HEX/Reactor, including temperatures and concentrations of different reactants, as well as process fault detection and isolation is completed by a high gain observer. Then, process fault identification is achieved by several banks of interval filters. Finally, an intensified HEX/reactor is used to validate the effectiveness of the proposed strategy. Simulation results are shown to illustrate the performance of the algorithm presented.

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Han, X., Li, Z., Dahhou, B., Cabassud, M., & He, M. (2020). Nonlinear Observer Based Fault Diagnosis for an Innovative Intensified Heat-Exchanger/Reactor. In Lecture Notes in Electrical Engineering (Vol. 582, pp. 423–432). Springer. https://doi.org/10.1007/978-981-15-0474-7_40

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