Premium
Nonlinear Frequency Response Method for Evaluating Forced Periodic Operations of Chemical Reactors
Author(s) -
Petkovska Menka,
Nikolić Daliborka,
SeidelMorgenstern Andreas
Publication year - 2018
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.201700132
Subject(s) - isothermal process , nonlinear system , process (computing) , chemistry , inlet , mechanics , chemical reactor , flow (mathematics) , control theory (sociology) , process engineering , volumetric flow rate , biological system , nuclear engineering , mathematics , thermodynamics , mechanical engineering , computer science , engineering , physics , control (management) , quantum mechanics , artificial intelligence , biology , operating system
Nonlinear Frequency Response (NFR) method is a relatively new method which can be used for fast evaluation of possible process improvements through periodic operations. The method is analytical and approximate. Its main task is to give an answer whether periodic modulation of one or more process inputs can result in improved process performance. The method is explained in brief and an overview of the existing applications is given. The review covers simple reactions performed in isothermal and non‐isothermal stirred tank reactors exposed to different modulated inputs (inlet concentration, flow‐rate, inlet temperature, temperature of the heating/cooling medium). Processes with two simultaneously modulated inputs and different shapes of the periodic input are also considered. The results of the NFR method are compared with the results of numerical simulation and a critical evaluation of the method is given.