TY - JOUR
T1 - An approach for achieving unstable convergence for non-isothermal continuous stirred tank reactors
AU - Subramanian, Jayakumar N.
AU - Mjalli, Farouq S.
PY - 2009
Y1 - 2009
N2 - The nonlinearity introduced by the temperature variation in the non-isothermal continuous stirred tank reactor (CSTR) exhibits concentration multiplicity for certain parameter ranges. The dynamics of reactor temperature under these conditions would be very difficult to observe and maintain. In this work, a novel algorithm is proposed to stabilize the system by designing a cascade of CSTRs that are capable of achieving this inaccessible steady state. Optimization of reactors parameters is performed in an iterative manner to achieve this solution. For a first-order reaction rate, this method was successful in achieving the inaccessible steady state temperature of 312.5 K using three CSTRs cascades. The suggested algorithm is presented both graphically as well as using computational optimization techniques. The transient simulation studies using the above three CSTRs showed that the unstable steady state is achieved. The newly designed cascade meets the design criteria and achieves the locally unstable steady state temperature to a high degree of accuracy.
AB - The nonlinearity introduced by the temperature variation in the non-isothermal continuous stirred tank reactor (CSTR) exhibits concentration multiplicity for certain parameter ranges. The dynamics of reactor temperature under these conditions would be very difficult to observe and maintain. In this work, a novel algorithm is proposed to stabilize the system by designing a cascade of CSTRs that are capable of achieving this inaccessible steady state. Optimization of reactors parameters is performed in an iterative manner to achieve this solution. For a first-order reaction rate, this method was successful in achieving the inaccessible steady state temperature of 312.5 K using three CSTRs cascades. The suggested algorithm is presented both graphically as well as using computational optimization techniques. The transient simulation studies using the above three CSTRs showed that the unstable steady state is achieved. The newly designed cascade meets the design criteria and achieves the locally unstable steady state temperature to a high degree of accuracy.
KW - Continuous stirred tank reactor
KW - Inaccessible steady state
KW - Locally unstable steady state
KW - Simulation
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U2 - 10.1002/ceat.200800184
DO - 10.1002/ceat.200800184
M3 - Article
AN - SCOPUS:65549122196
SN - 0930-7516
VL - 32
SP - 564
EP - 571
JO - Chemical Engineering and Technology
JF - Chemical Engineering and Technology
IS - 4
ER -