How to solve this problem
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After the simulation, the following problem occurred; how should it be solved? * WARNING AT Z = 0.19850E-05 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.42778E-05 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.63412E-05 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.94364E-05 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.14079E-04 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.21043E-04 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.31490E-04 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.47159E-04 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.70663E-04 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.10592E-03 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.15880E-03 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.23813E-03 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.35712E-03 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.53561E-03 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.80333E-03 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.12049E-02 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.18073E-02 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.27109E-02 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.40663E-02 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.60993E-02 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.91489E-02 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.13723E-01 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.20585E-01 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.30877E-01 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.46316E-01 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.69473E-01 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.10421 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.15632 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.23447 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.35171 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.52756 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.79134 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 1.1870 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 1.7805 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 2.6708 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 4.0062 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 6.0093 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 9.0139 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. Block: COOLER2 Model: HEATER Block: SEP2 Model: FLASH2 Block: REBOIL2 Model: HEATER Block: CLAUS2 Model: RPLUG * WARNING AT Z = 0.87000E-01 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 0.95700 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. * WARNING AT Z = 9.6570 : REACTION RATE IS GREATER THAN ZERO FOR REACTION (2) BUT REACTANT "COS" IS NOT PRESENT. POSSIBLE CAUSE: ZEROTH ORDER REACTANT NOT PRESENT. RATE IS SET TO ZERO. Block: COOLER3 Model: HEATER Block: SEP3 Model: FLASH2 Block: MIXER Model: MIXER ->Generating block results ... Block: COOLER1 Model: HEATER Block: REBOIL1 Model: HEATER Block: COOLER2 Model: HEATER Block: REBOIL2 Model: HEATER Block: COOLER3 Model: HEATER ->Simulation calculations completed ... * * * No Warnings were issued during Input Translation * * * * * * Summary of Simulation Errors * * * Physical Property System Simulation Terminal Errors 0 0 0 Severe Errors 0 0 0 Errors 0 0 0 Warnings 0 0 41
I’ve encountered it too; it hasn’t been resolved yet. It seems to be a problem with the dynamic parameters
I’ve encountered it too; it seems to be a dynamics issue that hasn’t been resolved yet.
The warning indicates that the reactor process isn’t yet complete – one of the reactants has been used up. There seems to be an issue with the kinetic parameters; check whether the units are correct
Hello, I would like to ask if there are any other solutions?