[jnull]

Hello,

I am currently modeling calcination (CaCO3 -> CaO + CO2) in a furnace that is heated by coal combustion. I have been having several problems with the simulation and getting results not matching with the data taken at the furnace (outlet temperature too high, calcination happening almost instantly [I examine this by displaying the mass fraction of the particles with pathlines])
Additionally, the specific heats of the raw-material that are displayed with pathlines are not matching what I am setting them to (both with constant Cp and piecewise polynomial).
I am running species transport model with volumetric and surface reactions. I did a cold flow initialization until all the initial volatiles propagated out of the system, then I turned dpm on every 100 iterations. I also made sure to adjust the specific heats of the constituent calcium oxide as a polynomial. I have been struggling with this problem for weeks and am out of ideas.
Does anyone have any suggestions for the erroneous outlet temperatures and reaction? I feel like it may be related to the specific heats?

Thank you

[ardismo]

Hello Jnull;

I just started to model coal combustion + calcination. But ı have no idea how to activate calcination reaction. Could you please give some tips ?For now Im not interested in validation of some data. I just need to see the calcination.

thank you in advance
Regards