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How to use the saved aqueous solution+solids of the previous reaction to the nex

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Titanium:
Hi everyone:
I'm simulating the reaction of MgO with high concentration NH4H2PO4 solution. I want to calculate the carbonation products of the previous reaction after it reaching equilibrium. There is something wrong with my simulation, and I do not know why. I need your kind help.
SOLUTION 1
end
USE solution 1
REACTION
NH4H2PO4 1
5 moles
SAVE solution 1
END
INCREMENTAL_REACTIONS
USE solution 1
REACTION 1
MgO 1
10 mol in 10
EQUILIBRIUM_PHASES 1
MgO    0 0
MgHPO43H2O  0 0
MgNH4PO46H2O   0 0
(NH4)2Mg(HPO4)24H2O   0 0
END
USE solution 1
USE equilibrium_phase 1
USE reaction 1
SAVE SOLUTION 1
SAVE EQUILIBRIUM_PHASES 1
END

REACTION 2
    CO2(g)     1
    H2O(l)     2
    35 moles in 1000 steps
USE SOLUTION 1
USE EQUILIBRIUM_PHASE 1
USE REACTION 2
EQUILIBRIUM_PHASES 2
    Brucite   0 0
    MgO       0 0
    MgCO3:3H2O(Nesquehonite) 0 0
    MgHPO43H2O  0 0
    MgNH4PO46H2O   0 0
    (NH4)2Mg(HPO4)24H2O   0 0
SELECTED_OUTPUT 2
    -file                 MAPC.sel
    -equilibrium_phases   Brucite  MgO     MgCO3:3H2O(Nesquehonite) 0 0  MgHPO43H2O  MgNH4PO46H2O (NH4)2Mg(HPO4)24H2O

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