Irreversible reaction

Ammonia liberation with milk of lime (distiller)

CaH2O2+2NH4ClCaCl2+2NH3+2H2O

Direction
Irreversible
Processes
1
Stated as
Fixed conversion
Heat of reaction
ΔH = 44,100 kJ/kmol (one process)
Element balance
Checked: balances
As the processes state itStoichiometry, conversions, heats of reaction and catalyst windows are taken from each process's files with their provenance. The build checks only that each process's equation balances in every element, from the process's own component formulas; it does not check the numbers. A process's design maturity applies to them.

Species

SpeciesNameCASRoleCoefficient
CaH2O2Calcium hydroxide1305-62-0reactant-1
NH4ClAmmonium chloride12125-02-9reactant-2
CaCl2Calcium chloride10043-52-4product1
NH3Ammonia7664-41-7product2
H2OWater7732-18-5product2

In the processes

  • Soda ash by the Solvay ammonia-soda process (1000 t/d light ash, concept)Concept · not reviewed

    DIST · Ammonia liberation with milk of lime (distiller)Ca(OH)2(s) + 2 NH4Cl(aq) → CaCl2(aq) + 2 NH3(g) + 2 H2O(l)

    Stated as
    Fixed conversion
    Phase
    mixed
    Element balance
    Balances in every element
    Conversion
    100 % of NH4Cl (assumed: D-006: fixed ammonia fully liberated with 5 % excess lime; the residual ammonia of the waste is set separately (1.5 kg/t))
    Heat of reaction
    ΔH = 44,100 kJ/kmol at 298.15 K, as written (assumed: formation enthalpies CaCl2(aq) -877.1, NH3(g) -45.9, H2O(l) -285.8, Ca(OH)2(s) -985.2, NH4Cl(aq) -299.7 kJ/mol (NBS tables, D-007))

Sources

What the processes cite for this reaction, each source once: for the reaction itself, its conversion, its heat of reaction or its catalyst. As the processes write them; DOIs, US patent numbers and web addresses are linked.

  1. D-006: fixed ammonia fully liberated with 5 % excess lime; the residual ammonia of the waste is set separately (1.5 kg/t)

    For the conversion · cited by Soda ash by the Solvay ammonia-soda process (1000 t/d light ash, concept)

  2. formation enthalpies CaCl2(aq) -877.1, NH3(g) -45.9, H2O(l) -285.8, Ca(OH)2(s) -985.2, NH4Cl(aq) -299.7 kJ/mol (NBS tables, D-007)

    For the heat of reaction · cited by Soda ash by the Solvay ammonia-soda process (1000 t/d light ash, concept)