Irreversible reaction

Reduction of the blown-out excess chlorine by sulfur dioxide (T-202)

Direction: Irreversible
Processes: 1
Stated as: Fixed conversion
Heat of reaction: ΔH = -375,100 kJ/kmol (one process)
Heat of reaction: ΔH = -348,900 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

Species	Name	CAS	Role	Coefficient
Cl₂	Chlorine	7782-50-5	reactant	-1
SO₂	Sulfur dioxide	7446-09-5	reactant	-1
H₂O	Water	7732-18-5	reactant	-2
HCl	Hydrogen chloride	7647-01-0	product	2
H₂SO₄	Sulfuric acid	7664-93-9	product	1

In the processes

2 statements in one process: a process may state the reaction more than once (both ways, or at another scale).

Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)Concept · not reviewed
CLSA · Reduction of the blown-out excess chlorine by sulfur dioxide (T-202)Cl2(g) + SO2(g) + 2 H2O(l) → 2 HCl(aq) + H2SO4(aq)
Stated as
Fixed conversion
Phase
mixed
Element balance
Balances in every element
Conversion
100 % of Cl2 (assumed: D-005: the chlorine slip is reduced completely by the excess SO2)
Heat of reaction
ΔH = -375,100 kJ/kmol at 298.15 K, as written (assumed: Cl-(aq) -167.2, SO2(g) -296.8, H2O(l) -285.8, SO4(2-)(aq) -909.3 kJ/mol (NBS tables, D-007))
Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)Concept · not reviewed
CLSB · Oxidation of the excess SO2 of the bleed by chlorine (R-301)SO2(aq) + Cl2(g) + 2 H2O(l) → H2SO4(aq) + 2 HCl(aq)
Stated as
Fixed conversion
Phase
mixed
Element balance
Balances in every element
Conversion
100 % of SO2 (assumed: D-006: the dissolved SO2 is oxidised before the iodide)
Heat of reaction
ΔH = -348,900 kJ/kmol at 298.15 K, as written (assumed: SO2(aq) -323.0, Cl-(aq) -167.2, H2O(l) -285.8, SO4(2-)(aq) -909.3 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.

D-005: the chlorine slip is reduced completely by the excess SO2
For the conversion · cited by Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)
Cl-(aq) -167.2, SO2(g) -296.8, H2O(l) -285.8, SO4(2-)(aq) -909.3 kJ/mol (NBS tables, D-007)
For the heat of reaction · cited by Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)
D-006: the dissolved SO2 is oxidised before the iodide
For the conversion · cited by Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)
SO2(aq) -323.0, Cl-(aq) -167.2, H2O(l) -285.8, SO4(2-)(aq) -909.3 kJ/mol (NBS tables, D-007)
For the heat of reaction · cited by Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)