Irreversible reaction

Liberation of iodine from the recycled hydriodic acid (R-101)

Direction: Irreversible
Processes: 1
Stated as: Fixed conversion
Heat of reaction: ΔH = -201,300 kJ/kmol (one process)
Heat of reaction: ΔH = -223,900 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
HI	Hydrogen iodide	10034-85-2	reactant	-2
Cl₂	Chlorine	7782-50-5	reactant	-1
HCl	Hydrogen chloride	7647-01-0	product	2
I₂	Iodine	7553-56-2	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
OXH1 · Liberation of iodine from the recycled hydriodic acid (R-101)2 HI(aq) + Cl2(g) → 2 HCl(aq) + I2(aq)
Stated as
Fixed conversion
Phase
liquid
Element balance
Balances in every element
Conversion
98 % of HI (assumed: D-004: as OXI, the same end point)
Heat of reaction
ΔH = -201,300 kJ/kmol at 298.15 K, as written (assumed: as OXI (the same ionic reaction; NBS tables, D-007))
Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)Concept · not reviewed
OXH2 · Precipitation of iodine from the absorber bleed by chlorine (R-301)2 HI(aq) + Cl2(g) → 2 HCl(aq) + I2(s)
Stated as
Fixed conversion
Phase
mixed
Element balance
Balances in every element
Conversion
99.5 % of HI (assumed: D-006: chlorine dosed to an end point short of over-chlorination (which would form iodine monochloride); 0.5 % of the HI ASSUMED left)
Heat of reaction
ΔH = -223,900 kJ/kmol at 298.15 K, as written (assumed: I-(aq) -55.2, Cl-(aq) -167.2, I2(s) 0 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-004: as OXI, the same end point
For the conversion · cited by Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)
as OXI (the same ionic reaction; 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: chlorine dosed to an end point short of over-chlorination (which would form iodine monochloride); 0.5 % of the HI ASSUMED left
For the conversion · cited by Iodine from natural iodide brine by chlorine oxidation, air blowing-out and SO2 absorption (1000 t/a)
I-(aq) -55.2, Cl-(aq) -167.2, I2(s) 0 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)