Reversible reaction

Oxidation of nitric oxide (oxidation volume and tower gas spaces)

2NO+O₂in equilibrium with2NO₂

Direction: Reversible (an equilibrium)
Processes: 2
Stated as: Fixed conversion, Equilibrium
Element balance: Checked: balances in all 2 processes

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
NO	Nitric oxide	10102-43-9	reactant	-2
O₂	Oxygen	7782-44-7	reactant	-1
NO₂	Nitrogen dioxide	10102-44-0	product	2

In the processes

Weak nitric acid by dual-pressure ammonia oxidation (1000 t/d HNO3 as 60 wt% acid)Concept · not reviewed
NO_OX2 NO + O2 → 2 NO2
Stated as
Fixed conversion
Element balance
Balances in every element
Conversion
35.1 % of NO (assumed: D-007: NO2/(NO+NO2) = 0.5 leaving E105, scripts/hno3_balance.py)
Sodium nitrite from ammonia oxidation and soda absorption (with sodium nitrate by inversion)Concept · not reviewed
NO_OX · Oxidation of nitric oxide (oxidation volume and tower gas spaces)2 NO + O2 → 2 NO2
Stated as
Equilibrium
Element balance
Balances in every element

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.

cheme chemistry library nitric_acid
For the reaction · cited by Weak nitric acid by dual-pressure ammonia oxidation (1000 t/d HNO3 as 60 wt% acid)
D-007: NO2/(NO+NO2) = 0.5 leaving E105, scripts/hno3_balance.py
For the conversion · cited by Weak nitric acid by dual-pressure ammonia oxidation (1000 t/d HNO3 as 60 wt% acid)
https://patents.google.com/patent/US2032699 (Description: NO partly oxidised on cooling; NO excess favours nitrite)
For the reaction · cited by Sodium nitrite from ammonia oxidation and soda absorption (with sodium nitrate by inversion)

Starter template

A starting template is in the ChemE-as-Code toolkit (Nitric acid (Ostwald process, ammonia oxidation)): cheme chemistry library nitric_acid --add

Templates bring the stoichiometry, the components and typical catalysts; most give no conversion or kinetics, and their sources are general references, not this reaction's processes.