Example of an industrial reactor calculation
Calculation of catalytic reactors

Unit type: double absorption (2 + 2). Sulfur combustion with air injection cooling between 3rd and 4th bed.

a = 12% by volume of SO₂ in the gas.

b = 9% by volume of O₂ in the gas.

x (%) is the conversion rate.

Production: 300 t/d of 100% sulfuric acid.

Overall efficiency: 99.3%.

Gas composition at the converter inlet is as follows:

• SO₂ 2,877 Nm³/h (12% by volume) ;

• O₂ 2,158 Nm³/h (or 9% by volume) ;

• N₂ 18,943 Nm³/h (79% by volume).

Total gas flow: 23,978 Nm³/h.

For the 1^er...