Question

Explain in detail the manufacture of sulfuric acid by contact process

Answer 1

step 1 : suphur burners ( production of sulphur dioxide by burning sulphurs )

step 2: contact process (catalytic oxidation of sulphur)

catalyst: v2o5

temp:450 -500°C

coversion : 98°/• of sulphur dioxide converted to sulphur trioxide

step3: absorption tower (absorption of sulphur trioxide in 98 percent sulphuric acid to give pyrosulphuric acid (H2S2O7))

diluation tower ( dilution of H2S2O7) with calculated amy of soft h2o to give sulphuric acid of the desired conc .