Explain in detail the manufacture of sulfuric acid by contact process
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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 .
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