Large Volume Inorganic Chemicals - Ammonia ... - ammk-rks.net

Chapter 4Figure 4.6 gives an impression of a sulphuric acid plant. The example shows a doublecontact/double absorption plant based on sulphur combustion:1. solid sulphur storage2. sulphur melting3. liquid sulphur filtration4. liquid sulphur storage5. air filter and silencer6. air dryer7. sulphur combustion, two burners with individual air supply8. steam drum, feed-water tank, waste heat boiler9. converter10. intermediate absorber11. final absorber12. stack13. heat exchangers, economisers and superheater.Many processes for sulphuric acid production have been developed over the years. Thesedevelopments were dependent on the large number of sources of raw material which generateSO 2 . For a more detailed description of individual processes, see:• Section 4.4.1 ”Single contact/single absorption process”• Section 4.4.2 “Double contact/double absorption process”• Section 4.4.8 “Wet catalysis process”• Section 4.4.9 “Combined wet/dry catalysis process”.For tail gas treatment, see Sections 4.4.19 to 4.4.22.112134111392310713568Figure 4.6: Example for a sulphuric acid plant (top view)[68, Outukumpu, 2006]154 Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers