Sulphuric Acid & Oleum
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Description
The manufacture of Sulphuric Acid is based on Double Conversion Double Absorption (DCDA) Process. The main steps consist of burning of elemental Sulphur in excess of air to form Sulphur Dioxide (SO2), conversion of Sulphur Dioxide to Sulphur Trioxide (SO3) in presence of Vanadium Pentoxide (V2O5) Catalyst and finally reacting Sulphur Trioxide, so formed, with water to produce a solution containing 98-98.5 H2SO4 (although from practical point of view, SO3 is absorbed in 98-98.5% H2SO4 to yield an acid of higher concentration which on dilution yields 98-98.5% Sulphuric Acid).
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Sulphuric Acid & Oleum
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