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Manufacturing of Sulfuric Acid
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Manufacturing of Sulfuric Acid
Conversion of Sulfur to Sulfur Dioxide
Phase 1
Extraction
Basic Information
Molten sulfur is placed into a furnace at 1300 K
Sources of sulfur include natural gas and oil
Ores such as copper, zinc, nickel and lead
35% of Sulfur dioxide is obtained through the Frasch Process
most widely used chemical
O
H
S
gasoline, fertilizer, paints, batteries, etc.
4
2
98.07848 g/mol
properties
The gas that is being produced is 10-12% sulfur dioxide and 10% oxygen
corrosive and reactive, affinity for water
The gas is then cooled to 700 K
Frasch Process- water at high enough temperature to melt and reaches the surface through compressed air then solidifies
S(s) + O (g) -----> SO (g)
2
• 2PbS(s) + 3O (g) ---> 2PbO(s) + 2SO (g)
2
Conversion of Sulfur Dioxide to Sulfur Trioxide
Conversion of Sulfur Trioxide to Sulfuric Acid
The name for this process is called Contact Process
Sulfur dioxide and oxygen flow through a catalyst and they combine chemically to produce sulfur trioxide
In the third and fourth reaction bed, this happens
2SO (g) + O (g) <---> 2SO (g)
2
3
Water and heat are added to make this reaction possible
An unwanted bi product of this reaction is sulfuric acid mist which is put into the atmosphere
SO (g) + H O (l) ----> H SO (l)
3
2
4