Process for the preparation of sulfuric acid

Details Process for the preparation of sulfuric acid Process for the preparation of sulfuric acid

1981-03-12

1982-09-07

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

55 73, C01B 1788

Patent

active

043483739

ABSTRACT:
The invention relates to a process for preparing concentrated sulfuric acid by conducting a gas stream containing SO.sub.3 and H.sub.2 SO.sub.4 -vapor in a sulfuric acid tower in countercurrent to liquid sulfuric acid formed through a concentrating zone containing filler bodies trickled with sulfuric acid and an absorption zone where sulfuric acid vapor is absorbed in recycled sulfuric acid on filler bodies trickled therewith. A very substantial reduction in the amount of acid mist formed in conventional processes of this type is obtained by maintaining such temperature conditions in the tower that the recycle acid is withdrawn from the tower at a temperature T.sub.4 determined by the formula

REFERENCES:
patent: 2793935 (1957-05-01), Haltmeier et al.
patent: 3374061 (1968-03-01), Topsoe et al.
Schoubye, "Sulphuric acid production from lean H.sub.2 S containing gases", Sulphur, Jul.-Aug. 1978.
"High-grade sulphuric acid from moist sulphureous gases", Sulphur, No. 123, Mar./Apr. 1976, pp. 36-42.

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