Sulphur trioxide absorption apparatus and process

Details Sulphur trioxide absorption apparatus and process Sulphur trioxide absorption apparatus and process

1986-01-15

1987-03-31

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423533, 422161, 422172, 261148, C01B 1774, C01B 1748, B01D 5000, B29C 4700

Patent

active

046542051

ABSTRACT:
An absorption tower for absorbing sulphur trioxide in sulphuric acid having distinct upper and lower packed absorption zones wherein substantially all of the sulphur trioxide is absorbed by the sulphuric acid in the lower zone, while in the upper zone the depleted gas stream is significantly cooled. The two zones receive feed acids of different temperatures and different acid irrigation rates. The tower allows of improved energy recovery while providing for environmentally acceptable emission standards.

REFERENCES:
patent: 1811797 (1931-06-01), Lechler
patent: 2147161 (1939-02-01), Haglund
patent: 2184707 (1939-12-01), Berl
patent: 3944401 (1976-03-01), Dorr et al.
patent: 4029751 (1977-06-01), Dorr et al.

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