Contact method of producing sulphuric acid

Details Contact method of producing sulphuric acid Contact method of producing sulphuric acid

1975-05-21

1977-02-22

Vertiz, Oscar R.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

55 73, 423533, C01B 1772, C01B 1768, B01D 5300

Patent

active

040092500

ABSTRACT:
The proposed contact method of producing sulphuric acid consists in that sulphur or pyrite is roasted, with the resulting gaseous mixture having a maximum moisture content of 0.02 percent by volume being treated in order to oxidize the sulphurous acid anhydride contained therein into sulphuric anhydride. Then, the sulphuric anhydride is absorbed from the gaseous mixture by a 92-98 percent sulphuric acid solution, which is taken in a quantity of 0.4 to 1.5 kg per kg of the gaseous mixture. The absorption process is carried out at a temperature from 30.degree. to 125.degree. C. The flow velocity of the gaseous mixture is 13 to 16 m/sec.

REFERENCES:
patent: 2819947 (1958-01-01), Stahl
patent: 3374061 (1968-03-01), Topsoe
patent: 3432264 (1969-03-01), Bostwick et al.
patent: 3593497 (1971-07-01), Grimm et al.
patent: 3788043 (1974-01-01), Dorr et al.

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