Method of manufacturing sulphur-trioxide for the production of s

Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing

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423522, C01B 1798, C01B 1774

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active

045200033

ABSTRACT:
A method for manufacturing sulphur-trioxide for the production of sulphuric acid from sulphur-dioxide containing gas, particularly furnace gas obtained from metallurgical processes by oxidation to sulphur trioxide in the presence of a catalyst and conversion of the sulphur trioxide to sulphuric acid. The sulphur dioxide is first separated from the gas preferably converted to liquid form and is then subsequent to being vaporized in a stoichiometric excess oxidized with oxygen.

REFERENCES:
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patent: 1344905 (1920-06-01), Laist et al.
patent: 1520093 (1924-12-01), Shapleigh
patent: 2128108 (1938-08-01), Tyrer et al.
patent: 3671194 (1972-06-01), Roberts
patent: 4016248 (1977-04-01), Vydra et al.
Cathala, J., Chemie-Ing Tech. 25, No. 6, pp. 285-291, Jun. 1953, Direct Production of Sulfuric Anhydride on an Industrial Scale (Translated).

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