Apparatus for producing SO.sub.3 and sulphuric acid by a catalyt

Details Apparatus for producing SO.sub.3 and sulphuric acid by a catalyt Apparatus for producing SO.sub.3 and sulphuric acid by a catalyt

1972-07-10

1977-02-15

Wertz, Oscar R.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423535, C01b 1772, C01b 1768, C01b 1770

Patent

active

040083160

ABSTRACT:
Process for production of SO.sub.3 by catalytic oxidation of SO.sub.2 which comprises carrying out the oxidation in two stages with intermediate absorption. The conversion of SO.sub.2 in the first stage is about 70-80% for a starting gas which is a cooled and cleaned roaster gas and 70-90% for a starting gas which is a sulfur combustion gas. The second stage comprises two catalyst beds, and the gas is cooled intermediate the beds. High overall conversion is obtained with low catalyst requirement.

REFERENCES:
patent: 3142536 (1964-07-01), Guth et al.
patent: 3147074 (1964-09-01), Maurer
patent: 3259459 (1966-07-01), Moller

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