Process and plant for producing sulfuric acid

Details Process and plant for producing sulfuric acid Process and plant for producing sulfuric acid

2005-02-19

2010-10-26

Mayes, Melvin C (Department: 1793)

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

C423S528000

Reexamination Certificate

active

07820134

ABSTRACT:
There are described a process and a plant for producing sulfuric acid by catalytic oxidation of SO2to SO3and subsequent absorption of SO3in sulfuric acid, wherein the SO3is introduced into a first absorption stage and absorbed there in concentrated sulfuric acid, wherein the sulfuric acid having a higher concentration due to the absorption is passed through a heat exchanger and cooled, and wherein the non-absorbed SO3is supplied to a second absorption stage for the further absorption in sulfuric acid. Before the first absorption stage a partial stream of SO3is branched off and supplied directly to the second absorption stage.

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