Chemisorptive catalytic oxidation process for SO2 from smelting waste gases by Fe(II)

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作者：
Universitaet Kaiserslautern, Kaiserslautern, Germany [1 ]
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来源：
Sep Technol | / 4卷 / 253-260期
基金：
中国国家自然科学基金;
关键词：
Catalysts - Exhaust gases - Gas absorption - Iron compounds - Oxidation - Reaction kinetics - Smelting - Sulfur dioxide - Wastes;
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摘要：
Chemisorption of SO2 from smelting plant exhaust gases in a single sieve plate column was investigated. Main parameters were SO2 and O2 gas and H2SO4, FeSO4 and Al2(SO4)3 liquid concentrations on reaction rate and equilibrium in FeII-EDTA solutions. Absence of inhibitors with this kind of flue gases promote fast kinetics. Optimal process conditions with 3% wt. FeSO4 catalyst up to 2000 ppm SO2. Maximum yield of 16% H2SO4 could be achieved considering optimal liquid/vapor ratio, oxygen surplus and insert salt concentrations.
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