Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1975-07-22
1977-03-15
Vertiz, Oscar R.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423522, 252190, C01B 1700, C01B 1772, C09K 300
Patent
active
040124878
ABSTRACT:
A stack gas, generally from a sulfuric acid plant, containing SO.sub.2, is contacted with an absorptive medium prepared by wetting at least the surface of a first metal selected from aluminum, magnesium and manganese with a second metal selected from mercury, indium, gallium and alloys of indium/gallium and contacting the wetted first metal with SO.sub.2, in a solvent medium in the presence of an excess of hydrogen ions until the first metal erodes and is taken up by the solution as a result of the reaction which takes place. The absorptive medium thus formed has the ability to absorb SO.sub.2 at lower temperatures and thereafter desorb SO.sub.2 at increased temperature and/or with inert gas stripping. The SO.sub.2 enriched gas stream obtained as a result of the desorption process can be recycled to the sulfuric acid plant.
REFERENCES:
patent: 2746842 (1956-05-01), Block et al.
patent: 3761570 (1973-09-01), Lowicki et al.
Heller Gregory A.
Vertiz Oscar R.
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