Method of treating exhaust gases
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United States of America Patent
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-
Jun 23, 1987
Grant Date -
N/A
app pub date -
Mar 7, 1984
filing date -
Mar 7, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In treating exhaust gases containing SO.sub.2, HCl and HF, there is disclosed a method of treating such exhaust gas which comprises detecting the amounts of HCl and HF in the exhaust gas and supplying an amount of a magnesium compound commensurate with a stoichiometric amount to become at least MgCl.sub.2 and MgF.sub.2 in an exhaust-gas treating tower and a calcium compound as a SO.sub.2 solvent into the exhaust-gas treating tower. The aforesaid method of treating an exhaust gas comprises a method of causing Mn ion to coexist in an absorbing solution in contact with the exhaust gas.
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