Method and composition for treating flue or exhaust gases utilizing modified calcium hydroxide
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United States of America Patent
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Dec 22, 1992
Grant Date -
N/A
app pub date -
Nov 21, 1990
filing date -
Nov 21, 1990
priority date (Note) -
Expired
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Abstract
A process is shown for treating flue or exhaust gases in order to remove sulfur oxides and hydrochloric acids in which calcium hydroxide having a surface area of at least 25 m.sup.2 /g and a moisture content lower than 50% is injected in the gases to be treated either alone, or in a mixture with magnesium hydroxide. The calcium hydroxide used in the process is prepared by reacting quicklime or dolomitic quicklime with water in the presence of a glycol or an amine companion additive.
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