Reduction of acid rain and ozone depletion precursors
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United States of America Patent
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Jul 8, 1997
Grant Date -
N/A
app pub date -
Jun 19, 1995
filing date -
Sep 30, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of reducing acid emissions and ozone deletion precursors from a flue gas produced by the combustion of sulphur-or nitrogen-containing fuel or acid emissions and ozone deletion precursors from chemical plants. The method comprises introducing into a flue containing the gas, an additive derived from the chemical reaction of pyrolysis liquor with an alkaline earth metal compound in the presence of an oxidant. This reaction produces a hydrophobic/hydrophilic mixture containing a plurality of thermolabile alkaline earth metal compounds. These compounds are able to decompose at flue gas temperature to produce an alkaline compound able to react with sulphur dioxide and oxides of nitrogen to eliminate them from the gas.
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International Classification(s)
- 1995 Application Filing Year
- C01B Class
- 408 Applications Filed
- 196 Patents Issued To-Date
- 48.04 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- C01B Class
- 7.38 % this patent is cited more than
- 28 Age