CLEANING STACK GAS
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United States of America Patent
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Sep 2, 2014
Grant Date -
Sep 18, 2014
app pub date -
Mar 15, 2013
filing date -
Mar 15, 2013
priority date (Note) -
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Abstract
A method and apparatus for cleaning carbon oxides, sulfur oxides and nitrogen oxides, from stack gas, from combustion of coal, combustion of natural gas or propane, or from a cement kiln by reaction using calcium zeolite and sodium zeolite catalysts. The method also includes cleaning the catalytic beds with nitrogen to remove the collected reactants and recover a fertilizer product and the catalysts for reusable.
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