Method for zonal injection of chemicals into a furnace convective pass to reduce pollutants from flue gases
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United States of America Patent
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Nov 24, 2009
Grant Date -
Feb 19, 2009
app pub date -
Oct 29, 2008
filing date -
May 22, 2003
priority date (Note) -
Expired
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Abstract
Zonal injection of varying compositions of chemicals, particularly an ammonia-based reagent and hydrocarbon, through injection lances arranged in a grid formation to define planar zones in a furnace convective pass of a furnace. The supply of chemicals is controlled so as to be individually determined for each discrete zone of the grid depending on conditions in that zone.
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