Processes, apparatus, compositions and systems for reducing emissions of HCI and/or sulfur oxides
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United States of America Patent
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Jul 19, 2016
Grant Date -
Oct 23, 2014
app pub date -
Feb 26, 2014
filing date -
Feb 27, 2013
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Abstract
HCl and sulfur oxides are reduced by treating combustion gases with an aqueous copper compound referred to as copper-based chloride remediator (CBCR). The process is preferably implemented by identifying locations within a combustor for feeding the CBCR, determining the physical form and injection parameters for the CBCR and injecting the CBCR under conditions effective to reduce HCl and/or sulfur oxides. Effective temperatures for introducing the CBCRs can be from about 250° to 900° F. for HCl and up to about 2200° F. for sulfur oxides. Preferred CBCRs include copper and an ammonia moiety. One composition is copper diammonium diacetate, empirical formula of C2H7CuNO2. CBCR compositions are not sorbents and chemically convert HCl from a gaseous to a solid form.
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