Furnaces – Process – Treating fuel constituent or combustion product
Patent
1990-06-22
1991-06-04
Favors, Edward G.
Furnaces
Process
Treating fuel constituent or combustion product
110212, 423216, 423235, 423237, 423242, 431 5, F23J 1100
Patent
active
050204572
ABSTRACT:
A method of destroying NO.sub.x and SO.sub.2 in a combustion gas in disclosed. The method includes generating active species by treating stable moleucles in a high temperature plasma. Ammonia, methane, steam, hydrogen, nitrogen or a combination of these gases can be selected as the stable molecules. The gases are subjected to plasma conditions sufficient to create free radicals, ions or excited atoms such as N, NH, NH.sub.2, OH.sup.-, CH and/or CH.sub.2. These active species are injected into a combustion gas at a location of sufficiently high temperature to maintain the species in active state and permit them to react with NO.sub.x and SO.sub.2. Typically the injection is made into the immediate post-combustion gases at temperatures of 475.degree.-950.degree. C.
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Boyle John M.
Ekmann James M.
Fu Yuan C.
Mathur Mahendra P.
Favors Edward G.
Fisher Robert J.
Glenn Hugh W.
Moser William R.
The United States of America as represented by the United States
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