| 摘要 |
A method of destroying NOx and SO2 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, NH2, OH-, CH and/or CH2. 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 NOx and SO2. Typically the injection is made into the immediate post-combustion gases at temperatures of 475 DEG -950 DEG C.
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