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| Study on removing NOx by plasma combined with modified attapulgite clay catalyst. |
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Abstract The way of plasma combined with modified attapulgite clay catalyst was adopted to remove NOx and investigations for effect of input voltage of plasma reactor and calcining temperature of attapulgite clay on NO and NOx removal ratio were presented. When the input voltage was smaller then 30 kV it had a little infection on NO and NOx removal ratio, but as the input voltage was bigger than 30 kV, with the input voltage increasing the NO and NOx removal ratio enhance. when calcining temperature was smaller than 400℃, the attapulgite clay activated insufficient. when the temperature bigger than 600℃, some parts of the clay would be fused and agglomerated, so the NO and NOx removal ratio was lower. When the temperature was 400~600℃, the activation of attapulgite clay could reach the best form. The maximum value of NOx removal ratio was 89.6% under the condition of input voltage bigger than 30 kV and the temperature at 400~600℃.
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Received: 25 September 2008
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