气体添加剂对热脱硝过程影响的实验和建模研究

An experimental study of thermal DeNOx process with different additives was performed in an electricity- heated tubular flow reactor, showing that CO is less effective to lower the optimum temperature than H2 and CH4. The maximum NO reduction is lowered with H2 added, while it is hardly affected by CO or CH4. The temperature window is widened appreciably with CH4 added, while it is narrowed slightly by H2 or CO. The disadvantage of CH4 is that it causes CO emission due to its incomplete oxidation, and the maximum conversion of CH4 to CO is more than 50%. In general, the calculation using a detailed chemical kinetic model predicts most of the process features reasonably well. The analysis on reaction mechanism shows that the effects of these additives on NO reduction are achieved principally by promoting the production of &;#8226;OH radical.

Experimental and modeling study of the effects of gas additives on the thermal DeNOx process

An experimental study of thermal DeNO_x process with different additives was performed in an electricity-heated tubular flow reactor, showing that CO is less effective to lower the optimum temperature than H_2 and CH_4.The maximum NO reduction is lowered with H_2 added, while it is hardly affected by CO or CH_4.The temperature window is widened appreciably with CH_4 added, while it is narrowed slightly by H_2 or CO.The disadvantage of CH_4 is that it causes CO emission due to its incomplete oxidation, and the maximum conversion of CH_4 to CO is more than 50%.In general, the calculation using a detailed chemical kinetic model predicts most of the process features reasonably well.The analysis on reaction mechanism shows that the effects of these additives on NO re-duction are achieved principally by promoting the production of OH radical.