【摘要】 用Mn Fe Ox气相催化氧化NO,在旋转填充床中以Na OH溶液吸收脱除NO_x。考察模拟烟气中NO的转化率、进口体积分数、吸收液循环使用时间对NO_x脱除率影响,监测了吸收液循环使用时间420 min内的p H值及离子成分。结果表明,NO转化率55. 17%时,NO_x脱除率达93. 42%; NO进口体积分数提升,使NO_x的脱除率先上升后下降;Na OH吸收液循环使用420 min内,NO_x脱除率在90. 8%以上,反应产物为NO-2及少量NO-3,p H值12. 68。更多还原

【Abstract】 Mn Fe Oxwas used to catalytic oxidation of NO in gas phase and removes NO_xby Na OH solution in a rotating packed bed. The removal efficiency of NO_xwas investigated under various operating conditions including the conversion rate of NO,inlet NO volume fraction and cycling time of the absorption solution in the simulated flue gas. Also,the p H value and ionic composition of the absorption solution were tested at the cycling time of 420 min. The results indicated that the removal efficiency of NO_xis 93. 42% when the conversion rate of NO is 55. 17%. Additionally,NO_xremoval efficiency first increased and then decreased with increasing inlet NO volume fraction. Moreover,the removal efficiency of NO_xwas stable above 90. 8% after420 min of Na OH absorption solution and the main component of the absorption solution was NO-2,the small amount of NO-3 and the p H value of the absorption solution was 12. 68.更多还原