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NOx的控制是燃气炉燃烧过程洁净优化的重点,其关键问题在于湍流燃烧过程中NOx的生成机理。采用燃气实验炉和综合烟气分析仪等设备,研究了旋流强度对平焰燃气炉内火焰特性、温度场和烟气中NOx生成特性的影响规律。准确测量了不同燃烧工况下炉内中心垂直剖面温度和烟气中NOx含量,并分析了不同旋流强度下炉内火焰特性。研究结果表明,适当增大旋流强度可以使燃烧区和炉膛顶部温度更加均匀,进而有效降低烟气中NOx的含量。
The control of NOx is the focus of the clean optimization of the combustion process of the gas furnace. The key problem lies in the formation mechanism of NOx during the turbulent combustion process. The effects of swirling intensity on flame characteristics, temperature field and NOx formation characteristics in flue gas furnace were studied by gas furnace and integrated flue gas analyzer. Accurately measured the vertical section temperature and flue gas NOx content under different combustion conditions, and analyzed the flame characteristics under different swirl intensity. The results show that increasing the swirling intensity can make the temperature in the combustion zone and the top of the furnace more uniform, and then effectively reduce the NOx content in the flue gas.