工业火炬气NOx排放的模拟实验

为准确核定石化企业火炬气NO_x的排放情况，采用模拟火炬燃烧装置对现场采集的不同种类火炬气进行燃烧，取得了燃烧温度及NO_x排放数据。实验结果表明：火炬气的燃烧温度及燃烧烟气中的NO_x质量浓度与火炬气组分中H₂的体积分数呈正相关；兰炭荒煤气、煤甲醇合成驰放气、合成氨变换气和合成氨合成解析气的燃烧温度分别为410，430，560，650℃。通过计算得到4种火炬气的NO_x排放系数分别为：合成氨合成解析气0.3154~0.5406kg/t，煤甲醇合成驰放气0.1245~0.2263kg/t，合成氨变换气0.0591~0.0813kg/t，兰炭荒煤气0.0801~0.1762kg/t。

Simulation Experiment for NOx Emission of Industrial Flare Gas

In order to accurately confirm the NO_x emission of flare gas in petrochemical enterprise,several kinds of flare gas were sampled in situ,and burned in the simulated combustion device to obtain the data of combustion temperature and NO_x emission. The experimental results show that：The combustion temperature and the NO_x mass concentration of the exhaust gas are both positively correlated with the volume fraction of H₂ in the flare gas；The combustion temperatures of coking gas,methanol synthesis purge gas,ammonia synthesis conversion gas and ammonia synthesis resolution gas are 410,430,560,650 ℃ respectively. Through calculation,the NO_x emission coefficients of the 4 kinds of flare gas are obtained as follows：0.315 4-0.540 6 kg/ t for the ammonia synthesis resolution gas,0.124 5-0.226 3 kg/ t for the methanol synthesis purge gas,0.059 1-0.081 3 kg/t for the ammonia synthesis conversion gas,0.080 1-0.176 2 kg/t for the coking gas.