【摘要】 为研究液化天然气(LNG)的加入对降低旋流燃烧器出口NO生成的影响机理，使用化学动力学分析方法，研究了掺混LNG的煤粉气流的气相燃烧反应过程。结果表明：LNG投运量为50%时，反应器内NO体积分数下降约16%;在低过量空气系数(α<1)和反应温度T>1 350 K时加入LNG对降低NO体积分数的效果较好；在过量空气系数α<1的情况下，增加LNG投运量可以促进NO生成量的降低，但在过量空气系数α>1的情况下，增加LNG投运量对降低NO体积分数的影响很小。更多还原

【Abstract】 In order to study the effect of adding liquefied natural gas (LNG) on the reduction of NO generation at the swirl burner outlet, the reaction process of gas-phase combustion of LNG blended pulverized coal flow was studied through chemical kinetic analysis method.Results show that when the ratio of LNG was 50%, the volume fraction of NO in the reactor decreased by 16%. Adding LNG had a better effect on reducing the NO concentration at low excess air coefficient (α<1) and the reaction temperature T>1 350 K; In the case of excess air coefficient α<1, increasing LNG commissioning volume promoted the reduction of NO concentration, but in the case of excess air coefficient α>1, increasing LNG had little effect on reducing NO production concentration.更多还原