CAJ | 학술논문

为研究高压下氮气稀释富氢合成气的微混合燃烧规律,利用常压燃烧试验校正模型对不同压力、功率和当量比下的温度场、火焰形态以及污染物排放进行了计算分析。结果表明,随着压力的升高,燃烧器火焰温度和出口温度先升高后略微下降,火焰宽度逐渐变小,火焰高度有增大趋势,NOx 排放指数升高,但在压力＞14 MPa时,趋势变缓。
위연구고압하담기희석부경합성기적미혼합연소규률,이용상압연소시험교정모형대불동압력、공솔화당량비하적온도장、화염형태이급오염물배방진행료계산분석。결과표명,수착압력적승고,연소기화염온도화출구온도선승고후략미하강,화염관도축점변소,화염고도유증대추세,NOx 배방지수승고,단재압력＞14 MPa시,추세변완。
Aiming at investigating the micro-mixing combustion characteristics of nitrogen diluted hydrogen-rich syngas at high pressures,the combustion model corrected at atmospheric pressure was adopted to ana-lyze the temperature field,flame shape and pollution emissions under conditions with different pressures, powers and equivalent ratios.The results show that,with an increase in pressure,the flame temperature and outlet temperature of the burner rose first and then dropped slightly;the flame width decreased gradu-ally while its height grew;the NOx emission indexes increased and tended to be smooth when the pressure increased to higher than 1 4 MPa.