天然气掺氢燃烧特性分析  

Analysis of Combustion Characteristics of Natural Gas Blended with Hydrogen

作　　者：张子扬 高跃 丁战武[3] 王林 张松松 魏孔山 苏明 韩璐 ZHANG Ziyang;GAO Yue;DING Zhanwu;WANG Lin;ZHANG Songsong;WEI Kongshan;SU Ming;HAN Lu(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China;Liaoning Ecological Environment Monitoring Center,Shenyang 110161,Liaoning,China;Shenyang Special Equipment Testing and Research Institute,Shenyang 110035,Liaoning,China;China Special Equipment Inspection Group Co.,Ltd.,Beijing 100029,China;Liaoning Inspection,Testing and Certification Center,Shenyang 110036,Liaoning,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142 [2]辽宁省生态环境监测中心,辽宁沈阳110161 [3]沈阳特种设备检测研究院,辽宁沈阳110035 [4]中特检验集团有限公司,北京100029 [5]辽宁省检验检测认证中心,辽宁沈阳110036

出　　处：《工业锅炉》2025年第2期1-6,共6页Industrial Boilers

基　　金：国家重点研发计划项目(2022YFB4003905)。

摘　　要：氢能作为一种清洁能源技术,因其能够显著减少碳排放而备受关注。采用天然气掺氢燃烧是现阶段燃天然气锅炉降低碳排放最经济、最可行的办法之一。利用FLUENT模拟软件研究了燃气锅炉中氢/天然气混合燃料的燃烧特性,在不同掺氢比(0%~80%)燃料组成情况下,主要研究了炉内速度场、温度场、氮氧化物浓度场的变化规律。研究结果表明:掺氢比增大,火焰温度上升,火焰长度变短;CO和CO_(2)的排放量显著减少;混合燃料中氢气成分的增加会导致局部释热量提高,进而导致NO_(x)排放增加,当掺氢比超过0.8时,NO_(x)排放量增加的幅度变大。Hydrogen energy,as a clean energy technology,has attracted much attention due to its ability to significantly reduce carbon emissions.The use of natural gas mixed with hydrogen combustion is currently the most economical and feasible way for natural-gas-fired boilers to reduce carbon emissions.The combustion characteristics of hydrogen/natural gas mixed fuel in gas-fired boilers were studied using FLUENT simulation software.The variation laws of velocity field,temperature field,and nitrogen oxide concentration field in the furnace were mainly studied under different hydrogen blending ratios(0%~80%) fuel compositions.The research results indicate that as the hydrogen doping ratio increases,the flame temperature rises and the flame length becomes shorter;the emissions of CO and CO_(2) have significantly decreased;the increase in hydrogen content in mixed fuel will lead to an increase in local heat release,which in turn will result in an increase in NO_(x) emissions.When the hydrogen blending ratio exceeds 0.8,the magnitude of the increase in NO_(x) emissions becomes greater.

关 键 词：天然气掺氢 燃烧特性 排放特性 数值计算 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]