摘要
根据粉尘云最低着火温度的测试原理,自行建立了H2/CO/CH4/CO2混合燃气着火温度测定实验系统.基于该实验系统,研究了初始条件为常温常压下的H2/CO/CH4/CO2混合燃气着火特性,分别测得不同混合比例以及不同一次风率下混合燃气的着火温度.结果表明:燃气着火温度随H2含量的增加而降低,随CH4含量的增加而升高,CO含量的增加对燃气着火温度的影响具有双重性.系统热力条件一定,燃气的着火温度基本不变,与一次风率无关.测得H2,CO以及CH4的着火温度分别为563℃,667℃和790℃.
According to the methods for determining the minimum ignition temperature by dusts,an experimental system was designed independently to test the ignition temperature of hydrogen-carbon monoxide-methane-carbon dioxide mixtures.Ignition characteristics of hydrogen-carbon monoxide-methane-carbon dioxide mixtures were studied at atmospheric temperature and pressure on the system.Ignition temperatures were obtained respectively at different mixing rations and primary air ratios.The results show that the ignition temperature for gas decreases with the hydrogen contents increasing,but increases with the methane adding.Especially,the effects of carbon monoxide increase on the ignition temperature of gas are indeterminable.Ignition temperature keeps invariable,and is unrelated to primary air ratios when the thermal conditions of the system are fixed.Hydrogen,carbon monoxide and methane＇s ignition temperatures are separately 563 ℃,667 ℃ and 790 ℃ by experiments.
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第4期46-49,共4页
Coal Conversion
基金
国家重点基础研究发展计划(973)项目(2005CB221206)
关键词
着火温度
多联产
一次风率
活化能
ignition temperature
poly-generation
primary air ratio
activation energy
