H_2/CO/CH_4/CO_2混合燃气着火温度的实验研究  

EXPERIMENTAL STUDY ON THE IGNITION TEMPERATURE OF HYDROGEN-CARBON MONOXIDE-METHANE-CARBON DIOXIDE MIXTURES

作　　者：刘庆滨[1] 张宗珩 乔晓磊[1] 金燕[1] 

机构地区：[1]太原理工大学电气与动力工程学院,太原研究生030024 [2]中煤平朔电力工程有限公司

出　　处：《煤炭转化》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)

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.

关 键 词：着火温度 多联产 一次风率 活化能 

分 类 号：TK16[动力工程及工程热物理—热能工程]