油菜秸秆燃烧特性及其主要气体产物表征分析

Quantitative Characterization of Rape Straw Combustion and Gas Emissions Using TG / DSC-FTIR-MS Technology

以油菜秸秆为研究对象,基于同步热分析、红外和质谱(TG/DSC-FTIR-MS)联用技术,系统研究了恒定升温速率下不同气流速率和样品粒径油菜秸秆的动态燃烧特性,并对其主要气体产物进行了定性和定量表征分析。研究结果表明:油菜秸秆在设定的不同因素水平条件下燃烧特性无显著差异,在燃烧阶段均析出较大量气体,主要包括大量的CO2以及少量NOx、SO2、HCl等气体,产生量依次递减,且气体随时间释放特性与热失重速率特性具有一致的对应关系。基于TG/DSC-FTIR-MS联用技术定量模拟研究油菜秸秆动态燃烧特性和气体排放特性,可为油菜秸秆环境友好型高效能源化利用提供方法学和基础数据支撑。

This paper took rape straw as the research object. Based on the TG / DSC-FTIR-MS technology,the dynamic characteristics of combustion were studied systematically with different air flow rates and sample particle sizes. And the qualitative and quantitative characterization analysis of main gas emissions was conducted. The results showed that there was no significant difference on combustion characteristics under different factor-levels. During each burning process,most gas escaped,including a larger amount of CO2 and a smaller amount of alkane gases such as NOx,SO2 and HCl with a diminishing magnitude. Also intensity curves of gases released corresponded to the characteristics of thermal weight loss rate. Quantitative study on the dynamic characteristics of combustion and gas emissions using TG /DSC-FTIR-MS technology could provide basic data and methodological support for the rape straw as environmentally friendly renewable energy.