中文摘要：

几典型低生热的价值(LCV ) 的瘦 premixed 火焰特征 syngases (基础 CO/H2/CH4/CO2/N2 ) ，包括的沥青的煤，木头残余，玉米核心，和小麦稻草气化 syngas，被调查用哦平面激光导致的荧光(PLIF ) 技术。哦在狂暴的火焰以内的激进的分布为不同骚乱紧张被测量。syngases 的火焰结构被分析并且描绘关于烧并且 unburnt 区域，火焰弯曲(锋利的尖顶) ，本地扑灭(洞和穿入) ，哦反应层厚度，起皱，并且另外的特征，与 OH-PLIF 即时图象和统计分析。结果证明 H2 内容， LCV，和骚乱紧张是影响 OH 激进的紧张和厚度的最有效的因素哦激进的层。有相对更高的 LCV 和 H2 内容的沥青的煤气化 syngas 趋于容易烧坏。通过在 OH 激进的层和信号紧张的厚度的变化，反应层能被加强骚乱压缩，从而，燃烧 syngas 处理。

英文摘要：

Lean premixed flame characteristics of several typical low calorific value （LCV） syngases （basis CO/H2/CH4/CO2/N2）, including bituminous coal, wood residue, corn core, and wheat straw gasification syngas, were investigated using OH planar laser induced fluorescence （PLIF） technology. OH radical distributions within the turbulent flame were measured for different turbulence intensifies. Flame structures of syngases were analyzed and characterized with respect to burnt and unburnt regions, flame curvature （sharp cusp）, local extinction （holes and penetration）, OH reaction layer thickness, wrinkling, and other features, with OH-PLIF instantaneous images and statistical analysis. Results show that H2 content, LCV, and turbulence intensity are the most effective factors influencing the OH radical intensity and thickness of OH radical layers. The bituminous coal gasification syngas with relatively higher LCV and H2 content tends to burn out easily. Through changes in thickness of the OH radical layers and signal intensities, the reaction layer can be compressed by intensifying turbulence and thereby the combustion processes of syngas.