中文摘要：

为了安全回收煤气余热,实验研究了不同初始温度下的一氧化碳和空气混合气体在设置障碍物的管道中的爆燃特性。测量了爆燃压力和火焰速度,分析了化学当量比和温度对爆燃的影响。结果表明：爆燃压力和火焰速度在障碍物段快速提高;一氧化碳当量比为1.1时爆燃的强度最大;初始温度升高后,压力提高逐渐减缓,最大火焰速度下降,但仍大于550m/s,传播时间先快速增加后平稳。

英文摘要：

To safely recover the waste heat of the converter gas, a series of experiments were conducted to explore the deflagration properties of CO-air mixture at different initial temperatures in a duct lined with obstacles. By measuring deflagration pressure and flame speed, influences of CO stoichiometry and temperature on deflagration properties were investigated. Results show that the pressure and flame speed increase rapidly in the duct segment lined with obstacles. When CO stoichiometry is 1.100, deflagration attains the maximum intensity. As the initial temperature increases, the pressure increase slows down, and the maximum flame speed decreases,but still keeps a high speed, over 550 m/s. The flame propagation time increases at first and then becomes stable along with the increasing of the initial temperature.