The effects of water addition on the laminar flame speeds of CO/H2/O2/H2O mixtures
The effects of water addition on the laminar flame speeds of CO/H2/O2/H2O mixtures
复制标题
加水对CO/H2/O2/H2O混合物层流火焰速度的影响
DOI：
10.1016/j.ijhydene.2016.04.251
复制
发表时间：
2016-07
影响因子：
7.2
通讯作者：
Yukun Qin
中科院分区：
文献类型：
--
作者：
Dongdong Feng;Yijun Zhao;Pengxiang Wang;Yukun Qin
从实验和理论上研究了H2O加入量和H_2含量对CO/H_2/O_2/H_2O混合气层流火焰速度的影响。用改进的本生燃烧器方法测量了不同CO/H_2比(100/0、95/5、85/15、75/25、50/50)和H_2O浓度(混合物中0-60%)下的层流火焰速度。水的加入改变了混合物的热性质，改变了燃烧反应的化学动力学，从而影响了混合物的层流火焰速度。当H_2O含量低于15%时，层流火焰速度随H_2O含量的增加先增大后减小。当H_2O含量大于15%时，层流火焰速度随H_2O含量的增加而减小。利用CHEMKIN软件分析了添加H2O对层流火焰速度的化学效应(直接反应效应和三体效应)。H_2O的直接反应对CO/H_2燃烧有促进作用(H_2含量为0-50%)。然而，添加大量的H2O总体上具有复杂的效果，因为它对抑制燃烧的三体反应产生影响。H2O加成的三体效应降低了化学反应区内自由基(H、OH和O)的浓度，使火焰前锋向下游移动，改变了CO2的消耗途径。
The effects of H2O addition and H2content on the laminar flame speeds of CO/H2/O2/H2O mixtures were studied experimentally and theoretically. The laminar flame speeds were measured at various CO/H2ratios (100/0, 95/5, 85/15, 75/25, 50/50) and H2O concentrations (0–60% in the mixtures) using an improved Bunsen burner method. The addition of water affected the laminar flame speeds of the mixtures by changing its thermal properties and altering the chemical kinetics of the combustion reaction. When the H2content was lower than 15%, the laminar flame speeds first increased and then decreased as the H2O content increased. When the H2content was greater than 15%, the laminar flame speeds decreased with increasing H2O content. The chemical effects (direct reaction effects and three-body effects) of H2O addition on the laminar flame speeds were analyzed using CHEMKIN package. The direct reaction effects of H2O addition present a promoting effect on CO/H2combustion (for H2content of 0–50%). However, adding large amounts of H2O had a complex effect overall because of its impact on the three-body reaction which inhibited combustion. The three-body effect of H2O addition decreased the concentration of free radicals (H, OH, and O) in the chemical reaction zone, caused the flame front to move downstream, and changed the HO2consumption pathway.
登录
查看更多内容
惰性稀释对贫预混合成气/空气火焰传播和熄灭的影响
影响因子：
7.4
作者：
Wenfeng Shen;Hai Zhang;Yuxin Wu;Junfu Lu
通讯作者：
Junfu Lu
影响因子：
4.4
作者：
G. V. Elbe;B. Lewis
通讯作者：
G. V. Elbe;B. Lewis
加水对合成气层流燃烧速度的热化学影响
影响因子：
5.3
作者：
Yongliang Xie;Jinhua Wang;Nan Xue;Senbin Yu;Meng Zhang;Zuohua Huang
通讯作者：
Zuohua Huang
DOI：
10.1243/095765005x5990
发表时间：
2005-03-01
影响因子：
1.7
作者：
Richards, GA;Casleton, KH;Chorpening, BT
通讯作者：
Chorpening, BT
影响因子：
4.4
作者：
Burke, Michael P.;Chaos, Marcos;Ju, Yiguang
通讯作者：
Ju, Yiguang