Laminar flame speed and markstein length characterisation of steelworks gas blends
Laminar flame speed and markstein length characterisation of steelworks gas blends
复制标题
炼钢厂气体混合物的层流火焰速度和马克斯坦长度表征
DOI：
10.1016/j.apenergy.2014.04.044
复制
发表时间：
2014
期刊：
影响因子：
11.2
通讯作者：
Pugh D
中科院分区：
文献类型：
--
作者：
Pugh D
在大气环境条件下，采用向外传播的球形火焰结构表征了不同混合气体成分的燃烧特性。利用非线性外推技术得到了空气燃烧的层流燃烧速度和Markstein长度以及当量比的变化。对于焦炉煤气在略富集条件下的燃烧，S−1的峰值燃烧速度几乎达到1m，火焰拉伸对燃烧速度的影响也随着当量比的增加而增加。然后将焦炉煤气(COG)的摩尔分数(COG)在0-15%的范围内与四种含有1-7%H2分数的高炉煤气(BFG)混合，这代表了生产中固有的成分波动。给出了添加COG引起的燃烧速度变化的曲线，并对H_2变化引起的波动的抑制程度进行了量化。还给出了可变混合气体在测试范围内总热值和相应的沃伯指数的相对变化。使用PREMIX编码的CHEMKIN-PRO生成模拟结果，并相对于实验数据评估特定化学反应机理的性能。
An outwardly propagating spherical flame configuration has been used to characterise the combustion of different blended steelworks gas compositions, under atmospheric ambient conditions. A nonlinear extrapolative technique was used to obtain values of laminar burning speed and Markstein length for combustion with air and change in equivalence ratio. Peak burning speed was shown to reach almost 1 m s−1for the combustion of coke oven gas under marginally rich conditions, and the influence of flame stretch on burning speed also shown to increase with equivalence ratio. The molar fraction of coke oven gas (COG) was then blended in the range 0–15% with four blast furnace gas mixtures (BFG) containing 1–7% H2fractions, representative of the inherent compositional fluctuation experienced in production. Profiles for change in burning speed resulting from this addition of COG are presented, and the dampening extent of fluctuation resulting from the H2variation has been quantified. Results are also presented for the relative change in gross calorific value and corresponding Wobbe index of the variable blended gases across the tested limits. Modelled results were generated using the PREMIX coded CHEMKIN-PRO, and the performance of specified chemical reaction mechanisms evaluated relative to the experimental data.
GT-POWER模拟高炉燃气机燃烧特性
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
Yong Qi Liu;Xiao Yan Wang;G. Zhu;Ruixiang Liu;Z. Gao
通讯作者：
Z. Gao
动态成分高炉煤气的层流燃烧速度和马克斯坦长度表征
DOI：
10.1115/gt2012-69667
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Pugh D
通讯作者：
Pugh D