A novel multi-jet burner for hot flue gases of wide range of temperatures and compositions for optical diagnostics of solid fuels gasification/combustion
A novel multi-jet burner for hot flue gases of wide range of temperatures and compositions for optical diagnostics of solid fuels gasification/combustion
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一种新型多喷嘴燃烧器，适用于各种温度和成分的热烟气，用于固体燃料气化/燃烧的光学诊断
DOI：
10.1063/1.4979638
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发表时间：
2017-04-01
影响因子：
1.6
通讯作者：
Li, Zhongshan
中科院分区：
文献类型：
--
作者：
Weng, Wubin;Borggren, Jesper;Li, Zhongshan
建立了一种新型的多射流燃烧器，以提供具有宽范围可变参数的一维层流平板火焰，用于多用途定量光学测量。该燃烧器的特点是由两个独立的增压室，一个支持矩阵的181层流射流火焰和其他支持从一个多孔板与小孔均匀分布在射流的同向流。通过独立控制两个充气室的气体供应，可以产生70 mm x 40 mm的均匀矩形燃烧气体区域，具有宽范围的温度和当量比。热气体的温度可以根据不同的火焰条件从1000 K到2000 K进行调节。燃烧器设计用于在气相或液相中接种添加剂以研究均相反应。大的均匀区域可用于固体燃料的燃烧和多相反应的研究。使用双线原子荧光测温法测量温度，发现在燃烧器上方给定高度处的温度分布是平坦的。不同类型的光学诊断技术，如视线吸收或激光诱导荧光，可以很容易地应用在燃烧器中，并作为例子，两个典型的测量有关生物质燃烧证明。出版社：AIP Publishing
A novel multi-jet burner was built to provide one-dimensional laminar flat flames with a wide range of variable parameters for multipurpose quantitative optical measurements. The burner is characterized by two independent plenum chambers, one supporting a matrix of 181 laminar jet flames and the other supporting a co-flow from a perforated plate with small holes evenly distributed among the jets. A uniform rectangular burned gas region of 70 mm x 40 mm can be generated, with a wide range of temperatures and equivalence ratios by controlling independently the gas supplies to the two plenum chambers. The temperature of the hot gas can be adjusted from 1000 K to 2000 K with different flame conditions. The burner is designed to seed additives in gas or liquid phase to study homogeneous reactions. The large uniform region can be used to burn solid fuels and study heterogeneous reactions. The temperature was measured using two-line atomic fluorescence thermometry and the temperature profile at a given height above the burner was found to be flat. Different types of optical diagnostic techniques, such as line of sight absorption or laser-induced fluorescence, can be easily applied in the burner, and as examples, two typical measurements concerning biomass combustion are demonstrated. Published by AIP Publishing.