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Influence of the Mineral Content on the Emissivity of Hydrothermal Char
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2020-03-31 , DOI: 10.1002/ceat.201900623 Philipp Graeser 1 , Lukas Pörtner 1 , Martin Schiemann 1
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2020-03-31 , DOI: 10.1002/ceat.201900623 Philipp Graeser 1 , Lukas Pörtner 1 , Martin Schiemann 1
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The influence of minerals on solid fuel conversion is an important topic and has so far been addressed focusing mainly on the catalytic effects. Here, the impact of iron oxide on the emissivity of burning char particles was investigated. Synthetic, hydrothermally carbonized char was doped with SiO2 or with a mixture of SiO2 and Fe2O3. The sample was then exposed to an oxy‐fuel atmosphere in a laboratory reactor. An established pyrometer/infrared (IR) spectrometer setup was used to measure the size, temperature, and IR radiation of single burning particles. Based on these measurements, the spectral and total emissivity in the near‐IR (1.25–2.25 μm) and the total emissivity in the mid‐IR region (2.4–5.5 μm) were calculated. The results show that the iron content directly influences the emissivity of char during combustion.
中文翻译：
矿物质含量对水热焦炭发射率的影响
矿物对固体燃料转化的影响是一个重要的话题，到目前为止，主要集中在催化作用上的研究已经得到解决。在这里，研究了氧化铁对燃烧焦炭颗粒发射率的影响。合成的水热碳化炭用SiO 2或SiO 2和Fe 2 O 3的混合物掺杂。。然后将样品在实验室反应器中暴露于含氧气氛中。建立的高温计/红外（IR）光谱仪设置用于测量单个燃烧颗粒的大小，温度和IR辐射。基于这些测量，计算了近红外区的光谱和总发射率（1.25–2.25μm）和中红外区的总发射率（2.4–5.5μm）。结果表明，铁含量直接影响燃烧过程中炭的发射率。
更新日期：2020-03-31
中文翻译：
矿物质含量对水热焦炭发射率的影响
矿物对固体燃料转化的影响是一个重要的话题，到目前为止，主要集中在催化作用上的研究已经得到解决。在这里，研究了氧化铁对燃烧焦炭颗粒发射率的影响。合成的水热碳化炭用SiO 2或SiO 2和Fe 2 O 3的混合物掺杂。。然后将样品在实验室反应器中暴露于含氧气氛中。建立的高温计/红外（IR）光谱仪设置用于测量单个燃烧颗粒的大小，温度和IR辐射。基于这些测量，计算了近红外区的光谱和总发射率（1.25–2.25μm）和中红外区的总发射率（2.4–5.5μm）。结果表明，铁含量直接影响燃烧过程中炭的发射率。
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