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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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增压o2/co2气氛下煤燃烧特性实验研究
, PP. 408-413
Keywords: o2/co2,燃烧特性,压力,热重分析,动力学
Abstract:
？增压o2/co2燃烧是一种可高效分离回收co2的新兴燃烧技术，其燃烧机理与常压空气、常压o2/co2燃烧存在较大差异。在加压热重分析仪上研究了增压条件下总压、氧浓度、气氛及粒径等反应参数对美国烟煤和淮北无烟煤燃烧特性的影响，确定了煤的着火温度，并对其进行燃烧动力学分析。结果表明，增压o2/co2气氛下，随着压力或氧浓度的增加，dtg曲线向低温区移动，煤样整体燃烧速率加快。压力提升、氧浓度增加及煤粉细化均可改善o2/co2气氛下煤样的着火特性。常压o2/co2气氛下煤粉燃烧基本属于一级反应；增压o2/co2气氛下，低温区属于0.5级反应，而高温区属于1.5级反应。
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