稻谷对稻壳低温燃烧制备 SiO2 中碳含量的影响

闫 升太¹, 尹 德政¹, 李 湘杰¹, 何 芳¹, Frank Behrendt²
1、山东理工大学 交通与车辆工程学院
2、柏林工业大学 能源工程研究院

摘要

为明确稻壳低温燃烧后灰中残炭的成因，在测算了稻壳中稻谷含量的基础上，采用采用同步热分析仪、马弗炉等对比分析稻壳、稻谷、稻米的低温氧化行为。结果表明：稻壳中稻谷含量约6.23%。在氧气气氛下加热稻壳、稻谷、稻米，320°C左右稻谷与稻米出现吸热反应，600°C时残炭率（约16%）远高于稻壳（炭几乎燃尽）。因此，稻谷的存在是稻壳在低温燃烧制备SiO2过程中碳含量高的主要原因之一。

关键词

稻壳；二氧化硅；稻谷；碳含量

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