稻壳在循环流化床中燃烧现象的分析

为了研究稻壳在循环流化床中的燃烧特性，在生物质循环流化床试验台上对稻壳进行了燃烧试验。通过对试验过程中各测点温度及压力变化的分析，探讨了二次风和循环回料对稻壳在循环流化床燃烧炉内燃烧过程的影响。试验结果表明：二次风可以促进挥发分在稀相区的燃烧，对提升稀相区的温度作用明显；正常循环回料使得温度沿炉膛高度均匀分布。所得结论对生物质循环流化床的试验研究及实际运行有一定的参考意义。

Analysis of rice husk combustion phenomena in circulating fluidized bed

In order to study the characteristic of rice husk combustion in circulating fluidized bed(CFB),the combustion experiments are carried out.By analyzing the change of temperature and pressure,the influence of secondary air and circulation on the combustion in CFB is discussed.The experimental results indicate that secondary air can accelerate volatile combustion in dilute phase zone and raise the temperature remarkably.Furthermore,stable and continuous circulation can make temperature proportional distributing in CFB.These conclusions are beneficial for experimental research and practical operation of biomass CFB.