摘要：在15 kg/h分级煤气化试验台的循环流化床单元上开展试验,利用激光粒度仪、比表面积和孔隙度分析仪、X射线衍射仪和X射线荧光光谱法等分析方法,研究流态化条件对粉煤改性作用的影响。结果表明:在进入流化床的氧气体积流量和煤的质量流量之比为0. 31 m³/kg时,可以维持稳定的流态化过程,粉煤经过流态化煤气化改性,得到的半焦粒径减小,半焦的比表面积、总孔隙容积和碱性组分含量提高,灰熔融特征温度降低。

关键词：循环流化床煤气化；流态化气化改性；灰熔融性

Abstract: Experiments were carried out on a circulating fluidized bed of 15 kg /h partial gasification test rig．The influence of fluidized conditions on modification of pulverized coalwas studied by means of a laser particle size analyzer，a specific surface area and a porosity analyzer，an X-ray diffraction ( XＲD) and an X-ray fluorescence spectrometer ( XＲF) ．A stable fluidization process can be maintained when the oxygen coal mass ratio is 0．31．The particle size of char decreases．The specific surface area，total pore volume and basic components increase，the characteristic temperatures of ash melting decrease．

Keywords: circulating fluidized bed gasification; fluidized gasification modification; ash fusibility