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OALib Journal期刊
ISSN: 2333-9721
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神木煤流化床气化带出细粉的特性
, PP. 1153-1159
Keywords: 神木煤焦,流化床气化,细粉焦,熔融特性,气化反应活性
Abstract:
？采用灰熔点测定仪、扫描电镜-能谱分析仪和热重分析相结合,研究了神木煤流化床气化带出细粉的灰熔融特性、粒径分布和气化反应活性。结果表明,神木煤流化床气化带出细粉中酸性成分的减少和碱性成分铁、钙等的增加,使神木煤流化床气化带出细粉的灰熔点比原煤低。神木煤流化床气化带出细粉具有较宽的粒径组成,呈现出明显的多峰状分布,带出细粉表面的元素分布存在很大的差异。随着带出细粉粒径的减小,细粉中的水分逐渐减少,灰分含量逐渐增大。气化飞灰的孔隙结构比高温煤焦更发达,具有比较丰富的中孔和大孔,导致带出细粉的反应活性比神木煤焦高。
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