某煤质资料为(以质量计):C87%;H5.5%;O4.4%;N1.5%;S1.6

shuhaiku2019-12-17  10

问题 某煤质资料为(以质量计):C87%;H5.5%;O4.4%;N1.5%;S1.6;灰分含量25%;求这种煤干燥基的燃烧理论空气量( )。A 6.94m3/kg煤B 9.25m3/kg煤C 8.64m3/kg煤D 12.33m3/kg煤

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答案A

解析经计算每kg干燥无灰基燃料的各元素的量为C72.5mol,H55mol,S1mol,O1.75mol,理论需氧量为(72.5+55/4+1-1.75/2)mol/kg=86.38mol/kg转化为空气体积86.38×4.78×22.4/1000m3N/kg=9.25m3/kg(干燥无灰基)干燥基的燃烧理论空气量6.94m3/kg煤。您可能感兴趣的试题
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