OALib Journal期刊
ISSN: 2333-9721
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污泥与煤共热解过程中磷元素的挥发规律研究
, PP. 666-671
Keywords: 污泥,煤,热解,磷
Abstract:
?污泥灰分中磷元素含量明显高于煤,其中主要的晶体态含磷化合物为磷酸铁钙和少量的磷酸铝。利用高频加热反应装置考察了污泥-神府煤混合物快速热解过程中磷元素挥发规律。结果表明,污泥-神府煤混合物热解后磷元素主要存在于热解焦中。磷元素挥发比例随污泥添加比例的增加先升高后降低,随热解温度的升高而增加。热解温度不高于1100℃时,混合物中以有机磷的挥发为主,磷元素挥发比例不高于3.2%。热解温度高于1200℃后无机磷中磷元素挥发明显,1300℃下最高有33.0%的磷元素随热解气体挥发出。
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