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热力发电  2012 

矿物质对玉米秸秆热解及动力学特性的影响

, PP. 37-41

Keywords: 玉米秸秆,矿物质,催化剂,热解特性,动力学特性,焦炭产率

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Abstract:

以玉米秸秆为研究对象,采用热重分析仪对经预处理和添加催化剂(dhc32、na2co3、cao、zno、caco3)的试样进行热解试验,考察了矿物质对原样、脱灰试样热解特性的影响,并采用一级反应对其相应热解动力学进行了计算分析。结果表明,脱灰生物质和加入催化剂的原样及水洗试样热解焦炭产率增加,而催化剂降低了酸洗玉米秸秆焦炭产率;经过预处理的玉米秸秆热解活化能大于原样活化能;与未添加催化剂试样相比,除了加入caco3的玉米秸秆热解活化能略有升高外,其它添加催化剂试样的热解活化能均有一定程度降低。

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