梁淼,雷添,占小林,刘思奎,张兴全,邹恩凯,刘语煊,周瑞芳

• 1:郑州轻工业大学烟草科学与工程学院
• 2:江西中烟工业有限责任公司技术中心
• 3:湖北中烟工业有限责任公司襄阳卷烟厂

摘要(Abstract)：

以烟草废弃物为对象，利用结构组成分析及热重分析方法研究烘焙处理对其微观形貌、元素组成、热解和燃烧特性的影响规律。结果表明：烘焙处理可降低样品平衡含水率和氧元素含量，提升碳元素含量，高位热值由原始的17.15 MJ/kg提升至19.05 MJ/kg;烘焙过程中烟草废弃物发生明显的脱水和脱羧反应，随着烘焙温度的升高，样品色泽逐渐加深，且高温烘焙后的烟草废弃物表面出现气孔，微观结构被破坏。烘焙温度对烟草废弃物的热解过程影响明显，表现为降低挥发性成分析出阶段的失重率，热解残余质量由原始的27.00%提升至40.13%(240℃烘焙),随着烘焙温度升高，起始分解温度和终止分解温度均向高温方向偏移，综合热解指数逐步提高至2.07×10~(-4)%/(min·℃~2),主要热解失重阶段的高斯分峰拟合能够较好地反映样品中各组分的比例变化；高烘焙温度可提升烟草废弃物的引燃温度和燃尽温度，210℃烘焙样品的综合燃烧特性指数最高，为11.87×10~(-7)%/(min~2·℃~3)。各样品的热分解过程均符合化学反应控制模型，烘焙处理可改变样品主要失重阶段的反应活化能。烘焙处理可作为烟草废弃物的预处理手段以提升其能量密度，改善其热解燃烧特性。

关键词(KeyWords)： 烘焙处理;烟草废弃物;热解特性;动力学;热重分析

Abstract:

Keywords:

基金项目(Foundation): 中国烟草总公司重点研发项目(110202402037);; 江西中烟工业有限责任公司科研项目(赣烟工科计2022-04)

作者(Author): 梁淼,雷添,占小林,刘思奎,张兴全,邹恩凯,刘语煊,周瑞芳

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