多组分碳材料燃烧耦合匹配机制研究
毕业论文关键词 纤维素热解炭 燃烧特性 热分析 动力学
Title Investigation on Combustion Properties and Coupling Mechanismof Multicomponent Carbon Materials
Abstract In order to explore the heating materials of heat-not-burn cigarette, cellulose pyrolysis chars wasselected. Physiochemical properties, element compositions and combustion behaviors ofcellulose pyrolysis chars which are prepared in different pyrolysis conditions were characterizedby SEM, elemental analysis and thermogravimetric analysis respectively. Meanwhile,combustion behaviors of mixed chars in various proportions were characterized bythermogravimetric analysis. The results indicated that: With the pyrolysis temperature risen,the content of C are increased,the content of H and O are decreased, the ignition temperature andburnout temperature are increased, calorific value are increased, the reaction belongs to chemicalreaction control and the reaction order is 1; With the increase of proportion of hightemperature pyrolysis chars in the mixed chars, the ignition temperature and burnouttemperature are increased, the combustion range become wider, the extent of combustionbecome higher, calorific value are increased, the second and third peak position gradually movedto higher temperature region, the reaction belongs to chemical reaction control, the reactionorder is 1 and the activation energy is lowered.
Keywords cellulose pyrolysis char combustion properties thermogravimetric analyzekinetics
目 次
1 绪论 1
1.1 新型烟草制品研究现状 1
1.2 可再生能源与生物质 2
1.3 生物质热化学转化技术 2
1.4 生物质与生物质炭燃烧特性研究 3
1.5 论文研究目的与内容 4
2 材料与方法 5
2.1 实验药品与仪器 5
2.2 实验方法简介 5
2.3 数据处理方法简介 7
3 不同热解温度的纤维素热解炭比较 10
3.1 产率比较 10
3.2 元素组成比较 10
3.3 微观形貌比较 10
3.4 燃烧特性比较 12
3.5 小结 16
4 混合纤维素热解炭研究比较 17
4.1 纤维素热解炭混合均匀性验证 17
4.2 双组分纤维素热解炭混合燃烧特性研究 17
4.3 多组分纤维素热解炭混合燃烧特性研究 21
4.4 小结 25
结论 26
致谢 27
参考文献28
1 绪论WHO《烟草控制框架公约》提出禁止烟草烟雾在公共场所扩散，这一禁令给烟草行业带来了挑战，传统卷烟类产品的存在环境变得越来越严峻，与此同时，“吸烟与健康”的问题也备受人们的关注[1]，各国政府相继出台了对卷烟安全性指标更为严格的规定，这也推动了烟草行业更为深层次的发展与进步。新型烟草制品由于能较好地适应公共场所禁烟令，又能在一定程度上满足烟草消费者的嗜好，其市场需求快速增长。以炭为供热体的加热非燃烧型烟草制品具有“加热烟丝而非燃烧”的特点，它减少了烟草高温裂解燃烧产生的有害成分，使主流烟气化学组分的释放量大大降低。其主要特征为：（1）不需要燃烧，极大减少因燃烧产生的焦油和有害成分，相比传统卷烟危害性较小；（2）与常规卷烟引燃不同，它在抽吸间歇时烟丝处于非燃烧/非加热状态，因此侧流烟气和环境烟气也大幅度降低；（3）能在一定程度上适应和满足消费者的需要[2, 3]。