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烟气气氛中生活垃圾的热解过程及热解动力学分析
发表时间：2013-10-31 浏览量：1831 下载量：784
| 全部作者： | 刘联胜，许岩，苟湘，杜聪 |
| 作者单位： | 河北工业大学能源与环境工程学院 |
| 摘 要： | 基于典型生活垃圾(municipal solid waste, MSW)热解-热解气燃烧循环工艺的基本构想，利用SDT Q600热重-热流系统分析白菜叶、橘皮、废纸板、塑料等单组分生活垃圾在空气、氮气和模拟烟气气氛下的热失重过程，并基于C-R（Coats-Redfern）方法计算分析样品热失重各个分区的反应动力学机制和热解动力学参数。研究发现：利用烟气组织生活垃圾热解可充分发挥CO2+C2CO反应的作用，可将样品的热解质量失重率提高10%以上，并有助于提高CO产量。载气气氛对生物质垃圾纤维素和半纤维素的热解反应没有影响，该热解反应过程受化学反应动力学F1机制主导；而木质素和焦炭的反应过程与载气气氛有关，烟气气氛下的热解反应受三向扩散反应D3机制主导。 |
| 关 键 词： | 燃烧学；生活垃圾；热解；烟气；氮气；热解动力学分析 |
| Title： | Pyrolysis process and kinetic analysis of MSW in flue gas |
| Author： | LIU Liansheng, XU Yan, GOU Xiang, DU Cong |
| Organization： | School of Energy and Environment Engineering, Hebei University of Technology |
| Abstract： | Based on the cycle technology of municipal solid waste (MSW) pyrolysis coupling pyrolysis gas combustion, the thermal decomposition processes of Chinese cabbage, orange peel, paper and plastics were investigated using SDT Q600 thermogravimetric-heat flow system under the air, nitrogen and flue gas atmosphere. The reaction kinetics mechanism and pyrolysis kinetic parameters were analyzed using C-R (Coats-Redfern) method. Compared with nitrogen atmosphere, the mass lose rate of MSW could be improved 10% in flue gas, which was caused by the reduction of CO2+C2CO. So the output of CO was enhanced. The carrier gas compositions had no influences on the pyrolysis of cellulose and hemicellulase in biologic garbage, and the pyrolysis process was dominated by F1 mechanism. However, the pyrolysis of lignine and carbon residue was related to carrier gas compositions. In flue gas, the pyrolysis process of lignine and carbon was dominated by D3 mechanism. |
| Key words： | combustion; municipal solid waste; pyrolysis; flue gas; nitrogen; pyrolysis kinetic analysis |
| 发表期数： | 2013年10月第20期 |
| 引用格式： | 刘联胜，许岩，苟湘，等. 烟气气氛中生活垃圾的热解过程及热解动力学分析[J]. 中国科技论文在线精品论文，2013，6（20）：1960-1967. |
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