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首页> 外文期刊>Environmental Engineering Science >Smoldering Combustion in Cigarette Smoking and Generation of Combustion Byproducts
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Smoldering Combustion in Cigarette Smoking and Generation of Combustion Byproducts

机译：吸烟中的阴燃和燃烧副产物的产生

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The process of cigarette combustion was analyzed in the framework of the filtration combustion theory, with a focus on the puff phase of the smoking cycle. Smoldering combustion regimes were examined by considering gas flow fields established within the cigarette during continuous draw, the kinetic regimes relevant to the propagation of smoldering combustion waves and the influence of the smoldering combustion regime on the fate of cigarette components. Particular emphasis was given to the assessment of the conditions that promote oxidative pyrolysis of the cigarette components, as opposed to inert pyrolysis of the same components in oxygen-starving atmospheres. The experimental activity was directed along a twofold pathway. On one hand, the process of smoldering combustion of a porous tobacco matrix was characterized under preset continuous draw conditions by means a purposely designed reactor. Experiments were directed to the characterization of the rate of propagation of combustion and thermal degradation fronts as well as on the prevailing nature—oxidizing vs. reducing—of conditions established during the thermal degradation of cigarette components. On the other hand en masse thermal analysis of tobacco was performed under thoroughly controlled conditions by means of a combined thermogravimetry/mass-spectrometry technique. Experiments were directed to assess the rate and yields of pyrolysis of selected cigarette components under a variety of test conditions. In particular, the relevance of the reaction environment (oxidizing versus inert) to the course of pyrolysis and to the process yield toward selected representative compounds was analyzed and discussed.
机译：在过滤燃烧理论的框架内分析了香烟燃烧的过程，重点是吸烟循环的抽吸阶段。通过考虑在连续抽烟过程中香烟内部建立的气流场，与闷燃燃烧波的传播有关的动力学规律以及闷燃燃烧状况对卷烟成分命运的影响，来研究闷燃燃烧状态。与在缺氧气氛中相同成分的惰性热解相反，特别强调了评估促进香烟成分氧化热解的条件。实验活动是沿着双重途径进行的。一方面，借助于预定设计的反应器，在预设的连续抽吸条件下表征了多孔烟草基质的阴燃燃烧过程。实验针对的是燃烧和热降解前沿的传播速率的表征，以及卷烟组件热降解过程中建立的主要条件（氧化与还原）。另一方面，通过热重/质谱联用技术，在完全受控的条件下进行了烟草的大规模热分析。进行了实验以评估在各种测试条件下所选香烟成分的热解速率和产率。特别地，分析和讨论了反应环境（氧化对惰性）与热解过程以及对所选择的代表性化合物的工艺产率的相关性。

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