Experimental investigation of the effects of cycloparaffins and aromatics on the sooting tendency and the freezing point of soap-derived biokerosene and normal paraffins
Experimental investigation of the effects of cycloparaffins and aromatics on the sooting tendency and the freezing point of soap-derived biokerosene and normal paraffins
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DOI：
10.1016/j.fuel.2016.08.050
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发表时间：
2016-12-01
期刊：
影响因子：
7.4
通讯作者：
Neonufa, Godlief F.
中科院分区：
文献类型：
--
作者：
Duong, Long H.;Fujita, Osamu;Neonufa, Godlief F.
量化环烷烃和芳香烃与皂基生物煤油 (SBK) 和正链烷烃 (正链烷烃) 混合时对烟灰倾向和凝固点的影响，以确定改善 SBK 和正链烷烃燃料性能的方法。在这项研究中，SBK 源自椰子油的皂化和脱羧，主要由碳链长度为 C7 至 C17 的正链烷烃组成。选择十二烷、丁基环己烷和丁基苯分别作为SBK、环烷烃和芳烃中正链烷烃的替代成分。总烟灰体积是通过在环境条件下在芯馈式层流扩散火焰中的消光来测量的。根据喷气燃料标准，测得的燃料烟点与所需的烟灰趋势相关。使用JIS K2276测试方法测量凝固点。结果表明，与SBK或十二烷混合时，丁基环己烷对烟灰倾向的影响远小于丁基苯。相反，当与十二烷混合时，与丁基苯相比，丁基环己烷更能降低凝固点。当与SBK或十二烷混合时，丁基环己烷和丁基苯对凝固点的影响趋势相似。将 SBK 或十二烷与丁基环己烷混合，符合 ASTM D1655 规定的喷气燃料的烟点和凝固点要求。相反，将SBK或十二烷与丁基苯混合则不能满足这些要求。因此，考虑到烟灰倾向和凝固点之间的权衡，环烷烃被认为比芳烃更适合与 SBK 或正链烷烃燃料混合。 (C) 2016 Elsevier Ltd. 保留所有权利。
The effects of cycloparaffin and aromatic hydrocarbons when blended with soap-derived biokerosene (SBK) and normal paraffins (n-paraffins) on the sooting tendency and the freezing point are quantified to determine a method for improving the properties of SBK and n-paraffin fuels. In this study, SBK was derived from the saponification and dercarboxylation of coconut oil, and consists predominantly of n-paraffins with carbon chain lengths from C7 to C17. Dodecane, butylcyclohexane and butylbenzene were chosen as surrogate components for n-paraffins in SBK, cycloparaffins and aromatics, respectively. The total soot volume was measured from the light extinction at ambient conditions in a wick-fed laminar diffusion flame. The measured smoke point of the fuel was correlated with the required sooting tendency according to the jet fuel standard. The freezing point was measured using the JIS K2276 test method. The results show that butylcyclohexane affects the sooting tendency much lesser than butylbenzene when blended with SBK or dodecane. In contrast, butylcyclohexane decreases the freezing point more, as compared to butylbenzene, when blended with dodecane. Butylcyclohexane and butylbenzene have a similar trend of effect on the freezing point when blended with SBK or dodecane. Blending SBK or dodecane with butylcyclohexane matches the requirements of both smoke point and freezing point for jet fuel specified by ASTM D1655. Conversely, blending SBK or dodecane with butylbenzene does not meet these requirements. Therefore, given the tradeoff between sooting tendency and freezing point, cycloparaffins are considered more promising than aromatics for blending with SBK or n-paraffin fuels. (C) 2016 Elsevier Ltd. All rights reserved.