Coconut fatty acid distillate as novel feedstock for biodiesel production and its characterization as a fuel for diesel engine
Coconut fatty acid distillate as novel feedstock for biodiesel production and its characterization as a fuel for diesel engine
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椰子脂肪酸馏分作为生物柴油生产的新型原料及其作为柴油发动机燃料的表征
DOI：
10.1016/j.renene.2020.10.082
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发表时间：
2021
期刊：
影响因子：
8.7
通讯作者：
S. Ponnuvel
中科院分区：
文献类型：
--
作者：
K. Rajesh;M. Natarajan;P. K. Devan;S. Ponnuvel
以椰子油脂肪酸馏出物为原料，研究了其在生物柴油生产中的应用。研究了其作为柴油机燃料的特性。当醇油比为10：1、硫酸浓度为2.5%、反应温度为60 °C、反应时间为90 min时，生物柴油产率最高，为92.6%。然后进行酯交换反应，优化参数为甲醇与油的比例为8：1，1.5%氢氧化钾，60 °C，90 min。将20%、40%、60%和100%的CFAD生物柴油（CFAB）添加到柴油中以形成共混物CFAB 20、CFAB 40、CFAB 60和CFAB 100。发动机试验结果表明，CFAB 20的性能比其它CFAB混合燃料更接近柴油。CFAB 20的制动热效率（BTE）被发现比柴油低4.7%。氮氧化物排放量较高的所有生物柴油混合物，由于增强燃烧特性。但是，与柴油相比，CFAB 100在满负荷时的一氧化碳、碳氢化合物和烟度分别降低了50%、36.6%和42.9%。因此，可以推断CFAD是生物柴油生产的潜在来源。CFAB 20可用于具有可接受的BTE和降低的排放的柴油发动机，而无需任何发动机改造。
The coconut fatty acid distillate (CFAD) was used as a novel feedstock for biodiesel production in this investigation. Its characterization as fuel in diesel engine was also studied. A maximum biodiesel yield of 92.6% was obtained, when esterification is performed with 10:1 methanol to oil ratio, 2.5% sulphuric acid at 60 °C for 90 min. This is followed by transesterification with optimized parameters of methanol to oil ratio 8:1, 1.5% potassium hydroxide at 60 °C for 90 min. 20%, 40%, 60% and 100% of CFAD biodiesel (CFAB) was added to diesel to form blends CFAB20, CFAB40, CFAB60 and CFAB100. Engine test results showed that the performance of CFAB20 is closer to diesel than the other CFAB blends. The brake thermal efficiency (BTE) of CFAB20 was found to be 4.7% lesser than diesel. Nitrogen oxide emission is higher for all biodiesel blends due to enhanced combustion characteristics. However, carbon monoxide, hydrocarbon and smoke were reduced by 50%, 36.6% and 42.9% respectively for CFAB100 when compared to diesel at full load. Thus it is inferred that the CFAD is a potential source for biodiesel production. CFAB20 can be used in diesel engines with acceptable BTE and reduced emissions without any engine modification.