The Effect of Palm Oil Biodiesel-Neat Diesel (B10-B50) Mixing Ratio on Physical Mechanism of Fuel Deposits Developed on Heated Al Surface

Q3 Chemical Engineering
F. Jikol, Mohd Zaid, Y. M. Arifin, Mohd Azli Salim, S. Herawan
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引用次数: 0

Abstract

To improve the physicochemical properties of biodiesel, researchers have been mixing pure biodiesel with neat diesel to produce blended fuels with certain blending ratios. However, one of the issues when combining ordinary diesel with biodiesel is the formation of deposits. In this study, the hot surface deposition test (HSDT) method was employed to investigate the effect of the mixing ratio on the deposition of diesel fuel (DF) and its blends with Malaysian palm oil biodiesel (B10-B50). The accumulated fuel deposits produced by the test fuels up to ND=16000 droplets were studied based on visual inspection and the use of a scanning electron microscope (SEM) to study the deposits’ composition. Generally, the higher the blend ratio, the more deposits were formed on the hot plate. Furthermore, a greater mass of deposits was produced during the wet condition (timp=3 seconds) test compared to that of the dry condition (timp=7 seconds) test. Deposits’ distribution area produced by the B30, B40, and B50 fuels were larger and appeared to be oily/greasy. Meanwhile, deposits produced by DF, B10, and B20 seem to be dry. The radius of the solid deposit was also larger during the wet condition test. For dry condition test at droplet ND=16000, the mass of deposit produced was 3.7mg (4mm radius) for DF, 3.9mg (5mm radius) for B10, 17.1mg (9mm radius) for B20, 24.0mg (9mm radius) for B30, 25.1mg (9mm radius) for B40, and 28.8mg (7mm radius) for B50. On the other hand, for the wet condition test, the mass of the deposit generated was 4.4mg (4mm radius) for DF, 8.9mg (7mm radius) for B10, 20.4mg (11mm radius) for B20, 31.1mg (13mm radius) for B30, 62.4mg (15mm radius) for B40, and 58.2mg (13mm radius) for B50, respectively. Additionally, the SEM analysis showed that the deposits’ composition for each test fuel primarily consists of carbon (>65%), with relatively lower oxygen concentration (<35%). The dry and wet condition also has a significant impact on the various deposits’ morphology.
棕榈油生物柴油-肉柴油(B10-B50)混合比对加热铝表面形成燃料沉积物的物理机制的影响
为了改善生物柴油的物理化学特性,研究人员一直在将纯生物柴油与纯柴油混合,按一定的混合比例生产混合燃料。然而,将普通柴油与生物柴油混合时的一个问题是沉积物的形成。本研究采用热表面沉积试验(HSDT)方法,研究了混合比对柴油(DF)及其与马来西亚棕榈油生物柴油(B10-B50)混合后沉积物的影响。通过目视检查和使用扫描电子显微镜(SEM)研究沉积物的成分,研究了测试燃料产生的累积燃料沉积物,沉积物液滴的ND=16000。一般来说,混合比越高,在热板上形成的沉积物就越多。此外,与干燥条件(timp=7 秒)试验相比,湿条件(timp=3 秒)试验产生的沉积物质量更大。B30、B40 和 B50 燃料产生的沉积物的分布面积更大,而且看起来是油性/油腻的。与此同时,DF、B10 和 B20 产生的沉积物看起来比较干燥。在湿态测试中,固体沉积物的半径也较大。在液滴 ND=16000 的干态测试中,DF 产生的沉积物质量为 3.7 毫克(半径 4 毫米),B10 为 3.9 毫克(半径 5 毫米),B20 为 17.1 毫克(半径 9 毫米),B30 为 24.0 毫克(半径 9 毫米),B40 为 25.1 毫克(半径 9 毫米),B50 为 28.8 毫克(半径 7 毫米)。另一方面,在湿条件测试中,DF 产生的沉积物质量分别为 4.4 毫克(半径为 4 毫米)、B10 为 8.9 毫克(半径为 7 毫米)、B20 为 20.4 毫克(半径为 11 毫米)、B30 为 31.1 毫克(半径为 13 毫米)、B40 为 62.4 毫克(半径为 15 毫米)和 B50 为 58.2 毫克(半径为 13 毫米)。此外,扫描电镜分析表明,每种测试燃料的沉积物成分主要由碳(>65%)组成,氧浓度相对较低(<35%)。干湿条件对各种沉积物的形态也有显著影响。
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来源期刊
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
2.40
自引率
0.00%
发文量
176
期刊介绍: This journal welcomes high-quality original contributions on experimental, computational, and physical aspects of fluid mechanics and thermal sciences relevant to engineering or the environment, multiphase and microscale flows, microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.
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