Reconsideration of regulated contamination limits to improve filterability of biodiesel and blends with diesel fuels
Reconsideration of regulated contamination limits to improve filterability of biodiesel and blends with diesel fuels
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DOI：
10.1016/j.renene.2020.06.079
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发表时间：
2020-10-01
期刊：
影响因子：
8.7
通讯作者：
Agudelo, John R.
中科院分区：
文献类型：
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作者：
Cardeno, Fernando;Lapuerta, Magin;Agudelo, John R.
为了实现2030年的EU/2001/2018指令目标，目前从可持续原料开发生物柴油燃料的主要限制之一是过滤性问题。已发现生物柴油燃料中的污染物（例如饱和单酸甘油酯、钠皂和游离甾醇葡糖苷）堵塞车辆、燃料分配器和其它工业设备中的燃料过滤器，这减少了过滤器的寿命，并且可能导致燃料不足，发动机操作困难和可能的燃料喷射设备损坏。从掺有这些污染物并随后与柴油燃料混合的蒸馏生物柴油燃料制备满足质量标准的样品。测定了过滤器堵塞倾向、冷浸过滤试验和总污染试验。结果发现，过滤性能的影响总是由最高的污染物含量，无论是单独和协同。总污染试验结果不确定。得出以下结论：（1）应寻求提高过滤性和总污染物方法的精度;（2）未来生物柴油法规应限制游离甾醇葡萄糖苷、饱和单甘酯和钠皂含量;（3）目前世界各地的生物柴油标准不保证过滤性，这可能导致燃料过滤器过早堵塞。(c)2020爱思唯尔有限公司保留所有权利。
For the fulfillment of the Directive EU/2001/2018 targets for 2030, one of the main restrictions in the development of biodiesel fuels from sustainable feedstocks are currently the filterability problems. Contaminants such as saturated monoglycerides, sodium soaps and free steryl glucosides in biodiesel fuels have been found to clog fuel filters in vehicles, fuel dispensers and other industrial equipment which reduces the lifetime of the filters, and may result in fuel starvation, with engine operating difficulties and possible fuel-injection equipment damage. From a distilled biodiesel fuel spiked with these contaminants and subsequently blended with diesel fuel, samples fulfilling quality standards were prepared. filter blocking tendency, cold soak filtration test and total contamination tests were measured. It was found that filterability properties were affected always by the highest contaminant contents, both individually and synergistically. Total contamination test presented inconclusive results. The following conclusions were achieved: i) improvements in the precision of filterability and total contamination methods should be searched; ii) future regulations of biodiesel fuels should limit the free sterylglucoside, saturated monoglyceride and sodium soap contents; iii) the current biodiesel fuel standards around the world do not secure the filterability properties, which could cause premature fuel filter clogging. (c) 2020 Elsevier Ltd. All rights reserved.