Method for evaluating the low temperature flow properties of mineral insulating oils after ageing

2015 ◽  
Keyword(s):  
Low Temperature ◽  
Flow Properties

scholarly journals Improvement of low-temperature characteristics of biodiesel by additivation

2019 ◽  
Vol 73 (2) ◽  
pp. 103-114 ◽  
Author(s):  
Ivan Tasic ◽  
Milan Tomic ◽  
Aleksandra Aleksic ◽  
Natasa Djurisic-Mladenovic ◽  
Ferenc Martinovic ◽  
...  
Keyword(s):  
Low Temperature ◽  
Pour Point ◽  
Rapeseed Oil ◽  
Winter Period ◽  
Cold Filter Plugging Point ◽  
Flow Properties ◽  
Temperature Characteristics ◽  
Cold Flow ◽  
Different Types ◽  
Biodiesel Quality

In manipulation and utilization of biodiesel and its mixtures, especially in the winter period, one of the most serious problems is relatively poor low-temperature flow properties. Classic methods of transesterification solve this problem, so biodiesel quality can be improved only by additives (cold flow improvers). This research examines the effect of commercial additives on the improvement of low-temperature characteristics of biodiesel. Namely, cold filter plugging point (CFPP), pour point (PP) and cloud point (CP) were tested in accordance with EN 116 and ISO 3015 standards. The influence of additives on different types of biodiesel, its different age and influence on the mixture of 5 % biodiesel and fossil diesel were examined. A better effect of additivation to "fresh" biodiesel (made using rapeseed oil), compared to "aged" biodiesel was noted. Improvement of additivation was achieved by mixing additives with an organic solvent (toluene). It was demonstrated that different types of additives are suitable for different types of biodiesel as well as mixtures of biodiesel and fossil diesel. Additives in which solvent is compatible with the type of biodiesel were found to exhibit better performance.

Improvement of Low Temperature Properties of Jatropha-Corn Biodiesel Blend with the Addition of Acrylic Co-Polymer

2013 ◽  
Vol 781-784 ◽  
pp. 2480-2483
Author(s):  
Ho May Yun ◽  
Junaid Ahmad ◽  
Suzana Yusup ◽  
Ruzaimah Nik Mohammad Kamil ◽  
Vui Soon Chok ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Low Temperature ◽  
Edible Oils ◽  
Biodiesel Production ◽  
Cold Filter Plugging Point ◽  
Flow Properties ◽  
Blend Ratio ◽  
Cold Flow ◽  
Biodiesel Blend ◽  
Flow Improver

Inevitable low temperature properties is one of the major problems in commercialization of pure biodiesel. Increasing the usage of edible oil in biodiesel production creates the fuel versus food controversy. This paper involves the study of cold flow properties of edible and non-edible oils biodiesel. Corn biodiesel and jatropha biodiesel are blended respectively. The blend ratio of corn methyl ester and jatropha methyl ester CME: JME (20:80) has the oxidative stability of 6.42 hours and cold filter plugging point value of-2 oC. An additive of acrylic co-polymer as the cold flow improver (CFI) reduced the CFPP value from-2 oC to-6 oC which results in better low temperature properties of corn-jatropha biodiesel blend.

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