Cold filter plugging point diesel fuel

The characteristics of diesel fuel taken into account in this area are the cloud point, the pour point, and the cold filter plugging point (CFPP). 

The cold filter plugging point (CFPP) is the minimum temperature at which a given volume of diesel fuel passes through a well defined filter in a limited time interval (NF M 07-042 and EN 116 standards). For conventional diesel fuels in winter, the CFPP is usually between —15 and —25°C. 

Cold Filter Plugging Point of Diesel and Heating Fuels... 

Standard test method for cold filter plugging point of diesel and heating fuels, ASTM Standard ASTM D 6371, ASTM International, West Conshohocken, PA, 2005. 

However, one of the limitations of using biodiesel fuel for diesel engines is higher cold flow properties compared with petroleum diesel fuel (4). Cold properties consist of cloud point, pour point, and cold filter plugging point. The cloud point is a temperature at which the fuel starts to thicken and cloud, the pour point is a temperature at which the fuel thickens and no longer pours, and the cold filter plugging point is the lowest temperature at which fuel still flows through a specific filter. These... 

Vegetable oils have also been considered in applications as fuels and attempts to maintain solutions of triacylglycerol oils at low temperatures have also been attempted. Blends of vegetable oil and lower alcohols have suitable viscosity for use in fuels, but they separate into two phases as temperature is lowered (62). Higher molecular weight alcohols can be used to lower the temperature of phase separation. In a soy oil number 2 diesel blend with ethanol, phase separation was deferred to 16°C whereas the cold filter plugging point was lowered to 24°C. 

An analogous property, the cold filter plugging point is suitable for estimating the lowest temperature at which diesel fuel will give trouble-free flow in certain fuel systems (ASTM D-6371, IP 309). In this test, either manual or automated apparatus may be used, which is cooled under specified conditions and, at intervals of 1°C, sample is drawn into a pipette under a controlled vacuum through a standardized wire mesh filter. As the sample continues to cool, the procedure is repeated for each 1°C below the first... 

The pour point (PP) - the temperature at which the system gels and becomes mechanically rigid, - is about 10°C for a typical untreated oil and may vary over a wide temperature range below 0°C in the case of untreated diesel fuels (Claudy et al., 1993). A parameter that directly correlates to the occurrence of low temperature technical problems caused by the wax crystals is the cold filter plugging point (CFPP). This parameter corresponds to the temperature when plugging occurs in a 45 4m filter under standardized conditions. For an untreated diesel fuel the CFPP is normally a few degrees higher than the PP. 

Claudy, P. Letoffe, J.M. Bonardi, B. Vassilakis, D. Damin, B. (1993). Interactions between n-Alkanes and Cloud Point-Cold Filter Plugging Point Depressants in a Diesel Fuel. A Thermodynamic Study. Fuel, Vol.72, No.6, pp.821-827, ISSN 0016-2361... 

CEN (European Conunittee fa- Standardization), Brussels, Belgium. Various Standards EN 116 Diesel and Domestic Heating Fuels - Determination of Cold Filter Plugging Point. EN 14112 Fat and Oil Derivatives. Fatty Acid Methyl Esters (FAME). Determination of Oxidation Stability (Accelerated Oxidation Test) EN 14213 Heating Fuels. Fatty Add Methyl Esters (FAME). Requirements and Test Methods EN 14214 Automotive Fuels - Fatty Add Methyl Esters (FAME) fa- Diesel Engines - Requirements and Test Methods, EN 15751 Automotive Fuels. Fatty Add Methyl Ester (FAME) Fuel and Blends with Diesel Fuel. Determination of Oxidation Stability by Accelerated Oxidation Method. CEN, Brussels, Belgium. 

Diesel Cold How Test Development Group. 1991. Method for determining the simulated filter plugging point of middle distillate fuels. Abingdon, England. 

The freezing point (pour point, doud point, cold filter plugging) of jet fuel and diesel is the lowest temperature at which the fuel remains free of sohd hydrocarbon... 

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