Diesel Combustion Characteristics of Single Compositions of Fatty Acid Methyl Esters

2005 ◽  
Author(s):  
Thet Myo ◽  
Kazunori Hamasaki ◽  
Eiji Kinoshita ◽  
Hiroshi Tajima
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Combustion Characteristics ◽  
Diesel Combustion ◽  
Acid Methyl

Combustion Characteristics of Biodiesel Derived from Palm and Rapeseed Oil

2013 ◽  
Vol 448-453 ◽  
pp. 1633-1636
Author(s):  
Xiu Chen ◽  
Lei Chen ◽  
Yin Nan Yuan ◽  
Yong Bin Lai ◽  
Xing Qiao ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Chemical Composition ◽  
Methyl Ester ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Combustion Process ◽  
Acid Methyl Ester ◽  
Combustion Characteristics ◽  
Combustion Characteristic ◽  
Acid Methyl

The chemical composition of palm and rapeseed biodiesel (fatty acid methyl ester, FAME) was analyzed by gas chromatography-mass spectrometry. Combustion characteristics of biodiesel were studied by thermogravimetry-differential scanning calorimetry and collision theory. Combustion characteristic index C was put forward for describing biodiesel combustion characteristic. The reactive atom combustion mechanism was put forward. Biodiesel combustion process comprised three steps, viz., volatilizing, dissociating and combining. First, biodiesel volatilizes, viz., FAME (liquid) volatilize and became FAME (gas). Second, FAME, O2 and N2 molecular were dissociated into C*, H*, O* and N* reactive atoms. Third, C*, H* and N* reacted, respectively, with O* to CO2, CO, H2O and NOx, and released energy. The study showed that the biodiesel was mainly composed of FAME: C14:0-C24:0, C16:1-C22:1, C18:2 and C18:3. Biodiesel had a good burnability. Combustion characteristic indexes of palm methyl ester (PME) and rapeseed methyl ester (RME) were 4.97E-05 and 3.65E-05, respectively. The combustion characteristic had relation to chemical composition. The combustion characteristic of biodiesel was better with increasing saturated fatty acid methyl esters and length of carbon-chain, and was poorer with increasing unsaturated fatty acid methyl esters and unsaturated degree. The combustion characteristic of PME was better than that of RME.

Combustion characteristics of fatty acid methyl esters derived from recycled cooking oil

Fuel ◽  
2007 ◽  
Vol 86 (17-18) ◽  
pp. 2810-2816 ◽  
Author(s):  
Yo-ping Greg Wu ◽  
Ya-fen Lin ◽  
Chang-Tang Chang
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Combustion Characteristics ◽  
Cooking Oil ◽  
Acid Methyl

Improving Flow Properties of Rapeseed-Based Biodiesel at Low Temperatures

2012 ◽  
Vol 512-515 ◽  
pp. 426-431
Author(s):  
Xiu Chen ◽  
Cui Ying Lu ◽  
Yong Bin Lai ◽  
Wu Jie Ge ◽  
Su Rong Li ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Low Temperatures ◽  
Fatty Acid Methyl Esters ◽  
Volume Fraction ◽  
Methyl Esters ◽  
Combustion Characteristics ◽  
Flow Properties ◽  
Cold Flow ◽  
Cold Flow Properties ◽  
Acid Methyl

The cold flow properties of rapeseed-based biodiesel (RME) were studied by gas chromatography-mass spectrometry (GC-MS), multifunctional low temperature tester and thermal analysis. Two approaches for reducing cold filter plugging point (CFPP) of RME were investigated: blending with winter petrodiesel, treating with cold flow improver (CFI) additives and the effect of CFI to combustion characteristics of RME. A good correlation model was proposed for prediction CFPP by RME blending ratio. The study shows that the RME was mainly composed of fatty acid methyl esters (FAME): C14:0–C24:0, C16:1–C22:1, C18:2 and C18:3. The mass fraction of saturated fatty acid methyl esters (SFAME) and unsaturated fatty acid methyl esters (UFAME) was 14.69% and 83.40%, respectively. The CFPP of RME was -7 °C. Blending with -10 petrodiesel (-10PD) decreased the CFPP to -12 °C. Treating with CFI additives (volume fraction ≤ 1.5%) decreased the CFPP of RME and RME/-10PD to -11 and -28 °C, respectively. Small amount of CFI additives hardly affected combustion characteristics of biodiesel. This study has effectively improved cold flow properties of biodiesel and provided guide for using biodiesel at low temperatures.

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