Predicting the Low Temperature Performance of Hydrogenated Biodiesel-Ethanol-Diesel Ternary Fuel Blend Based on Thermodynamic Phase Equilibrium

doi:10.7652/xjtuxb201911008

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Predicting the Low Temperature Performance of Hydrogenated Biodiesel-Ethanol-Diesel Ternary Fuel Blend Based on Thermodynamic Phase Equilibrium

更新时间：2025-07-09

- Predicting the Low Temperature Performance of Hydrogenated Biodiesel-Ethanol-Diesel Ternary Fuel Blend Based on Thermodynamic Phase Equilibrium
- Vol. 53, Issue 11, Pages: 56(2019)
- 作者机构：
  
  江苏大学汽车与交通工程学院,江苏,镇江,212013
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201911008
  CLC： TK421
- Online First：10 November 2019，
  
  Published：2019
- 稿件说明：
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Predicting the Low Temperature Performance of Hydrogenated Biodiesel-Ethanol-Diesel Ternary Fuel Blend Based on Thermodynamic Phase Equilibrium[J]. 2019, 53(11): 56.
DOI：

Predicting the Low Temperature Performance of Hydrogenated Biodiesel-Ethanol-Diesel Ternary Fuel Blend Based on Thermodynamic Phase Equilibrium[J]. 2019, 53(11): 56. DOI： 10.7652/xjtuxb201911008.

摘要

为了研究加氢生物柴油-乙醇-柴油三元燃料的低温性能

基于热力学相平衡模型

计算了该三元燃料的析晶点和析晶量

同时对比了加氢生物柴油-柴油二元燃料的析晶点和析晶量

探究了乙醇对该二元燃料低温性能的影响。试验结果表明

相比加氢生物柴油-柴油二元燃料

加氢生物柴油-乙醇-柴油三元燃料的析晶点均有不同程度的降低

三元燃料PHC5E5、PHC10E10、PHC15E15、PHS5E5、PHS10E10和PHS15E15的析晶点分别降低了4.5、5.7、6.1、4.3、5.3、6.1 K

所对应三元燃料在不同温度下析晶量也有不同程度的降低。在初始析晶温度下

三元燃料中的乙醇与生物柴油同时开始析晶

这说明乙醇以共晶方式与高熔点组分同时析出

改变了高熔点组分在晶核形成、生长过程中的结晶趋向和结晶形态

延滞了三元燃料在低温过程中的析晶趋势; 未结晶的乙醇大量分布在燃料液相以及网状和片状晶体间隙之中

一定程度上提高了已结晶组分在基液中的溶解度。这两者共同改善了加氢生物柴油-乙醇-柴油三元燃料的低温性能。该研究为优化加氢生物柴油的低温性能提供了一种有效可靠的方法。

Abstract

Thermodynamic phase equilibrium model was adopted to study the low temperature performance of hydrogenated biodiesel-ethanol-diesel ternary blend

and the crystalli-ation point and crystalli-ation quantity were calculated. Furthermore

the effect of ethanol on the low temperature performance of hydrogenated biodiesel-diesel binary blend was also investigated by comparing the crystalli-ation points and crystalli-ation quantities of ternary blend and binary blend. It was revealed that compared with hydrogenated biodiesel-diesel binary blends

the crystalli-ation points of hydrogenated biodiesel-ethanol-diesel ternary blends were reduced to varying degrees. To be specific

the crystalli-ation points of PHC5E5

PHC10E10

PHC15E15

PHS5E5

PHS10E10 and PHS15E15 were reduced by 4.5

5.7

6.1

4.3

5.3 and 6.1 K

respectively

compared with the corresponding binary blends. Various decreases of crystalli-ation quantities for ternary blends at different temperatures were also observed in contra

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references

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