Critical Solubility Temperature of Dimethyl Ether and Castor Oil

赵小明; 张立胜; 刘志刚

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Critical Solubility Temperature of Dimethyl Ether and Castor Oil

更新时间：2025-12-08

- Critical Solubility Temperature of Dimethyl Ether and Castor Oil
- Vol. 41, Issue 9, Pages: 1080-1082(2007)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK121
- Online First：10 September 2007，
  
  Published：2007
- 稿件说明：
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赵小明, 张立胜, 刘志刚. Critical Solubility Temperature of Dimethyl Ether and Castor Oil[J]. 2007, 41(9): 1080-1082.
DOI：

赵小明, 张立胜, 刘志刚. Critical Solubility Temperature of Dimethyl Ether and Castor Oil[J]. 2007, 41(9): 1080-1082. DOI：

摘要

为测定二甲醚与蓖麻油混合燃料的临界互溶温度

对互溶性实验装置进行了改进.利用改进后的装置

在蓖麻油的质量分数为2.01%～93.03%范围内

测量了16个状态点的蓖麻油与DME的临界互溶温度.结果表明:蓖麻油与DME临界互溶温度在221.46～256.62 K 之间.临界互溶温度随着蓖麻油浓度的增加而增加

在蓖麻油的质量分数为0.5时

临界互溶温度为245 K(-28.15 ℃)

能够满足高寒地区的使用.将临界互溶温度拟合为蓖麻油质量分数的函数

可供选择合适的DME发动机燃料润滑改进剂时使用.

Abstract

Adding castor oil to dimethyl ether can improve the lubricity of a compression ignition engine and reduce the wear of the precision pairs of an engine fuel system. The critical solubility temperatures for 16 different mass fractions of castor oil were measured with an improved experimental apparatus. The critical solubility temperature was from 221.46 K to 256.62 K when the mass fractions of castor oil varied from 0.020 1 to 0.930 3. The critical solubility temperature rises with the increase of the mass fraction. The critical solubility temperatures is 245 K(-28.15 ℃)when the mass fraction of castor oil is 0.5 and thus it could be used in cold areas. On the basis of the experimental results

a polynomial of critical solubility temperatures was fitted as a function of the mass fraction of castor oil.

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references

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Zhou Longbao, Wang Hewu, Jiang Deming. Study of performance and combustion characteristics of a DME fueled light duty direct injection diesel engine, SAE Paper 1999-01-3669[R]. Washington, USA: Society of Automotive Engineers Inc., 1999: 3-9.

Wu Jiangtao, Liu Zhigang, Bi Shengshan, et al. Viscosity of saturated liquid dimethyl ether from(213 to 343)K[J]. Journal of Chemical and Engineering Data, 2003, 48(2): 426-429.

Zhao Xiaoming, Ren Meifeng, Liu Zhigang. Critical solubility of dimethyl ether(DME)+diesel fuel and dimetheryl carbonate(DMC)+diesel fuel[J]. Fuel, 2005, 84:2380-2383.

吴江涛,刘志刚,王凤坤,等.一种新的高精度流体热物性测试用低温槽的研制[J].西安交通大学学报,2004,38(5):504-507.

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Wu Jiangtao, Liu Zhigang, Huang Haihua, et al. Development of new high accuracy measurement experimental system[J]. Journal of Xi'an JiaotongUniversity, 2003,37(1):5-9.

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