| 摘要:研究了各种比例的聚甲氧基二甲醚(PODE)和柴油的互溶性，重点考察了环境温度、含水量和互溶剂对它的影响。结果表明:在常温20℃下，各种浓度的PODE与柴油的混合溶液性能稳定；环境温度降低到5℃时， PODE含量不高于20%的混合液不出现明显的密度分层现象，但含40%、60%、80%PODE的混合溶液出现明显的密度分层；环境温度进一步降低到0℃后，含10%PODE以上的混合液都发生明显的密度分层。水在各种浓度的PODE与柴油混合溶液中直接析出，对混合溶液的相容性没有明显影响。在所选互溶剂中，丁醇能有效降低PODE/柴油的密度分层温度，具有良好的助溶效果，且丁醇浓度越大，助溶效果越好。 |
| 关键词: 聚甲氧基二甲醚 柴油 互溶性 |
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| Research on Compatibility of PODE and Diesel Fuel |
| Xiao Xiao,Zheng Yi,Wang Yunfang,Zhang Wugao |
| Key Laboratory for power Machinery and Engineering of the Ministry of Education,Shanghai Jiao Tong University, Shanghai 200240;College of Chemical Engineering ,China University of Petroleum , Shandong Qingdao 266555 |
| Abstract:The compatibility of PODE/ diesel mixture with different proportions was studied, with the emphasis on the influence of temperature and moisture content as well as the miscible additives on the compatibility. The results indicated that PODE could be well solved in diesel fuel when the temperature was no lower than 20℃, and the mixtures were stable with arbitrary proportions, no stratification appeared as time extend; when the temperature was down to 5℃, there was no density stratification when the content of PODE was no more than 20%,but the mixtures with more PODE, like 40%, 60%, or 80%, were stratified obviously; when the temperature was further lowered to 0℃, density stratification occurred apparently with PODE more than 10%. The research of water effects on the stability of the mixture showed that, water was separated out directly in arbitrary concentrations of the mixture, which had no visible effect on the compatibility. It was found that Butanol could effectively strengthen the temperature stability of the mixture, and the mixture compatibility was better when more butanol was in the mixture. |
| Key words: PODE diesel fuel compatibility |
