Liquid rheology study on refined rapeseed oil

The rapeseed oil extracted from the mature seeds was purified by refining processing,and the rheological characteristic analysis of the viscosity and dynamic shear rate at gradient temperatures was made.The result shows that at 20,40,60 and 80 ℃ respectively,when the shear rate gradually rises,the torque increases accordingly but its viscosity does not vary distinctly.The result suggests that when rapeseed oil is used as the raw of edible oils and industries,the working procedures at high temperature will n...     

油改煤集中供热涉及环境问题探究

供热燃油锅炉已经逐渐由燃煤锅炉所替代,即油改煤,已成为必然的趋势,取代涉及的环境问题是大家关注的热点.     

新疆黑山煤液化重质油组成结构研究

用气相色谱/质谱联用仪（GC/MS）分析馏程为360~380℃的新疆黑山煤液化重质油,检测出的主要成分为稠环芳烃及其衍生物,此外还有少量正构烷烃和以酮的形式存在的含杂原子化合物。用硅胶柱层析法分离煤液化重质油,所得洗脱馏分中质量分数较大的为石油醚洗脱馏分和石油醚/乙酸乙酯（体积比为2∶1）混合溶剂洗脱馏分,表明煤液化重质油的主要成分呈弱极性。各洗脱馏分用GC/MS分析,其可测成分与直接检测相比,多检测出偶碳烯烃、邻苯二甲酸酯类和含氮化合物等,表明合适的预分离对提高GC/MS分析的灵敏度非常重要。     

Non-synchronous response bifurcation analysis for a rigid bearing system using oil film forces database

0　ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｄｙｎａｍｉｃｂｅｈａｖｉｏｒｏｆａｒｏｔｏｒｂｅａｒｉｎｇｓｙｓｔｅｍｈａｓｂｅｅｎｅｘｔｅｎｓｉｖｅｌｙｉｎｖｅｓｔｉｇａｔｅｄｂｙｆｏｌｌｏｗｉｎｇｌｉｎｅａｒａｎａｌｙｓｉｓｐｒｏｃｅｄｕｒｅｓ.Ｔｈｅｂｅａｒｉｎｇｏｉｌｆｉｌｍｆｏｒｃｅｓａｒｅｄｅｓｃｒｉｂｅｄｂｙｆｏｕｒｓｔｉｆｆｎｅｓｓｃｏｅｆｆｉｃｉｅｎｔｓａｎｄｆｌｏｕｒｄａｍｐｉｎｇｃｏｅｆｆｉｃｉｅｎｔｓ.Ｈｏｗｅｖｅｒ,ｉｔｉｓｓｔｉｌｌｎｏｔｐｏｓｓｉｂｌｅｔｏａｃｈｉｅｖｅｔｈｅｓａｔ…     

Experimental investigation of power output and soot emission for micro-emulsification diesel oil using for vehicle

The micro-emulsification diesel oil with water dopant of 5%,10% and 15% was prepared using the NAA micro-emulsification compound developed by the authors.The engine bench testing was carried out on the 485QB diesel engine.From the testing results of velocity,loading and exhaust gas,it can be seen that the power decreases and the fuel consumption increases using the micro-emulsification diesel oil.But based on the actual fuel consumption,the use of emulsification diesel with water dopant of 10% can get the effect of oil saving;while with water dopant of more than 15%,it doesn't work evidently.The investigation shows that using the micro-emulsification diesel oil,we can reduce the exhaust gas pollution and receive better environment benefit.