煤液化馏分油密度和黏度与温度的关联研究  

Association study on temperature and the density and viscosity of distillates oil from coal liquefaction

作　　者：王迎春[1] 凌开成[1] 薛永兵[1] 申峻[1] 

机构地区：[1]太原科技大学化学与生物工程学院,山西省太原市030021

出　　处：《炼油技术与工程》2014年第11期62-64,共3页Petroleum Refinery Engineering

基　　金：国家重点基础研究发展规划(973)项目(2004CB217602);国家自然科学基金(20776094);山西省自然科学基金(2009011010-2)

摘　　要：常压下考察了煤液化油（CLO） 14个窄馏分的终馏点对密度和黏度的影响及其变化规律.选取CLO中几个典型煤液化油馏分分别在20℃和50℃下的密度值和黏度值,考察了煤液化油密度和黏度随温度的变化规律,结果表明：①小于200℃和大于280℃的馏分段,终馏点对密度影响较明显,200～ 280℃之间的馏分段影响不明显;CLO馏分密度随温度的升高而降低,并与温度呈很好的线性关系,其体积膨胀系数随温度的升高而降低.②CLO馏分液体动力黏度η与热力学温度T＆#39;之间的关系符合Andrade液体黏度关联式;黏度随温度的升高而降低,沸程低的馏分黏温性质较好,而沸程高的馏分黏温性质差,说明CLO馏分黏度受温度的影响较大.The impacts of end boiling points （EBP） of 14 narrow fractions of coal liquefaction oil （CLO） on density and viscosity and variation laws were investigated at atmospheric pressure. The density/viscosity of several typical CLO fractions at 20 ℃ and 50 ℃ temperature are selected to investigate the variation law of density and viscosity of CLO with temperature. The results indicate that, for the 〈 200 ℃ fractions and 〉 280 ℃ fractions, the EBP has an obvious impact on density. For the 200 -280 ℃ fraction, the impact is not great. The density of CLO goes down with rising temperature and maintains a good linear relation with temper- ature. Whereas, the volume expansion coefficient becomes smaller with rising temperature. The relation be- tween kinetic viscosity 7/of CLO and thermodynamic temperature T＇ conforms to the correlation of Andrade liq- uid viscosity. The viscosity becomes lower with rising temperature, the fractions of lower boiling range offer a good viscosity, while the fractions of higher boiling range have a poor viscosity-temperature property, indica- ting that the temperature has a greater impact on the viscosity of CLO.

关 键 词：煤液化油 密度 黏度 温度 

分 类 号：TQ529[化学工程—煤化学工程]