黄连木生物柴油及其调合油低温流动性的改善研究  

STUDY ON IMPROVING THE COLD FLOW PROPERTIES OF PISTACIA CHINENSIS METHYL ESTER AND ITS BLENDING OILS

作　　者：金鑫[1] 陈秀[1] 来永斌[2] 张玉琦[1] 舒俊锋 汪波[2] 袁梦鸿 呼嘉敏 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001 [2]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《精细石油化工》2015年第1期69-72,共4页Speciality Petrochemicals

基　　金：国家自然科学基金项目(51076069);安徽省自然科学基金项目(14008085ME109)

摘　　要：利用气-质联用仪测定了黄连木生物柴油(PCME)的化学组成,利用冷滤点测试仪和运动黏度测试仪研究PCME及其调合油的低温流动性;通过添加低温流动改进剂(CFI)来改善PCME及其调合油的低温流动性。结果表明,PCME中饱和脂肪酸甲酯和不饱和脂肪酸甲酯的质量分数分别为18.6%和81.09%,冷滤点(CFPP)为-6℃,40℃时其运动黏度为6.06mm2/s;PCME及其调合油的运动黏度随着温度的降低而逐渐增大,在调合比例为30%时,调合油的CFPP最低降至-12℃;添加0.4%(体积分数)柴油降凝剂时,调合比例分别为5%和7%时,CFPP分别从-3,-3℃降至-23,-21℃。The chemical compositions of pistacia chinensis methyl ester （PCME） were analyzed by the gas chromatograph-mass spectrometer, The cold flow properties of PCME and its blending oils were studied by cold filer plugging point tester and viscosity tester. Adding CFI in blending oils is a way to improve the cold flow properties of PCME and its blending oils. The study shows that the contents of saturated fatty acid methyl ester and unsaturated fatty acid methyl ester of PCME are 18.6 % and 81. 09%, respectively. The CFPP of PCME is -6℃ , and the kinematic viscosity of PCME is 6.06 mm^2/ s at 40 ℃. The CFPP of blending oil decreases to -12 ℃ when the ratio of PCME is 30%. With tem- perature decreasing, the kinematic viscosity of PCME and blending oils increases. Adding 0.4% （volume fraction） of PDD, the CFPP of B5 and B7 decreased from -3, -3 ℃to -23,-21℃, respectively.

关 键 词：生物柴油 低温流动性 运动黏度 低温流动改进剂 

分 类 号：TE667[石油与天然气工程—油气加工工程]