柴油十六烷值测定压缩比法技术应用  

APPLICATION OF COMPRESSION RATIO METHOD IN THE DETERMINATION OF CETANE NUMBER OF DIESEL FUEL

作　　者：王海青[1] 张会成 Wang Haiqing;Zhang Huicheng(SI NOPEC Jiujiang Company,Jiujiang,Jiangxi 332004;SINOPEC(Dalian)Petrochemical Research Institute Co.,Ltd.)

机构地区：[1]中国石化九江分公司,江西九江332004 [2]中石化(大连)石油化工研究院有限公司

出　　处：《石油炼制与化工》2023年第2期77-81,共5页Petroleum Processing and Petrochemicals

摘　　要：柴油十六烷值测定的FCD-压缩比法利用标准燃料的十六烷值和对应的风量,通过大数据计算评价,归纳出十六烷值-风量幂函数方程式,制成十六烷值-风量表;通过检测柴油样品风量,并查阅十六烷值-风量表可得出该试样的十六烷值。FCD-压缩比法与CFR-ASTM法和FCD-内插法相比无显著性差异。与CFR-ASTM法相比,FCD方法(含FCD-压缩比法、FCD-内插法)实现了风量双向顺逆调整;与FCD-内插法相比,FCD-压缩比法利用测得的柴油试样风量可在十六烷值-风量表查出柴油试样十六烷值,而FCD-内插法须测试出两个标准燃料风量(试样风量必须介于两个标准燃料风量范围内)通过内插法计算试样十六烷值。用于柴油十六烷值测定的FCD-压缩比法具有高精密度和重复性。By using the standard fuels and the corresponding air volume,the power function equation of"cetane number-air volume"was summarized through big data calculation and evaluation,the cetane number and air volume was measured by FCD compression ratio method,and the cetane number of the diesel fuel sample was obtained by checking the cetane number of the sample.There was no significant difference between FCD compression ratio method,CFR-ASTM method and FCD interpolation method.Comparing FCD(including FCD compression ratio method and FCD interpolation method)with CFR-ASTM method,FCD method could realize bi-directional forward and inverse adjustment of air volume;compared with the FCD interpolation method,the FCD compression ratio method could find the cetane number of the diesel sample in the"cetane number-air volume meter",but the FCD interpolation method must test two standard fuel air volumes(the sample air volume must be within the range of two standard fuel air volumes)through the interpolation method to calculate the cetane number of the sample.The diesel cetane number determination by FCD compression ratio method had high precision and repeatability.

关 键 词：柴油 十六烷值 压缩比法 风量 幂函数曲线 内插 

分 类 号：TE626.24[石油与天然气工程—油气加工工程]