用近红外分析方法测定重质馏份油的化学族组成  

Determination of Chemical Composition in HVGO by Near-Infrared Spectroscopy

作　　者：杨素[1] 黄贤平[1] 杨苏平[1] 

机构地区：[1]扬子石化股份有限公司研究院,南京210048

出　　处：《红外》2006年第4期20-24,共5页Infrared

摘　　要：测定了扬子公司不同厂的重质馏份油的近红外谱图,以偏最小二乘方法为数学工具,通过色-质连用法取得基础数据,建立重质馏份油的近红外光谱族组成模型。采用该模型测定未知样品与色-质连用法的测定结果相比,饱和烃中正构烷烃、异构烷烃、环烷烃的质量分数和芳烃质量分数的相关系数分别为0．9857、0．9854、0．9968 和0．9984。分析结果表明,两种分析方法的结果一致。近红外方法重现性好,分析速度快,结果准确,且不消耗有机溶剂。A new analytical method based on FT-NIR Spectroscopy in the 11000cm^-1～6000cm^-1 region was used to determine the chemical composition in HVGO products from different factories of YangZi. The NIR spectra of HVGO of different origin and processing schemes were recorded. A partial least squares （PLS） technique was used to construct the mathematical model and the latter could correlate the NIR spectral features with the chemical composition analyzed by HPGS/MS-FID. Twenty unknown samples were tested by the NIR method and the conventional method. The correlation coefficients of the results tested by two methods were 0.9857, 0.9854, 0.9968 and 0.9984 respectively for correctitude structure content, strange structure content, cycloparaffin content of saturates content and aromatics content. The NIR method has the advantages of better repeatability, shorter time of testing and simpler operation and does not consume solvent. It can be used as an alternative for determining the chemical composition of HVGO.

关 键 词：重质馏份油 化学族组成 近红外光谱 偏最小二乘方法 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]