近红外光谱法测定双烯选择加氢油品组分的试验研究  

Experimental Study on the Determination of Components in Diene Selective Hydrogenation Oil Products by Near-Infrared Spectroscopy

作　　者：高峰 GAO Feng(Nanjing Jinling Petrochemical Alkyl Benzene Plant,Nanjing 210046,China)

机构地区：[1]南京金陵石化烷基苯厂,南京210046

出　　处：《中国资源综合利用》2024年第7期24-28,共5页China Resources Comprehensive Utilization

摘　　要：双烯选择加氢油品是脱氢装置的中间产物,其主要组分为烷烃、单烯、双烯和芳烃。液相色谱法是实验室应用成熟的测定方法,而近红外光谱法是一种新型测定方法,需要进行验证。试验采用近红外光谱仪采集不同反应阶段的双烯选择加氢油品光谱,初步建立待测组分烷烃、单烯、双烯和芳烃含量的测定模型,验证近红外光谱仪实时监测双烯选择加氢油品组分含量的可行性。结果显示,与成熟的液相色谱法相比,近红外光谱法测定误差较小,精密度高,能够快速准确地测定烷烃、单烯、双烯和芳烃含量。经F检验和t检验,两种方法的精密度没有显著性差异,各组分测定结果无显著差异。相比液相色谱法,近红外光谱法具有诸多优势,值得推广应用。Diene selective hydrogenation oil products are intermediate products of dehydrogenation units,mainly composed of alkanes,monoenes,dienes,and aromatics.Liquid chromatography is a mature laboratory measurement method,while near-infrared spectroscopy is a new measurement method that requires validation.The experiment uses a near-infrared spectrometer to collect spectra of diene selective hydrogenation oil products at different reaction stages,and establishes a preliminary measurement model for the content of alkanes,monoenes,dienes,and aromatics in the tested components to verify the feasibility of real-time monitoring of diene selective hydrogenation oil product component content by the near-infrared spectrometer.The results show that compared with mature liquid chromatography,near-infrared spectroscopy has smaller measurement errors,higher precision,and can quickly and accurately determine the content of alkanes,monoenes,dienes,and aromatics.After F test and t test,there is no significant difference in precision between the two methods,and there is no significant difference in the results of each component determination.Compared to liquid chromatography,near-infrared spectroscopy has many advantages and is worth promoting and applying.

关 键 词：近红外光谱法 液相色谱法 双烯选择加氢 油品 组分 测定 

分 类 号：TE626.21[石油与天然气工程—油气加工工程]