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