在线近红外光谱法测定乙烯装置进料石脑油的芳烃含量

介绍了在线近红外光谱测定乙烯装置进料石脑油的芳烃含量的方法.结果表明:在线近红外光谱法的分析结果能够完全满足生产中的精度要求,再现性和重复性优于ATSM D5443(多维气相色谱法)的要求.该方法除有测量速度快的优点之外,还具有分析成本低、无污染、操作简单方便等特点,在所建立模型的预测范围内,能对样品进行准确、经济的分析.

Determination of Aromatic Contents in Naphtha of Stream Cracking by On-line NIR

A rapid method for determining aromatic contents in naphtha of stream cracking by on-line NIR is described in this paper.The results by NIR method are coincident with those determined by reference method(MGC).The NIR method has higher repeatability and reproductivity than ASTM D 5443 method.The NIR method has advantages such as high-speed,lower analysis cost,no pollution and simplicity.In the prediction range of built calibration model,NIR method can obtain correct results.