Abstract: To improve the economic benefits of petrochemical corporations, more and more advanced process control systems are introduced to realize the accurate control for product quality and operation optimization. It is especially important for these systems to obtain the product quality information fast, accurately and reliably by online analyzers. The principle and technical advantages of Raman spectral analyzers are presented in this paper. For a domestic online Raman analyzer, the system configuration and its application in a gasoline blending process are discussed. Application results show that Raman spectral analysis technology can be widely applied in petrochemical, synthestic pharmaceutical and other industries, especially for the online compositional analysis of liquid mixtures, because of its rapidity and high accuracy as well as simple maintenance.

摘要： 为提高石化工业的经济效益，越来越多的先进控制系统被应用于工业生产过程，以实现产品质量“卡边”控制与操作优化。对于这些系统，特别需要在线分析仪为其提供快速、准确和可靠的质量反馈信息。本文介绍了拉曼光谱分析仪的工作原理与技术优势，结合某一国产化在线拉曼仪，探讨了分析系统的结构及其在汽油调合过程中的应用。实际应用结果表明：在线拉曼分析技术具有分析速度快、检测精度高、维护简单等优势，可广泛应用于各类石油化工、合成制药等生产过程，尤其适合于液相混合物成分的在线检测。

关键词: 拉曼光谱, 在线分析仪, 汽油调合, 石化工业, Raman spectroscopy, online analyzer, gasoline blending, petrochemical industry