The detection and measurement of hydrocarbons is of high interest for a variety of applications, for example within the oil & gas industry from extraction throughout the complete refining process, as well as for environmental monitoring and for portable safety devices. This paper presents a highly sensitive, selective and robust tunable laser analyzer that has the capability to analyze several components in a gas sample stream. More specifically, a multi-gas system for simultaneous detection of C1 to iC5 hydrocarbons, using a room temperature distributed feedback interband cascade laser array, emitting in the 3.3 micrometer band has been realized. It combines all the advantages of the tunable laser spectroscopy method for a fast, sensitive and selective in-line multicomponent tunable laser analyzer. Capable of continuous and milliseconds fast monitoring of C1-iC5 hydrocarbon compositions in a process stream, the analyzer requires no consumables (e.g. purging, carrier gas) and no in-field calibration, enabling a low cost of ownership for the analyzer. The system was built, based on an industrial GasEye series platform and deployed for the first time in field at Preem refinery in Lysekil, Sweden in autumn 2018. Results of the measurement campaign and comparison with gas chromatography instrumentation is presented.

中文翻译：

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EXPRESS：用于石化工业中 C1-C5 碳氢化合物的同步和选择性分析的带间级联激光阵列

碳氢化合物的检测和测量对各种应用都具有重要意义，例如在石油和天然气行业，从提取到整个精炼过程，以及环境监测和便携式安全设备。本文介绍了一种高灵敏度、选择性和稳健的可调谐激光分析仪，它能够分析气体样品流中的多种成分。更具体地说，使用室温分布反馈带间级联激光器阵列，在 3.3 微米波段发射的同时检测 C1 至 iC5 碳氢化合物的多气体系统已经实现。它结合了可调谐激光光谱法的所有优点，是一种快速、灵敏和选择性的在线多分量可调谐激光分析仪。该分析仪能够连续和毫秒级快速监测工艺流中的 C1-iC5 烃成分，无需消耗品（例如吹扫、载气）和现场校准，从而降低了分析仪的拥有成本。该系统是基于工业 GasEye 系列平台构建的，并于 2018 年秋季在瑞典 Lysekil 的 Preem 炼油厂首次部署在现场。提供了测量活动的结果以及与气相色谱仪器的比较。