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一种基于量子级联激光器的气体传感器原型在石化工艺气流中进行亚百万分之一体积比硫化氢测量的应用。

Implementation of a quantum cascade laser-based gas sensor prototype for sub-ppmv HS measurements in a petrochemical process gas stream.

作者信息

Moser Harald, Pölz Walter, Waclawek Johannes Paul, Ofner Johannes, Lendl Bernhard

机构信息

Institute of Chemical Technologies and Analytics, Vienna University of Technology, 1060, Vienna, Austria.

OMV R&M GmbH, 2320, Schwechat, Austria.

出版信息

Anal Bioanal Chem. 2017 Jan;409(3):729-739. doi: 10.1007/s00216-016-9923-z. Epub 2016 Sep 17.

DOI:10.1007/s00216-016-9923-z
PMID:27640208
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5233737/
Abstract

The implementation of a sensitive and selective as well as industrial fit gas sensor prototype based on wavelength modulation spectroscopy with second harmonic detection (2f-WMS) employing an 8-μm continuous-wave distributed feedback quantum cascade laser (CW-DFB-QCL) for monitoring hydrogen sulfide (HS) at sub-ppm levels is reported. Regarding the applicability for analytical and industrial process purposes aimed at petrochemical environments, a synthetic methane (CH) matrix of up to 1000 ppmv together with a varying HS content was chosen as the model environment for the laboratory-based performance evaluation performed at TU Wien. A noise-equivalent absorption sensitivity (NEAS) for HS targeting the absorption line at 1247.2 cm was found to be 8.419 × 10 cm Hz, and a limit of detection (LOD) of 150 ppbv HS could be achieved. The sensor prototype was then deployed for on-site measurements at the petrochemical research hydrogenation platform of the industrial partner OMV AG. In order to meet the company's on-site safety regulations, the HS sensor platform was installed in an industry rack and equipped with the required safety infrastructure for protected operation in hazardous and explosive environments. The work reports the suitability of the sensor prototype for simultaneous monitoring of HS and CH content in the process streams of a research hydrodesulfurization (HDS) unit. Concentration readings were obtained every 15 s and revealed process dynamics not observed previously.

摘要

报道了一种基于波长调制光谱二次谐波检测（2f-WMS）的灵敏、选择性且适用于工业的气体传感器原型，该原型采用8μm连续波分布反馈量子级联激光器（CW-DFB-QCL）来监测亚ppm水平的硫化氢（HS）。考虑到其在石化环境下的分析和工业过程应用适用性，选择了高达1000 ppmv的合成甲烷（CH）基质以及不同的HS含量作为在维也纳工业大学进行基于实验室性能评估的模型环境。针对1247.2 cm处吸收线的HS的噪声等效吸收灵敏度（NEAS）为8.419×10 cm Hz，并且可以实现150 ppbv HS的检测限（LOD）。然后将该传感器原型部署到工业合作伙伴奥地利石油天然气集团（OMV AG）的石化研究加氢平台进行现场测量。为了符合该公司的现场安全规定，HS传感器平台安装在工业机架中，并配备了在危险和爆炸环境中进行受保护操作所需的安全基础设施。该工作报告了该传感器原型适用于同时监测研究加氢脱硫（HDS）装置工艺流中的HS和CH含量。每15秒获取一次浓度读数，揭示了以前未观察到的过程动态。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/0805fa28e1ca/216_2016_9923_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/09a29fd94660/216_2016_9923_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/7555ed139ea2/216_2016_9923_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/d4965fc24188/216_2016_9923_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/e898ce252c58/216_2016_9923_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/623152bcfed6/216_2016_9923_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/28f991254a56/216_2016_9923_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/67f0c3308514/216_2016_9923_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/708130a398e5/216_2016_9923_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/0805fa28e1ca/216_2016_9923_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/09a29fd94660/216_2016_9923_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/7555ed139ea2/216_2016_9923_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/d4965fc24188/216_2016_9923_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/e898ce252c58/216_2016_9923_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/623152bcfed6/216_2016_9923_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/28f991254a56/216_2016_9923_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/67f0c3308514/216_2016_9923_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/708130a398e5/216_2016_9923_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cce7/5233737/0805fa28e1ca/216_2016_9923_Fig9_HTML.jpg

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