Hollow Fiber Coupler for Hydrogen Sulfide Spectral Analysis

用于硫化氢光谱分析的中空光纤耦合器

• 批准号: 571684-2021
• 负责人: Lu, TaoT
• 金额: $ 2.04万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=751889
• 关键词: Hollow; Fiber; Coupler; Hydrogen; Sulfide

Hydrogen Sulfide (H2S) needs to be closely monitored in natural gas production, transportation and storage. The nature of the work is to conduct initial study toward a precision spectroscopy analyzer that can identify and quantify H2S concentrations as low as several parts per million in natural gas. In this project, a hollow core fiber and a regular fiber fused optical directional coupler will be used to efficiently collect the samples on-site and conduct realtime spectral measurements. In particular, we will conduct spectral analysis on both absorption and Raman spectroscopy and compare their relative advantages and disadvantages. In order to quantify chemical concentrations in higher accuracy in cluttered environments, machine learning algorithms will be adopted for both absorption and Raman spectral analysis. We will compare the sensitivity, resolution and detection limit in cluttered environment between both spectrscopic methods and make recommendations to Envent Engineering Ltd. on the suitable choices for their related product. The anticipated outcome, once proven positive, will help Envent Engineering Ltd. to provide oil industry the capacity to monitor H2S concentrations at a precision, sensitivity and limit of detection that is currently unavailable. The successful execution of the project will further strength the collaboration with Envent with future extension for monitoring other chemical substance such as methane, Tert-Butyl Mercaptan, Methyl Sulfide, etc. The implementation of the proposed technology will help the industry to ensure these chemical contents in natural gas at a permissive level. The successful control of them through this proposed technology will benefit the industry to reduce the instrument maintenance cost for production, transportation and storage and reduce the greenhouse emission source to counter-fight the climate change. It will also help the industry to abide the requirement set by the government to protect our environment. The training of the students in the project will provide Canadian industry highly qualified personnels, which is critical for Canadian industry leading in the field.

在天然气生产、运输和储存过程中，需要对硫化氢（H2S）进行密切监测。这项工作的性质是对一种精密光谱分析仪进行初步研究，该分析仪可以识别和量化天然气中低至百万分之几的H2S浓度。在这个项目中，一个空芯光纤和一个规则的光纤熔融光学定向耦合器将被用来有效地收集样品的现场和进行实时光谱测量。特别地，我们将对吸收和拉曼光谱进行光谱分析，并比较它们的相对优势和劣势。 为了在杂乱的环境中以更高的精度量化化学品浓度，将采用机器学习算法进行吸收和拉曼光谱分析。我们会比较两种光谱法在杂波环境下的灵敏度、分辨力和检出限，并向Envent Engineering Ltd.建议合适的产品选择。预期的结果，一旦被证明是积极的，将有助于Envent工程有限公司提供石油工业的能力，监测硫化氢浓度的精度，灵敏度和检测限，目前还没有。该项目的成功实施将进一步加强与Envent的合作，并在未来扩展到监测其他化学物质，如甲烷，叔丁基硫醇，甲基硫等。通过这项技术成功控制它们将有利于工业界降低生产，运输和储存的仪器维护成本，减少温室气体排放源以应对气候变化。这亦有助业界遵守政府为保护环境而订立的规定。该项目对学生的培训将为加拿大工业提供高素质的人才，这对加拿大工业在该领域的领先地位至关重要。