Development of a Micro-electromechanical Photoacoustic Spectrometer for Industrial Applications and the Study of SO2 at High Temperatures

工业应用微机电光声光谱仪的开发及高温下 SO2 的研究

基本信息

批准号：
EP/K034758/1
负责人：
Michael Lengden
金额：
$ 12.64万
依托单位：
University of Strathclyde
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2013
资助国家：
英国
起止时间：
2013 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FK034758%2F1
关键词：
Development Micro electromechanical Photoacoustic Spectrometer

项目摘要

This proposal aims to develop a highly sensitive gas sensor, combining photo-acoustic spectroscopy with micro-electromechanical (MEMS) technology. In conjunction with the sensor development, a new high temperature gas spectrometer will be developed to measure the spectral parameters of gas species, such as linestrength and collisional broadening coefficients, and their temperature dependence in the mid infra-red region of the electromagnetic spectrum. The sensor development will initially target a specific application, the measurement of sulphide gas species during the desulphurisation of natural gas and gas obtained from coal gasification. Coal gasification and natural gas are the likely fuel for large-scale Solid Oxide Fuel Cells, one of the many distributed power generation strategies being considered to reduce carbon dioxide emissions. Without the desulphurisation process, the sulphide species gases present in the fuel source will poison the electrodes of the fuel cell, initially reducing efficiency but ultimately leading to system failure. Monitoring the sulphide species content of the gas entering the fuel cell using an in-situ optical technique will provide a fail-safe solution and reduce the risk of failure. In standard laser spectroscopy optical detectors are needed, however, in the mid-IR these detectors are expensive and need to temperature stabilised. The use of photoacoustic spectroscopy eliminates the necessity for an optical detector, allowing the gas sensor to be easily adapted to monitor a wide-range of gas species, with the major limitation of the sensor being the availability of an appropriate optical source. The use of a MEMS device to detect the acoustic signal, induced by the laser-gas interaction, provides further advantages as it is robust, cheap to develop with a resonant frequency and high Q-factor, making ideal for operation in industrial environments. This will allow a number of future applications to be targeted including explosives detection, gas leak detection, medical diagnostics, atmospheric monitoring and combustion product analysis.

该提案旨在开发高度敏感的气体传感器，将光声光谱与微机械（MEMS）技术相结合。结合传感器的开发，将开发一个新的高温气体光谱仪，以测量气体物种的光谱参数，例如固定型和碰撞拓宽系数，以及它们在电磁光谱的中红外区域中的温度依赖性。传感器的开发最初将针对特定的应用，即在脱硫化天然气和从煤气中获得的天然气和天然气的硫化物气体的测量。煤气化和天然气是大规模固体氧化物燃料电池的可能燃料，这是被视为减少二氧化碳排放的众多分布式发电策略之一。如果没有脱硫过程，燃料来源中存在的硫化物气体将毒害燃料电池的电极，最初降低效率，但最终导致系统故障。使用原位光学技术监测进入燃料电池的气体的硫化物物种含量将提供故障安全溶液并降低失败的风险。在标准的激光光谱学中，需要光学探测器，但是，在MID-IR中，这些探测器很昂贵，需要稳定温度。光声学光谱的使用消除了光学检测器的必要性，从而使气体传感器很容易适应以监视大量气体物种，其主要限制是传感器的可用性是适当的光源。使用MEMS设备来检测由激光气体相互作用引起的声信号，因此具有强大的优势，可以以谐振频率和高Q因子开发，因此在工业环境中运行是理想的。这将允许将来的许多应用程序作为目标，包括爆炸物检测，气体泄漏检测，医疗诊断，大气监测和燃烧产品分析。

项目成果

期刊论文数量（9）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

MIR Photoacoustic Trace Gas Sensing Using a Miniaturized 3D Printed Gas Cell

使用微型 3D 打印气体池进行 MIR 光声痕量气体传感

DOI：
10.1364/sensors.2015.set1c.3
发表时间：
2015
期刊：
影响因子：
0
作者：
Bauer R
通讯作者：
Bauer R

All-optical fiber multi-point photoacoustic spectroscopic gas sensing system

DOI：
10.1364/ofs.2018.wf17
发表时间：
2018-09
期刊：
影响因子：
0
作者：
Congzhe Zhang;Yuanhong Yang;Yuechuan Lin;Yanzhen Tan;M. Lengden;G. Humphries;W. Johnstone;H. Ho;W. Jin
通讯作者：
Congzhe Zhang;Yuanhong Yang;Yuechuan Lin;Yanzhen Tan;M. Lengden;G. Humphries;W. Johnstone;H. Ho;W. Jin

Performance of a 3D printed photoacoustic sensor for gas detection in mid-infrared

用于中红外气体检测的 3D 打印光声传感器的性能