Norton C G, Suedmeyer J, Oderkerk B, Fieback T M
Experimental Thermodynamics, Ruhr-University Bochum, Bochum 44780, Germany.
Avantes BV, Oude Apeldoornseweg 28, Apeldoorn 7333, Netherlands.
Rev Sci Instrum. 2014 May;85(5):053101. doi: 10.1063/1.4873195.
A new optical flow cell with a new optical arrangement adapted for high pressures and temperatures using glass fibres to connect light source, cell, and spectrometer has been developed, as part of a larger project comprising new methods for in situ analysis of bio and hydrogen gas mixtures in high pressure and temperature applications. The analysis is based on measurements of optical, thermo-physical, and electromagnetic properties in gas mixtures with newly developed high pressure property sensors, which are mounted in a new apparatus which can generate gas mixtures with up to six components with an uncertainty of composition of as little as 0.1 mol. %. Measurements of several pure components of natural gases and biogases to a pressure of 20 MPa were performed on two isotherms, and with binary mixtures of the same pure gases at pressures to 17.5 MPa. Thereby a new method of analyzing the obtained spectra based on the partial density of methane was investigated.
作为一个更大项目的一部分，该项目包含用于高压和高温应用中生物气和氢气混合物原位分析的新方法，已经开发出一种新型光流池，其采用了一种适用于高压和高温的新型光学装置，该装置使用玻璃纤维连接光源、光流池和光谱仪。该分析基于使用新开发的高压特性传感器对气体混合物中的光学、热物理和电磁特性进行测量，这些传感器安装在一种新装置中，该装置可以生成多达六种成分的气体混合物，成分不确定度低至0.1摩尔%。在两条等温线上对几种天然气和生物气的纯组分进行了压力高达20MPa的测量，并对相同纯气体的二元混合物在压力高达17.5MPa下进行了测量。由此研究了一种基于甲烷部分密度分析所得光谱的新方法。
