Online measurement and control of natural gas based on Raman spectroscopy

Dejing Kong; Xuanze Wang; Mengxu Zhang; Meng Liu

doi:10.1117/12.2211473

26 January 2016 Online measurement and control of natural gas based on Raman spectroscopy

Dejing Kong, Xuanze Wang, Mengxu Zhang, Meng Liu

Proceedings Volume 9903, Seventh International Symposium on Precision Mechanical Measurements; 99030Y (2016) https://doi.org/10.1117/12.2211473
Event: Seventh International Symposium on Precision Mechanical Measurements, 2015, Xia'men, China

Abstract

Online analytical instruments have been increasingly widely applied to various kinds of industrial facilities. And the Raman spectrum analyzer is one of the typical representatives, which has been widely used in chemical,environment, biological, medical, court and identification science, geology, material, oil and other fields of study. With the rapid development of Chinese economy and sharp increase in demand of fossil fuels, it’s crucial to figure out how to measure the intensity of Raman spectra in high precision and how to use the Raman spectra to acquire the high precision result of each component in natural gas. Therefore, how to process the natural gas Raman spectra’s base has become one of a vital and indispensable steps. So this paper proposes a new method to acquire the base which based on the designed Raman spectrometer structure system. The designed laser Raman gas analysis system shown as the following figure 1. The method of real-time difference which has been used to eliminate the background noise of basement can be fulfilled by adjusting the black baffle position up or down. By this way, intensity of gas signal spectra can be obtained. Compared to the method of using argon basal calibration, the hardware operation to preprocess the basement is more simple, and what just need to do is to adjust the electromagnetic valve to control the upper and lower position of the panel. It has important practical application value for saving cost and implementing easily.

Citation Download Citation

Dejing Kong, Xuanze Wang, Mengxu Zhang, and Meng Liu "Online measurement and control of natural gas based on Raman spectroscopy", Proc. SPIE 9903, Seventh International Symposium on Precision Mechanical Measurements, 99030Y (26 January 2016); https://doi.org/10.1117/12.2211473

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KEYWORDS

Raman spectroscopy

Gas lasers

Spectroscopy

Argon

Light scattering

Black bodies

Raman scattering

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