TY  - SER
AU  - Petrov,Dmitry Vitalievich
AU  - Matrosov,Ivan I.
AU  - Zaripov,Alexey R.
AU  - Tanichev,Alexander S.
TI  - Raman natural gas analyzer: Effects of composition on measurement precision
KW  - рамановская спектроскопия
KW  - газовый анализ
KW  - метан
KW  - алканы
KW  - изотопный состав
KW  - теплотворная способность
KW  - статьи в журналах
N1  - Библиогр.: 32 назв
N2  - Raman spectroscopy is a promising method for analyzing natural gas due to its high measurement speed and the potential to monitor all molecular components simultaneously. This paper discusses the features of measurements of samples whose composition varies over a wide range (0.005-100%). Analysis of the concentrations obtained during three weeks of experiments showed that their variation is within the error caused by spectral noise. This result confirms that Raman gas analyzers can operate without frequent calibrations, unlike gas chromatographs. It was found that a variation in the gas composition can change the widths of the spectral lines of methane. As a result, the measurement error of oxygen concentration can reach 200 ppm. It is also shown that neglecting the measurement of pentanes and n-hexane leads to an increase in the calculated concentrations of other alkanes and to errors in the density and heating value of natural gas
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001001439
ER  -