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DETECTION OF H2S IN NATURAL GAS AND HYDROCARBON STREAMS USING A DUAL-PATH NEAR-IR SPECTROSCOPY SYSTEM
DETECTION OF H2S IN NATURAL GAS AND HYDROCARBON STREAMS USING A DUAL-PATH NEAR-IR SPECTROSCOPY SYSTEM
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机译：双通道近红外光谱系统检测天然气和烃类流中的H2S
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摘要
Methods and systems for real time, in situ detection of a contaminant in a fluid, and particularly the determination of hydrogen sulfide concentration in a natural gas or other hydrocarbon stream, are provided. The system may include a scanning source with wavelength scanning range of 1560-1610 nm and wavelength resolution of 0.01 nm or better. The light from the scanning source is split to two portions: reference path to reference detector with no fluid in the transmission, and sample path to sample detector with fluid in the transmission. The major noise from the light source and transmitting optics is cancelled out by applying log ratio calculation to the two detector signals. The spectroscopic optical data, however obtained, must then be combined into an analytical processing module containing models that analyze the contaminant quantitative data.
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