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Title: CO2 Determination In Natural Gas Streams
Author: Murray Fraser
Source: 2012 International School of Hydrocarbon Measurement
Year Published: 2012
Abstract: Carbon Dioxide (CO2) is commonly measured at processing plant outlets and meter stations where Gas Quality contracts limit diluent concentrations in Natural Gas to less than 3-5%. CO2 and Nitrogen (N2) are both considered diluents in Natural Gas as they do not contribute to the heating value. CO2 can be measured in Natural Gas Streams with on-line process analyzers using one of two analytical methods. This paper will discuss the advantages and disadvantages associated with each method. Emphasis will be on principal of operation and the practical issues associated with reliability and maintenance in Natural Gas Field locations. The two methods discussed in this paper are Gas Chromatography and Infrared Spectroscopy using one of two types of Infrared light sources and associated detectors

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