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Title: Devices For Water Vapor And. Hydrocarbon Dew-Point Measurement In. Gas.
Author: Daniel R. Potter, Georges D&rsquo, Eon Randy Hauer
Source: 2003 International School of Hydrocarbon Measurement
Year Published: 2003
Abstract: The reasons for monitoring the dew-point of natural gas for custody transfer and transport are well understood.. High levels of water vapor in. a natural gas stream can lead to corrosion, hydrate formation,. and freezing (cryogenic processes). Elevated hydrocarbon (HC)dew-points in. a natural gas stream, can lead to. pooling of liquids at low points in the pipeline, variations in. the BTU. content of the gas, and hot spots on compressor-turbine blades. While. these effects are well known 1, there is confusion over many aspects of measuring dewpoints and relating these measurements to the component concentrations in a natural gas. sample. Specifically, the critical issues are the distinction between measuring water and HC dew-points, the relationship of the dew-point to concentration, the. validation of dew-point measuring instruments, and the pitfalls of sample systems. A fundamental understanding of the various detection principles, physical phenomena,, and influencing factors is essential to resolving the confusion over water and HC dew-point measurements..

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