Rapid hydrocarbon dew points by infrared spectroscopy: Results and validation for binary mixtures of methane + {propane, isobutane and butane}

Corey J. Baker, Thomas J. Hughes, Brendan F. Graham, Kenneth N. Marsh, Eric F. May

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

An industrial hydrocarbon dew point detector based on infrared absorption spectroscopy was tested down to a temperature of 243 K and at pressures up to 10 MPa. Dew temperatures were measured isobarically for pure ethane and mixtures of methane + {propane, isobutane, or n-butane}. Ethane dew temperatures were within ±0.38 K of the reference equation of state prediction. Mixture dew temperatures below the cricondentherm were determined within 0.7 K. At higher pressures, dew temperatures were over-predicted due to the rapid changes in gas density with temperature. Improved performance could be achieved by isochoric operation, and by reducing temperature scan rates.

Original languageEnglish
Pages (from-to)304-310
Number of pages7
JournalJournal of Industrial and Engineering Chemistry
Volume58
DOIs
Publication statusPublished - 25 Feb 2018

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Butanes
Propane
Methane
Butane
Hydrocarbons
Binary mixtures
Infrared spectroscopy
Ethane
Temperature
Density of gases
Infrared absorption
butane
Absorption spectroscopy
Equations of state
Detectors

Cite this

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title = "Rapid hydrocarbon dew points by infrared spectroscopy: Results and validation for binary mixtures of methane + {propane, isobutane and butane}",
abstract = "An industrial hydrocarbon dew point detector based on infrared absorption spectroscopy was tested down to a temperature of 243 K and at pressures up to 10 MPa. Dew temperatures were measured isobarically for pure ethane and mixtures of methane + {propane, isobutane, or n-butane}. Ethane dew temperatures were within ±0.38 K of the reference equation of state prediction. Mixture dew temperatures below the cricondentherm were determined within 0.7 K. At higher pressures, dew temperatures were over-predicted due to the rapid changes in gas density with temperature. Improved performance could be achieved by isochoric operation, and by reducing temperature scan rates.",
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AU - Hughes, Thomas J.

AU - Graham, Brendan F.

AU - Marsh, Kenneth N.

AU - May, Eric F.

PY - 2018/2/25

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AB - An industrial hydrocarbon dew point detector based on infrared absorption spectroscopy was tested down to a temperature of 243 K and at pressures up to 10 MPa. Dew temperatures were measured isobarically for pure ethane and mixtures of methane + {propane, isobutane, or n-butane}. Ethane dew temperatures were within ±0.38 K of the reference equation of state prediction. Mixture dew temperatures below the cricondentherm were determined within 0.7 K. At higher pressures, dew temperatures were over-predicted due to the rapid changes in gas density with temperature. Improved performance could be achieved by isochoric operation, and by reducing temperature scan rates.

KW - Butane

KW - Dew points

KW - Infrared absorption spectroscopy

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KW - Propane

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