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Análisis de puntos de rocío y contenidos de humedad de mezclas gaseosas N2-H2O y CH4-H2O
DOI:
https://doi.org/10.15446/ing.investig.n31.24787Keywords:
ingeniería química, mezclas gaseosas (es)ingeniería química, mezclas gaseosas (en)
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El conocimiento actual del contenido de humedad de mezclas gaseosas saturadas es aún incompleto, especialmente en la región de altas presiones y bajas temperaturas. Por tanto se realizaron medidas experimentales de punto de rocío con los sistemas nitrógeno-agua y metano-agua, a presiones de 3 y 6 MPa y a temperaturas de 258 K a 288 K. Los puntos de rocío se determinaron con el método del espejo de punto de rocío y los contenidos de humedad por medio de la titulación de Karl-Fischer. Los valores experimentales se compararon con correlaciones de la literatura. El método de Sharma-Campbell resultó ser la mejor descripción del sistema nitrógeno-agua. Para temperaturas inferiores a 273 K la suposición de comportamiento de gas ideal mostró ser suficiente para el sistema metano-agua, mientras que para temperaturas superiores a 273 K los cálculos mediante el principio de estados correspondientes con dos parámetros, en combinación con una corrección de fugacidad, manifestó ser la mejor.
The actual knowledge of the exact water content in saturated gas mixtures still is incomplete, especially in the high pressure and low temperature region. Hence, dew point measurements with nitrogen-water and methan-water mixtures were performed, at pressures of 3 and 6 MPa and temperatures from 258 K to 288 K. The dew points were determined with the dew point mirror method and the water content by means of the Karl-Fischer-titration. The experimental values were compared to correlations from the literature. The approach by Sharma-Campbell resulted in the best description of the system nitrogen-water. For temperatures below 273 K the assumption of ideal behavior proved to be sufficient for the system methan-water, whereas for temperatures above 273 K calculations with the two-parameter corresponding states principle in combination with a fugacity correction turned out to be the best.
References
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Copyright (c) 1995 D. Bogoya M., C. Müller, I. Q., L. R. Oellrich
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