Several pressure and temperature reductions occur along gas transmission lines. Since the pressure and temperature conditions of the natural gas in the pipeline are often close to the dew point curve, liquid dropout can occur. Injection of hydrogen into the natural gas will change the phase envelope and thus the liquid dropout. This condensation of the heavy hydrocarbons requires continuous operational attention and a positive effect of hydrogen may effect the decision to introduce hydrogen. In this paper, the authors report on calculations of the amount of condensate in a natural gas and in this natural gas mixed with 16.7 % hydrogen. These calculations have been performed at conditions prevailing in gas transport lines. The results will be used to discuss the difference in liquid dropout in a natural gas and in a mixture with hydrogen at pressure reduction stations, at crossings under waterways,, at side-branching, and at separators in the pipelines.


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    Title :

    Condensation in gas transmission pipelines. Phase behavior of mixtures of hydrogen with natural gas


    Additional title:

    Kondensation in Gasfernleitung. Eine Untersuchung zum Phasenverhalten von Mischungen aus Wasserstoff und Erdgas


    Contributors:

    Published in:

    Publication date :

    2005


    Size :

    8 Seiten, 4 Bilder, 2 Tabellen, 17 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English