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Purge gas in ammonia plants is more than an energy source: Find out how
Oct 12: A typical purge gas contains about 60% hydrogen, 20% nitrogen, 5% argon, 10% methane and 4% ammonia in varying concentrations, depending on the process in place at the ammonia plant. Instead of burning purge gases, it makes good financial sense to recover valuable gases such as ammonia, hydrogen, nitrogen and argon.
8Ammonia synthesis uses syngas generated by steam reforming natural gas (as the feedstock). However, this reaction also produces a number of other gases that do
not contribute to the ammonia reaction.
8These purge gases need to be continuously removed from the synthesis loop and are generally fed back to the reformer furnaces as fuel gas.
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