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Effectively Responding to Sour Gas Oct 28, 2013

While sour gas commonly refers to the presence of H2S or hydrogen sulfide, it can also refer to the presence of carbon dioxide or CO2. Due to the specifications enforced by natural gas pipelines that require H2S levels to be less than 4 ppm and CO2 levels to be less than two percent, special gas removal processes are necessary. 

Furthermore, as carbon dioxide does not possess any heating value, the pipeline may also place limits on total inerts. Additionally, some gas process plants may also place stipulations that concentrations be brought to below limits specified by the pipelines. A wide range of amine plants can be used in various operating conditions to achieve required specifications. Various amines, such as DGA, MDEA, and DEA, can be incorporated to provide specific solutions. 

When handled properly, amine plants have been shown to significantly reduce chemical levels. Through the incorporation of modern amine treating solutions, it is possible to achieve desired efficiency at the lowest cost. Depending upon a client's specific needs, scavengers may be used or a multi-prong treatment approach may be recommended to achieve best H2S and carbon dioxide removal rates. 

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