Study evaluates two amine options for gas sweetening

A study of two methods for removing H2S and CO2 from natural gas has concluded that an arrangement of methyl diethanolamine (MDEA) and diethanolamine (DEA) units and the order of their use affect the concentration of H2S in the acid-gas feed to the sulfur-recovery unit. The study showed that sweetening natural gas with DEA unit first and separating the acid gases from each other by an MDEA unit at low pressure produce richer H2S in the acid-gas stream, providing a more favorable feed for the SRU. The evaluation also shows that the overall energy consumption is slightly lower for this option.The main objective of this study was to evaluate two alternatives for removing H2S and CO2 from a n...

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