Blending amines debottlenecks Iranian gas plant

Mixing amines can increase capacity or improve efficiency in an amine sweetening plant.1Changing the amine type from monoethanolamine (MEA) or diethanolamine (DEA) to MDEA is done to overcome specific plant problems that can be categorized into three main groups:The amine-treating section of the plant is a bottleneck for plant-capacity increase or feed-gas composition change.Sour-gas quality delivered to a Claus unit is such that it requires improvements; that is, an H2S concentration increase by introduction of CO2 slippage in treated gas.Corrosion.In some cases, generic MDEA works, but product gas specifications are not normally achieved.2 In other cases, it does not work,3 and tailorin...

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