COBALT-CONTAINING INHIBITOR FOR SOUR GAS CONDITIONING SOLUTIONS

摘要

The corrosion of iron and steel by an aqueous sour gas conditioning solution used to remove CO2 from a gas stream is effectively inhibited by a combination of a quaternary pyridinium salt and an organic thioamide or water-soluble thiocyanate. The addition of a small amount of a water-soluble cobalt salt to the inhibitor combination improves its effectiveness.