Abstract
AbstractHydrogen sulfide/water mixtures are frequently encountered in the petrochemical and heavy water industries. Such mixtures exhibit an inherent foaminess when operating close to the liquefaction pressure of H2S. This can cause severe problems in fluid handling equipment.Some nonionic surfactants are effective antifoams for these mixtures. The antifoam action is due to surfactant micelle formation which is enhanced by the presence of H2S through a “salting out” mechanism. The pressure at which a particular surfactant becomes an antifoam can be predicted from the hydrophobicity of the surfactant molecule. Such understanding could be applied to control foaming in other systems.
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