The present invention provides a method for inhibiting the evolution of H2S
from sulfhydryl compounds in molten sulfur by using scavenging agents such as anhydrides
and polymers thereof, conjugated ketones, carbonates, epoxides, monoesters and
diesters of unsaturated dicarboxylic acids and polymers of these esters, and the
like and mixtures thereof. In one embodiment, it is preferred that the scavenging
agent is in liquid form at contact temperature with the molten sulfur. In another
embodiment, the scavenging agent may be atomized into the vapor space over the
molten sulfur to contact the sulfur with the agent.
