What is the typical level of hydrogen sulfide in lean amine solutions?
Thread Content
The amine solution absorbs hydrogen sulfide and is then regenerated; the regenerated lean solution contains a certain amount of hydrogen sulfide. Different processes use different concentrations of amine solutions; in oil refining, the concentration is usually around 30%, with some cases reaching nearly 50%. I would like to ask: what is the optimal level for controlling the hydrogen sulfide content in the lean solution? Furthermore, to what extent can an increase in the amine solution concentration affect foaming?
It should not exceed 0.6 mg/l; generally, a level of 0.35–0.5 mg/l is optimal. Facilities equipped with coking units need to add antifoam agents regularly.