Stores, scrubbed scrubbers

Hydrogen sulfide separated from natural gas by amine scrubbing is a highly odorous, toxic, low boiling gas and for these reasons is difficult to store or ship in large quantities. Hence, a Claus unit is closely associated with each amine scrubber to convert the hydrogen sulfide gas product of the scrubber to elemental sulfur. This is much easier and safer to store and ship in large quantities. 

---