What is "crystasulf"

CrystaSulf is the trade name for a chemical process used for removing hydrogen sulfide (HS) from natural gas, synthesis gas and other gas streams in refineries and chemical plants. CrystaSulf uses a modified liquid-phase Claus reaction to convert the hydrogen sulfide (HS) into elemental sulfur which is then removed from the process by filtration. CrystaSulf is used in the energy industry as a mid-range process to handle sulfur amounts between 0.1 and 20 tons per day. Below 0.1 tons of sulfur per day is typically managed by HS Scavengers and applications above 20 tons per day are typically treated with the Amine – Claus process.