When is TBPS or DTBPS preferred over DMDS?
Refineries may select TBPS/DTBPS when:
- A lower sulfiding temperature is required.
- Methane formation (“methane make”) is a concern.
- Operators prefer less odor and improved safety profile (TBPS/DTBPS are less volatile than DMDS).
- The unit requires gradual sulfur release for temperature-sensitive catalysts.