These innovative sorbent traps capture SO3, Sulfuric Acid Mist, and H2SO4 and are especially useful for SCR engineering purposes, although they can be sampled anywhere from economizer outlet to stack.
It’s important to measure SO3 for a variety of reasons, including:
- Very corrosive
- Competes with Hg for active sites on Activated Carbon (ACI)
- Contributes to ammonium bisulfate (ABS) formation on SCR Catalyst, inhibiting denitration
- Contributes to air preheater (APH) fouling issues
- Leads to blue plume formation