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Simple Gas Measurements Using Sorbent Traps

Ohio Lumex sorbent traps make it easy to measure even the toughest gases, such as Hg, HCl, HBr, Se, As, SO3 and NH3. The diagram above shows key places for measurement across the entire process. 

Hg - Mercury Sorbent Traps
  • Measure natural Hg speciation prior to SCR

  • Measure Hg oxidation across the SCR

  • Measure elemental and oxidized Hg going into the FGD to determine Hg reemission

  • 30B traps measure total Hg going into the FGD

  • Measure Hg speciation at the stack to determine the cause of elevated Hg emissions

    • 30B traps measure Hg for RATAs 

    • PS12B and 30B LEE traps measure Hg for MATS compliance

Hg SORBENT TRAP INFO

HCl/HBr Sorbent Traps
  • Measure native halogen levels in the gas phase or those resulting from halogen additives before the APH

  • Measure native halogen levels in the gas phase or those resulting from halogen additives and compare to APH inlet levels to estimate corrosion

  • Measure halogen levels at the FGD inlet

  • Measure HCl/HBr at the stack for compliance or process engineering

 

HCl & HBr SORBENT TRAP INFO

Selenium & Arsenic Sorbent Traps
  • Measure As which contributes to catalyst poisoning before the SCR and/or APH

  • Measure Se/As which affects ELG compliance before the SCR and/or APH

  • Measure gas phase Se/As entering the FGD and impacting ELG

Se & As SORBENT TRAP INFO

SO3 & Sulfuric Mist Sorbent Traps
  • Measure SO3 generated by the combustion process before the SCR

  • Measure SO2 to SO3 conversion across the SCR

  • Measure SO3 levels that cause corrosion and contribute to elevated Hg emissions before the FGD

  • Measure SO3 for blue plume at the stack

SO3 SORBENT TRAP INFO

NH3 Sorbent Traps
  • Measure ammonia slip through the SCR

  • Measure ammonia entering the FGD, contributing to the reduction of oxidized Hg

  • Measure ammonia at the stack for compliance or process engineering

NH3 SORBENT TRAP INFO