Selenium & Arsenic Sorbent Traps

Accurate and cost-effective measurements in a variety of flue gas matrices

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Designed specifically in response to the Effluent Limitations Guidelines (ELG), Se and As sorbent traps can be sampled using the same sampling equipment as Mercury (Hg) sorbent traps, the OLM30B Sorbent Trap Sampling System. The analysis is then completed by atomic fluorescence or atomic absorption via graphite furnace.


Many plants are considering reagent injection technologies pre-ESP to convert gas-phase selenium to particulate-bound selenium so that it can be removed before reaching the FGD. Our Se and As sorbent traps make it easier to obtain accurate and cost-effective measurements.

Features
  • Simple sampling procedure

  • Same equipment used for other sorbent trap methods

  • Can be customized for specific source conditions

Available Options
Technical Specifications
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Typical Applications

Selenium:

  • Flue gas measurement anywhere upstream of the FGD, in order to optimize control technologies for ELG compliance

Arsenic:

  • Flue gas measurement anywhere upstream of the FGD, in order to optimize control technologies for ELG compliance

  • Measurement at the SCR inlet in order to determine the presence of arsenic and its contribution to catalyst poisoning

  • Measure concentrations of total As at varying limestone feed rates to determine the effectiveness of limestone in reducing As2O3 concentrations and extending catalyst lifespan

Available Configurations

19" Rack

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Available Measurements
  • Arsenic (As)

  • Selenium (Se)

Downloads
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Ar & Se Flyer

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ELG Compliance Flyer