Wet Scrubber Treats HCl & Cl2 from RTO

A pharmaceutical manufacturing plant was installing a new Regenerative Thermal Oxidizer (RTO) to control VOC emissions from its production processes. Hydrogen chloride (HCl) and chlorine gas (Cl2) were produced as a result of combustion and Monroe Environmental was contracted to provide a Wet Scrubber system to capture and neutralize the toxic gasses.

The gas stream was pre-treated by evaporative quenching to achieve an inlet temperature of 180°F prior to entering the Monroe Scrubber.

Scope of supply included:

  • Packed Tower Scrubber, FRP construction
  • Random packing media, glass filled polypropylene construction
  • Liquid reservoir with level controls and water make-up
  • Redundant re-circulation pump assemblies, polypropylene construction
  • Chemical feed pumps
  • Mist eliminator
  • Exhaust stack, FRP construction
  • pH and ORP controls
  • Piping, valves, and instrumentation
  • NEMA 3R junction box

The scrubber tower and pump assemblies were mounted on a common skid for ease of installation. The system was rated for 12,500 ACFM and +99% removal efficiency.