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.