Packed Bed Scrubber for removal of chemical storage tank vapors

Packed Bed Wet Scrubbers 

Fume Scrubbers remove acids, soluble gasses, chemicals, and odors

Monroe Environmental is a single source solution for highly durable and efficient Packed Bed Scrubbers. A Packed Bed Scrubber is a wet scrubber that removes acids, soluble gasses, chemicals, fumes, and odors. Contaminated gas flows through a specially designed packing media that is wetted with recirculated liquid. The liquid solvent absorbs the gas pollutant by physical or chemical means. A blowdown from the tank with makeup water addition removes contaminant products before they precipitate.

Packed Bed Wet Scrubber Design

Packed Bed Scrubber for ammonia scrubbing
  • Capacities: 10 to 75,000 CFM with a single unit
  • Efficiencies to 99.99%
  • Vertical and horizontal configurations
  • Counter-flow and cross-flow models
  • Cylindrical and rectangular construction designs
  • Pre-quench and venturi stages available

Common contaminates removed by Monroe Packed Bed Fume Scrubbers include:

  • H2S
  • HCl
  • HF
  • HBr
  • HCN
  • HNO3
  • NH3
  • Formic acid
  • Chromic acid

  • SO2
  • Cl2, F2, Br2
  • BCl3, BF3
  • Formaldehyde
  • Ethylene compounds
  • Soluble alcohols, acids, & VOCs
  • And many others

Monroe Environmental offers complete in-house fabrication and engineering services to provide high quality solutions at a low price. Monroe Environmental supports its customers with installation, start-up assistance, training, and field service. Each Packed Bed Scrubber is sized and designed for specific customer requirements. We will evaluate fume removal applications to determine the optimum design parameters for each installation. Monroe Environmental designs and builds complete scrubbing systems including multiple stages when required. We also design liquid clarification systems and other air cleaning devices, and can provide integrated complete systems.

Wet Scrubber Features

Packed Bed Scrubber for glass coating operation
  • Materials of construction include:
    • FRP
    • RTP (Reinforced Thermoset Plastic) and dual laminate
    • PVC and CPVC
    • Polypropylene and polyethylene
    • Stainless steel, mild steel, and FRP-lined mild steel
    • Nickel alloys
    • Titanium
  • Wide range of packing media including rings and saddles in various materials. Structured packing is also available.
  • Complete instrumentation and electrical controls are available for stand alone operation or connection with a facility’s centralized control or monitoring systems.
  • Chemical treatment, including oxidation and neutralization, is available to increase absorption of gaseous pollutants. pH control available when applicable.
  • Corrosion resistant AMCA rated fan on the inlet or outlet side of the scrubber.
  • Corrosion resistant recirculating pumps for scrubber liquid re-circulation.
  • Non-plugging spray nozzles for wetting packing in a wide range of corrosion resistant materials. Special liquid distributors may also be used.
  • Moisture eliminators with chevron, mist pad, or loose fill type designs.

Efficient Fume Scrubber Design

Monroe Environmental Packed Bed Scrubbers are custom designed to meet or exceed the specific removal efficiency required for each customer’s application and process. Monroe can also provide a process simulation for difficult or unique scrubbing system applications. Monroe engineers will optimize the performance of each unit by thorough evaluation of relevant parameters.

To optimize the performance of each unit, Monroe will analyze:

  • Contaminant solubility
  • Vapor pressures
  • Wash liquid flow rate
  • Liquid to gas ratio
  • Packing chamber height, diameter, and volume
  • Packing media type and size
  • Chemical additives
  • pH control

Packed Bed Scrubber spray nozzles and packing media
  • Precipitation of reaction products
  • Multiple solution scrubbing
  • Required scrubbing stages
  • Pressure drop across packing
  • Materials of construction
  • Site requirements

Wet Scrubber Configurations

Packed Bed Scrubber Applications

  • Acid fumes and gases
  • Chemical fumes and odors
  • Food processing odors
  • Landfill and biogas contaminants
  • Metal finishing fumes
  • Steel processing fumes
  • Wastewater treatment plant odors
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Learn more about Monroe's Packed Bed Scrubbers Scrubbing applications and engineering

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