Caustic fume scrubber

Caustic fume scrubber

 

  • In most cases, chemicals stored in polyethylene tanks require venting. In some instances, the harmful fumes emitted from the chemicals cannot be directly released to the atmosphere.
  • In order to reduce the harmful fumes before they evacuate the system and to control air pollution, fume scrubbers are installed. 

Working principle

  • Caustic fume scrubbers remove or neutralize the harmful substances emitted from combustion or the storage of chemicals.
  • It works by contacting the target compounds with a scrubbing solution. Often, the solution is simply water, but can be a reagent to address specific chemicals.
  • Some of the chemicals that can be vented from tanks are hydrochloric acid, and acetic acid.  When storing these types of chemicals, it’s important to construct a system that address venting needs by installing a compatible scrubber.
  • Drizgas Tech offers a cost-effective caustic fume scrubber system and we are the one of the leading manufacturer of caustic fume scrubber in India. The system introduces water or a specific scrubbing solution through a submerged plenum. The fumes percolate up and through the scrubbing solution, then vent out of the top of the scrubber system. 
  • If your applications need caustic fume scrubber or you are not sure, please contact us for more detailed information.

Features

  • Can handle air flow rate from 100 to 30,000 CFM
  • Removal method is Absorption / Chemisorption
  • Material of Construction: PP, FRP, PP+FRP, MS+FRP, SS 304, SS 316
  • High efficiency Tellerette® Tower Packing removes soluble/reactive gases, solid particulate and liquid droplets down to 7 microns
  • Lower shell serves as integral sump for recycle of liquid
  • Spray nozzles accessible from top of unit
  • Entrainment separators prevent liquid carryover
  • Special multi-bed packing designs accommodate different scrubbing solutions for removal of multiple contaminants
  • Efficiency up to 99 %

Additional accessories

  • Continuous pH monitoring system for scrubbing liquid
  • Dosing system for adjusting pH
  • PLC operated control panel
  • SCADA system

Applications

  • NaOH fume Scrubbing
  • Solvent vapor scrubbing
  • Inorganic chemical scrubbing
  • Plating industries scrubbing
  • NOx Scrubbing system
  • Boiler Exhaust flue gas scrubbing

Frequently Asked Questions

A caustic fume scrubber is a system designed to remove alkaline gases, vapors, or mists (e.g., sodium hydroxide, potassium hydroxide) from industrial exhaust streams, ensuring safe emissions and compliance with environmental standards.

The scrubber works by:

  • Neutralization: Using an acidic solution (e.g., sulfuric acid) to neutralize alkaline gases.
  • Absorption: Dissolving caustic fumes into a liquid medium, which chemically reacts with them to produce harmless byproducts.
  • Dry Scrubbing (if applicable): Using solid materials to adsorb and neutralize fumes without liquid waste.

Industries that commonly use caustic fume scrubbers include:

  • Chemical manufacturing
  • Food processing
  • Pulp and paper mills
  • Metal plating and finishing
  • Textile production

These scrubbers remove:

  • Sodium hydroxide (NaOH) mist
  • Potassium hydroxide (KOH) mist
  • Ammonia (NH₃) in some cases
  • Other alkaline vapors

  • Wet Scrubbers: Use liquid solutions to neutralize fumes.
  • Packed Bed Scrubbers: Enhance gas-liquid contact with packing materials.
  • Dry Scrubbers: Use solid sorbents to neutralize or adsorb alkaline gases.
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  • High efficiency in removing harmful caustic gases.
  • Ensures compliance with air quality regulations.
  • Protects workers and equipment from exposure to corrosive fumes.
  • Reduces environmental impact.
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