A foundry exhaust scrubber is a critical air pollution control system designed to capture and remove harmful emissions, particulate matter, and toxic gases generated during metal casting, melting, and molding processes. These scrubbers use wet or dry filtration methods to neutralize pollutants such as sulfur dioxide (SO2), volatile organic compounds (VOCs), and metal fumes, ensuring cleaner air and regulatory compliance. Foundry exhaust scrubbers help minimize environmental impact, protect workers from hazardous exposure, and prevent equipment corrosion. By effectively controlling emissions, they enhance workplace safety, improve air quality, and support sustainable industrial operations in foundries and metal processing facilities.
Technical Specification
Parameter
Value
Air Flow
300 to 25,000 CFM
Material Of Construction
PP / FRP / PP+FRP / MS / SS
Removal Technique
Gas – Liquid Mass Transfer and Chemical Absorption
Pressure Drop
75 mm W.C.
Efficiency
Up to 99 %
Models and Options
MODEL NFES - 30
1. Air Handling Volume -- 400 CFM
2. Material Of Construction-- PP / FRP / PP+FRP / MS / SS
3. Removal Technique -- Gas – Liquid Mass Transfer and Chemical Absorption
4. Pressure Drop --75 mm W.C.
5. Filter Efficience -- 99%
MODEL NFES - 45
1. Air Handling Volume -- 1000 CFM
2. Material Of Construction-- PP / FRP / PP+FRP / MS / SS
3. Removal Technique -- Gas – Liquid Mass Transfer and Chemical Absorption
4. Pressure Drop --75 mm W.C.
5. Filter Efficience -- 99%
MODEL NFES - 60
1. Air Handling Volume -- 2000 CFM
2. Material Of Construction-- PP / FRP / PP+FRP / MS / SS
3. Removal Technique -- Gas – Liquid Mass Transfer and Chemical Absorption
4. Pressure Drop --75 mm W.C.
5. Filter Efficience -- 99%
MODEL NFES - 75
1. Air Handling Volume -- 3000 CFM
2. Material Of Construction-- PP / FRP / PP+FRP / MS / SS
3. Removal Technique -- Gas – Liquid Mass Transfer and Chemical Absorption
4. Pressure Drop --75 mm W.C.
5. Filter Efficience -- 99%
Application
Sand Casting Foundries – Removing silica dust, particulate matter, and fumes from molding.
Die Casting Foundries – Scrubbing metal fumes, oil mist, and volatile organic compounds (VOCs) .
Induction Furnaces – Controlling SO2, CO, and particulate emissions from metal melting processes.
Investment Casting Operations – Capturing wax burnout fumes, VOCs, and acid gases from ceramic .
Metal Pouring – Removing smoke, fumes, and hot particulate matter during metal pouring.
Core Making – Controlling dust, binders, and chemical fumes from sand handling.
Heat Treatment Units – Scrubbing emissions from annealing, tempering, and surface treatment furnaces.
Grinding & Finishing Sections – Capturing metal dust, slag dust, and abrasive particles during finishing.
Foundry Maintenance Areas – Removing chemical fumes from cleaning, degreasing.
Metal Alloy & Alloying Operations – Controlling toxic gas emissions like HCl, SO2, and metal fumes.
Accessories
Mist Eliminator / Demister Pad – Captures fine particulate and fume droplets from exhaust gas.
Spray Nozzles (FRP / PP / PVDF) – Ensures uniform distribution of scrubbing liquid over exhaust gases.
Recirculation Pump (Corrosion-Resistant) – Circulates scrubbing liquid continuously through the system.
Packed Bed Media – Provides high surface area for gas-liquid contact and effective scrubbing.
Chemical Dosing System – Automatically adds neutralizing agents for acidic or toxic fume
pH / ORP / Conductivity Sensors – Monitors scrubbing liquid to maintain optimal chemical balance.
FRP / PP / PVC Blower – Maintains proper airflow and suction through the scrubber.
Liquid Level Indicators & Float Valves – Ensures correct scrubbing liquid levels in the sump.
Control Panel – Integrates pumps, fans, chemical dosing, and alarms for safe operation.
Inspection Manholes – Provides easy access for maintenance, cleaning, and media replacement.
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