A boiler flue gas scrubber is a wet scrubber designed to control pollutant emissions from boilers burning fossil fuels like coal, oil, or natural gas. It removes harmful substances from the flue gas before it is released into the atmosphere. The scrubber operates by passing the flue gas through a chamber where it contacts a liquid spray, such as water or a chemical solution. This liquid absorbs pollutants, forming a slurry that is collected and treated before disposal. Different scrubber types, including packed bed, spray tower, and venturi scrubbers, are chosen based on the pollutants being targeted, boiler size, fuel type, and emission standards. Proper design and optimization ensure efficient pollutant removal while meeting regulatory requirements. Using a boiler wet scrubber reduces emissions of sulfur dioxide (SO2), nitrogen oxides (NOX), and particulate matter, improving air quality and ensuring environmental compliance.
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 NBFS - 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 NBFS - 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 NBFS - 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 NBFS - 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
Coal-Fired Power Plants – Removing SO2, NOx, and particulate matter from boiler flue gases.
Biomass & Wood-Fired Boilers – Scrubbing acidic gases and dust produced during biomass combustion.
Oil-Fired Boilers – Controlling sulfur dioxide and other acidic emissions from fuel oil combustion.
Gas-Fired Boilers – Reducing NOx and other combustion by products for environmental compliance.
Industrial Process Boilers – Treating flue gases in cement, chemical, and steel manufacturing units.
Incineration Plants – Neutralizing acidic gases and particulates from waste-to-energy boilers.
Textile Industry Boilers – Scrubbing SO2, NOx, and acidic vapors from coal or biomass-fired boilers.
Pulp & Paper Mills – Removing acidic flue gases generated from black liquor and recovery boilers.
Food Processing Boilers – Controlling emissions from steam generation using biomass, coal, or oil.
Hospital & Institutional Boilers – Treating flue gases from steam and hot water boilers for safe venting.
Accessories
Spray Nozzles – Distributes scrubbing liquid uniformly for maximum gas–liquid contact.
Recirculation Pump – Circulates scrubbing liquid continuously through the scrubber.
Mist Eliminator / Demister Pad – Removes fine droplets from the treated flue gas before discharge.
Packed Bed Media – Increases surface area for efficient absorption of acidic gases.
Chemical Dosing System – Adds neutralizing agents to treat flue gas pollutants.
pH / Conductivity Monitoring Sensors – Maintains proper chemical balance of the scrubbing solution.
FRP / PP / PVC Induced Draft (ID) – Maintains suction and steady airflow through the scrubber.
Liquid Level Indicators – Controls liquid levels in the scrubber sump to prevent dry running.
Control Panel – Monitors and controls pumps, fans, chemical dosing, and alarms.
Inspection Manholes – Allow maintenance, cleaning, and replacement of packing media or nozzles.
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