Wet Scrubber
Advanced Air Pollution Control Systems for Industrial Applications
Wet Scrubber
Wet Scrubbers are air pollution control devices that use liquid (usually water) to remove particulate matter and/or gases from industrial exhaust streams. They work by bringing the polluted gas stream into contact with the scrubbing liquid, effectively removing contaminants through absorption, chemical reaction, or particulate capture.
Product Overview
Wet Scrubber Technology
Wet Scrubbers are highly efficient pollution control devices that remove contaminants from industrial exhaust gases through direct contact with a scrubbing liquid. These systems are particularly effective for controlling particulate matter, acid gases, odorous compounds, and other hazardous air pollutants.
- High Efficiency: 95-99% removal efficiency for particulates
- Versatile: Handles gases and particulates simultaneously
- Corrosive Gas Control: Excellent for acidic/basic gases
- Temperature Control: Cools hot gas streams
- Fire/Explosion Prevention: Reduces fire hazards
- Odor Control: Effective for smell elimination
- Compact Design: Space-efficient installation
- Low Maintenance: Simple operational requirements
Technical Specifications
| Parameter | Specification | Details |
|---|---|---|
| Type | Venturi/Packed Bed/Spray Tower | Multiple design options available |
| Air Flow Capacity | 1,000 - 100,000 CFM | Customizable based on requirements |
| Removal Efficiency | 95-99.9% for particulates | 85-99% for gaseous pollutants |
| Pressure Drop | 2-15 inches WG | Depends on scrubber type |
| Liquid/Gas Ratio | 3-20 gallons/1000 CFM | Optimized for specific applications |
| Construction Material | PP, FRP, SS 304/316, Rubber Lined | Corrosion resistant materials |
| Temperature Range | Up to 400°F (204°C) | With cooling arrangements |
| Power Requirement | 5-100 HP | Based on system capacity |
Types of Wet Scrubbers
Venturi Scrubber
Features:
- High efficiency for fine particulates
- High pressure drop operation
- No moving parts in contact zone
- Excellent for sub-micron particles
Applications: Chemical plants, Metal processing
Packed Bed Scrubber
Features:
- High surface area for gas absorption
- Excellent for gaseous pollutants
- Low pressure drop
- Chemical absorption capability
Applications: Acid gas removal, Odor control
Spray Tower Scrubber
Features:
- Simple design and operation
- Low maintenance requirements
- Good for coarse particulates
- Gas cooling capability
Applications: Dust collection, Gas cooling
System Components
Scrubbing Section
- Scrubbing chamber/tower
- Spray nozzles/distribution system
- Packing media (for packed beds)
- Mist eliminator/entrainment separator
- Inspection ports and access doors
- Level indicators and gauges
Circulation System
- Recirculation pump(s)
- Chemical dosing system
- pH control system
- Make-up water system
- Drain and overflow provisions
- Pipework and valves
Air Handling
- Inlet ducting with damper
- Exhaust fan/blower
- Stack/exhaust chimney
- Access platform and ladder
- Rain cap/weather protection
- Sampling ports
Control System
- PLC/Control panel
- Flow meters and sensors
- Pressure gauges
- pH and conductivity meters
- Alarm and shutdown systems
- Remote monitoring capability
Pollutants Removed
Acidic Gases
- Sulfur Dioxide (SO₂)
- Hydrogen Chloride (HCl)
- Hydrogen Fluoride (HF)
- Nitrogen Oxides (NOx)
- Chlorine (Cl₂)
- Sulfuric Acid Mist (H₂SO₄)
Particulate Matter
- Dust and fumes
- Metal oxides
- Carbon particles
- Fly ash
- Cement dust
- Sub-micron particles
Other Pollutants
- Ammonia (NH₃)
- Mercury vapors
- Volatile Organic Compounds
- Odorous compounds
- Oil mists
- Smoke and soot
Industrial Applications
Chemical Industry
Acid gas scrubbing, Fume control in chemical manufacturing, Fertilizer plants, Pharmaceutical production, Dye and pigment manufacturing
Metal Processing
Pickling operations, Metal plating, Foundries, Steel mills, Aluminum smelting, Heat treatment operations
Power Generation
Coal-fired power plants, Waste-to-energy plants, Biomass combustion, Boiler flue gas treatment, Incinerator emissions
Waste Management
Medical waste incineration, Hazardous waste treatment, Municipal waste processing, Sewage treatment plants, Landfill gas treatment
Manufacturing
Paint spraying operations, Textile processing, Food processing, Plastic manufacturing, Glass production, Ceramic industry
Pulp & Paper
Kraft pulp mills, Paper bleaching, Chemical recovery, Digester vents, Lime kiln emissions, Smelt dissolving tanks
Advantages
Performance Advantages
- High removal efficiency for both gases and particulates
- Handles high temperature gas streams
- Excellent for corrosive and sticky materials
- Provides gas cooling and humidification
- Fire and explosion hazard reduction
Operational Advantages
- Compact design saves space
- Can handle fluctuating gas flows
- Minimal fire hazard compared to dry systems
- Can recover valuable byproducts
- Low maintenance requirements
Economic Advantages
- Lower capital cost than many dry systems
- Can use inexpensive scrubbing liquids
- Energy efficient operation
- Long equipment life with proper materials
- Compliance with environmental regulations
Environmental Advantages
- Meets stringent emission standards
- Reduces acid rain precursors
- Controls odor effectively
- Minimal secondary pollution
- Water can be recycled/reused
Maintenance Requirements
Daily Checks
- Pump operation verification
- pH level monitoring
- Water level checks
- Visual inspection
Weekly Maintenance
- Nozzle cleaning/inspection
- Chemical dosing system check
- Pump maintenance
- Sensor calibration
Monthly Inspection
- Packing media inspection
- Mist eliminator cleaning
- Corrosion checks
- Performance testing