Venturi Scrubber Systems
Wet Scrubbing Solutions for Dust, Fumes, Acidic / Alkaline Gases, CO₂ and Process Exhaust
Venturi Scrubber Systems are used to remove contaminated air, gases, fumes, fine particles and selected chemical pollutants from industrial processes. These high-efficiency wet scrubbing systems bring pollutants into contact with a liquid phase.
Air velocity rises in the Venturi throat, creating intensive contact between liquid droplets and pollutant particles or gases. The system can be engineered for CO₂, acidic / alkaline gases, process exhaust, flue gas, reactor ventilation and chemical-plant exhaust with project-specific materials, nozzles and scrubbing chemistry.
50 – 30,000 CFM Airflow
Custom designs are available for low and high airflow requirements.
Up to 99% Efficiency
High removal efficiency can be targeted according to pollutant type, chemical solution and contact time.
Multiple Material Options
PP, PP+FRP, carbon steel, SS 304 and SS 316 construction options are available.
What Is a Venturi Scrubber?
A Venturi scrubber is a wet gas-cleaning system that accelerates contaminated gas through a constricted throat. The gas then contacts the scrubbing liquid intensely. The accelerated gas stream breaks up liquid droplets and increases the contact area with particles and gas components.
These systems can be used for industrial exhaust cleaning, process ventilation, reactor vent lines, flue-gas scrubbing, chemical-plant exhaust, CO₂ removal and chemical absorption of different gas pollutants. Single-stage, multi-bed or chemical-dosing-controlled designs are selected according to the application.
Venturi Scrubber Operating Principle
Contaminated Air Inlet
A fan conveys contaminated air containing CO₂, fumes, process gases or particles into the scrubber system.
Acceleration in the Venturi Throat
The gas stream accelerates in the constricted section and creates high-energy contact with the scrubbing liquid.
Chemical Absorption
Pollutant gases react with a suitable chemical solution or sorbent and are transferred into the liquid phase.
Mist Separation and Clean Air Discharge
A mist eliminator reduces liquid carryover before treated air is discharged from the system.
CO₂ Scrubber Mechanism
In CO₂ scrubber applications, contaminated air contacts a chemical solution or sorbent material that can bind carbon dioxide molecules. CO₂ then transfers from the gas phase to a liquid or solid phase, and treated air leaves the system.
In alkaline scrubbing scenarios, CO₂ can react with a sodium hydroxide solution to form sodium carbonate. In regeneration scenarios, carbonate compounds may be converted back into reusable chemicals through suitable reactions.
Absorption reaction: 2NaOH(aq) + CO₂(g) → Na₂CO₃(aq) + H₂O(l)
Regeneration reaction: Na₂CO₃(aq) + Ca(OH)₂(s) → 2NaOH(aq) + CaCO₃(s)
Key Technical Features
Project-specific design from 50 to 30,000 CFM.
PP, PP+FRP, carbon steel, SS 304 and SS 316 housing options.
Up to 99% scrubbing efficiency may be targeted with suitable design and chemistry.
The lower housing can act as an integrated sump for recirculating scrubbing liquid.
Spray nozzles can be designed for top access.
A mist eliminator reduces liquid carryover.
Venturi Scrubber Technical Information
| Technical Feature | Value / Option | Description |
|---|---|---|
| Product type | Venturi scrubber / CO₂ scrubber | Used for wet scrubbing, gas absorption and particle removal. |
| Airflow | 50 – 30,000 CFM | Custom sizing according to process airflow. |
| Material options | PP, PP+FRP, carbon steel, SS 304, SS 316 | Selected according to gas chemistry, temperature and corrosion risk. |
| Scrubbing efficiency | Up to 99% | Depends on pollutant type, contact time and chemical solution. |
| Lower housing / sump | Integrated liquid tank | Used to recirculate the scrubbing liquid. |
| Spray nozzles | Top-access nozzle arrangement | Provides easier maintenance and inspection. |
| Mist eliminator | Mist separator | Reduces liquid carryover at the clean-air outlet. |
| Packing / bed design | Custom multi-bed design | Can address multiple pollutants with different scrubbing solutions. |
System Components
Increases gas velocity and intensifies liquid-pollutant contact.
Feed the scrubbing liquid into the gas stream in a controlled droplet pattern.
Transfers scrubbing liquid from the sump to the nozzle line.
Feeds suitable chemical solutions for CO₂ or other gas pollutants.
Limits liquid carryover into the exhaust air.
Allows different scrubbing solutions to be used for different pollutants.
Application Areas
Advantages of Venturi Scrubber Systems
Application Note
Consider airflow, CO₂ or other gas concentration, the required removal efficiency and chemical-solution type when selecting a Venturi scrubber. Also assess gas temperature, humidity, particle load, pressure drop, material selection, nozzle capacity, mist eliminator type, liquid recirculation rate, blowdown / drainage requirements and maintenance access.
Request Technical Support for Venturi Scrubber Selection
Venturi scrubber systems should be engineered according to process-gas characteristics, CO₂ concentration, airflow, chemical scrubbing scenario and material resistance.
Request a project-based technical assessment for Venturi Scrubber solutions for chemical plants, reactor vent lines, flue-gas exhaust, process ventilation and CO₂ removal.
