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Home / Blog / Wet Scrubber Equipment Guide: Working Principle, Models, Pricing Overview

Wet Scrubber Equipment Guide: Working Principle, Models, Pricing Overview


What is a Scrubber?

The scrubber equipment definition offers insight into one of the most effective methods for mitigating harmful emissions. Scrubber — a machine or system that uses liquids or reactive materials to neutralize or capture pollutants present in industrial emissions.
TORNADO Fluidized Bed Scrubber
TORNADO Fluidized Bed Scrubber

Working Principle of Scrubbers

Overview TORNADO-RP Vertical Scrubber With Random Packing
Here's a step-by-step description of the typical scrubber process equipment:
1. Intake of Polluted Gas Stream: The process starts with the intake of a polluted gas stream from a particular source, such as industrial emissions or combustion exhaust.
2. Contact with Scrubbing Medium: The polluted gas is directed into the scrubber where it comes in contact with a scrubbing medium. This medium can be a liquid (commonly water) or a dry compound, depending on the type of scrubber.
3. Dispersion of Scrubbing Medium: In wet scrubbers, the scrubbing liquid can be sprayed, misted, or bubbled through the polluted gas stream to ensure maximum contact between the gas and the liquid. The goal is to saturate the gas thoroughly.
4. Pollutant Capture: As the polluted gas stream comes in contact with the scrubbing medium, the pollutants are either:
  • Absorbed into the liquid or dry medium.
  • Chemically reacted with the scrubbing agent to form less harmful compounds.
5. Separation: Once the pollutants are captured or neutralized, the gas stream needs to be separated from the scrubbing medium:
  • In wet scrubbers, the polluted liquid, now called slurry or effluent, is collected at the bottom or drained out.
  • In dry scrubbers, the reacted solid compounds might be collected as waste.
6. Clean Gas Discharge: After separation, the cleaned gas is then released into the atmosphere or directed for further treatment, if necessary.
7. Treatment of Waste: The scrubbing medium, now containing the pollutants, needs to be treated or disposed of properly:
  • In wet scrubbing, the slurry or effluent might be subjected to further treatment to neutralize or remove the pollutants before disposal.
  • In dry scrubbing, the solid waste can be collected and managed as per environmental regulations.
8. Maintenance & Monitoring: Scrubbers are equipped with monitoring devices to ensure their efficiency. Periodic checks, maintenance, and cleaning of the system are necessary to ensure it operates effectively and complies with environmental standards.
9. Recirculation (if applicable): In some scrubber systems, the scrubbing liquid can be cleaned, treated, and recirculated back into the scrubber for reuse, reducing the overall consumption of the scrubbing medium.

Different types of scrubbers (e.g., venturi scrubbers, packed bed scrubbers, spray towers) may have variations in their process, but the general steps outlined above capture the essence of the scrubbing operation

Innovative Models of Scrubber Equipment

At our facility, we specialize in the production of wet scrubber equipment, tailored to meet diverse industry needs. No matter the complexity or type of gas purification system you require, we stand ready to deliver. Drawing from our extensive experience in scrubber manufacturing, we offer a quality guarantee.
Advantages of Torch-Air equipment:
  • Ecologist-approved
  • Over 10 years of service life
  • Easy installation and operation
  • 5-Year guarantee

Pricing Overview

The scrubber equipment price can vary significantly based on its design, capacity, and the specific requirements of the application it's intended for. Here are several factors that can influence the price of a scrubber equipment:
  • Material Construction: Scrubbers made from high-end materials, such as corrosion-resistant alloys or specialized plastics, may cost more than those made from standard materials.
  • Size and Capacity: Larger scrubbers designed to handle high volumes of gas typically come at a higher price point.
  • Type of Scrubber: Different scrubber designs (e.g., venturi, packed bed, spray tower) can have varying costs due to their complexity and components.
  • Efficiency and Performance: High-efficiency scrubbers with advanced features or those capable of removing multiple pollutants may be priced higher.
  • Customization: Custom-built scrubbers tailored to specific requirements or applications often carry a premium over standard models.
  • Installation and Setup: Costs related to the installation, integration with existing systems, or necessary infrastructure modifications can influence the overall price.
  • Maintenance Features: Scrubbers equipped with features that simplify maintenance or extend equipment lifespan can have a higher initial cost.
  • Additional Components: Inclusion of monitoring systems, control units, or any other supplementary components can also impact the price.
The cost of industrial scrubbers can vary widely based on their type, size, capacity, features, and manufacturer. Smaller units can start in the range of $5,000 to $100,000, while larger, complex systems for bigger industrial operations can range from $100,000 to several million dollars. These prices are broad estimates and can fluctuate based on the factors mentioned and the dynamics of the market.

Remember that while price is an important consideration, the long-term effectiveness, durability, and operating costs of the scrubber should also be taken into account when making a purchase decision. To obtain our scrubber equipment price list, you can simply fill out any form on our website and we will promptly provide you with the necessary details.

Scrubber Equipment Design

A scrubber is designed to remove pollutants from a gas stream, and its design is dictated by the specific requirements of the application, including the type and amount of pollutants, gas flow rate, and desired efficiency. Key components and design considerations include:
  • Inlet and Outlet: Designed to manage the flow of gas into and out of the scrubber.
  • Contact Chamber: Where the actual scrubbing takes place. Its design ensures maximum contact between the gas and the scrubbing medium for efficient pollutant capture.
  • Scrubbing Medium Dispersion: Mechanisms like spray nozzles, trays, or packing materials that help disperse the scrubbing medium (usually a liquid) to ensure optimal contact with the pollutants.
  • Packing Material: Used in some scrubbers (like packed bed scrubbers) to increase surface area for gas-liquid interaction, enhancing pollutant removal.
  • Separation Mechanism: After scrubbing, the gas is separated from the scrubbing medium, often using mist eliminators or cyclonic separators.
  • Collection Area: For collecting and removing the spent scrubbing medium or any precipitated pollutants.
  • Monitoring and Control Devices: Sensors and controls to monitor the performance and efficiency of the scrubber, adjusting parameters as needed.
  • Materials: The construction materials are chosen based on the nature of the gas and pollutants, ensuring corrosion resistance and durability. Common materials include stainless steel, fiberglass, or specialized plastics like polypropylene.
  • Recirculation System (if applicable): Some designs include a system for treating and reusing the scrubbing medium, reducing waste and operational costs.
  • Venting System: Designed to safely release the cleaned gas into the atmosphere or direct it to further treatment.
The specific design of a scrubber can vary based on its type (e.g., venturi, wet, dry, spray tower, packed bed) and the requirements of its application.

Chemical Scrubbers

Polypropylene chemical scrubbers are well suited for the chemical, metallurgical, food industries, mechanical engineering, pharmaceuticals, and laboratories. The devices are resistant to aggressive environments. Given the strict regulations set by environmental agencies globally, many manufacturing facilities have incorporated scrubber chemical equipment to effectively reduce hazardous emissions from their processes.

Plastic scrubbers purify the air from:
  • substances of an acidic nature: inorganic acids, acidic oxides, organic acids, hydrogen cyanide, chlorine, bromine;
  • substances of a basic nature: alkalis, ammonia, amines, soluble salts, alcohols, ethers, phenols;
  • other substances: hydrogen sulfide, odors, aldehydes, ozone, and others.
Advantages include:
  • The gas cleaning process virtually produces no waste.
  • Doesn't get clogged with various substances.
  • High resistance to variable loads.
  • Resistant to temperature fluctuations.
  • Ease of operation.
TORNADO-RP vertical scrubber with random packing
TORNADO-RP vertical scrubber with random packing

Scrubber Separator

A scrubber separator equipment effectively scrubs the contaminating compounds from a gas stream and then separates the cleaned gas from the used scrubbing liquid or the byproducts of the scrubbing process. This integrated functionality ensures that only cleaned gases are released, while the pollutants are retained and managed appropriately.
This equipment is often used in industries where emissions contain both gaseous and particulate pollutants. The scrubbing action captures or neutralizes the pollutants, and the separation action ensures the cleaned gas can be safely released or used in subsequent processes.

Investing in a reliable scrubber system equipment is crucial for industries aiming to meet stringent environmental regulations. With the information above, you're now better equipped to understand and make decisions regarding scrubber equipment. Contact us, and we'll help you choose the right equipment and offer the best solution!
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We always make extremely precise calculations and provide assistance in choosing the optimal cleaning systems, which usually takes 1 to 2 days.
Head of Engineering,
Vladimir Nikulin
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