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Tower Scrubbers: Main Types, Features, and Common Applications

Date: 2023-07-19 | Author: Christine McAniff

Tower packing, also known as scrubber packing or media, plays a crucial role in chemical separation and mass transfer processes to remove gas and liquid pollution contaminants before they reach the atmosphere. Different types of tower packing are used for various air and gas treatment applications around the world. These complex systems rely on efficient mass transfer between the gas and liquid phases to remove pollutants and contaminants. Here we will explore the basics of different types of tower packing, their key features, and the common applications.

Packed Tower Scrubber

Understanding Tower Packing in scrubbers

Tower packing and mist eliminators are vital components of scrubber systems. These systems are also referred to as chemical scrubbers and gas scrubbers. Scrubbers function in the removal of particulates and gases from industrial exhaust streams. Tower packing located in the scrubber provides a large surface area for intimate contact between the gas and liquid phases. The tower packing facilitates the transfer of pollutants from the gas stream into the liquid phase, resulting in effective removal and purification.

Types of Tower Packing

  1. Random Packing: Random tower packing consists of irregularly shaped packing materials, mostly composed of metal and plastic that are randomly dumped into the tower. The irregular shapes are designed to maximize surface to volume ratio and maximize gas-liquid contact and minimize pressure drop. Tower packing types include different materials of construction, ranging from metals to plastics, glass and ceramics. Metals can include carbon steel, stainless steel, copper and titanium. Some examples of plastics are polypropylene, PTFE and PVC. Examples of random packing include saddle rings, Raschig rings, and Pall rings. Random packing is typically a cost-effective solution.
  2. Structured Packing: Structured tower packing differs to random packing in that it consists of precisely designed and arranged elements that provide uniform gas and liquid distribution. This type of packing offers higher efficiency and lower pressure drop compared to random packing. Structured packing is more expensive, yet offers higher efficiency, lower energy consumption, increased capacity, as well as lower pressure drop. Examples of structured packing include corrugated metal plates or gauzes, sheet metal, grid, or layers of pp mesh structure.

Key features of Tower Packing

  1. Large Surface Area: Tower packing provides a significant surface area for gas-liquid interaction, facilitating the efficient mass transfer and pollutant removal.
  2. High Efficiency: Scrubbers equipped with suitable packing offer high removal efficiency for a wide range of contaminants.
  3. Low-Pressure Drop: Well-designed tower packing minimizes pressure drop, ensuring energy-efficient operation and reducing operational costs.
  4. Corrosion Resistance: Tower packing materials are often selected for their excellent corrosion resistance to withstand harsh chemical environments.
  5. Better separation efficiency

Common Applications Which Require Tower Packing

  1. Air Pollution Control: Tower scrubbers are widely used in industrial processes to remove pollutants, such as sulfur dioxide (SO2), nitrogen oxides (NOx), particulate matter, and volatile organic compounds (VOCs). They help industries comply with emission regulations and improve air quality.
  2. Odor Control: Tower scrubbers effectively eliminate unpleasant odors by removing odor-causing compounds from gas stream, typically found in wastewater treatment plants, food processing facilities, and waste management facilities.
  3. Acid Gas Removal: Tower scrubbers equipped with suitable packing materials are used for the removal of acid gases, such as hydrogen sulfide (H2S) and hydrochloric acid (HCl), from industrial gas streams.
  4. Cooling Tower Water Treatment: tower packing is used in cooling tower water treatment to remove suspended solids, particulates, and other impurities.


Tower scrubbers equipped with efficient tower packing are essential for air and gas treatment in various industries. They offer high removal efficiency, low-pressure drop, and corrosion resistance, ensuring effective pollutant removal and compliance with environmental regulations. As a leading provider of tower packing and scrubber solutions, Kimre™ Clean Air Technology offers the Kon-Tane® Scrubber and Tower Packing, designed for optimal performance and reliability. To learn more about tower scrubbers and custom designed mist eliminators and tower packing, visit www.kimre.com to explore their comprehensive range of solutions.

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