FRP Wet Gas Scrubber

Wet gas scrubbers, also known as absorbers, play a vital role in reducing air pollution (SOx, NOx & Particulate reduction) and mitigating the environmental impact of industrial emissions. These devices are instrumental in removing harmful pollutants from the exhaust gases of industrial processes, power plants, and other facilities. One material that has gained popularity in the construction of flue gas absorbers is Fiberglass Reinforced Plastic (FRP). In this article, we will explore the working principles of flue gas absorbers and discuss the numerous advantages of using FRP in their construction.

Wet Gas Scrubbers: A Brief Overview

Wet Gas Scrubbersare air pollution control devices designed to remove noxious gases and particulate matter from industrial emissions. They are commonly used in various applications, including coal-fired power plants, chemical processing facilities, waste incinerators, and cement kilns, to name a few. Flue gas absorbers function on the principle of absorbing or chemically reacting with the pollutants in the exhaust gas, rendering them less harmful before the gas is released into the atmosphere.

Key components of a wet gas scrubber include:

  1. Absorption Tower: This is where the actual gas-liquid contact occurs. It typically contains a liquid absorbent, often an alkaline solution, which captures and reacts with the pollutants in the flue gas.
  2. Mist Eliminators: These devices are responsible for removing droplets of the liquid absorbent from the gas stream before it exits the absorber. This ensures that the clean gas is released into the environment.
  3. Exhaust Stack: The treated gas is expelled through the exhaust stack into the atmosphere after pollutants have been removed.

Advantages of FRP in Wet Gas Scrubbers

Fiberglass Reinforced Plastic (FRP) has become a preferred material for constructing various industrial equipment, including flue gas absorbers. Here are several advantages of using FRP in the design and construction of these crucial air pollution control devices:

  1. Corrosion Resistance: FRP is highly resistant to corrosion, making it an ideal choice for flue gas absorbers, which are exposed to acidic and corrosive gases. This resistance extends the lifespan of the absorber and reduces maintenance costs.
  2. Lightweight and High Strength: FRP materials are lightweight and exhibit impressive structural strength. This allows for easy installation and transportation while maintaining durability under harsh industrial conditions.
  3. Low Maintenance: The inherent corrosion resistance of FRP reduces the need for frequent maintenance and replacement of components, contributing to cost savings over time.
  4. Versatility: FRP can be molded into various shapes and sizes, making it adaptable to different absorber configurations and requirements.
  5. Chemical Resistance: FRP can withstand exposure to a wide range of chemicals, ensuring long-term reliability in applications where multiple chemical agents are present.
  6. Low Thermal Conductivity: FRP has low thermal conductivity, which can help maintain the absorber's temperature and prevent heat loss.
  7. Cost-Effective: FRP is often more cost-effective in the long run due to its durability and low maintenance requirements.


Wet Gas Scrubbers are indispensable tools in the battle against air pollution and environmental degradation caused by industrial emissions. The choice of construction material is critical in ensuring the effectiveness and longevity of these devices. Fiberglass Reinforced Plastic (FRP) has proven to be an excellent choice due to its corrosion resistance, lightweight strength, low maintenance requirements, and versatility. As the demand for cleaner air and more sustainable industrial practices continues to grow, the use of FRP in flue gas absorbers represents a significant step towards achieving these goals while maintaining the efficiency of industrial processes.

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