Wet Scrubber

How Does It Work?

Venturi scrubbers are workhorses in the air pollution control industry. Here’s a breakdown of their key components and how they work together to clean gas streams:

The Venturi Chamber: Where High Speed Meets Water Spray
This chamber consists of three sections:

• Convergent Section: Dirty gases enter here and accelerate due to the narrowing passage.
• Throat Section: This is the point of highest velocity and turbulence. Here, a jet spray nozzle injects a high-pressure stream of water. The forceful spray effectively breaks down dust particles and promotes gas absorption into the water.
• Divergent Section: As the gas stream expands in this section, its velocity decreases. This allows the water droplets containing captured particles and dissolved gases to separate and fall out the bottom.

The Scrubbing Chamber: A Second Stage of Purification

• Cylindrical Chamber: Partially cleaned gases enter tangentially, creating a swirling motion (cyclone effect) that further aids in particle separation.
• Mist Eliminator Pads: These specialized pads capture any remaining water droplets entrained in the gas stream, ensuring clean air exits the scrubber.

Water’s Role in the Scrubbing Process:

• Recirculation: Water used for scrubbing is collected at the bottom of the chamber and continuously recirculated, minimizing water usage.
• Slurry Removal: The captured dust particles form a slurry with the water, which is periodically removed from the system.