VENTURI WET SCRUBBER

Overview

INTRODUCTION

Venturi Wet Scrubber

1- Structure and Operating Principles

Design:

Features a narrow section in the middle (Venturi throat) with wider openings at both ends. The absorbent solution is sprayed into the gas stream at the narrowest point.

Operating Principles:

• Exhaust gas is introduced at high velocity through the narrow section of the Venturi tube.
• The absorbent solution is sprayed directly into the high-speed gas stream.
• The intense collision between gas and liquid removes fine particles and pollutants from the gas stream.

Gas Flow Rate:

High, typically designed for treating exhaust gases with high velocities.

Efficiency:

Highly effective at removing fine dust particles and hazardous gases.

Advantages:

• Excellent efficiency in removing fine particles (e.g., PM2.5, PM10).
• Can handle high-velocity and high-concentration polluted gas streams.
• More compact size compared to the Spray Tower.

Disadvantages:

• Consumes more energy due to the need for high gas velocity.
• Higher investment and operating costs.
• Maintenance is more challenging due to the complexity of the design.

Applications:

• Treatment of exhaust gases from heavy industries, such as kilns, power plants, and cement production.
• Highly effective for gases containing ultrafine particles and SOx, NOx pollutants.

2- Summary of Differences:

 

Criteria	Spray Tower Scrubber	Venturi Wet Scrubber
Design	Vertical tower with spray nozzles	Venturi-shaped tube with a narrow section to increase velocity
Gas Velocity	Low	High
Dust Removal Efficiency	Low, effective for large particles	High, capable of handling fine dust
Gas Treatment Efficiency	Effective for easily soluble gases	Effective for high-concentration gases
Operating Costs	Low	High
Main Applications	Light industries	Heavy industries

REFERENCE

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