Vertical
gas Scrubbers

Vertical gas scrubbers are used to remove pollutants such as sulfur dioxide, nitrogen oxides, fine dust, ammonia, and other acidic gases from gas streams. They play a key role in industrial processes (power plant combustion, metal processing, chemical production, waste incineration…) by reducing pollutant emissions and ensuring compliance with environmental regulations.

HOW DOES A GAS SCRUBBER WORK?

Vertical gas scrubbers operate on the principle of absorption (dissolving a substance into a liquid) and gas-liquid counterflow. The polluted gas stream flows upward through a packed column, while the scrubbing liquid is sprayed downward.

Through intensive contact between gas and liquid, harmful gas components are absorbed and trapped in the liquid. The purified gas exits the scrubber at the top, complying with emission standards, while the contaminated liquid is discharged or recycled.

The choice of absorption liquid and operating parameters depends on the type of pollution and is carefully calculated by our engineers. The term “vertical” refers to the scrubber’s orientation, where gas flows upward through the liquid.

BENEFITS OF A VERTICAL GAS SCRUBBER

High removal efficiency for harmful gas components.
Compact design requiring minimal space.
Low investment costs and controlled operational expenses.
Eco-friendly, reliable, and easy to maintain
Suitable for a wide range of applications, including acids, ammonia, and odor control.

In Detail

1. GAS INLET

Contaminated gas streams enter the scrubber. These gases may contain various pollutants such as sulfur dioxide (SO₂), nitrogen oxides (NOx), acidic gases (HCl, HF…), and fine particulate matter.

2.Liquid injection

A liquid, usually water or a chemical solution, is introduced into the scrubber system. This liquid flows downwardthrough the column.

3. Gas-liquid interaction

The polluted gas and the scrubbing liquid come into contact inside the column. Depending on the scrubber design, this process happens in different ways:
In spray scrubbers, the liquid is dispersed into fine droplets to maximize contact with the gas.
In downward flow scrubbers, the gas passes through a flowing liquid stream, enhancing pollutant absorption.

4. ABSORPTION OR CHEMICAL REACTION

During this interaction, pollutants in the gas are either absorbed into the liquid or undergo a chemical reaction with the scrubbing agent. The exact process depends on the type of contamination and the chemical composition of the scrubbing liquid

5. CLEAN GAS OUTLET

The purified gas exits the scrubber through the top, meeting the required emission standards.

6. DISCHARGE OF CONTAMINATED LIQUID

The liquid containing the absorbed pollutants is sent to a treatment system for filtration, neutralization, or recycling, depending on the process requirements.