Zohal - Wet Scrubber for Chemical Industries

How a Wet Scrubber Works in Chemical Industries

1. Contaminated Air Intake:

   • Polluted air containing acidic gases (HCl, SO₂, NOx), solvent vapors, dust, and chemical fumes is drawn into the scrubber.

2. Scrubbing Process:

   • The air passes through a chamber where it is sprayed with water, alkaline solutions (NaOH), or other neutralizing chemicals.

3. Gas-Liquid Interaction:

   • The scrubber contains spray nozzles, packed bed media, or venturi sections to maximize gas-liquid contact, allowing pollutants to dissolve or react with the scrubbing liquid.

4. Mist Elimination & Clean Air Release:

   • The air passes through a demister or mist eliminator, removing excess moisture before releasing clean, treated air into the environment.

5. Waste Collection & Disposal:

   • The used scrubbing liquid, now containing neutralized pollutants, is collected in a sump and sent for proper wastewater treatment or disposal.

Types of Wet Scrubbers Used in Chemical Industries

1. Packed Bed Scrubber:

   • Used for removing acidic gases (HCl, SO₂, NOx), ammonia, and solvents.
   • Contains a high-surface-area packing material for efficient gas absorption.

2. Venturi Scrubber:

   • Best for capturing fine particulates and chemical dust.
   • Uses high-velocity air-liquid interaction for maximum efficiency.

3. Spray Tower Scrubber:

   • Cost-effective solution for moderate pollution control.
   • Uses multiple spray nozzles to disperse scrubbing liquid.

4. Multi-Stage Scrubber:

   • Ideal for handling multi-pollutant emissions from complex chemical reactions.
   • Combines gas absorption, particulate removal, and chemical neutralization.

Advantages of Wet Scrubbers in Chemical Industries

• High Efficiency (99% Removal Rate) – Eliminates toxic gases, acid mists, and fine particulates.
• Chemical Corrosion Resistance – Built with FRP, PVC, SS316, or other corrosion-proof materials.
• Regulatory Compliance – Meets EPA, OSHA, CPCB, and other environmental standards.
• Customizable for Different Pollutants – Can be designed for acidic, alkaline, or organic emissions.
• Worker & Environmental Safety – Prevents exposure to hazardous fumes and improves air quality.

A wet scrubber is an essential pollution control system for chemical industries, ensuring cleaner emissions, environmental compliance, and workplace safety while handling hazardous chemical pollutants.