Vent Gas Scrubber Systems: Design, Applications, and Cost Guide

Author: Michael Klepik, Chief Executive Officer

What is a vent gas scrubber?
It is a device designed to clean the air passing through a ventilation system from contaminants such as dust, vapors, aerosols, grease, gases, and other harmful substances.
Unlike conventional filters, scrubbers often use liquids or chemical solutions to absorb and neutralize pollutants.

A dry scrubber ventilation system uses solid sorbents or catalytic materials instead of liquids.

A scrubber is considered a ventilation-type unit when it is used as part of a ventilation system to clean the air.

• Spray vent gas scrubber system (also called spray column) is a hollow structure that contains only spray nozzles which disperse liquid.
• Packed bed towers contain special packing elements that increase the surface area for phase contact, improving mass transfer efficiency.
• Tray towers enable prolonged and intense contact between phases by forming a stable foam layer or turbulent liquid bed inside the column. This is achieved using specially designed trays that promote turbulence and foaming.
• A Venturi scrubber ventilation set up works by accelerating the gas stream through a narrowing section, where it mixes intensively with sprayed liquid. The high velocity and turbulence allow for efficient capture of fine particles and aerosols, including pollutants smaller than 1 micron.
• Tank vent scrubber is designed for controlling localized emissions from storage tanks and vessels. It typically features a compact design with minimal pressure drop, using a packed or spray section to neutralize or absorb vapors such as VOCs, solvents, or corrosive gases released during filling or venting operations.

The Droplet Mist Eliminator is designed to remove moisture droplets from air after wet scrubber ventilation systems, air coolers, and hydrofilters. It consists of a metal housing with zigzag baffles, a drainage tray, and a collection pan.

Key benefits:

• Effectively captures droplets ≥20 microns;
• Service life over 10 years;
• Modular assembly without welding;
• Easy installation without modifying ductwork.

Why is a mist eliminator important?
After air passes through a spray or cleaning zone, it often retains moisture droplets and fine aerosols. If not removed, these can:

• Damage ventilation equipment through corrosion;
• Raise humidity to unacceptable levels in sensitive zones (labs, food production);
• Contain hazardous compounds that may be released into the atmosphere.

Mist eliminators are plate or fiber sections that trap droplets ≥10–20 microns with up to 99% efficiency. They are usually installed after the main chamber.

TORCH Profi
Heavy-duty air purification and spark suppression for restaurants, cafes, pizzerias, and other facilities with open flame — such as grills, wood/coal ovens, barbecue stations, and saunas.
Airflow capacity: 600 to 12,000 CFM (≈1,000–20,000 m³/h)
Efficiency: 100% spark suppression, 95% grease, soot, ash removal, ≥40% smoke and odor reduction.
Construction: Modular stainless steel housing, temperature-resistant up to 250 °C; includes water spray system, labyrinth packing, and mist eliminator.
Automation: Monitors water level, temperature, and alarms; includes self-cleaning system.

TORCH Mini
Compact vent gas scrubber for air cleaning, spark suppression, and removal of grease, smoke, and odors — ideal for cafes, BBQs, pizzerias, and grills where space is limited.
Airflow capacity: 100 to 6,500 CFM (≈170–11,000 m³/h)
Efficiency: 99% spark suppression, 95% grease, ash, soot removal, ≥40% smoke reduction, ≥20% odor reduction.
Design: AISI stainless steel body, modular, tool-free maintenance.
Mounting options: Horizontal (natural draft) or vertical (with fan if needed).
Water: Works with water supply or recirculation system.

These units expand our product line to meet a range of ventilation air cleaning needs — from powerful Profi equipment for high-load kitchens, to space-saving Mini installations for smaller foodservice locations.

Our vent gas scrubber factory is equipped with advanced technology to produce high-quality equipment that meet industry standards.

When planning to improve your facility’s air quality, understanding the wet scrubber ventilation costs is crucial for budgeting and project planning. In the US, prices for this type of equipment typically range from $5,000 to $50,000 or more, depending on the size, capacity, and specific features. Smaller units designed for restaurants or cafes usually cost between $5,000 and $15,000, while large industrial installations can exceed $50,000.

Whether you need a compact setup for a small kitchen or a large-scale system for industrial use, we have solutions tailored to your requirements. Additionally, we offer free consultations to help you navigate technical specifications and budget planning, ensuring the most efficient and cost-effective solution for your ventilation needs.

Contact us today to receive your personalized pricelist and learn more about how our equipment can enhance air quality while fitting your budget.