Spray Tower Wet Scrubber
Open-Tower Chemical Absorption Scrubber · Acid Gas Control
Spray Tower Scrubbers — 99.99% acid & toxic gas absorption at very low pressure drop.
A Ducon Spray Tower — also known as a Packed Tower, or CAT (Chemical Absorption Tower) — is engineered primarily to absorb and neutralize toxic gases including SO₂, HCl, H₂S, NOₓ, NH₃, and volatile organic compounds. It is a counterflow column with no internal packing media; instead, proprietary non-plugging spray nozzles distribute liquid to create the necessary mass-transfer surface area. By manipulating the air-to-water flow ratio and using advanced nozzle technology, these systems achieve over 99.99% removal efficiency at very low pressure drop. For higher removal efficiency, the proprietary DRX-25 two-fluid nozzle atomizes alkali-containing slurry inside the spray reactor.
How It Works
Spray Tower Wet Scrubber — operating principle.
Polluted gas enters the lower section and travels upward through the open tower; clean scrubbing liquid is introduced from above and falls as a fine droplet curtain across multiple distribution elevations. Soluble gas species transfer into the liquid phase; captured contaminants drain to a recycle sump.
A chevron or mesh mist eliminator removes carryover droplets before stack discharge. For dry FGD service, the proprietary DRX-25 two-fluid nozzle atomizes lime or limestone slurry inside the spray reactor, achieving high removal efficiency without a packed bed that could foul or plug on high-solids streams.
Key Features
Engineering details that matter.
Open Tower — No Packing
No media to foul or plug on dirty, high-solids gas streams.
Proprietary Non-Plugging Nozzles
Spray-nozzle design handles slurries cleanly at any L/G ratio.
DRX-25 Two-Fluid Nozzle
Proprietary nozzle atomizes alkali slurry in the spray reactor for high-efficiency dry FGD.
Multiple Liquid Distribution Levels
Counterflow configuration with staged liquid inlets for optimized contact.
Typical Applications
Where the Spray Tower Wet Scrubber is deployed.
Acid Gas Control
SO₂, HCl, H₂S, NOₓ, NH₃, and VOC absorption.
Wet & Dry FGD
Flue gas desulfurization for utility and industrial boilers.
Incineration
Municipal, medical waste, and waste-to-energy emission control.
Chemical Process & Pre-Quench
Reactor vent scrubbing, tank vents, saturator, and pre-quench service.
Specifications
Performance envelope.
Typical operating ranges across Ducon configurations. Final sizing varies per gas analysis.
| Parameter | Typical Range |
|---|---|
| Inlet gas flow | Up to 500,000 CFM (single module) |
| Acid / soluble gas removal | Up to 99.99% (reagent and stage dependent) |
| Pressure drop | 4 – 6 in. W.G. |
| L/G ratio | 15 – 60 |
| Inlet temperature | Up to 1,800 °F (with quench) |
| Reagent options | NaOH · Lime · Limestone · Soda Ash · Water |
| Mist eliminator | Chevron · Mesh pad · Two-stage |
| Materials of construction | FRP · Alloy-clad CS · 317L · 2205 · Rubber-lined CS |
Compare the Family
Other Ducon wet scrubber systems.
Engineering Consultation
Send your gas analysis. Get a sized Spray Tower Wet Scrubber.
Our application engineers respond within 48 hours with preliminary sizing, materials-of-construction recommendation, and budget-grade pricing — no obligation.