Integrated falling-film absorption tower with recirculation tank for acid gas recovery, HCl/SO₂ absorption and soluble VOC treatment. Custom-built in PP/PPH/FRP for chemical plants, pharmaceutical facilities and electroplating workshops.
Industrial Falling Film Absorber Systems
Integrated falling-film absorption tower and recirculation tank system engineered for high-efficiency recovery of water-soluble acid gases, including HCl, SO₂, NH₃ and selected soluble organics. The vertical tower directs absorbing liquid down the inner wall as a thin, stable film, maximizing gas-liquid contact while the lower recirculation tank stores, cools and recirculates the absorbing medium for continuous operation.
- High Absorption Efficiency for Water-Soluble Gases
- Integrated Recirculation Tank with Pump Circuit
- Corrosion-Resistant PP / PPH / FRP Construction
- Compact Skid-Mounted Layout for Easy Installation
- Customizable Diameter, Height and Material Combination
Falling Film Absorber System Product Overview
Our falling film absorber system combines a vertical absorption column with a dedicated lower recirculation vessel to form a complete, skid-mounted gas-liquid contacting unit. Gas enters the tower and flows counter-currently or co-currently against a uniformly distributed liquid film that runs down the column wall. This film configuration creates a large interfacial area with minimal liquid hold-up, enabling rapid mass transfer and high removal rates for highly soluble contaminants.
The recirculation tank positioned beneath the tower serves multiple functions: it collects the spent absorbing liquid, provides residence time for heat dissipation and reaction, and returns conditioned liquor to the top distribution system via a corrosion-resistant pump. Depending on the application, the system can be supplied with PP, PPH, FRP or PVC construction, with optional cooling coils, pH control ports and secondary scrubbing stages.
How the Falling Film Absorption Process Works
In operation, contaminated gas is introduced into the falling film absorber while absorbing liquid is distributed evenly across the top internal surface. The liquid descends as a thin film along the tower wall, continuously contacting the gas stream. Soluble pollutants migrate from the gas phase into the liquid phase and are carried down into the recirculation tank. The treated gas exits from the upper section, and the enriched liquid is either recirculated after conditioning or drawn off for further treatment or product recovery.
Typical Applications
- HCl gas absorption and hydrochloric acid recovery
- SO₂ scrubbing from combustion or process off-gases
- Ammonia (NH₃) removal in fertilizer and refrigeration plants
- Soluble VOC and alcohol vapor control
- Cl₂, H₂S and other water-soluble acid/alkali gases
Technical Specifications
| Material of Construction | PP / PPH / FRP / PVC (project-specific) |
| Gas Handling Capacity | [Customizable, m³/h — specify on inquiry] |
| Absorption Efficiency | ≥ [Customizable]% for highly soluble gases |
| Operating Temperature | ≤ [Customizable]°C (material-dependent) |
| Tower Diameter | [Customizable, mm] |
| Integrated Tank | Recirculation / storage tank with pump connection |
| Applications | HCl, SO₂, NH₃, soluble organics, Cl₂, H₂S |
Why Choose YFEP Falling Film Absorber Systems
With experience across more than 500 industrial gas treatment projects, YFEP designs each falling film absorber system around your gas composition, flow rate and available footprint. We supply complete documentation, installation guidance and after-sales support to ensure reliable, long-term emission compliance.
