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Air Filters and Chemical Filtration
Acid Gas Molecular Filter
A rigid molecular-filter cell filled with acid-targeted adsorbent to reduce corrosive gaseous contaminants before they reach clean processes and sensitive electronics.
- Acid-Selective Adsorbent
- Deep Media Bed
- Low-Dusting Retainers
- Gasketed Steel Cell
Product Introduction
This filter places a packed bed of impregnated activated alumina, activated carbon or hybrid pellets between perforated retaining screens. The chemically treated surface captures and reacts with acidic gases such as hydrogen sulfide, sulfur dioxide, chlorine and selected nitrogen oxides. A sealed galvanized or stainless-steel frame prevents bypass, while fine outlet scrim limits carryover of adsorbent dust into controlled air systems. The configuration is suitable for make-up air, recirculation and corrosion-control stages where ordinary particle filters cannot remove molecules.
Key Features
Impregnated media targets reactive acid gases rather than only general odours.
Corrosion-resistant screens support the pellet bed without obstructing airflow.
Replaceable or refillable constructions allow media selection to follow the contaminant profile.
Customer Product Concerns
Trace acidic gases can corrode contacts and process surfaces even when particulate air quality appears acceptable.
Copper and silver contacts tarnish despite high-efficiency particle filtration.An acid-selective adsorbent stage removes molecular contaminants that pass through particulate media.
Loose pellets settle and create an untreated path at the top of the cell.Vibration-filled media and internal compression retain an even bed throughout transport and operation.
Adsorbent dust migrates toward sensitive production equipment.Perforated retainers and downstream nonwoven scrim contain fines inside the filter cell.
A single carbon grade performs poorly against a changing acid-gas mixture.Activated alumina, impregnated carbon or hybrid blends can be selected for the actual contaminant spectrum.
Typical Applications
Semiconductor make-up airData-centre corrosion controlPulp and paper control roomsChemical process ventilationWastewater odour treatment
Technical Parameters
Typical construction ranges for an industrial acid-gas molecular filter are listed below.
| Core Material | Impregnated activated alumina, acid-grade activated carbon or hybrid spherical adsorbent |
|---|---|
| Panel Thickness | 150–292 mm overall filter depth |
| Effective Width | 305–610 mm nominal cell width |
| Maximum Length | Up to 610 mm nominal cell height |
| Steel Facing Thickness | 0.8–1.2 mm galvanized or 304 stainless-steel frame and screens |
| Core Density | 550–850 kg/m³ packed adsorbent bulk density |
| Thermal Conductivity | 0.10–0.25 W/(m·K) for the packed adsorbent bed |
| Surface Finish | Clean galvanized steel, brushed 304 stainless steel or white powder coat |
| Joint Type | Rigid box cell with sealed media screens and continuous neoprene or EPDM face gasket |
| Customization | Available based on the intended application and operating environment. |
Available Options
Impregnated alumina or carbon mediaGalvanized or stainless-steel frameHalf-size and full-size cellsRefillable or disposable construction
Planning a Acid Gas Molecular Filter specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
