Cleanroom Utility Systems

Acid Mist Purifier

Compact vertical PP-H packed-bed purifier with an integral recirculation sump, liquid distributor and mist eliminator for compatible acid-mist and soluble acid-fume exhaust.

Counter-current packed bed for gas-liquid contact
Corrosion-resistant welded PP-H flow path
Integrated recirculation, demisting and pH interfaces

Request a Quote Browse Products

Product Introduction

The Acid Mist Purifier is a compact vertical wet-scrubbing unit for local exhaust containing compatible acid aerosol and water-soluble acid fumes. Contaminated air enters below the packed section and rises against recirculating neutralizing liquid distributed across the media. The packing provides the transfer area needed for absorption, while the upper droplet eliminator limits liquid carryover before the cleaned stream reaches the outlet. A welded PP-H tower, integral sump, corrosion-resistant pump and accessible service points form one coordinated assembly. Pollutant chemistry, droplet loading, airflow, liquor selection, packing depth, pressure drop, blowdown and fan duty are configured for the actual process rather than assumed from the catalogue image.

Key Features

Vertical counter-current flow provides a long contact path within a compact floor footprint

High-surface-area random packing promotes wetting and mass transfer without complex moving internals

A top-mounted mist eliminator captures entrained droplets before air enters the downstream duct

The integral sump reduces external pipework and keeps the recirculation loop close to the tower

Welded PP-H construction resists many dilute acids and common neutralizing solutions when compatible

A corrosion-resistant pump returns conditioned liquor to the internal spray distributor

Level, pH and conductivity connection points support controlled make-up, dosing and blowdown strategies

Separate packing and demister access points simplify inspection without dismantling the full tower

Flanged inlet and outlet collars allow alignment with corrosion-resistant exhaust ductwork

Optional staged beds can address changing gas loads or chemically different acid components

Customer Product Concerns

Reliable acid-mist control depends on matching the purifier to the actual pollutant and keeping the gas-liquid contact system stable as process load changes.

A scrubber selected only by duct diameter may have insufficient contact time for the real acid loadSize airflow, packing depth, liquid rate and chemistry from measured gas composition, concentration, temperature and required outlet condition.

Poor liquid distribution can leave dry channels through the packing and reduce absorptionUse a correctly sized spray distributor, maintain nozzle cleanliness and verify uniform wetting during commissioning and inspection.

Salt accumulation can block packing, nozzles or the sump recirculation lineSet make-up and blowdown from liquor analysis, monitor conductivity where useful and provide accessible flushing points.

Mist carryover can wet downstream ductwork even when gas absorption is adequateSelect a suitable droplet eliminator, control face velocity and wash or clean the element before pressure drop becomes excessive.

An incompatible plastic, gasket or pump component can fail in mixed-acid serviceReview normal and upset chemistry, concentration and temperature against every wetted material before release for fabrication.

The purifier can lose capture if the exhaust fan cannot overcome dirty-system resistanceInclude clean and fouled pressure losses in fan selection and trend differential pressure across the bed and demister.

Typical Applications

Semiconductor wet benches and compatible acid-process exhaust branchesElectroplating, anodizing and metal-pickling ventilation systemsChemical dosing, transfer and storage-tank vent collectionLaboratory acid cabinets and centralized corrosive-fume exhaustBattery-material and electronics processes using soluble acid chemicalsPharmaceutical and specialty-chemical operations requiring local acid-fume abatement

Technical Parameters

The displayed basis is a compact welded PP-H vertical purifier with an approximately 1000 mm tower diameter, 3200 mm overall height and 8-12 mm fabricated shell wall. These dimensions establish a credible catalogue object only. The site's fixed ten-row schema uses panel-oriented labels; Effective Width therefore records tower diameter and Steel Facing Thickness confirms that no separate metal facing is used. Final airflow, bed depth, pump duty, liquor chemistry, fan selection and materials follow the intended exhaust service.

Core Material	Welded PP-H tower and integral sump with polypropylene packing and demister, corrosion-resistant recirculation components and chemically selected seals
Panel Thickness	8-12 mm representative fabricated PP-H shell wall, finalized from diameter, temperature, pressure and structural loads
Effective Width	1000 mm representative outside tower diameter for the selected compact vertical display basis
Maximum Length	3200 mm representative overall purifier height including sump, packed section, demister and outlet collar
Steel Facing Thickness	0 mm separate steel facing; the displayed gas-contact shell and reservoir are fabricated PP-H
Core Density	Approximately 915 kg/m³ representative density for PP-H fabrication material
Thermal Conductivity	Approximately 0.22 W/(m·K) near room temperature for representative PP-H material
Surface Finish	Smooth warm-light-gray welded PP-H exterior with natural-blue pump housing, gray process piping and restrained instrument colors
Joint Type	Extrusion- or hot-gas-welded PP shell seams with gasketed PP duct flanges, union pump connections and removable packed-bed service cover
Customization	Available based on the intended application and operating environment.

Available Options

Vertical or horizontal packed-bed arrangement for available service spacePP-H, flame-retardant PP, PVC, FRP or selected alloy constructionSingle or multiple packed stages for compatible pollutant mixturesWater, caustic or alternative application-selected scrubbing liquorAutomatic pH dosing, make-up water and conductivity-controlled blowdownDuplex recirculation pumps and duty/standby controlMesh-pad or chevron droplet eliminator with wash headerDifferential-pressure, level, flow and temperature instrumentationIntegral corrosion-resistant fan, remote fan or fan-free supply scope

Planning a Acid Mist Purifier specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

Talk to Our Team