Ventilation systems
Fume extraction and gas cleaning for surface finishing shops. Lip extraction removes vapours and mists directly at the bath surface, chemically resistant polymer ductwork carries them to treatment, and the cleaned air is discharged to atmosphere at a safe height.
Lip extraction and exhaust ductwork on an anodizing line
Lip extraction
Lip extraction is the core of local exhaust ventilation in a surface finishing shop: it captures vapours, gases and mists directly at the bath surface, before they can spread through the working area.
Because they sit in permanent contact with aggressive media, the hoods are made from chemically resistant polymers: polypropylene (PP) for most acid and alkaline duties, PVC up to +60 °C, and PVDF for particularly aggressive media and elevated temperatures.
Effective lip extraction protects the workforce, prevents corrosion of the building structure and the equipment, and is what keeps the plant compliant with occupational health and environmental requirements.
Exhaust ventilation and gas cleaning
The exhaust system removes aggressive vapours, gases and mists from the working area, carries the contaminated air through filtration or absorption equipment, and discharges cleaned air to atmosphere at a safe height.
Ductwork is built from chemically resistant materials; flanges and fasteners are corrosion-proof; seals are EPDM, Viton or PTFE depending on the media.
The corrosion-resistant fan is installed downstream of the filter or scrubber, on the clean-air side - which protects the motor and extends its service life. Discharge height is 1.5 m above the shop roof, so the plume clears the building's wake zone and is not drawn back into the air intakes.
Gas cleaning options
Fibre-bed mist filter
A vertical cylindrical unit with a fibrous filter media packing.
Wet scrubber
Wet cleaning: the contaminated gas contacts an irrigating liquid - water, alkaline or acid solution - neutralising and absorbing the harmful compounds.
We will size the ventilation for your line
Ventilation is engineered together with the line, as part of the complete project.