A demister, also known as a mist eliminator or wire mesh demister pad, is a passive separation device installed in the upper section of scrubbers, distillation columns, evaporators, and knock-out drums. It captures entrained liquid droplets from a gas or vapor stream before they exit the vessel, preventing product loss, downstream corrosion, and environmental non-compliance.
Our demister consists of multiple layers of knitted wire mesh laid between support grids. As droplet-laden gas passes through the mesh, inertial impaction and direct interception cause droplets to coalesce on the wire surfaces, grow larger, and drain downward by gravity. With proper mesh density and free volume selection, our standard pads achieve 99.9% removal efficiency for droplets 5 microns and larger, with outlet liquid carryover as low as 0.1–0.5 mg/Nm³.
We produce demisters in full compliance with BS 5502 (Petroleum and chemical industry standard) or customized per your vessel diameter (from 150mm to 8 meters). Mesh material options include: 304/316 stainless steel (general corrosion resistance), Monel (seawater / acidic brine), Teflon (PTFE for extreme chemical attack up to 200°C), polypropylene (PP for low-temp alkaline service), and FRP rods (for HF or strong acid mist). Thickness from 100mm to 300mm standard, with multi-layer designs (e.g., coarse + fine mesh combination) for high-mist-load applications. We also supply the complete support assembly (grids, hold-down bars, ring flanges) pre-drilled for field bolt-up.
Hebei Fortis Technology Co., Ltd Product Brochure
Product Advantages
Proven Removal Efficiency – Documented
Independent testing confirms >99.9% capture of droplets ≥5µm at design gas velocity. For larger droplets (>10µm), efficiency approaches 100%. We provide removal curves per droplet size range for your process conditions.
Low Pressure Drop – Saves Energy
Typical pressure drop across a standard 150mm-thick wire mesh demister is only 100–300 Pa (10–30 mmH₂O). Compared to vane-type separators that run 500–800 Pa, our mesh demister reduces fan or compressor energy consumption by 15–40%.
Wide Material Selection – Match Any Corrosive Service
– 304/316L SS: General chemical plants, steam drums
– 317L / Duplex 2205: Chloride stress cracking risk, seawater
– Monel 400: Hydrofluoric acid, marine brine concentrators
– Hastelloy C-276: Strong oxidizers, wet chlorine gas
– PTFE (Teflon): Aqua regia, hot concentrated acids, solvents
– PP (Polypropylene): Low-cost alkaline scrubbers, acid mist below 80°C
– FRP rods: HF service where metal corrodes instantly
Multiple Mesh Density Options
– Low density (140–180 kg/m³): High gas flow, coarse droplets (>20µm)
– Standard density (190–210 kg/m³): General purpose – recommended for most scrubbers
– High density (220–260 kg/m³): Sub-micron oil mist or very fine acid fume
Easy Retrofit & Field Serviceable
Segment-type demisters (half-moon or pie-cut panels) fit through manways as small as 450mm. Our removable grids allow pad replacement during a plant turnaround without cutting vessel shell. Full engineering drawings and installation manual provided.
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Tel.: +86 189 3266 2725
E-mail: sale@hbfortis.com
Add.: No.8-1, Zhenxing Street, Matun Town, Zaoqiang County, Hengshui City, Hebei Province
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