What is a fiber bed mist eliminator?

A fiber bed mist eliminator is an industrial gas-liquid separation device that removes submicron liquid droplets (0.1–3μm) from gas streams using a packed bed of fine PTFE or glass fibers. It achieves >99.96% mist removal efficiency through inertial impaction, direct interception, and Brownian diffusion.

What is the difference between a fiber bed and a wire mesh demister?

Wire mesh demisters capture coarse droplets larger than 3–5μm by inertial impaction. Fiber bed mist eliminators capture submicron droplets (0.1–3μm) with >99.96% efficiency, making them ideal for sulfuric acid, chlor-alkali, and corrosive fine acid mist applications.

What materials are used for sulfuric acid service?

For sulfuric acid mist elimination, PTFE (polytetrafluoroethylene) fibers are used for maximum chemical resistance. Shell materials typically include PP, FRP, or alloy steel with PTFE lining for high-temperature concentrated acid.

Why source fiber bed mist eliminators directly from the Filtearth factory?

Sourcing directly from Filtearth eliminates 20% to 35% intermediary trading markups and avoids communication delays. Plant managers and EPC contractors gain direct access to our core filtration engineers for superficial velocity and pressure drop (ΔP) simulations, custom alloy fabrication, and mill test certificates.

Can Filtearth provide drop-in replacements for existing Brink or FLEXIFIBER candle filters?

Yes. Filtearth manufactures custom-engineered candle filters that fully match the dimensions, flange types, pressure drop profiles, and efficiency ratings of major original equipment brands, enabling seamless installation without modifying existing tower internals or vessel tubesheets.

What fiber media is used in Filtearth fiber bed mist eliminators?

Filtearth uses specialized technical fibers custom-selected for extreme chemical resistance and temperature stability. For high-concentration sulfuric acid, chlor-alkali wet chlorine, and corrosive gases, the fiber bed density is precision-wound to achieve optimal Brownian motion diffusion with sub-micron mist capture above 99.9%.

What information is required to get a sizing and pressure drop calculation?

To calculate the required number of candle elements and predicted pressure drop (ΔP), we require: actual volumetric gas flow rate (Am³/h or ACFM), operating temperature, operating pressure, gas composition, acid mist loading (mg/Nm³), and target allowable pressure drop limit.

What is a fiber bed mist eliminator?

A fiber bed mist eliminator is an industrial gas-liquid separation device that removes submicron liquid droplets (0.1–3μm) from gas streams using a packed bed of fine special technical fibers or PTFE. It achieves >99.96% mist removal efficiency through inertial impaction, direct interception, and Brownian diffusion.

What is the typical mist capture efficiency of a fiber bed mist eliminator?

For submicron droplets smaller than 1μm, our fiber bed mist eliminators reach an efficiency of up to 99.96%, significantly outperforming conventional wire mesh demisters.

Can Filtearth provide replacement elements for existing vessel installations?

Yes, Filtearth manufactures custom aftermarket replacement fiber bed elements dimensionally and aerodynamically matched to existing vessel installations without requiring piping or flange modifications.

Candle Filter Replacement & Drop-in Elements | Direct Manufacturer

High-performance fiber bed candle elements engineered to match and exceed international OEM standards. Perfect drop-in replacement with exact dimensional tolerances and zero-bypass sealing for your existing mist eliminator vessels.

Consultation Details

Filtearth manufactures custom drop-in replacement elements for industrial mist eliminators. Whether upgrading an existing plant or sourcing routine candle filter replacement units for sulfuric acid or chlor-alkali towers, our elements are fabricated to exact dimensional standards (flange OD, total length, bolt circle) to ensure seamless installation with zero vessel modification. Each element delivers a verified 99.96% collection efficiency for submicron acid mist with an initial pressure drop of 500–1200 Pa.

1:1 Drop-in Replacement for Existing Mist Eliminator Vessels

To ensure a precise candle filter replacement, Filtearth engineers evaluate the original process conditions, existing flange configurations, and cage metallurgy. You can order drop-in replacement units by providing the following baseline parameters:

Element Outer Diameter & Overall Height (e.g., standard candle sizes)
Mounting Style: Flange-hung (hanging) or standing (bottom-supported)
Flange Drilling Pattern: Bolt circle diameter (PCD), bolt hole count, and gasket surface dimensions
Operating Media: Gas flow rate, acid mist concentration, and operating temperature
Cage Metallurgy: 316L stainless steel, Alloy 20, Hastelloy, Titanium, PP, or FRP

What is a Candle-Type Filter Element?

In industrial gas cleaning and acid mist recovery, fiber bed mist eliminators are commonly designated as candle-type filter elements or mist eliminator candles. Engineered for demanding sulfuric acid, chlor-alkali, and chemical processing systems, these candle elements capture submicron liquid droplets with high efficiency via Brownian diffusion and impaction mechanisms.

standing candle-type filter element for acid mist elimination — Flanged top or bottom configurations; manufactured with Derakane 470 GRP or 316L/Hastelloy structures.

Direct OEM Replacements for International Candle Mist Eliminators

Filtearth provides precision-engineered candle filter elements as direct drop-in replacements for standard international brand vessels. With custom structural cage materials including GRP Derakane 470, 316L stainless steel, Hastelloy C-22, and Titanium, our candle-type filter elements ensure seamless mechanical fit, superior chemical resistance, and zero-bypass sealing.

candle-type filter element installation and assembly

corrosion-resistant cage for candle filter element

fiber bed candle filter element replacement

Technical Specifications & Material Configurations

Parameter	Specification & Options
Collection Efficiency	>99.96% for submicron mist (<0.5 μm); 100% for particles >3 μm
Element Design	Standing (flow in-to-out) & Hanging (flow out-to-in) candle configurations
Structural Cages	GRP Derakane 470, SS316L, Titanium, Hastelloy C-22 / C-276
Filter Bed Core	European imported special glass fiber / carbon fiber / PP
Sealing & Fasteners	Expanded PTFE (ePTFE) joint sealant tape, Titanium/Hastelloy bolts
Pressure Drop	Typically0.5 –1.5 kPa (customized per operational gas flow)
Custom Dimensions	Fully tailored drop-in replacements for standard international vessels

Industrial Applications for Candle-Type Mist Eliminators

Sulfuric Acid Production: Installed in drying towers, interpass absorption towers (IPAT), and final absorption towers (FAT) to protect downstream equipment, blowers, and catalyst beds.

Chlor-Alkali Processing: Designed for wet chlorine gas cooling, chlorine liquefaction, and dry chlorine purification lines.

Phosphoric & Nitric Acid Plants: Highly effective at eliminating ammonium nitrate plumes and fine phosphoric acid mists.

Petrochemical & Gas Plants: Used in compressor lube oil mist collection, plasticizer exhaust, and amine scrubbing systems.

Frequently Asked Questions (FAQ)

A candle-type filter element (commonly known as a fiber bed mist eliminator candle) is a vertically installed cylindrical filtration device designed to capture fine liquid aerosols and submicron droplets (< 0.5 μm) using Brownian diffusion and impaction mechanisms. It is widely used in sulfuric acid, chlor-alkali, and chemical processing facilities.

Yes. Filtearth manufactures precision-engineered candle filter elements as direct dimensional and functional drop-in replacements for standard international mist eliminators. We match original vessel dimensions, flange interfaces, and metallurgy (GRP Derakane 470, 316L, Titanium, Hastelloy) to ensure zero bypass and seamless fit.

Filtearth offers structural support cages built from GRP (Derakane 470 vinyl ester resin), 316L stainless steel, Titanium Grade 2, and Hastelloy C-22 / C-276, packed with high-purity imported borosilicate glass fibers and sealed with expanded PTFE (ePTFE) joint sealant tape.

The element achieves greater than 99.96% collection efficiency for submicron liquid particles (< 0.5 microns) via Brownian diffusion, and essentially 100% removal efficiency for larger liquid droplets (> 3 microns) via inertial impaction.

Request a Quotation & Engineering Support

Need custom candle-type filter elements or urgent replacement units for your plant? Contact Filtearth’s technical engineering team directly with your drawing or operating parameters.

Email: [email protected]
WhatsApp / Phone: +86 159 3651 0880
Official Website: https://filtearth.com