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Hot gas filtration and exhaust gas treatment in the chemical industry

Industrial processes generate exhaust gases at high temperatures (>240°C), which are increasingly being reused as an energy source at the same high temperature level. To achieve this, all dust particles must be filtered out of these gas streams to protect downstream heat exchangers from contamination.

At the same time, the necessary emission limits must be reliably met. These demanding gas streams place the highest demands on filtration: Only robust and temperature-resistant filter media ensure effective separation of fine dust, prevent deposits, and contribute to sustainable exhaust gas cleaning.
Hot gas filtration using GKD filter media combines temperature and chemical resistance with high filtration efficiency for maximum process reliability and emission control.

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Challenges in Practice

Temperatures up to 600 °C and higher
High dust loads and fine dust particles smaller than 1 µm
Fluctuating pressure and flow conditions
Requirements for long service life and easy cleaning

Solutions from GKD

GKD offers a wide range of metallic filter media for hot gas filtration:

Optimized Tressenge Webs (OT): Slit-shaped pores, high permeability, precise separation efficiency: ideal for the fine filtration of fine dust
Sintered laminates: Multi-layer, consolidated metal fabrics, dimensionally stable, chemically resistant, and temperature-resistant: perfect for high-pressure and high-temperature applications
Trimetric filter media: Combination of wire mesh and metal fiber fleece, high dust-holding capacity, regenerable, usable up to 600 °C

Technical Specifications

Materials: Stainless steel and special alloys for high temperature and chemical resistance
Retention rates: Up to 100%
Construction: Single- to multi-layer designs, optionally sintered or laminated
Cleaning: CIP-compatible, externally regenerable, backwashable
Design: Filter cartridges, plates, segments, or custom-made housing units

Benefits for operators

Process reliability: High separation efficiency, protection of downstream plant components
Cost-effectiveness: Longer service life, reduced downtime, energy savings due to stable pressure conditions
Durability: Temperature- and chemical-resistant, wear-resistant, dimensionally stable
Sustainability: Reusable metal filters, fully recyclable, microplastic-free
Flexibility: Custom filter solutions adaptable to existing filter equipment

Typical Applications

Exhaust gas cleaning
Gas filtration in biogas plants
Process gas filtration
Protection of heat exchangers, catalysts, and turbines
Hot gas filtration in dust removal for synthesis and combustion processes

Your next step

Improve the efficiency of your exhaust gas treatment with hot gas filtration from GKD. Our experts will work with you to develop the optimal solution, from design to implementation. Contact us for a personalized consultation and benefit from innovative filter media that make your processes safer, more economical, and more sustainable.