Beirens - Double-Wall Chimneys
From Chimneys
Double-Wall chimneys are metal industrial chimneys comprising a bearing structure (external wall) for stability and an internal heat insulated flue liner for evacuating fumes. Double-wall chimneys are designed for all types of boilers, electricity generators, turbines, furnaces and all fuel types: gas, heating oil, heavy fuel oil, wood, coal, biogas and biomass. They are adapted to evacuate all types of fl ue gases. The smoke temperature can reach 1,200°C or more. Double-wall chimneys can be tied, free-standing or guy wired. They can be adapted to all types of height (from 12m) and diameter to suit your operating appliance requirements.
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Product Details
- Excellent stability thanks to the bearing structure
- Reliability of chimney
- All heights
- Technical response to the legislative and environmental requirements
- Adaptation of liner material to operating conditions
Specific technical features
Details of a double-wall chimneys
The bearing shell is kept ventilated by an air gap between the mineral wool and outer wall. Insulation by mineral wall prevents any acidic condensation. The wool is wired to ensure mechanical resistance all the way up the chimney
External flanged joint
The flanged joint connects the two elements to the bearing shell. It is essential to guarantee the long life of the structure. Depending on the diameters, stress and thicknesses, the flange is reinforced by gussets and belts, which prevent punching. The flanged joints on double-wall chimneys can be external. They are painted for protection. Internal flanges can be provided if required for aesthetical purposes.
Standard Model
- Outer wall made from steel 1.0038 (S235JRG2)
- The chimney termination seals are made from stainless steel 1.4404 (316 L)
- Smoke flue in diverse types of material depending on the application
- Insulation air gap and/or mineral wool, 50 x 200mm thick, density 80 to 100kg/m3
- Inspection door
- Evacuation of condensation
- RAL shades finish
- Internal flanged joint
Options
- Lightning conductor system: stainless steel rods comply with local regulations with “crow’s foot” earth connection,copper plate outside heat insulation and lightning meters
- Fall arrest system ladder compliant with NF EN 353-1, fixed hoop ladder with landings or offset flights (height between two landings to 6m according to NFE 85-016 and ISO 14122-4, height between 2 platforms, so a single section to 8m according to NFE 85-016 and to 10m according to ISO 14122-4). Specific compliance on demand. Inspection platform and work platform compliant with NFE 85-014 or
- ISO 14122-2. Specific compliance on demand.
- Access door
- Manhole
- Weighted index measuring point EN 13 284 2
- Continuous measuring points
- Aircraft warning day-time marking: with paint red and white stripes
- Aircraft warning night-time marking: high-intensity duty/standby lamps to be supplied from chimney base
- Acoustic treatment by beirens: absorptive silencers (bulbs, baffles, absorbent wall), reactive silencers (single chamber, double-chamber, wave resonators)
- Vibration loading treatment: dynamic vibration damper by beirens
- Stainless steel mirror finish, all RAL shades or custom-made decoration
- External flanged joint
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