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Beirens - Multi-Flue Chimneys
Multi-flue chimneys comprise of several flue liners incorporated into a shell. The internal flues evacuate fumes. The structural shell makes the installation stable. Multi-flue chimneys are designed for all types of boilers, electricity generators, turbines and furnaces irrespective of the type(s) of fuel: gas, heating oil, heavy fuel oil, wood, coal, biogas and biomass. They are adapted to evacuate all types of waste and the smoke temperatures can reach 600°C. Multi-flue chimneys can be free-standing or self-supporting. They are suitable for all types of height (from 12m) and diameter to suit your operating appliance requirements.
- Perfectly designed stability for all chimney heights and dynamic loading (separate bearing shell)
- Extensive choice of design: finishes, decoration and forms
- Different generators, fuels and power capacities
- Personnel safety: secure and ventilated access facilities all the way up the chimney
- Easy to inspect, repair and upkeep
- Effective and long-lasting
Multi-flue chimney cap
The smoke flue inlet and head are the two sensitive parts of a chimney. Our design (internal ladder and tall door) means that you can inspect and repair your BEIRENS Multi-flue Chimney in complete safety. The high ventilation of the condenser tube plate (shown by the blue arrows) keeps the shell well-aired for personnel protection.
Inner assembling flange
The assembling flange connects the two elements to the shell. It is essential to guarantee the long life of the structure. Depending on the diameters and thicknesses, the flange is reinforced by gussets and belts, which prevent punching. The assembly flanges on multi-flue chimneys are usually internal to prevent water retention and give a flawless finish
- Separated welded shell
- Guiding without fixed point at the top of the chimney (condenser tube plate in stainless steel 1.4404 (316L) for free expansion of the flues)
- Chimney termination seal and return at the top in stainless steel 1.4404 (316L)
- Separate inner flues insulated by wired mineral wool, density 80kg/m3, thickness 50 to 100mm
- Head door in stainless steel 1.4404 (316L) with opening control at chimney base
- Ventilation at the bottom and top of the chimney
- Inspection door
- Condensation collection bottom trap with connection tube for rainwater on the flue
- Assembly by inner connecting flange
- Weighted index measuring point EN 13 284 2
- Base plate with reinforcement belt and gussets in steel 1.0038 (S235JRG2)
- Anchoring of single-piece chimney assembled in the workshop on two rings
- RAL shades finish
- Internal ladder with retractable rest landing
- Access door with natural ventilation
- Continuous measuring points
- Internal lighting: connected on chimney base
- 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 - Pads for temperature and dust measurements
- 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
- Storm collar
- Ejection cone by beirens