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AFBC Boilers

Atmospheric Fluidised Bed Combustion Boilers

AFBC (Atmospheric Fluidised Bed Combustion) boilers are an effective technological solution for generating steam and power. They can efficiently burn a wide range of fuels — including those with high ash content, high fines content, and high alkali content in biomass — while achieving combustion efficiency over 85%.

Combustion takes place within a bubbling fluidised bed of sand or crushed refractory material, where an upward stream of air maintains proper turbulence and promotes a significantly higher degree of complete combustion. This design offers several key benefits: greater fuel flexibility, minimised slagging and fouling, high efficiency, and significantly reduced emissions through in-bed limestone dosing for SOx control — eliminating the need for a separate FGD (Flue Gas Desulfurisation) system and resulting in lower capex and opex.

Technical Specifications

Capacity

Up to 100 TPH

Pressure

125 Kg/cm²

Temperature

540°C

USPs of the AFBC boilers

Fuel flexibility – Burns a wide range of fuels
Gas-tight design – Shop-welded membrane panels cut refractory use and leakage
Steam purity – Two-stage steam separator ensures turbine-quality steam, even under rapid load changes
Complete combustion – Dual-side overfire air minimises unburnt particles and CO emissions
Reliable bed design – Spaced evaporator tubes simplify maintenance and improve temperature control
Flexible feeding – Both overbed and underbed feed systems available
Erosion protection – Welded studs on in-bed and furnace wall surfaces prevent tube erosion