Covered linear storage pile and screw reclaimer

Biomass boilers

Globally recognized power generation technology

The challenge

Generating electricity using fossil fuel is the most popular method in the world. However, the costs for producing energy with traditional carbon-based fuels are increasing. In addition, there is a global decree for the reduction of greenhouse gases (GHG) and the dependence upon fossil fuels.

The solution

Biomass is readily available; lower priced, and can be sustainably grown. ANDRITZ innovative fluidized bed combustion technologies for generating power from biomass incorporate decades of experience and have been implemented in all areas of the pulp and paper industry as well as for utility or municipal power plants.

The combustion in a fluidized bed boiler is characterized by thorough mixing and intensive movement of fuel in a dense cloud of heated solid particles under controlled temperature conditions. This excellent mixing leads to improved heat and material transfer during combustion allowing various fuels to be fired simultaneously in the same boiler. ANDRITZ offers a wide range of fluidized bed technologies, distinguished by capacity, fuel and industrial application. EcoFluid bubbling fluidized bed (BFB) boilers represent an important part of ANDRITZ’s bioenergy solutions and are used for steam and power generation from biomass and different alternate fuels as sludges, RDF, and residues.

BFB EcoFluid boiler at E.ON Blackburn Meadows Renewable Energy Plant, UK

BFB EcoFluid boiler in Blackburn Meadows, UK

Benefits of the EcoFluid boiler

Fuel flexibility
- Handles large variations in fuel moisture
- Accommodates large particle size variations
High combustion and boiler efficiency
- Low unburned carbon loss
Low emissions
- Low CO
- Low NO_X with air staging (SNCR and SCR available)
- Low HCl and SO₂ with sorbent injection and bag filter if needed
Low maintenance costs
- Simple, reliable construction
- No moving parts inside furnace
High availability and long life
- Conservative design, effective soot blowing, high quality components

PowerFluid circulating fluidized bed (CFB) boilers are used for steam and power generation from conventional and renewable fuels (e.g. coal and biomass) and alternative fuels (biogenous residues, sludge, rejects, and refuse-derived wastes with high calorific value).

PowerFluid CFB boiler. Riikinvoima, Finland.

Benefits of the PowerFluid boiler

Highest fuel flexibility
- Multi-fuel combustion
- Wide range of heating values, fuel types, and properties
- Tolerant of fuel fluctuations and other disturbances
Almost complete combustion with lowest emissions
- Low CO, TOC emissions
- Low unburned carbon in ash
- Low SO_X with direct desulphurization by adding limestone
- Low NO_X with controlled temperature and air staging
High efficiency
- Low amount of excess air
- High burnout rate
Excellent load following capabilities and part load behavior
Reliable design, high availability, and long life

ANDRITZ fluidized bed technologies are characterized by unmatched fuel flexibility, the ability to employ a diversity of fuels, including fuels which are difficult to burn using other technologies, almost complete combustion with lowest emissions and high efficiency and availability.

Several decades of experience with fluidized bed technology and individual customer challenges have provided ANDRITZ with a strong track record of reference plants.

Biomass handling systems

Proven solutions for biomass processing

Power boilers

Technologies for producing steam and electricity from renewable fuels as well as for the efficient use of traditional fossil fuels.

Autonomous power boiler solution - Metris BOA

Metris BOA is the industrial internet of things (IIoT) web application for smart power boilers, which utilizes big data (B), to optimize (O) and analyze (A) the power plant processes and monitor the installed equipment.