MAGO THERMAL RDF Fired steam boiler up to 80 TPH, 67 KSC, 475 Deg C design is based on advanced combustion and thermal energy recovery technologies tailored for burning Refuse-Derived Fuel (RDF). The design focuses on maximizing efficiency while maintaining strict environmental and operational standards. Here’s an overview of the key design aspects:
Combustion System
- Combustion Technology: MAGO THERMAL RDF boilers often employ advance Reciprocating grate or fluidized bed combustion system or Dual Combustor, which ensures complete combustion of the RDF, even with variable fuel characteristics. The combustor allows for the proper mixing of fuel and air, optimizing the burn process. It is also compatible burning RDF with other fuel combinations.
- Fuel Flexibility: The design is capable of burning a wide variety of waste materials, ensuring that heterogeneous RDF fuels can be utilized efficiently.
- Secondary Air Injection: The use of secondary and tertiary air systems improves combustion by ensuring thorough mixing and reducing the formation of harmful emissions, particularly nitrogen oxides (NOx).
Steam Generation and Heat Recovery
- Water-Tube Design: MagoThermal RDF boilers typically use a water-tube design, where water circulates in tubes heated by the combustion of RDF. This allows for efficient heat transfer and high-pressure steam generation.
- Superheaters: The boiler is equipped with superheater sections to raise the temperature of the steam to optimal levels for power generation or industrial use.
Mago Thermal RDF steam boilers are designed to operate in harsh environments, given the variable and often corrosive nature of Refuse-Derived Fuel (RDF). The superheater section of the boiler, which raises the temperature of the steam beyond its saturation point, is particularly vulnerable to corrosion, erosion, and fouling due to the high temperatures and the presence of aggressive compounds like chlorine and sulfur in RDF.
To combat these challenges, Mago Thermal typically uses materials with high resistance to both high-temperature corrosion and mechanical wear in the superheater sections. Common materials used in the construction of superheaters for RDF boilers include:
High-Grade Alloys
- Superalloys:
- Austenitic Stainless Steels
- Corrosion-Resistant Alloys (CRA)
- Cladding and Coatings
- Advanced Material Selections for Chlorine-Resistant Applications
Heat Recovery Systems: Economizers and air preheaters are integrated into the design to recover heat from the flue gases, improving the overall efficiency of the steam cycle.
Emission Control and Environmental Compliance
- Flue Gas Cleaning: The design includes sophisticated flue gas cleaning systems, such as bag filters, electrostatic precipitators (ESPs), or scrubbers, to remove particulate matter, sulfur oxides (SOx), and nitrogen oxides (NOx).
- Selective Non-Catalytic Reduction (SNCR) or Selective Catalytic Reduction (SCR): For further reduction of NOx emissions, the boilers may be equipped with SNCR or SCR systems.
- Low Emission Combustion: The optimized combustion system reduces the production of pollutants at the source, lowering the environmental impact of the boiler.
Ash Handling
- Bottom and Fly Ash Systems: The boiler design includes ash handling systems to collect both bottom ash (heavier, non-combustible materials) and fly ash (finer particles carried in the flue gases). Ash is either removed automatically or reused in other processes, depending on the system configuration.
Control and Automation
- Advanced Automation Systems: Distributed control system (DCS) allows for real-time monitoring and precise control of the boiler operations. The automation includes fuel feeding, combustion control, steam pressure regulation, and emissions monitoring, optimizing both efficiency and safety.
Corrosion-Resistant Materials
- High Durability: The boiler design includes the use of corrosion-resistant materials and coatings in areas exposed to high temperatures and the aggressive components present in RDF. This ensures a longer operational lifespan and reduced maintenance costs.
Modular Design
- Scalability: The modular design of MagoThermal RDF steam boilers allows for flexible installation sizes, making it suitable for small industrial plants or large-scale energy generation facilities.
Energy Efficiency Enhancements
- Waste Heat Recovery: The design often includes features to capture waste heat from flue gases, which can be used to preheat combustion air or water, improving the overall thermal efficiency.
- High Steam Pressure and Temperature: Boilers are designed to operate at high steam pressures and temperatures, maximizing the amount of usable energy derived from RDF.
Mago Thermal RDF steam boiler design represents a reliable, energy-efficient solution for converting waste into valuable steam energy, helping industries reduce landfill waste and generate sustainable power.