Rotary Hearth Furnace Waste Heat Boiler

Working Principle: High-temperature flue gas (900-1100°C) from the rotary hearth furnace enters the waste heat boiler. Heat is transferred to water through heat exchange surfaces (water-cooled walls, evaporator, economizer), where the water is heated and evaporated to form steam (typically 1.6-3.8 MPa, 190-300°C). The cooled flue gas (approximately 180-200°C) is then discharged and enters the subsequent treatment system.
Product Advantages: 
Highly Efficient Waste Heat Recovery: For 900-1100°C flue gas, it recovers 30%+ of flue gas heat loss, producing high-quality steam at 1.6-8.0 MPa, improving energy utilization by 15-20%, with advanced solutions reaching 85%. The above.
Clear economic benefits: Investment payback period of 2-3 years; annual savings of approximately 15,000 tons of standard coal per unit; cost reduction of tens to millions of yuan; stable returns.
Outstanding environmental protection and emission reduction: 180 kg CO₂ is reduced per ton of steam, resulting in an annual emission reduction of over 2,800 tons (for a 50,000 Nm³/h flue gas system). It can also pre-remove some dust, reducing the load on subsequent treatment processes.
Suitable for harsh operating conditions: Resistant to high dust and corrosion, resistant to temperature fluctuations, forced circulation + multiple safety monitoring systems ensure over 8,000 hours of operation per year.
Flexible and adaptable structure: Supports horizontal/vertical layouts, customizable full boiler/two-stage modes, adaptable to rotary hearth furnaces of different scales in various fields.
Strong system synergy: Steam can be directly supplied to the pipeline network or used for power generation; waste heat from flue gas can be reused for preheating and drying, optimizing the production process.

Main Application Areas
Iron and Steel Metallurgy: Treatment of solid waste containing iron dust and sludge, recovery of valuable metals such as zinc
Non-ferrous Metallurgy: Processing of laterite nickel ore, direct reduced iron production
Solid Waste Treatment: Zinc removal from metallurgical dust and sludge, waste heat recovery from municipal solid waste incineration