AIR PRE-HEATER (APH)
An Air Preheater is a critical heat recovery component in boiler systems, designed to improve thermal efficiency by preheating the combustion air using residual heat from flue gases. By increasing the temperature of incoming air before it enters the furnace, the APH reduces fuel consumption, enhances combustion efficiency, and lowers flue gas temperature—resulting in significant energy savings and improved boiler performance.
Compliance
IBR-certified and ISO 9001:2015 compliant
Pressure Parts
Operating pressure up to 120 kg/cm²
Fans (FD, ID, PA)
Flow rates up to 500,000 m³/hr
Temperature
Up to 540°C (for superheater coils)
Key Points
PP Boilers provides tubular air preheaters, custom-engineered to meet the thermal and mechanical demands of various industrial boilers.
- Heat Recovery: Transfers residual heat from boiler flue gases to combustion air
- Improved Combustion: Raises air temperature, enabling more efficient and complete fuel burning
- Fuel Savings: Reduces fuel input required for maintaining desired steam output
- Emission Reduction: Lowers unburned carbon and reduces flue gas temperature for downstream equipment protection
Technical Specifications
- Types Available: Tubular (static) design with air flowing inside the tubes and flue gas outside — or vice versa, as per system requirement.
- Heat Recovery Efficiency: Up to 30% of waste heat recovery
- Temperature Handling: Air outlet up to 200–250°C
- Design Pressure: Atmospheric (non-pressurized) or as per FD & ID fans.
- Material of Construction: Carbon steel and stainless steel.
- Sizes Available: Custom-designed for boilers ranging from 1 TPH to 100+ TPH
- Orientation: Horizontal or vertical based on layout and draft system
Silent Features
- Thermal Efficiency Booster: Improves overall boiler efficiency by 5–10%
- Fuel Versatility: Compatible with coal, biomass, RDF, and oil/gas-fired boilers
- Modular Construction: Facilitates transport, quick installation, and maintenance
- Corrosion-Resistant Design: Optional internal coating for high-sulfur fuel operation
- Low Pressure Drop: Optimized surface geometry for minimum airflow resistance
- Cleaning Provisions: Equipped with soot blowers or manual access for maintenance
- Customization Ready: Configurable for FD, PA, or SA air circuits
Advantages
- Significant reduction in air pollutants.
- Improved compliance with local and international regulations.
- Enhanced operational efficiency through optimized processes.
- Long-term cost savings by reducing fines and penalties.
- Increased public trust and corporate reputation.
- Customizable solutions for specific industrial applications.
- Low maintenance requirements for certain systems.
- Potential for energy recovery in some designs.
- Contribution to a healthier work environment.
- Support for sustainable development initiatives.
Applications
- Power generation plants.
- Cement manufacturing.
- Chemical processing.
- Metal production and processing.
- Food and beverage industry.
- Pharmaceutical manufacturing.
- Waste incineration facilities.
- Mining and mineral processing.
- Pulp and paper industry.
- Textile manufacturing.