ECONOMIZER
An Economizer is a heat recovery device installed in the boiler flue gas path to preheat the feedwater before it enters the boiler drum or steam generator. By capturing residual heat from exhaust gases, the economizer significantly enhances the thermal efficiency of the boiler and reduces fuel consumption. It plays a critical role in energy conservation and operational cost reduction in industrial steam generation systems.
PP Boilers
manufactures high-performance finned-tube
and bare-tube
economizers, designed for optimum heat transfer, low-pressure drop, and long
service life.
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
- Waste Heat Recovery: Utilizes the thermal energy of flue gases to raise feedwater temperature
- Fuel Efficiency Improvement: Reduces the temperature gap between feedwater and steam, minimizing required combustion heat
- Boiler Efficiency Boost: Enhances overall boiler efficiency by 3% to 7%
- Steam Generation Support: Provides consistent thermal input for better boiler performance during load variations
Technical Specifications:
- Heat Recovery Efficiency: Up to 75% of flue gas heat below saturation temperature
- Design Pressure: Up to 100 kg/cm² (IBR-compliant)
- Temperature Handling: Flue gas inlet up to 400°C; feedwater outlet up to 250°C
- Material of Construction: Carbon steel, alloy steel, or stainless steel (for high-pressure/temperature operations)
- Tube Types: Bare or spiral-finned tubes
- Mounting Configuration: Horizontal or vertical flue gas path
- Applications Range: Boilers from 1 TPH to 150+ TPH
Silent Features
- Fuel Savings: Reduces fuel input by 4–10% depending on operating conditions
- Extended Boiler Life: Lowers thermal shock by delivering warmer feedwater
- Compact Design: Space-efficient heat exchange system with modular construction
- Corrosion-Resistant Tubes: Designed for sulfur-laden or acidic flue gases
- Soot Blowing Arrangement: Available with manual or automated soot blowers to maintain heat transfer efficiency
- Ease of Maintenance: Detachable casing and accessible tube banks for cleaning
- Custom Engineered: Designed based on flue gas velocity, pressure drop limits, and steam demand
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.