Recover up to 15% of lost fuel by capturing flue gas heat recovery from your boiler or furnace
The waste heat use efficiency of coal-fired, oil-fired, and gas-fired boilers is about 70%. Among the wasted heat, flue gas heat accounts for the vast majority. The Shenzhen Hylita flue gas waste heat recovery device is used to recover this part of the heat, which can increase the boiler inlet water temperature, blast air inlet temperature, or directly generate steam for production and domestic use. By recycling waste heat, user costs can be greatly reduced. The transformation of the boiler is also very simple. Just install the flue gas waste heat recovery device produced by Shenzhen Hylita Company in the boiler exhaust flue without changing the original equipment status. It has the advantages of safety, environmental protection, energy saving, cost saving, etc.
Product Overview
Engineering Standards & Fabrication Quality
The flue gas heat recovery economizer is a high-efficiency heat exchange and energy-saving device with high-efficiency fins as heat transfer elements. It recovers the heat carried in flue gas, waste gas and wastewater through heat exchange to heat another medium (air, water or other media), thereby achieving the purpose of energy conservation and environmental protection. Flue gas heat recovery economizer is a common equipment for coal-fired, gas-fired and oil-fired boilers. It is installed at the outlet of flue gas, waste gas and waste water. It is used to recover the waste heat of flue gas, waste gas and waste water to heat domestic water or boiler water. It can also be used to heat air. The hot air can be used for boiler combustion, material drying and other scenarios. By lowering the temperature of high-temperature flue gas, wastewater, etc. discharged from the exhaust to working condition requirements in the economizer, the boiler operating efficiency can be improved by about 5%–10%.
Application & Tech Params
Some application areas :
- Boiler feed water or combustion air heating .
- Process or heating water preparation.
- Additional energy recovery in cogeneration chimneys.
- Energy recovery in ship engine chimneys.
- Energy recovery in industrial furnace chimneys
Technical Specifications：
- Media: Steam, Oil, Water, Glycol .
- Tube: Carbon Steel / Stainless 316L
- Fin: Aluminum / Copper / Steel
- Test Pressure: 3.0 MPa
- Max Temperature: 800°C
- Frame: 3mm-5mm Galvanized Steel
- Connection: Flange or Threaded
MATERIAL and TECHNICAL PARAMETERS
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Performance Specifications
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● Heat Transfer Area: 5–500 m²(customizable) ● Max Steam Pressure: 0.5–4.0 MPa (72–580 psi)
● Steam Temperature: 100–500°C(212–932°F)
● Airflow Capacity: 500–50,000 m³/h
● Thermal Efficiency: over 95%
● Pressure Drop (Air): 50–300 Pa
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Heat Plates/Tubes
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● Material:：Copper, CuNi, Stainless steel, Aluminium, carbon steel, Titanium(customizable)
● Best For: Corrosive/High-Temp Steam |
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Airside Fins
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● Material:：Aluminum, Corten Steel(customizable)
● Best For: Dusty/Acidic Airflows |
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Gaskets/Seals
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● Material: EPDM, PTFE, Graphite ● Best For: Steam Leak Prevention
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Frame/Casing
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● Material: Carbon Steel (Painted),SS304 ● Best For: Structural Durability
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Testing
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Heat exchangers are supplied clean and tested at a pressure of 30 bars
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Customization Options
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● Explosion-Proof Design(ATEX/IECEx certified) ● Self-Cleaning Mechanisms(For dusty air applications)
● Hybrid MVR(Mechanical Vapor Recompression) Integration
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ADVANTAGES OF Flue Gas heat recovery economizer
ADVANTAGES
Every time the flue gas temperature decreases by about 21°C, 1% of fuel can be saved.
When using a condensing economizer, operating efficiency exceeding 100% can be achieved by utilizing the high calorific value of the fuel.
Heating the boiler feed water can avoid thermal shock to the boiler, extend the service life of the boiler, and save energy.
Fuel consumption is reduced and emissions of pollutants into the atmosphere are reduced.
The same degree of heat recovery is achieved by heating the combustion air.
Why Choose hylita Flue Gas heat recovery economizer?
Energy saving: The heat in the flue gas between 200°C and 400°C can be recovered for heating water, and fuel consumption can be reduced by up to 15%.
Corrosion resistance: ND steel or SS316L material options are available, which can resist acid dew point corrosion caused by corrosive flue gases such as sulfur.
High efficiency: Compared with plain tubes, the fin tube design increases the heat exchange area by 300%.
High temperature resistance: can withstand exhaust gas temperatures up to 800°C, suitable for all types of furnace equipment
Welding process: high-frequency welding achieves 99% bonding rate between fins and tube walls, ensuring durability and thermal conductivity.
Solid structure: heavy-duty shell can withstand vibration and high-speed exhaust impact during operation of industrial boilers
Easy to clean: equipped with soot blower interface; H-shaped fin design can reduce dust accumulation
Anti-leakage: press 100% hydraulic pressure test at 1.5 times the design pressure to ensure no leakage
Customized adaptation: can be customized according to the size of the existing boiler flue, with minimal installation and modification work
Dual-function design: can be customized as gas-gas type (preheating air) or gas-water type (preparing hot water) equipment
1-year warranty: 12-month welding quality and thermal performance warranty is provided from the date of operation
Industry-Specific Solutions
We tailor thermal solutions to your exact application.
Waste heat recovery heat exchanger
Waste heat recovery heat exchanger The working principle of the waste heat recovery heat exchanger is to transfer the heat in high-temperature exhaust gas or waste heat flow to working fluids such as water and steam. These working fluids can then be used to generate additional power or heat, thereby reducing energy consumption and improving energy efficiency.
Air compressor waste heat recovery system
The air compressor waste heat recovery system is designed to capture and utilize the waste heat generated during the operation of the air compressor. Rather than losing this heat to the surrounding environment, the system recycles it for use in a variety of heating applications.
Gas generator flue gas heat exchanger
The gas generator flue gas heat exchanger is a component of the waste heat recovery system and is used to capture and utilize the waste heat in the exhaust gas of the gas generator. It is designed specifically for gas generators, which are typically powered by natural gas or other gaseous fuels.
Flue gas waste heat recovery
Flue gas waste heat recovery mainly converts the energy carried by the flue gas into usable heat through specific heat exchange methods. It has the characteristics of long service life, good energy saving effect, and short investment recovery period.
Flue gas air heater
Flue gas air heater is a heating device that converts the heat carried by the flue gas into usable heat energy through heat exchange. It is usually installed in the boiler flue or smoke pipe to recover the waste heat in the flue gas and heat the air.
Air heating unit
The air heating unit can heat recirculated air, external air or mixed air. It is used for heating industrial and agricultural buildings, and can also be used for building heating and ventilation systems.
Economizer heat exchanger
Economizer heat exchanger is used to recover waste heat from gas turbines, engines and industrial furnaces. Our design can recover up to 25% of the heat energy from exhaust gases at temperatures above 500 degrees Celsius and convert it into steam or hot water, significantly reducing the plant's fuel costs.
Customer Case Photos
Country: Singapore
Application: Marine Diesel Exhaust Heat Recovery
Material: Tube - Stainless Steel 304; Fin - Aluminum (with hydrophilic coating)
Supply Power: 230V / 1P / 50Hz
Country: India
Application: Hot Blast Stove Flue Gas Heat Recovery
Material: Tube & Fin - Corten Steel (ND Steel)
Supply Power: 415V / 3P / 50Hz
Country: Germany
Application: Chemical Process Gas Cooling & Steam Generation
Material: Tube - Stainless Steel 316L; Fin - 316L
Supply Power: 400V / 3P / 50Hz
Country: Bangladesh
Application: Textile Tenter Frame Exhaust Heat Recovery
Material: Tube - Carbon Steel (galvanized); Fin - Aluminum
Supply Power: 400V / 3P / 50Hz
Country: USA
Application: Food Sterilization Flash Steam Recovery
Material: Tube - Copper; Fin - Copper
Supply Power: 480V / 3P / 60Hz
Country: Poland
Application: Gas Boiler Flue Gas Condensing Heat Recovery
Material: Tube - Stainless Steel 316L; Fin - Aluminum (with epoxy coating)
Supply Power: 400V / 3P / 50Hz
who choose us?
Shenzhen Hylita Heat Exchanger Co., Ltd.
We supply a comprehensive portfolio of heat exchangers serving the industrial, food & beverage, HVAC, marine, air handling and
cooling, petrochemical, power generation, and refrigeration sectors.
heat recovery units(Boiler Economizers) are available in both direct-replacement models (100% compatible with OEM specifications) and fully customized configurations engineered to meet specific application requirements.
Packing & Delivery
Standard packaging is wooden crates.
For exports to European countries, the wooden crates undergo fumigation treatment.
If container space is limited, we can switch to PE film packaging or accommodate special packaging requests from customers.
Not sure which exchanger you need?
Our expert team can analyse your process and recommend the best solution.
FAQ
A: Yes, we highly encourage it! Trade Assurance secures your payment 100%. Combined with our 10-year manufacturing history, you can place your first order with total confidence.
2. Quality Control
Q: How do you ensure the quality before shipment?
A: Our reputation is built on 4 core quality pillars
✅ Experience : Specialized manufacturer since 2015 (10+ Years).
✅ Certifications: ISO 9001:2015, CE, ROHS
✅ Assurance : 100% pressure testing on every unit before shipment
✅ Global Trust : Successfully serving clients in over 50+ countries.
3. Design & Calculation
Q: No drawing? Can you design for me?
A: Yes! We use HTRI software for precise sizing. Just share your operating data (Temp/Flow), and we will provide a professional design for your approval.
4. Minimum Order Quantity (MOQ)
Q: What is the MOQ? Can I place small order please ?
A: Small order is also welcome in our company.
5. Warranty Service
Q: How long is the warranty coverage?
A: We offer flexible warranty options to match your needs:
✅ Standard: 12-Month for all orders.
✅ Extended: Up to 24-Month for eligible customized orders (confirm with our team).
6. Customization
Q: Do you support OEM/ODM and custom branding?
A: Yes, full customization available. We support custom materials (Copper, SS304/316, Cu-Ni) and offer Laser Marking & Nameplates to feature your logo perfectly.
7. Service Commitment
Q: How do you keep me updated on my order?
A: We ensure 100% Process Transparency
✅ Double Confirmation: All specs verified before production starts..
✅ Visual Updates: We send photos/videos of the manufacturing progress.
✅ Document Review: Draft documents (B/L, Invoice) sent for your approval before final issuance to avoid errors.
8. Main Products
Q: What are your main products ?
A: We mainly produce air heat exchangers, surface coolers, evaporator coils, condenser coil, shell and tube heat exchangers, plate heat exchangers and other heat exchange equipment and all kind of finned tubes, heat exchange accessories, etc.
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