Flue Gas Heat Exchanger
Flue gas heat exchangers convert heat from waste gas into energy.
Flue gas heat exchangers are a key component of industrial energy conservation, capturing heat from high-temperature exhaust gases emitted by boilers and kilns to heat water, air, or generate steam. This significantly reduces fuel costs and thermal pollution, making them crucial equipment for achieving green production.
Datang has nearly 20 years of experience in using heat exchangers to recover heat from flue gas.
Flue Gas Heat Exchanger Manufacturer China Factory
What is a flue gas heat exchanger?
Flue gas heat exchangers convert heat from waste gas into energy.
Flue gas heat exchangers are a key component of industrial energy conservation, capturing heat from high-temperature exhaust gases emitted by boilers and kilns to heat water, air, or generate steam. This significantly reduces fuel costs and thermal pollution, making them crucial equipment for achieving green production.Datang has nearly 20 years of experience in using heat exchangers to recover heat from flue gas.
Datang offers a variety of flue gas heat exchangers, including shell-and-tube heat exchangers, rotary heat exchangers, Fin Tubular heat exchangers, and heat pipe heat exchangers.
Flue Gas Heat Exchanger Applications:
Power Industry: Recovers waste heat from boiler exhaust, preheats combustion air to improve combustion efficiency, or is used for reheating flue gas in desulfurization systems.
Chemical and Metallurgical Industries: Treats high-temperature waste gas generated from reactions, recovering heat for drying, preheating raw materials, or generating steam, significantly reducing production costs.
Waste Incineration: Rapidly cools high-temperature flue gas (800℃+) to approximately 200℃, protecting subsequent dust removal equipment, while simultaneously generating steam for power generation.
Residential Heating: In large shopping malls and hotels, recovers waste heat from air conditioning or boilers to heat domestic hot water, achieving energy recycling.
Types of Flue Gas Heat Exchangers
A shell-and-tube flue gas heat exchanger is a specialized industrial device designed to recover waste heat from high-temperature exhaust gases. the flue gas flows through the tubes, while the coolant (often water or air) circulates within the shell.
The Shell: A large pressure vessel that encloses the tube bundle.
The Tubes: Small-diameter pipes that carry the hot flue gas. To maximize heat transfer, these are often finned tubes, which increase the surface area in contact with the gas.
Structure: Composed of a series of corrugated metal plates, forming narrow flow channels where flue gas and the medium flow in opposite directions. Advantages: Extremely small size and extremely high heat transfer efficiency (30%-50% higher than tubular heat exchangers), suitable for applications with limited space or extremely high heat exchange efficiency requirements.
Applications: Commonly used in energy-saving retrofits of gas-fired boilers and deep recovery of waste heat from low-temperature flue gas.
The finned-tube flue gas heat exchanger serves as a core component in the industrial recovery of waste heat from flue gas and in flue gas cooling processes. By utilizing a composite structure comprising a base tube and fins—where the fin configuration significantly expands the heat exchange surface area—it efficiently transfers heat from high-temperature flue gas to a cold fluid. The presence of these fins not only increases the heat exchange area by a factor of 3 to 5 compared to bare tubes but also serves to reduce thermal resistance.
The Rotary Heat Exchanger (also known as a rotary heat recovery unit) is a highly efficient heat exchanger well-suited to modern requirements. Compared to conventional heat exchangers, stationary heat pipe heat exchangers demonstrate superior heat transfer performance and efficiency in thermal energy recovery applications. Furthermore, due to the rotation of its heat pipe bundle, the rotary heat pipe heat exchanger achieves a heat transfer efficiency 2 to 3 times higher than that of stationary heat pipe units; it effectively handles dust present in the gas stream, thereby enabling continuous and stable operation even when processing dust-laden waste gas.
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Flue Gas Heat Exchanger FAQs
A: The flue gas heat exchangers can be customized. We can produce it according to your drawings, and we can sign a confidentiality agreement for your patented products. For more information, please contact us.
A: Always a pre-production sample,before mass production;always final inspection before shipment.
Inspection & Guarantee Certificate is supplied with shipment, and the Third Party Inspection is available.
A: One year after shipping.
A: We have workshop can supply all parts of the finned tube radiator, and 90% of spare parts can be distributed to any
place in the world within one week!
A: We can arrange for experienced engineers to provide online video guidance on product installation and train your staff on equipment operation and maintenance.
A: We have many professional and technical personnel, more competitive prices and better after-dales service than other companies.
A: Datang has high frequency resistance welding finned tube production line 18, extruded finned tube equipment 30, laser welding finned tube production line 2, wound finned tube production line 12. The annual capacity can reach 100,000 tons, the specification φ 18-273mm finned tube, according to the customer requirements of the standard production, service has exceeded 3000+ enterprises.