In the field of industrial energy conservation and resource recycling, flue gas waste heat recovery devices, with their efficient capture and conversion of high-temperature flue gas waste heat, have become key equipment for reducing energy consumption and improving efficiency. Custom-designed flue gas waste heat recovery devices for specific operating conditions can maximize the utilization of waste heat resources by precisely matching medium characteristics, temperature and pressure parameters, and installation requirements. This customized flue gas waste heat recovery device, supported by a rated thermal power of 280kW, perfectly adapts to the waste heat recovery needs of scenarios such as natural gas generator sets, demonstrating strong adaptability and practical value.
Scientific adaptation of the circulating medium is the foundation for stable operation of the device. This device uses softened water as the circulating medium, avoiding the potential for scale buildup and pipe blockage caused by ordinary water, ensuring long-term operational efficiency. In terms of pressure design, the device is precisely matched to operating conditions, with a circulating medium design pressure of 1.6MPa, which can easily cope with fluctuations in operating conditions, while the working pressure is controlled within a reasonable range of 0.6MPa, balancing operational safety and energy economy. Meanwhile, the inlet and outlet interfaces on the cylinder liner water side are consistent with those of the natural gas generator set's cylinder liner water pipeline, employing a flange interface design to ensure seamless connection with the main system.
Highly efficient flue gas waste heat capture capability is the core advantage of the unit. Tailor-made for high-temperature flue gas conditions, the unit can adapt to flue gas inlet temperatures ≥530℃, while the flue gas outlet temperature remains stable at ≥120℃ after heat exchange. This avoids damage to the equipment from low-temperature corrosion and achieves highly efficient waste heat extraction. Combined with a flue gas flow rate of approximately 5670 Nm³/h, the unit can fully contact the high-temperature flue gas, ensuring sufficient heat exchange. With a rated thermal power of 280 kW, it can stably output recovered heat, providing strong support for subsequent energy reuse.
A precise temperature and flow control system enhances the accuracy of waste heat utilization. On the circulating medium side, the device is designed with a reasonable temperature difference between the inlet water temperature of 50℃ and the outlet water temperature of 60℃. This ensures efficient absorption of waste heat from the flue gas while matching the temperature requirements of subsequent energy-consuming equipment. The rated flow rate of the circulating medium at 25 m³/h ensures the continuity and stability of heat transfer. This precise parameter matching prevents insufficient heat exchange due to insufficient flow rate or energy waste due to excessive flow rate during waste heat recovery.
The user-friendly interface and size design enhances the ease of installation and transportation. The water-side inlet and outlet use DN100 flange interfaces, while the flue gas-side inlet and outlet use DN250 flange interfaces. This standardized flange design facilitates installation, disassembly, maintenance, and repair, reducing on-site construction difficulty. Furthermore, the external dimensions strictly adhere to long-distance road transport requirements, allowing for cross-regional transportation without additional disassembly. This significantly reduces transportation costs and construction time, ensuring rapid commissioning of the device.