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Waste Gas Recovery Equipment Heat Recovery Heat Exchanger
Industrial waste heat recovery includes: flue gas waste heat recovery, cooling medium waste heat recovery, waste steam waste heat recovery, chemical reaction waste heat recovery, high temperature product and slag waste heat recovery, and combustible waste gas waste heat recovery. According to the characteristics of energy transfer or transformation in the process of waste heat utilization, the current domestic industrial waste heat recovery technology can be divided into heat exchange technology
Waste Gas Recovery Equipment Heat Recovery Heat Exchanger
Principle of Waste Heat Recovery and Utilization Device
Waste heat recovery economizer is a high-efficiency heat exchange and energy-saving device that uses high-efficiency fins as heat transfer elements. It recovers the heat carried by flue gas, waste gas, and waste water through heat exchange, and heats another medium (air, water, or others) to achieve The purpose of energy saving and environmental protection. Waste heat recovery economizer is a common equipment for coal-fired, gas-fired and oil-fired boilers. It is installed at the flue gas outlet to recover the waste heat of flue gas to heat domestic water or boiler water, and can also heat air. The hot air can be used for boiler combustion and drying materials.
Flue Gas Waste Heat Recovery Device
Flue gas is the main way for general energy-consuming equipment to waste energy. For example, the energy consumption of boiler smoke exhaust is about 15%, while other equipment such as setting machines, dryers and kilns in the printing and dyeing industry mainly consume energy through flue gas discharge. . Flue gas waste heat recovery is mainly to convert the heat carried by the flue gas into usable heat through a certain heat exchange method.
The Way of Flue Gas Waste Heat Recovery
1. Waste heat recovery device (air-water)
The waste heat recovery device is a special equipment for coal-fired, oil-fired and gas-fired boilers. It is installed at the smoke port of the boiler to recover the waste heat of the flue gas to heat domestic water or make up water for the boiler. When working, the flue gas flows through the flue of the waste heat return device to scour the heat exchange tube, and the heat of the flue gas will be transferred to the water in the heat exchange tube, thereby increasing the water temperature. In order to prevent dust blocking and corrosion, the waste heat recovery device is generally made of stainless steel. After installing the flue gas waste heat recovery device, the boiler saves fuel by 4-18%.
2. Waste heat recovery device (gas-gas)
The waste heat recovery device is a special equipment for fuel oil, coal and gas boilers. It is installed in the boiler smoke port or flue, and heats the air after recovering the waste heat of the flue gas. The hot air can be used for boiler combustion and drying materials. The flue gas goes inside the pipe, and the fresh air goes outside the pipe. When working, the high-temperature flue gas passes from one side of the tube to the other side, and the fresh air washes the heat exchange tube. At this time, the heat of the flue gas will be transferred to the fresh air through the heat exchange tube, and the exothermic temperature of the flue gas will drop. Cold air heats up from heat absorption.
Features of Heat Recovery Heat Exchange Machine
1. Easy installation: The installation of the waste heat recovery device does not require modification of the original boiler or industrial kiln.
2. Safe and reliable: the waste heat recovery device has good temperature resistance, and the ventilation resistance is small during heat conduction.
Always maintain good heat transfer efficiency without affecting the work of the boiler or kiln.
3. Long service life: the service life of the waste heat recovery device is more than 5 years, and the stainless steel is made to reduce the influence of flue gas corrosion.
4. Good energy-saving benefits: the efficiency of large-scale industrial kilns can be increased by more than 10%, and the efficiency of small and medium-sized oil, gas, and coal-fired boilers can be increased by 5%-10%.
5. Short payback period: Generally, all investment can be recovered within 3 to 8 months.
Specification
Pipe diameter | Tube Materials | Pitch spacing | Row spacing | Fin materials | Sheet spacing |
Φ9.52 | Copper pipe Internal thread pipe White nickel copper pipe Aluminum pipe Stainless steel pipe (304, 316L) | 25.4mm 25mm | 22mm 21.65mm | Bare aluminum foil Hydrophilic aluminum foil Epoxy anticorrosive aluminum foil Copper foil | 1.5-12mm |
Φ12.7 | Copper pipe Internal thread pipe White nickel copper pipe Aluminum pipe Stainless steel pipe (304, 316L)
| 31.75mm | 27.5mm | Bare aluminum foil Hydrophilic aluminum foil Epoxy anticorrosive aluminum foil Copper foil
| 2.0-8.0mm |
Φ15.88 Φ16 | Copper pipe White nickel copper pipe Aluminum pipe Stainless steel pipe (304,316L)
| 38.1mm
| 33mm | Bare aluminum foil Hydrophilic aluminum foil Epoxy anticorrosive aluminum foil Copper foil Stainless steel sheet
| 2.0-14mm |
Φ25 | Copper pipe Plain pipe Stainless steel pipe (304,316L)
| 60mm | 59.5mm | Bare aluminum foil Hydrophilic aluminum foil Epoxy anticorrosive aluminum foil Copper foil Stainless steel sheet
| 2.0-8.0mm |
100% Test Before Shipment
All heat exchange equipment should be tested according to customers' requirements before shipment to ensure it withstand pressure and does not leak.
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