|
| MOQ: | 10 Set |
| Price: | USD50,000 to USD100,000 per set |
| Standard Packaging: | Sea worthy Packing for Export with iron frame |
| Delivery Period: | Within 80 days after getting the down payment or L/C |
| Payment Method: | L/C at sight, T/T |
| Supply Capacity: | 500 tons per month |
General Introduction: Air Preheater
The air preheater is a heat exchanger that uses the heat of flue gas at the tail of the boiler to heat the air needed for combustion. The air preheater can increase the air temperature and can intensify combustion. On the one hand, the air preheater makes the combustion stable and reduces the mechanical incomplete combustion loss and chemical incomplete combustion loss. On the other hand, the use of waste heat can improve the complete combustion of coal, reduce the amount of excess air, increase the temperature of the combustion chamber, and strengthen the heat transfer, so as to achieve the effect of full combustion and utilization of heat energy.
Working Principle
Taking the rotary air preheater as an example to illustrate the principle of air preheater, it will rotate slowly during operation, the flue gas will enter the flue gas side of the air preheater and then be discharged, and the heat carried in the flue gas will be absorbed by the heat sink in the air preheater, and then the air preheater rotates slowly, the heat sink moves to the air side, and then the heat is transferred to the air before entering the boiler.
The application of air preheater in boiler is mostly three-compartment type, with fire alarm system, gap adjustment system and frequency conversion control system. Air preheaters are easy to use, simple to operate, safe to operate, and can improve the heat exchange performance of the boiler system, so it is very commonly used in flue gas boiler systems.
Details
The main heat transfer component of tubular air preheater is thin-walled steel tube. The tubular air preheaters are mostly cubic. The steel tubes are arranged vertically and staggered with each other. Both ends are welded on the upper and lower tube sheets.The tubular air preheater is equipped with an intermediate tube sheet in the tube box. The flue gas passes through the preheater up and down the pipe, while the air passes through the preheater horizontally to complete heat transfer.
Tubular air preheater is widely used in power station boilers and industrial boilers because of its advantages of good sealing, high heat transfer efficiency, easy manufacturing and processing. The shortcomings of tubular air preheater are large volume, easy ash plugging of steel tube content, difficult cleaning and easy wear and tear at flue gas inlet.
Functions
Parameter
| Layout item | Horizontal layout | Vertical layout |
| Tube arrangement |
staggered arrangement / |
staggered arrangement / |
| Sealing of pipe and plate |
Packing heat- resistant material/ |
welding |
| Anti-wearing |
a,when gas scours external tube, welcoming smoke tubes have protective tile |
|
Enamel air preheater products are classified as following by application
1.Enamel heat exchanger designed for denitration renovation projects
2.Enamel heat exchanger for circulating fluidized bed boiler and pulverized coal boilers Heat
exchanger parts for garbage incinerators and biomass boilers
3.Heat exchanger parts for grate furnaces, like chain grate furnaces4.Heat exchanger parts for gas-fueled boilers, such as kerosene boilers, coke ovens, etc.
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|
| MOQ: | 10 Set |
| Price: | USD50,000 to USD100,000 per set |
| Standard Packaging: | Sea worthy Packing for Export with iron frame |
| Delivery Period: | Within 80 days after getting the down payment or L/C |
| Payment Method: | L/C at sight, T/T |
| Supply Capacity: | 500 tons per month |
General Introduction: Air Preheater
The air preheater is a heat exchanger that uses the heat of flue gas at the tail of the boiler to heat the air needed for combustion. The air preheater can increase the air temperature and can intensify combustion. On the one hand, the air preheater makes the combustion stable and reduces the mechanical incomplete combustion loss and chemical incomplete combustion loss. On the other hand, the use of waste heat can improve the complete combustion of coal, reduce the amount of excess air, increase the temperature of the combustion chamber, and strengthen the heat transfer, so as to achieve the effect of full combustion and utilization of heat energy.
Working Principle
Taking the rotary air preheater as an example to illustrate the principle of air preheater, it will rotate slowly during operation, the flue gas will enter the flue gas side of the air preheater and then be discharged, and the heat carried in the flue gas will be absorbed by the heat sink in the air preheater, and then the air preheater rotates slowly, the heat sink moves to the air side, and then the heat is transferred to the air before entering the boiler.
The application of air preheater in boiler is mostly three-compartment type, with fire alarm system, gap adjustment system and frequency conversion control system. Air preheaters are easy to use, simple to operate, safe to operate, and can improve the heat exchange performance of the boiler system, so it is very commonly used in flue gas boiler systems.
Details
The main heat transfer component of tubular air preheater is thin-walled steel tube. The tubular air preheaters are mostly cubic. The steel tubes are arranged vertically and staggered with each other. Both ends are welded on the upper and lower tube sheets.The tubular air preheater is equipped with an intermediate tube sheet in the tube box. The flue gas passes through the preheater up and down the pipe, while the air passes through the preheater horizontally to complete heat transfer.
Tubular air preheater is widely used in power station boilers and industrial boilers because of its advantages of good sealing, high heat transfer efficiency, easy manufacturing and processing. The shortcomings of tubular air preheater are large volume, easy ash plugging of steel tube content, difficult cleaning and easy wear and tear at flue gas inlet.
Functions
Parameter
| Layout item | Horizontal layout | Vertical layout |
| Tube arrangement |
staggered arrangement / |
staggered arrangement / |
| Sealing of pipe and plate |
Packing heat- resistant material/ |
welding |
| Anti-wearing |
a,when gas scours external tube, welcoming smoke tubes have protective tile |
|
Enamel air preheater products are classified as following by application
1.Enamel heat exchanger designed for denitration renovation projects
2.Enamel heat exchanger for circulating fluidized bed boiler and pulverized coal boilers Heat
exchanger parts for garbage incinerators and biomass boilers
3.Heat exchanger parts for grate furnaces, like chain grate furnaces4.Heat exchanger parts for gas-fueled boilers, such as kerosene boilers, coke ovens, etc.
