High Efficient High Pressure Boiler Air Preheater Heat Exchanger Long Life Time

Product Information

Air pre-heater is a device used to improve the heat exchange performance of the boiler and reduce energy consumption. It is used by the flue gas in the boiler's tail flue to preheat the air before entering the boiler to the heating surface with a certain temperature through the internal heat sink.Air preheater is generally divided into three types: plate type, rotary type and tube type.Taking rotary type as an example, the working principle of air preheater is introduced.A large amount of unburned combustible materials will deposit on the heat transfer elements and may cause the air preheater to catch fire.Also introduced in detail the analysis and leakage air treatment.

Functions/Advantages

1. Improve and strengthen combustion
The air after the waste heat enters the furnace, accelerates the fuel drying, ignition and combustion process, ensures the stable combustion in the boiler, and improves the combustion efficiency.
2. Strengthen heat transfer
As the combustion in the furnace has been improved and strengthened, and the temperature of hot air entering the furnace has been increased, the average temperature level in the furnace has also been increased, so as to strengthen the radiation heat transfer in the furnace.
3. Reduce the loss in the furnace, reduce the smoke discharge temperature, and improve the boiler's thermal efficiency
Because the combustion in the furnace is stable and the radiation heat exchange is strengthened, the chemical incomplete combustion loss can be reduced.On the other hand, the air preheater makes use of the waste heat of flue gas to further reduce the loss of smoke exhaust, so as to improve the boiler's thermal efficiency.According to experience, when the air preheater in rise by 1.5 ℃, exhaust temperature can reduce 1 ℃. After installation of air preheater in boiler flue, if we can put the air heat 150-160 ℃, can reduce exhaust temperature 110-120 ℃, the boiler thermal efficiency can be increased by 7% - 7.5%.You can save 11 to 12 percent on fuel.
4. hot air can be used as fuel desiccant
For laminar combustion furnace, hot air can be used as fuel with high moisture and ash content. For power plant boiler, hot air is an important desiccant and coal powder conveying medium in the fat and powder system.

Parameter

Company Profile

"Hua Dong" boilers include Utility Boiler, HRSG Boiler, coal-fired , oil(gas) -fired, coal-water-slurry-fired and garbage-fired steam/hot water boilers, organic heat carrier boilers, etc., and Boiler spare parts (Economizer, Finned tube, Header, Steam drum, Superheater, Water wall panel, Air preheater, Cyclone separator, etc., which are widely used in power generation, heat supply, chemical engineering, textile, food, paper, road building, plastic, rubber and wood working industries. "HD" boilers are honored as "Famous Production in Jiangsu Province", " Jiangsu High-Tech Product" and "Jiangsu Energy-Saving Product". "HD" brand is a "Famous Brand in Jiangsu Province". We are a qualified supplier for the top three boiler manufacturers in China(Harbin Boiler Co., Ltd., Dong Fang Boiler Group Co., Ltd., Shanghai Boiler Works Ltd.,). So far, Hua Dong Boilers have served 10000 customers, which sell well all over China and are exported to USA, Australia, Russia, Kazakhstan, India, Indonesia, South Africa, Brazil, and Southeast Asia.