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SGS Tubular Economizer And Air Preheater In Steam Power Plant

SGS Tubular Economizer And Air Preheater In Steam Power Plant

SGS Tubular Economizer And Air Preheater In Steam Power Plant
SGS Tubular Economizer And Air Preheater In Steam Power Plant
SGS Tubular Economizer And Air Preheater In Steam Power Plant
Product Details:
Place of Origin: China
Brand Name: HD Boiler
Certification: ASME, SGS, ISO9001, TUV, GRADE A, EN
Model Number: HDBBAP0118
Payment & Shipping Terms:
Minimum Order Quantity: 1 Set
Price: USD40,0000 to USD60,0000 per set
Packaging Details: Sea worthy Packing for Export with iron frame
Delivery Time: Within 120 days after getting the down payment or L/C
Payment Terms: L/C at sight, T/T, Western Union, MoneyGram
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Detailed Product Description
Type: Tubular Application: Power Station And Industrial Use
Material: Carbon Steel, Stainless Steel, ND Steel And Alloy Steel Advantage: Good Sealing, High Heat Transfer Efficiency, High Safety
High Light:

economizer and air preheater


air preheater in steam power plant


tubular economizer and air preheater

Eco-Friendly High Efficient Boiler Air Preheater for Industrial Use Made In China


General Introduction

Air preheater, or boiler preheater, is an important boiler part. It can be divided into two kinds, Tubular type air preheater and Vertical type air preheater.
Air preheater pipe type, mainly using industrial furnaces or smoke waste heat boiler combustion air preheating furnace enter, such not only improves the thermal efficiency of the stove and reduce the environment pollution.

Take the rotary type as a example to illustrate the working principles of air preheaters, when under operation, it would be slowly rotating, and exhaust gas will enter the gas flue side of air preheater, and then be dicharged. The heat carried by the gas flue will be absorbed by the cooling ribs of the air preheater, then the air preheater will be rotating slowly, the cooling ribs work to the side of the air, delivering the heat to the air before the air enters the boiler.

The air preheaters applied in boilers are mostly three warehouses type with fire alarm system, internal adjustment system and frequency conversion control system. It is convenient to use air preheaters with easy operation and safe running, meanwhile it can improve the performance of heat transferring of the bouler system, thus it is very common to apply air preheaters in the system of boiler gas flue.




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.




1. Improve and enhance combusion
The air through the air preheater enters the boiler inside, and speed up the fuel processes of drying, ignition and combusion, and makes sure the stable combusion inside the bouler, and improve the combusion effieciency.
2.Enforce heat tranfer
Due to the improvement and enforcement of combusion in the boiler, as well as the increase of hot wind temperature when entering the boiler, the average temperature inside is increased, too. This can enforce the radiation heat transferrring in the boiler.
3.Reduce the boiler loss, decrease the exhaust gas temperature and improve the thermal efficiency of the boiler.
Because the combusion inside is stable, and the radiation heat transferring is enhanced, it can reduce the loss caused by chemical incomplete combusion. On the other hand, the air preheater take the advantage of gas flue heat to further reduce the exhaust loss, which thus improves the thermal efficiency. According to experience, when the air tempeature inside the air preheater is increased by 1.5 degrees, the temperature of gas flue can be decreased by 1 degree. If installed, the air preheater can preheat the air by 150-160 degrees, then can reduce the temperature of gas flue by 110-120 degrees, and increase the thermal efficiency by 7-7.5% as well as save fuel by 11-12%.
4.the heat air can be the fuel desiccant.
For layer-burning boilers, it is okay to use fuel whose miosture and ash content is high when preheated air is available. For power station boilers, hot air is an important desiccant for fat power system and medium to convey coal powder.

SGS Tubular Economizer And Air Preheater In Steam Power Plant 0


Layout item
Horizontal layout Vertical layout
Tube arrangement

staggered arrangement /
in-line arrangement

staggered arrangement /
in-line arrangement

Sealing of pipe and plate

Packing heat- resistant material/


a,when gas scours external tube, welcoming smoke tubes have protective tile
b,when gas scours inside tube,wear casing pipes are installed in gas inlet.

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.


SGS Tubular Economizer And Air Preheater In Steam Power Plant 1SGS Tubular Economizer And Air Preheater In Steam Power Plant 2

Contact Details
Zhangjiagang HuaDong Boiler Co., Ltd.

Contact Person: Miss. Sandy Chen

Fax: 86- 512-58774453

Send your inquiry directly to us (0 / 3000)


Address: Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China

Factory Address:Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China