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Carbon Steel Boiler Tubular Air Preheater To Improve Thermal Efficiency For Coal Fired Boilers
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Brand Name:HD Boiler
Model Number:Boiler Air Preheater
Certification:ASME, SGS, ISO9001
Delivery Time:40 Days
Company Data
Verified Supplier
Contact Person
Sandy Chen
Business Type:
Manufacturer Trading Company
Officials:
Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China
Quality:
Quality Certifitation Available
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Product Details
Company Profile
Product Details
Carbon Steel Boiler Tubular Air Preheater To Improve Thermal Efficiency For Coal Fired Boilers
Introduction
Air preheater is a kind of equipment which can improve the heat
exchange performance of the boiler and reduce the energy
consumption. The function of the air preheater is to heat the flue
gas discharged from the tail flue of the boiler and transmit it to
the air before entering the boiler through the radiator, so as to
preheat the air to a certain temperature.
The air preheater is generally used for coal-fired boilers in power
station.It can be divided into tubular type and rotary type. The
rotary type can be further divided into wind hood rotary type and
heating surface rotary type.Power stations usually use the heating
surface rotary air preheater. Generally, the application in boilers
is two-compartment, three-compartment and four-compartment, among
which the four-compartment is more commonly used in CFB boilers.
Product advantages
1.High corrosion resistance property;
2.Small covering area;
3.Pipe and tube plate in every link between separated, the heated
bilges cold heat distortion is not bound to avoid stress
destruction;
4.Single pipe, tube single or parts of equipment failure does not
affect the heat normal operation, two fluid were heat tube, can go
outside fin
Functions
1. Improve and enforce combustion
The air through the heat exchanger enters the furnace, which
accelerates the drying, ignition and combustion process of the
fuel, ensures the stable combustion in the boiler and improves the
combustion efficiency.
2, Enhance heat transfer
Because 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 raised, so the radiation heat in the furnace can be
strengthened.
3,Reduce the loss of the furnace, lower the exhaust gas temperature
and improve the thermal efficiency of the boiler
Because of the stable combustion in the furnace and the enhanced
radiation heat exchange, the chemical incomplete combustion loss
can be reduced. On the other hand, the air preheater uses the
waster heat of flue gas to further reduce the loss of the exhaust
gas, thus improving the thermal efficiency of the boiler. According
to experience, when the air in the preheater rises by 1.5 degrees,
the exhaust gas temperature can be reduced by 1 degree. After
installation of the air preheater in the boiler, if the air
temperature can be raised by 150-160 degrees by the waste heat, the
exhaust gas temperature can be reduced by 110-120 degrees, and the
thermal efficiency of the boiler can be increased by 7-7.5E%. Fuel
can be saved by 11-12%.
4,Hot air can be used as fuel disiccant.
For layer boilers, if there is hot air, fuels with higher moisture
and ash content can be used. For power station boilers, hot air is
an important desiccant and pulverized coal conveying medium in
grease powder system.
Classification
According to the way of heat transfer, the air preheater can be
divided into two types:heat conduction type and regeneration
type.Among the heat conduction type, tubular air preheater is most
commonly used.With the increase of boiler parameters and capacity,
the heating surface of tubular air preheater increases, which
brings difficulties to the arrangement of the tail heating surface.
Therefore, most of the large capacity units adopt a compact, light
weight rotary air preheater. Air preheater is generally divided
into three types: plate type, rotary type and tubular type.
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.
Company Profile
Zhangjiagang HuaDong Boiler Co., Ltd.
Hua Dong Boiler Co., Ltd. is a high-tech enterprise specialized in manufacturing boilers. Established in early 1985s, has two manufacturing bases, this company covers 400,000㎡ with fixed assets amounting to USD 110,000,000. There are 1100 employees including 150 technicians and 600 coded welders. Hua Dong holds the manufacturing licenses for Grade A boilers and Grade A1&A2 pressure vessels issued by Chinese General Administration of Quality Supervision, Inspection and Quarantine; also it holds the "S" and "U" "NB" stamps issued by American Society of Mechanical Engineers; meanwhile, this Company has passed the certification of ISO9001, SO3834, EN12952 Quality Management System.
"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.
We strive to manufacture "Safe, Efficient, Energy-Saving and Environment-Friendly" boilers, provide new-type products in excellent quality, serve users sincerely to their satisfaction, and be a top supplier of boilers in China.
Declaration
Zhangjiagang Hua Dong Boiler Co.,Ltd has no subsidiaries.
Packaging & Shipping
Company Business
Our products have been wildly used in power plants and large international companies overseas.
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