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[China]
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Address: Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China
Contact name:Sandy Chen
Zhangjiagang HuaDong Boiler Co., Ltd. |
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Natural Gas Heater Tube Bundle For Steel Mill Boiler Pressure Parts For Waste Heat Boiler
Product Description
Air pre-heater is a kind of equipment used to improve the heat
exchange performance and reduce energy consumption of the boiler,
which means that the flue gas in the tail flue of the boiler will
preheat the air before entering the boiler to a certain temperature
through the internal radiator. Air preheater is generally divided
into three types: plate type, rotary type and tube type. Taking the
rotary type as an example, the working principle of air preheater
is introduced. A large number of unburned combustibles will deposit
on the heat transfer elements, which may cause the air preheater to
ignite. The causes of ignition and the countermeasures are
described in detail. The shutdown analysis and air leakage control
are also introduced in detail.
Different types
For the use in Steam Generators (boilers)in Thermal power stations of Utility power stations, there are two types of design of the Airpreheaters. One is a tubular type built into the boiler outlet Flue_gas ducting and another one is of the regenerative type known as Ljungstrom (named after the name of inventor) Regenerative Air Pre Heater(RAPH),a rotating type. This may be horizontal (now very common in power generation utilities) or vertical.
Parameter
| Name | Thermal efficiency improving coal fired industrial steam boiler combustion APH air preheater |
| Material | Carbon steel or equivalent |
| Structure | vertical |
| Tubes | enameled seam or seamless tubes |
| Tube OD | as required |
| Enamel thickness | 0.34+/-0.06mm |
| Size | Customzied design |
Product advantages
Benefits
1. Improved combustion rate and then increases steam generations rate of boiler.
2. Due to higher temperature of air, furnance temperature increases, so low grade coal can be burnt efficiently.
3. Air heated by heat of exhaust gases.It reduces fuel consumptions.Therfore thermal efficiency of boiler increased.
4. Saving in fuel consumption and Increased steam generation capacity.
Parameters
| 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 | |
Company Information
The products of our company have been widely used in major power
plants of various provinces and cities in China, bringing stable
and significant economic and social benefits to cooperated power
plants. At the same time, we attach great importance to product
development and strive to improve product quality. Through the
cooperation with a number of domestic and foreign companies, we
constantly explore the international market.
