Carbon / Stainless SteelStable Customized Tubular Air Preheater In Boiler ASME / ISO Certification
Brand Name:HDB
Certification:ISO9001,ASME,Grade A,SGS,EN
Model Number:Air Preheater
Minimum Order Quantity:1 Set
Delivery Time:30 days after deposit
Payment Terms:L/C, T/T, Western Union
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Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China
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Product Details
Carbon / Stainless SteelStable Customized Tubular Air Preheater In Boiler ASME / ISO Certification
Product Description
Counted on our professional knowledge, we cater to the needs from customers in renovation and modernization of their exsiting boilers. We have undertaken boiler air preheater and economzier replacement service for many years.
The purpose of the air preheater is to recover the heat from the flue gas(exhaust gases) from the boiler to improve boiler efficiency. Incidentally the gases are sent to the chimney or stack at lowered temperature so that the design of the ducting and the stack becomes simplified. Also it controls the temperature of gases coming out of the stack.
Air pre-heater is a device used to improve the heat exchange performance of the boiler and reduce energy consumption. It refers to the flue gas in the tail flue of the boiler which passes through the internal heat sink and preheats the air before entering the boiler to the heating surface with a certain temperature.Air preheater is generally divided into three types: plate type, rotary type and pipe type.The working principle of air preheater is introduced by taking rotary type as an example.A large number of unburned combustibles may deposit on the heat transfer elements and the air preheater may catch fire.The analysis of brake drop 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.
Functions
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
| 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
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
Certifications
Company Information
Fabrication area of 200,000 square meters
8 Engineers
200 Coded welders
30 Licensed Inspectors (including NDT level-lll instructors)
Grade-ALicenses for Design and Manufacture boiler (issued by the State Administration of Quality Supervision and Inspection)
ISO 90001:2015 Quality System
ASME Certificate of Utility Boiler
ASME‘S’ , ‘U’ and NB stamp authorization
Carbon / Stainless SteelStable Customized Tubular Air Preheater In Boiler ASME / ISO Certification
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