Zhangjiagang HuaDong Boiler Co., Ltd.
Zhangjiagang HuaDong Boiler Co., Ltd.
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ASME Certification Air Preheater In Thermal Power Plant Tubular Alloy Stainless
Product Introduction
Air preheater (air preheater) have also been referred to as "for the air preheater, is to improve the boiler heat transfer performance, reduce the heat loss of the role of the air preheater, a preheating equipment is to remove the tail flue gas of boiler to carry heat, through the heat sink to before entering the boiler air, commonly referred to as the temperature of air is preheated to a certain for a number of used in coal-fired power plant boiler air preheater can be divided into the tube box type rotary type two kinds, including rotary heating surface is divided into the wind shield rotary and rotary type two kinds of power station boiler heating surface rotary preheater is often adoptedThe application in boiler is generally two - bin three - bin four - bin type, which is often used in circulating fluidized bed boiler
Working principle
The rotary air preheater, for example shows that the principle of air preheater, the work will slow the rotation of the, the flue gas into the flue gas air preheater lientang then expelled, and carry the heat in flue gas will be absorbed by the cooling fin in air preheater, after the air preheater, slow rotation and fin movement to the air side, to transfer heat to the air before entering the boiler air preheater in the application of the boiler is three more points bin type, with fire alarm system gap adjusting air preheater system and frequency conversion control system of simple operation, which is convenient to useIt is widely used in flue gas boiler system because of its safe operation and high heat exchange performance
Effect
1. Improve and intensify combustion
After passing through the waste heat boiler, the air enters the furnace, accelerating the drying, ignition and combustion process of the fuel, ensuring the stable combustion in the boiler and improving 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 increased, which can strengthen the radiation heat transfer in the furnace.
3, Reduce the loss in the furnace, reduce the smoke exhaust temperature, improve the boiler thermal efficiency
The chemical incomplete combustion loss can be reduced due to the stable combustion in the furnace and the intensification of radiation heat exchange.On the other hand, the air preheater USES flue gas waste heat, which further reduces the smoke exhaust loss, thus improving the boiler thermal efficiency.According to our experience, when the air is increased by 1.5℃ in the preheater, the smoke exhaust temperature can be reduced by 1℃. After installing the air preheater in the boiler flue, if the waste heat of the air is 150-160℃, the smoke exhaust temperature can be reduced by 110-120℃, and the thermal efficiency of the boiler can be increased by 7%-7.5%.It can save 11-12% fuel.
4. Hot air can be used as fuel desiccant
For the layer burning furnace, the hot air can use the fuel with higher moisture and ash content, and for the power station boiler, the hot air is an important desiccant for the powder system and the coal conveying medium.
Company Information
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.