Zhangjiagang HuaDong Boiler Co., Ltd.
Zhangjiagang HuaDong Boiler Co., Ltd.
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CFB Boiler Spiral Finned Tube Cast Iron stack Economiser factory optional device High efficiency Annealing treatment
Spiral Finned Tube Economizer
The economizer can be installed at the rear of exhaust gas stovepipe to recovery exhaust gas heat,increase the electricity output,lower the coal consumption.spiral finned tube economizer is a new and efficient heat transfer equipment, which is a good solution to the light tube economizer because of badly worn, short life and other shortcomings.
Details
Heat transfer area can be greatly extended, reducing the volume and angle fittings, enhanced heat transfer. As gas flows through the finned tube forming the boundary layer, resulting in the vortex.Adapting to wide temperature, high pressure;impact resistance low flue gas resistance.
Characteristics
a) Dimensional range
| Diameter | 6 – 102 mm(0.24 – 4.02 in.) |
| Wall thickness | 0.3 – 9 mm(0.01 – 0.33 in.) |
| Length | up to 25,000 mm(984 in.) |
b) Annealing conditions
• Hard
• Annealed conforming to standards (soft, half-hard, blank, etc.)
• According to customer specifications
Purpose
Using an economizer does not just prevent heat loss — it can also extend the life of the boiler. Stresses from using cooler temperature make-up water, known as “thermal shock”, can subject wear and tear on the boiler’s structural integrity over time. This hammering “shock” effect occurs as the boiler’s fixed tube-sheets and fire-tubes rapidly contract from the sudden make-up of cooler temperature water. However, when this water is pre-heated, the temperature differential is far less extreme, putting less strain on the boiler and giving it a longer operating life.
Quality Control
1. Fabrication area of 200,000 square meters
2. 150 Engineers
3. 600 Coded welders
4. 60 Licensed Inspectors(NDT Level-III instructors)
5. Class-A Licenses for Design and Manufacture Boiler
6. ISO 9001:2008 Quality System
7. ASME Certificate of Power Boilers
8. ASME 'S','U' and NB stamp authorization
Certificate
Company Introduction
Established in 1985,Zhangjiagang Hua Dong Boiler Co.,Ltd.(trading as HD Boiler),produces power plant; industrial; waste heat; waste incineration; biomass; organic heat carrier and electric steam boilers. Coupled with a comprehensive range of heating surfaces, HD Boiler brings to the market a unique service including boiler design , fabrication, installation, maintenance and replacement of boiler pressure parts.