Low High Pressure Boiler Economizer with Finned Tubes and Max 60t/h Steam Production
Price:
$2,200-2,500
MOQ:
10
Delivery Time:
Negotiable
Brand:
HD Boiler
Product Description
Low / High Pressure Flue Gas Boiler Economizer Heat Exchanger Devices With Finned Tubes
Boiler Economizer
Introduction
The economizer performs a key function in providing high overall boiler thermal efficiency by recovering low-level energy from flue gas before it's exhausted to the atmosphere. It recovers this energy by heating the boiler feedwater. Economizers are tubular heat transfer surfaces used to preheat boiler feed water before it enters the steam drum or furnace surfaces, reducing operating costs by recovering extra energy from flue gas.
Procedure
Economizers also reduce the potential for thermal shock and strong water temperature fluctuations as feed water enters the drum or waterwalls. Increasingly stringent environmental regulations limiting nitrogen oxides and sulfur dioxide emissions can affect economizer design. The gas-side heat transfer coefficient is much less than the water-side coefficient, so outer tube surfaces may be finned to increase heat transfer surface area. The ultimate goal of economizer design is to achieve necessary heat transfer at minimum cost, with maximum allowable flue gas velocity being a key design criterion.
Specifications
| Name (unit) | Specification (mm) |
|---|---|
| Bare pipe (OD) | 25-1650 |
| Bare pipe (Thickness) | 2-40 |
| Fin (Thickness) | 0.6-3.0 |
| Fin (Height) | 5-30 |
| Fin tube thread pitch | 5-30 |
| Fin tube length | ≤12000 |
Material: Carbon Steel, Alloy, Austenitic Steel (Nickel and Chromium or Manganese)
Quality Control
- Impact test and Strength calculation report with applied materials information
- 100% NDT (non-destructive inspection) report of steel plate, tube and electrode
- X-ray, γ-ray and liquid penetrant test inspection report (welding seam) to ensure quality
- Hydraulic test report to ensure standard working pressure and safety
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Company
Zhangjiagang HuaDong Boiler Co., Ltd.
Location
Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China
Contact Person
Sandy Chen