|
[China]
Trade Verify
Address: Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China
Contact name:Sandy Chen
Zhangjiagang HuaDong Boiler Co., Ltd. |
|
Verified Suppliers
|
|
|
Utility Boiler accessories gilled tube economizer coal fired
Stainless steel seamless pipe
Product Description
Boiler economizers reuse exhausted flue gas to pre-heat the
feedwater entering the boiler. Essentially a mini-heat exchanger,
economizers improve boiler performance while increasing fuel
efficiency. By rapidly increasing feedwater temperature through
captured flue gas, economizers also provide a significant
improvement in steam generation and response time.
Technical specifications
Material Structure
Consists of a serious of spiral fin tubes, the headers of inlet and
outlet, bend, frame and other auxiliaries.
Structure Arrangement
In line / staggered arrangement.
Characteristics
1. This type of economizer can largely develop the heat exchanging
area than the bare economizer to add the heat transfer area, reduce
the volume, compact structure and reduce the number of elbow and
welding to make less leakage and add the heat transfer efficiency.
2. Not easy to collect dust and the fume pass through the fin tube
to form the boundary layer to occur the vortex to make less chance
for the fly ash particle to touch the tube wall.
3. Widely temperature range, high pressure limit.
4. Durable strong impact, reliable operation.
5. less fume resistance, reduced abrasion and long working life.
6. Beautiful appearance, simple fabrication process.
7. Diverse layout.
8. Ease of installation, ease of construction.
9. A wide range of working pressure .
Manufacturing and acceptance criteria
• JB/T6512 "boiler with a high-frequency resistance welding
spiral fin tube manufacturing technology conditions";
• HG/T3181 "high-frequency resistance welding spiral fin tube";
• JB/T6511 "spiral finned tube test technical conditions."
• JB1611 "boiler tube mane box assembly conditions";
• JB/T1612 "boiler pressurufacturing conditions."
• JB16I3 "boiler pressure parts welding conditions."
Parameters
| Name | Economizer |
| specifications of finned tube | unit(mm) |
| Bare pipe(od) | 25-165 |
| bare pipe(thick) | 2-8 |
| finned thicks | 0.6-3.0 |
| finned height | 5-30 |
| finned tube thread pitch | 5-30 |
| finned tube length | ≤12000 |
*Note:HD BOILER can bespoke special type of economizer according to
customer's requirement.
Testing
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.
1. Fabrication area of 400,000 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
