Audited Supplier
Heat Recovery Boilers Economizer / Coils SA210M A1 Steel Boiler Parts
Product Description
Economizer coils are used in downstream of Boiler bank to preheat the feed water absorbing heat from hot exhaust gases. Economizers are always water tube type. Economizers have different types of Tubes depending upon the application. Bare tubes in Economizers are widely used in Industrial boilers and for applications like Heat recovery boilers in Sulfuric acid plants, gilled tubes are employed. Finned tubes are popular in HRSG applications. Feed water can be heated up to a level about 20 - 30 C below saturation temperature of the boiler.
Application
During boiler operation in typical commercial and industrial applications, approximately 10-20% of the heating value of fuel is expelled with the stack gases to the atmosphere. Stack economizers are designed to recover significant amounts of this stack gas energy loss, thereby vastly improving boiler system efficiency. There are several considerations when selecting an economizer:
• Gas-side Pressure Drop. Added back-pressure on the boiler stack affects the combustion air fan throughput capability. The economizer and combustion air fan(s) must be sized properly in order to assure a suitable system operation and capacity.
• Feedwater Temperature. The feedwater to the economizer must be deaerated and the temperature setpoint minimally at 220oF to prevent tube corrosion.
• Water-side Pressure Drop. Feedwater pumps must be sized to accommodate the economizer pressure drop. Additionally, a continuous modulating feedwater system is required to ensure proper flow rates through the economizer.
Specification
Description | Boiler economizer |
Material | Alloy steel, Carbon steel, SA210C ,SA213T22, etc |
Material standard | ASTM, EN or ISO etc. |
Dimension | Customization |
Weight | Min: 10 ton Max.:1000 ton |
Smelting Process: | EF+LF + VD |
Process | Material→Ingot → Hot/Cold-Rolling→ Heat treatment (Normalizing+ tempering) → Inspection →rough machining→UT →2nd Heat treatment →finishing machining →Inspection |
UT standard | ASTM A388 or EN10228, etc |
1. Impact test and Strength calculation report with applied materials information.
2. 100%NDT(non-destructive inspection) report of steel plate, tube and electrode.
3. X-ray, γ-ray and liquid penetrant test inspection report (welding seam): to ensure the quality of the entire boiler.
4. Hydraulic test report: ensure the standard working pressure and safety.
Company Information
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.
Certifications
FAQ
- why choose us?
We are one of the best boiler manufacture suppliers in china, Including utility boiler, HRSG boiler , coal-fired, oil(gas)-fired , coal- water-slurry-fired and garbage- fired steam/ hot water boilers. organic heat carrier boilers ,etc., and boiler spare parts (Economizer,finned tube, header,steam drum,superheater,water wall panel, air preheater,cyclone separator,etc., we ensure the delivery time,high quality, and the best after-sale service for you.
2. How to order?
Welcome come to our factory for inspecting and discussing the technical details
3. Main manufacturing equipment?
Our products' quality is ensured by advanced, excellent facilities and manufacturing equipment. we have introduced 500 sets of advanced processing and inspection equipment, including plasma cutting machine, NC drilling equipment, automatic submerged arc welding system, welding equipment and real-time online imaging detection system,ect., which sucessfully ensure excellent quality of iur products.
4. How long the warranty period will be valid?
12 months after delivery
5. How the goods will be packed?
Iron frame packing and seaworthy packing.
6. Is there any item belong to hazardous nature.
There is no hazardous nature in the item.
7. Do I have a choice of colors?
HDB Boilers are available in many different color combinations.
