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Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer

Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer

MOQ: 1 set
Standard Packaging: seaworthy packing
Delivery Period: 30 days
Detail Information
Place of Origin
JIANGSU,CHINA
Brand Name
HD Boiler
Certification
ASME, EN, SGS, ISO9001
Model Number
boiler economizer
Material:
Carbon Steel Or Stainless Steel,Boiler Steel,Steel Tube
Fuels:
Pulverized Coal
Surface Treatment:
Painted
Dimension:
Customized
Color:
Customer's Requirement
Usage:
Power Station
Product Description
Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer

 

 What are the main types of economizers?

 

Bare tube and finned tube economizers.


Description
 

Turning boiler feed water into superheated steam happens in three steps: preheating the feed water, evaporation, and superheating. Each step takes place on its own heating surface—and these surfaces, plus their connecting pipes, make up the boiler’s steam and water circuit.
 
Boiler economizers are part of this setup—they’re the ones that preheat the feed water. That makes them the lowest-temperature heating surface for the boiler’s working fluid in the entire steam and water system. And the fluid here? It’s just water (no boiling in a non-boiling economizer).


Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer 0
 
Types


If according to materials, economizers can be divided into steel tube economizers and iron economizers. At present, most large and medium volume boilers widely use steel tube made economizers, because they have high strength and reliable working ability, and are able to withstand impacts, meanwhile they have good performance of heat transfer, small structure and low cost. One weak point is bad corrusion resistance, but now the modern boiler feed water are strictly treated, so the problem is almost solved.
If according to heating extension of the working fluid, economizers can be divided into non-boiling and boiling types.
1. Boiling economizers: the outlet water temperature not only can reach the surnatured temperature, but also can make some water vapourized, the proportion is about 10-15% of total feed water, not more than 20% in case of much flow resistance caused to the working fluid.
2. Non-boiling economizers: the outlet temperature is 20-25 degrees lower than the boiling point under pressure given.
Most of medium-presssure boilers use boiling type economizers. This is because the latent heat of vaporization of water in medium-pressure boilers is high, and the heat of the heated water is smal. Thus it is necessary to send some water to be vaporized in boiler economizer so as to prevent unstable combusion in funaces and prevent increased consumption of metal in the heating surfaces as superheaters caused by too low outlet flue gas temperature. In addition, it can help to play the role of economizers.


Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer 1

 

Most superhigh-pressure boilers rely on non-boiling economizers. Here’s why: higher pressure means less latent heat in vaporization, but more heat needed to warm the water. Sending some water to the water walls to heat up helps keep furnace and flue gas outlet temps from spiking—stopping slag buildup on furnace heating surfaces. Hence, non-boiling types are standard here.
 
Boiler parameters are key for choosing economizer types. Different parameters change how much heat each of the three stages (preheating, evaporation, superheating) needs. That shifts how the heating surfaces are arranged. High-parameter large units? They need less heat for evaporation, but more for warming water, superheating steam, and reheating. So non-boiling economizers are their go-to.


Functions
1. fuel saving: the economizers are placed at the rear part of boilers. This way can decrease the smoke and gas temperatures, thus to save fuels.
2.improve the working conditions of steam drums: due to economizers, the feed water temperature is increased when entering the steam drum. It reduces the temperature difference between the feed water and steam drum wall as well as steam drum thermal stress, so that it improve the working conditions of steam drums and increase the service life.
3.reduce the boiler manufacturing cost: for the feed water is heated in the boiler economizers. The use of low temperature spare parts as boiler economizers to replace some of high-priced high temperature water wall panels reduces the cost to manufacture boilers.
 
Specifications

 
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

 
Quality Control
 
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

products
PRODUCTS DETAILS
Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer
MOQ: 1 set
Standard Packaging: seaworthy packing
Delivery Period: 30 days
Detail Information
Place of Origin
JIANGSU,CHINA
Brand Name
HD Boiler
Certification
ASME, EN, SGS, ISO9001
Model Number
boiler economizer
Material:
Carbon Steel Or Stainless Steel,Boiler Steel,Steel Tube
Fuels:
Pulverized Coal
Surface Treatment:
Painted
Dimension:
Customized
Color:
Customer's Requirement
Usage:
Power Station
Minimum Order Quantity:
1 set
Packaging Details:
seaworthy packing
Delivery Time:
30 days
Product Description
Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer

 

 What are the main types of economizers?

 

Bare tube and finned tube economizers.


Description
 

Turning boiler feed water into superheated steam happens in three steps: preheating the feed water, evaporation, and superheating. Each step takes place on its own heating surface—and these surfaces, plus their connecting pipes, make up the boiler’s steam and water circuit.
 
Boiler economizers are part of this setup—they’re the ones that preheat the feed water. That makes them the lowest-temperature heating surface for the boiler’s working fluid in the entire steam and water system. And the fluid here? It’s just water (no boiling in a non-boiling economizer).


Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer 0
 
Types


If according to materials, economizers can be divided into steel tube economizers and iron economizers. At present, most large and medium volume boilers widely use steel tube made economizers, because they have high strength and reliable working ability, and are able to withstand impacts, meanwhile they have good performance of heat transfer, small structure and low cost. One weak point is bad corrusion resistance, but now the modern boiler feed water are strictly treated, so the problem is almost solved.
If according to heating extension of the working fluid, economizers can be divided into non-boiling and boiling types.
1. Boiling economizers: the outlet water temperature not only can reach the surnatured temperature, but also can make some water vapourized, the proportion is about 10-15% of total feed water, not more than 20% in case of much flow resistance caused to the working fluid.
2. Non-boiling economizers: the outlet temperature is 20-25 degrees lower than the boiling point under pressure given.
Most of medium-presssure boilers use boiling type economizers. This is because the latent heat of vaporization of water in medium-pressure boilers is high, and the heat of the heated water is smal. Thus it is necessary to send some water to be vaporized in boiler economizer so as to prevent unstable combusion in funaces and prevent increased consumption of metal in the heating surfaces as superheaters caused by too low outlet flue gas temperature. In addition, it can help to play the role of economizers.


Customized Boiler Water Treatment Power Station Coal-Fired CFB Boiler Economizer 1

 

Most superhigh-pressure boilers rely on non-boiling economizers. Here’s why: higher pressure means less latent heat in vaporization, but more heat needed to warm the water. Sending some water to the water walls to heat up helps keep furnace and flue gas outlet temps from spiking—stopping slag buildup on furnace heating surfaces. Hence, non-boiling types are standard here.
 
Boiler parameters are key for choosing economizer types. Different parameters change how much heat each of the three stages (preheating, evaporation, superheating) needs. That shifts how the heating surfaces are arranged. High-parameter large units? They need less heat for evaporation, but more for warming water, superheating steam, and reheating. So non-boiling economizers are their go-to.


Functions
1. fuel saving: the economizers are placed at the rear part of boilers. This way can decrease the smoke and gas temperatures, thus to save fuels.
2.improve the working conditions of steam drums: due to economizers, the feed water temperature is increased when entering the steam drum. It reduces the temperature difference between the feed water and steam drum wall as well as steam drum thermal stress, so that it improve the working conditions of steam drums and increase the service life.
3.reduce the boiler manufacturing cost: for the feed water is heated in the boiler economizers. The use of low temperature spare parts as boiler economizers to replace some of high-priced high temperature water wall panels reduces the cost to manufacture boilers.
 
Specifications

 
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

 
Quality Control
 
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

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