Coal Biomass Boiler Economizer Heat Exchanger , Industry Coal
Boiler Parts
Quick Details Specifications
- The boiler economizer is an indispensable mechanical device for
coal fired boilers, and is located at the boiler flue, where heat
is captured from the flue gas in order to pre-heat cold water inlet
or heat the boiler feed water. Our economizers are generally made
of 20 low and medium pressure boiler pipes, 20G seamless steel
tubes or ASME grade steel tubes. It reduces the flue gas
temperature and maximizes the heat recovery to help customers
reduce fuel costs. When entering the steam drum, the temperature of
the feed water is increased after it has been heated using the
economizer.
-
- The thermal stress caused by the temperature difference between the
steam drum wall and the feed water is reduced, which reduces the
shrink and swell in the steam drum. Our economizer is an excellent,
less expensive replacement for high temperature boiler water wall
tubing, thus reducing manufacturing costs for coal fired boilers.
- (1) The economizer is a steam generation system as like a boiler.
when the exhaust gas discharge from the engine cylinder through the
exhaust valve it goes to the boiler for generate steam by heating
of water.
-
- (2) After those gas it goes through the economizer the remaining
exhaust gas temperature is heated the water in economiser. it help
to generate steam, and it is improving the efficiency and save the
fuel consumption
-
- (3) An economizer uses the waste heat from the boiler exhaust, that
would otherwise be lost to atmosphere to (in most cases) preheat
the feed water into the boiler.This improves the boiler efficiency
and reduces fuel costs.
Competitive Advantage
- 1.Fuel saving: After the high temperature fuel gas released by fuel
combustion transfers to the boiler water wall tubing, superheater,
and reheater, the temperature is extremely high, the economizer
makes it ideal for preventing heat loss. The economizer located at
the flue of the boiler reduces the flue gas temperature, and
maximizes the heat recovery to lower customer fuel costs.
-
- 2.Improvement of boiler steam drum working conditions: When
entering the steam drum, the temperature of the feed water is
increased after it has been heated using the economizer. The
thermal stress caused by the temperature difference between the
steam drum wall and the feed water is reduced, thus reducing the
shrink and swell of the steam drum, and extends the service life.
-
- 3.Cost reduction of coal fired boilers: Water is being heated in
the boiler economizer made using low temperature material. This
makes the economizer a less costly replacement for high temperature
boiler water wall tubing, and reduces overall boiler manufacturing
costs.
Economizers must be sized for the volume of flue gas, its
temperature, the maximum pressure drop allowed through the stack,
what kind of fuel is used in the boiler, and how much energy needs
to be recovered. Economizers designed for natural gas only, would
likely plug-up if installed on a coal boiler and would face
increased risk of corrosion if installed on an oil-fired boiler.
Some units are designed to keep the flue gases above condensation
temperature, and others are made of materials that resist the
corrosive effect of condensed flue gases.
![Highly Accuarcy Industrial Coal Fired Boiler Stack Economizer For Power Plant](http://img.everychina.com/nimg/6c/b6/3140e1ee2e3e90f02a002d7b8351.jpg)
Parameters
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 |
*Note:HD BOILER can bespoke special type of economizer according to
customer's requirement.
Internal heat exchangers
1.Subcooling may also be produced by superheating the gas leaving
the evaporator and heading to the gas compressor.
2.These systems withdraw heat from the liquid line but heat up the
gas compressors suction.
3.This is a very common solution to insure that gas reaches the
compressor and liquid reaches the valve.
4.It also allows maximum heat exchanger use as minimizes the
portion of the heat exchangers used to change the temperature of
the fluid,and maximizeds the volume in which the refrigerant
changes its phase.
![](http://img.everychina.com/nimg/c1/41/1ca69de1ea2b3383ef052665db38.jpg)