Economizer fin tube Serpentine Coil for boiler Industry power
plants saving fuel
Advantages and Benefits of Serpentine Coil Economizer
1. It recovers more heat of flue gases which normal air pre-heater
cannot do.
2. Due increase in fuel prices, all power plants are facing
pressure for increasing boiler efficiency. So by using economizer,
this pressure can be minimized.
3. Power plants where it is not used, a large quantity of water is
required to cool the flue gas before desulphurization which is
minimized by using economizers.
4. The efficiency of the power plant reduced when steam air
pre-heater required steam.
Serpentine Tube Economizer Application
1. It is used in all modern plants. The use of economizer results
in saving fuel consumption increases steaming rate and boiler
efficiency.
Some of the common applications of economizer are given below, In
steam power plants it captures the waste heat from boiler stack
gases (flue gases) and transfers it to the boiler feed water.
2. Air-side economizers HVAC (Heating, Ventilation, and Air
Condition) can save energy in buildings by using cool outside air
as a means of cooling the indoor space.
3. Refrigeration: This is commonly used in industrial refrigeration
where vapor compression refrigeration is essential. Systems with
economizers aim to produce part of the refrigeration work at high
pressures, a condition in which gas compressors are normally more
efficient.
Boiler Economizer Introduction
1. In a steam boiler, it is a heat exchanger device that heats up
fluids or recovers residual heat from the combustion product i.e.
flue gases in a thermal power plant before being released through
the chimney.
2. Flue gases are the combustion exhaust gases produced at power
plants consist of mostly nitrogen, carbon dioxide, water vapor,
soot carbon monoxide etc.
3. Hence, the economizer in thermal power plants is used to
economize the process of electrical power generation, as the name
of the device is suggestive of. The recovered heat is in turn used
to preheat the boiler feed water, that will eventually be converted
to super-heated steam.
4. Thus, saving on fuel consumption and economizing the process to
a large extent, as we are essentially gathering the waste heat and
applying it to, where it is required. Nowadays, however, in
addition to that, the heat available in the exhaust flue gases can
be economically recovered using Air Preheater which is essential in
all pulverized coal-fired boiler.
The function of Boiler Economiser
1. The Economizer in Boiler works on the principle of Heat
Transfer. Heat transfer usually takes place from high temperature
to low temperature.
In the case of Boilers, flue gases or exhaust from the boiler
outlet are at high temperature and water that needs to be preheated
is at low temperature.
2. So, this temperature difference between water and flue gases
helps to increase the feed water temperature.
3. Depending on the type of operations, design of Economisers can
be smoke tube type or water tube type.
4. In smoke tube type flue gases are inside the tubes and water is
on the shell side while in the water tube type, water is in the
tube and flue gases are on the shell side.
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 |
Perfect Welding & 100% PT,RT,NDT
