Industry oil fired boiler spare parts H fin tube economizer ISO9001
certification gas compressors
How does boiler spare parts economiser work
1. Boiler stack economizers are simply heat exchangers with hot
flue gas on one side and water on the other. Or, in direct contact
condensing units, the make-up water is in direct contact with the
flue gases.
2. 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.
3. 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.
Boiler economizer Introduction
1. Flue gases from large boilers are typically 450 – 650°F. Stack
Economizers recover some of this heat for pre-heating water. The
water is most often used for boiler make-up water or some other
need that coincides with boiler operation. Stack Economizers should
be considered as an efficiency measure when large amounts of
make-up water are used (ie: not all condensate is returned to the
boiler or large amounts of live steam are used in the process so
there is no condensate to return) or there is a simultaneous need
for large quantities of hot water for some other use.
2. The savings potential is based on the existing stack
temperature, the volume of make-up water needed, and the hours of
operation. Economizers are available in a wide range of sizes, from
small coil-like units to very large waste heat recovery boilers.
See also Flue Gas Condensers that are used when water and flue
gases come in direct contact with each other.
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.
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 |
Casting product as connection
