High Efficiency Boiler In Thermal Power Plant , Power Plant
Economiser Easy Operation
Company Introduction
Established in 1985, Zhangjiagang Hua Dong Boiler Co., Ltd.
(trading as HD Boiler), is a
professional industrial manufacturer, producing utility
boiler,industrial boiler,HRSG boiler and all
kinds of boiler parts, such as waterwall panels, economizers, air
preheaters, superheaters,
headers, spiral fin tubes, H-fin tubes, heat pipes etc.
We are the qualified supplier for the following large boiler
manufacturers in China:
- Shanghai Boiler Works Ltd.
- Hang Zhou Boiler Group Co. Ltd.
- Dong Fang Boiler Group Co., Ltd.
- Wuxi Huaguang Industrial Boiler Co., Ltd.
- Jiangxi Jianglian Energy & Environment Co., Ltd.
- Suzhou Hailu Heavy Industry Co., Ltd.
Production
Economizer is installed on the lower part of the boiler tail flue
for recycling the waste heat of smoke, a device heating boiler feed
water into steam drum pressure of saturated water heating surface,
due to its high temperature flue gas heat, reduces the exhaust
temperature of flue gas, save the energy, improve the efficiency,
so called the Economizer.
Steel tube economizer is not limited by pressure, can be used as a
boiling type, generally from the outer diameter of 32 ~ 51 mm
carbon steel tube.Fins and fins are sometimes added to the tube to
improve heat transfer.The tubular economizer consists of
horizontally arranged parallel elbow pipes (commonly known as
serpentine pipes).
Economizers are mainly used in industry, but also gradually spread
to agriculture and some related industries on the commercial.
Economizer is a mechanical device intended to reduce energy
consumption, or to perform another useful function like preheating
a fluid. The economizer is used for other purposes as well boiler,
powerplant, and heating, ventilating, and air-conditionin(HVAC)
uses are discussed in this article.In simple terms, an economizer
is a heat exchanger.
Steam boiler economizer can be made of alloy steel, carbon steel or
other kind of material as per the customer’s requirements. It
conforms to the standard of ASTM, EN, DIN, GB. The manufacturing
equipment is 30~185MN hydraulic press, the forging ratio >3,
Main technical advantages of our low temperature economizer
1. The equipment body can be designed into many modules to ensure
the long term and stable running;
2. The low temperature economizer manufactured by our company can
guarantee the wall temperature is 5-10 ℃ higher than the acid , and
flue outlet temperature is 10-15 ℃ higher than the wall surface
temperature
3. Wall surface temperature can be adjusted according to the boiler
load and fuel changer to avoid corrosion under low temperature
4. Changer the DCS system of the existing boiler to achieve the
auto and remote control by computer.
Specifications
| Description | Heat boiler economizer, steam boiler economizer, oil boiler
economizer, coal steam boiler economizer, Gas boiler economizer,etc |
| 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 |
ADVANTAGES
1. The economizer is to heat the boiler feed water (softened water)
to raise the feed water temperature, instead of heating the boiler
water.Absorbing the waste heat of flue gas to heat the boiler,
reducing the heat loss, improving the efficiency of the boiler and
saving coal accordingly.
2. The economizer shall install the safety valve and temperature
gauge separately. In case of water shortage accident of the boiler,
the bypass waterway of the economizer shall be opened immediately
and the inlet and outlet of the economizer shall be closed.
3. The feed water is heated in the economizer before entering the
evaporative heating surface to reduce the heat absorption of water
in the evaporative heating surface, which is equivalent to
replacing part of the evaporative heating surface with the
economizer.
4. The heating surface of the economizer is much cheaper than that
of the evaporating heating surface.
