Low Pressure Circulating Fluidized Bed Power Station Boiler

Low Pressure Circulating Fluidized Bed Power Station Boiler

Rated Capacity: 20~220 t/h
Rated Pressure: 3.8 ~ 9.8 MPa
Fuel: bituminous coal, anthracite coal, meager coal, lignitous coal, coal gangue, slag, etc.
Application: power station, thermal power station, chemical industry, etc.

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SHX series boiler is a new generation of low speed circulating fluidized bed boiler based on domestic and foreign advanced technology and experience. Circulating fluidized bed boiler is consisting of combustion chamber, separator, fly ash circulating system, superheater, convection bank, economizer, and air preheater.


Zhongding low pressure cyclone circulating fluidized bed boiler is a high efficiency, energy saving and environmental protect equipment. It is generally used in Power station, central heating, city heating, paper plant,etc


1. Low thermal inertia 

Boiler steel floor structure, significant savings the basic construction investment. Boiler with low thermal inertia, gas boost time is shortened.

2. High thermal efficiency

Suspension membrane wall furnace adopts the all-membrane wall light attached tube furnace wall structure, which is reliable avoidance, tight sealed, and best thermal efficiency.

3. Wide adaptability of different coals. 

External circulating fluidized bed boilers can burn both high-quality coal and low-quality coal. Combustion technology is environmental protection.

4. Loop seal system is simple, high combustion efficiency. 

High temperature material into the material entrained in the air stream collector, the material is collected back down into the feeder, and then returned to the combustion chamber by refeeder, multiple looping combustion, high combustion efficiency.

5. Holland adjustment range, fast load regulation. The heating surface is not layout in the boiler.

6. Avoid the problem of ash leakage and air distribute uniformity

heat-resistant alloy steel cylinder inline gray hood avoids the problems of ash leakage, air distribute uniformity, long life.

7. Environmental protection

Adopts the technology of low temperature combustion, decrease the emission of harmful gas, desulfurization can be done in the furnace, meet the requirement of the national energy saving and mitigation policy.


Model Rated
Capacity (t/h)
Pressure (MPa)
Rated Steam Temperature (℃) Feed Water
Temperature (℃)
Coal Consumption
Design Thermal Efficiency (%)
ZDG-20/3.8-M 20 3.8 450 105 2180 85
ZDG-25/3.82-M 25 3.82 450 105 2860 85
ZDG-30/3.82-M 30 3.82 450 105 4010 86
ZDG-35/3.82-M 35 3.82 450 105 4176 85
ZDG-40/3.82-M 40 3.82 450 105 5347 86
ZDG-45/3.82-M 45 3.82 450 150 5611 85
ZDG-75/3.82-M 75 3.82 450 150 8064 88.5
ZDG-75/5.29-M 75 5.29 490 150 8064 88.5
ZDG-130/3.82-M 130 3.82 450 150 13744 90
ZDG-130/5.29-M 130 5.29 490 150 13744 90
ZDG-220/9.8-M 220 9.8 540 150 23003 91
Note: Parameter is for reference only, the specific should follow the design institution.