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Double Cyclone Low Speed Circulating Fluidized Bed Boiler

  • Rated Capacity 20-75 t/h
  • Rated Pressure 3.82Mpa-5.29Mpa | 38.2bar-52.9bar
  • Fuel Bituminous coal, anthracite, lean coal and lignite coal, coal gangue, slag,etc.
  • Application Power Plant,Central Heating,City Heating,Paper plant,etc
  • Certification ISO,CE,CCC,BV,ETC

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New type double cyclone low speed circulating fluidized bed power station boiler  belongs to the Zhengzhou Circulating Fluidized Bed Boiler Reseach Institute, which adopts the latest scientific research achievements of Tsinghua University. This type boiler inherits the original technical advantages, at the same time,it achieves the scientific breakthrough in the technology of vortex fluidized combustion ,Wind vortex separation structure design and parameterized design,the separation vortex wind structure design and parametric design technology, returning technology. 

1. It adopts the membrane water wall to arrange the furnace, separator, revert system into one whole part, the structure is compact.
2. It has achieved major technical breakthrough in structure and parameterization of separator, effectively improve the burning and separator efficiency.
3. Return feeding of revert system is constituted by 2 pieces of membrane water wall, parts of heat energy carried by flying ash can absorbed by water wall, and besides it uses the device of style type boiling fluidization inheritance return feeding and realize the fluidized state of return fuel.
4. The anti-erosion design uses many measures,wide coal adaptability, and vortex fluidized combustion technology realize the material burning in swirl fluidized combustion cycles inside of combustion chamber, thus improving the burning efficiency. Besides, it reduce the fault rate and can run continuously for long time.
5. It adopts low temperature combustion technology, can effectively reduce the harmful gas,and realize the desulfuration inside of furnace, accord with national policy of energy saving and environmentally friendly.


Model Rated Evaporation (t/h) Rated Pressure
Rated Steam Temperature (℃) Feed Water Temperature (℃) Design Efficiency (%) Body Dimension 
ZDG-25/3.82-M 25 3.82 450 105 ≥ 86 12650×8530×13200
ZDG-35/3.82-M 35 3.82 450 105 ≥ 86 13350×9880×15800
ZDG-35/5.29-Q 35 5.29 450 150 ≥ 86 13350×9880×15800
ZDG-40/3.82-M 40 3.82 450 105 ≥ 86 14530×10280×18800
ZDG-65/3.82-M 65 3.82 450 140 ≥ 86 15530×11080×21300
ZDG-75/3.82-M 75 3.82 450 150 ≥ 86 16240×10600×33500
ZDG-130/3.82-M 130 3.82 450 150 ≥ 86 21060×14400×40650
ZDG - 220/9.8 - M 220 9.8 540 215 ≥ 86 25540×23420×47800
Note: 1. Parameter is for reference only, we can design the new products based on your requirement.           2. Available fuel: Anthracite, Bitumite, Lignite, Lean coal, Coal gangue, and chain slag, etc.
Transaction Process
Customer Inquiry -- Offer Professional Consulting Service -- Place Order -- Customize Boiler Based on Customers’ needs --Production-manufacturing -- Payment -- Impeccable After Sale Service (installation and debugging, periodic maintenance, etc.)

Offered Technical Documentations
Installment and Operation Instruction
Quality Certificate
Inspection Certificate of Boiler quality
General Drawing of Boiler
Foundation Drawing
Boiler Body Drawing
Boiler Room Design Drawing
Drawing of Valves, Instruments and Accessories

Company Strength
Sitong boiler is a national approved and designated enterprise, with design and manufacture license permits of Class A boiler and D1, D2 pressure vessel. The company has passed ISO 9001 international quality system certification, and gained the international certificates of CE, SGS, and BV, etc. The boiler products are exported to more than 60 countries. The factory covers an area of 120 thousands㎡, equipped with plenty of international advanced manufacture equipment, such as CNC cutting machine, automatic submerged arc welding machine, X-ray detection machine, etc.
company strength of Sitong Boiler


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