CFB (circulating fluidized bed) coal-fired steam boiler

CFB (circulating fluidized bed) coal-fired steam boiler

coal-fired boiler

  • Working pressure:35-75 t/h
  • Product thermal capacity:1.25-5.3 MPA
  • Outlet temperature:194-485 ℃
  • Available fuel:Bituminous coal, anthracite, meagre coal, lignite, gangue, waste, sludge
  • Available industries:Chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital

Introduction

As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the NOx emission is much lower than that of pulverized coal furnace, only 200ppm. CFBC can desulfurize directly during the combustion process, and the desulfurization efficiency is high. The technology and equipment are simple and economic, and the costs of its initial investment and operation are much lower than those of dry pulverized coal furnace and flue gas desulfurization (PC+FCD). The discharged ash residue has good activity and is easy to be comprehensive utilized without secondary ash residue pollution. The load adjustment range is large, and the low load can be reduced to about 30% of the full load.

Technical advantages

  1. High efficiency, wear resistance, separation efficiency ≥ 98%, effectively improve the combustion efficiency of the boiler thermal efficiency.
  2. Large furnace, low velocity design; the application of wearproof tube technology, reducing erosive abrasion
  3. Adopt bell type hood to distribute air averagely and avoid fuel reverse to wind chamber.
  4. The flange of the socket is welded by robots.
  5. By particle optimization, the operating bed pressure can be decreased to 3500Pa, which effectively saves operating costs and greatly reduces the oxynitride generated.

Product parameters

ModelRated Thermal Power t/hWorking Pressure MPARated Output Water Temperature ℃Thermal Efficiency %
DHX35-1.25-AⅠ351.2519489
DHX50-1.25-AⅠ501.2519489
DHX75-1.25-AⅠ751.2519489
ZZ-35/3.82-AⅠ353.8245089
ZZ-50/3.82-AⅠ503.8245089
ZZ-65/3.82-AⅠ653.8245091
ZZ-75/3.82-AⅠ753.8245091
ZZ-75/5.3-AⅠ755.348591

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