Fluidized bed coal fired boiler is a new type of boiler with less installation workload, short installation cycle, small occupation area and low construction cost. This series of fluidized bed boiler is the commercial name of a kind of water tube boiler which is arranged in the four corners with the descending tube which is not heated and has the function of self-support, and the drum is generally arranged into the horizontal type or single drum type before the furnace. The model wall structure can not only reduce air leakage, but also adopt light tube furnace wall, without heavy refractory and thermal insulation brick wall, so the heat storage is small and the time is short.
Through design and development, our company has fully grasped the basic principle of the furnace type, product performance and manufacturing technology. Combined with the characteristics of coal burning, continuous digestion and absorption, improvement of research and development, has formed a characteristic Angle tube steam boiler. This series of boilers adopt unique water circulation structure, safe and reliable. Angle tube boiler for self – support structure, no steel frame, good seismic performance. Positive beam type chain grate structure, uniform pressure warehouse air supply, suitable for wide coal design.
Fluidized bed coal fired boiler has high thermal efficiency, wide load regulation range, low operating cost, and very low failure rate, and can run without trouble for a long time. This series of CFB boilers, as the replacement products of coal fired chain boilers, have become the fist products to participate in the market competition with its excellent advanced energy-saving characteristics. This series of boiler products can be easily replaced, low resistance, no dust-pouring bell hood. The separator and the center barrel are improved with low resistance and high separation efficiency.
Energy-saving CFB boiler structure membrane type water-cooled wall hanging furnace and separator inlet for membrane type water-cooled flue. Adopt the patented reverse material device and configure the independent Roots fan for air supply, saving power consumption. Adopt low bed pressure operation mode. The primary fan with lower pressure head is used to reduce the power consumption of the fan. Optimized secondary air layout and nozzle flow rate, reduce the pressure head of secondary fan. Improve the fuel crushing and screening system to make the coal particle size meet the design requirements.
Compared with traditional coal-fired boilers, fluidized bed coal fired boiler have higher thermal efficiency and less pollutant emission. At the same time, it also has more obvious advantages in energy conservation and environmental protection, effectively alleviating energy shortage and reducing pollutant emission. Circulating fluidized bed boilers discharge a small amount of nitrogen oxides in the actual combustion process, and can achieve a wide range of load regulation, combustion ash can also be a good comprehensive utilization, has a strong combustion adaptability. Zozen Boilers has professional boiler manufacturing experience, excellent R & D team, high quality, stable and reliable use, welcome to consult!
[…] Circulating fluidized bed boiler working process: Fuel is sent into the furnace through a conveyor, mixed with air in the dense phase area, fluidized and burned. The high-temperature flue gas carries a large number of burning solid particles to scour the dilute phase area, and burns while burning. The released heat is transferred to the heating surface, the working fluid (water) is heated, and the unburned solid particles enter the separator, are collected, and are sent back to the dense phase area through the return device for cyclic combustion, thereby improving the combustion efficiency. The small solid particles of the ashes escape from the separator with the high-temperature flue gas, scour the convective heating surface and the tail heating surface, and are discharged into the atmosphere after being removed by the dust collector. […]
[…] Fluidized bed coal fired boiler has high thermal efficiency, wide load regulation range, low operating cost, and very low failure rate. […]