Cyclone Separator is a gas-solid separation device that uses the centrifugal force generated by rotating dust-containing flue gas to separate particles from airflow.

With the promotion of energy-saving and environmental protection measures, the whole power plant boiler industry encounters severe requirements. Taishan Boiler organizes the designers to conduct in-depth research and transformation over our CFB boilers. We made a great breakthrough in biomass CFB boiler cyclone separator patent.

Cyclone separator is one of the core components of biomass CFB boiler. After the biomass fuel is burnt, the fly ash passes through the cyclone separator. The solid particles are separated from the flue gas. There are some incompletely burned fuel and unreacted desulfurizer in the solid particles, which will be re-injected into the furnace for burning and desulfurization reaction. While improving the combustion efficiency, it also improves the desulfurization efficiency and reduces the amount of desulfurizer. The improvement of combustion efficiency and recycle of desulfurizer reduce the overall cost of boiler.

Improvement on Cyclone Separator of CFB Boiler
Improvement on Cyclone Separator CFB Boiler

Role of Cyclone Separator

  1. Separate the solid particles from the flue gas
  2. Realize recycled combustion of fuel and improve combustion efficiency
  3.  Realize recycling of desulfurizer and save the amount of desulfurizer
  4. Shorten the start-up time and save cost
  5. Adopting tube-lined boiler wall, the amount of refractory materials reduces, boiler weight reduces
  6. 850℃ is the best temperature for SNCR; the flue gas stays over 1.7S in the separator, and the denitration efficiency can reach 70%

Traditional CFB boiler has low separation efficiency and circulating ratio, which results in low fuel combustion efficiency and thermal efficiency. Our new CFB boiler adopts single-drum, high-temperature center cyclone separator structure (M-type layout). The furnace, separator and tail shaft are independent of each other and welded well, solving the sealing problem and also improving the combustion efficiency. At present, the efficiency of our CFB boiler is over 90%.

In the future, Taishan Group will continue to work hard and adapt to the technological development and progress of times.