What is the difference between fluidized bed boiler and common boiler?
Different combustion modes are the core difference between fluidized bed boiler and common boiler.
Fluidized bed boiler adopts fluidized combustion mode. After the fuel is crushed to a proper particle size by a crusher, it is fed from the upper part of the air distribution plate of the combustion chamber by a coal feeder, mixed with the hot boiling materials in the combustion chamber, heated rapidly, and the fuel quickly catches fire and burns. Under the action of high air velocity, a large number of solid particles are carried out of the combustion chamber. After being separated by a gas-solid separator, the separated materials are returned to the combustion chamber by a material return device to continue to participate in combustion.
Common boilers are fired by layers. The fuel enters the chain grate through the coal hopper, and enters the furnace with the movement of the chain grate to start its combustion process. Burned coal cinders are discharged to the slag discharge well at the tail of the chain grate with the movement of the chain grate. At the same time, there is air cooling under the chain, which can protect the grate from burning.
Structural and system differences between fluidized bed boiler and common boiler.
The difference of combustion mode leads to the difference of structure between fluidized bed boiler and common boiler. The main structure of circulating fluidized bed boiler includes combustion chamber and circulating furnace, starting burner, air chamber, air distribution device, furnace, gas-solid separator, material return device, drum, downcomer, water wall, superheater, economizer, air preheater, etc. In addition, the circulating fluidized bed boiler mainly includes blower, induced draft fan, return fan, crusher, coal feeder, slag cooler, dust collector, desulfurization and denitrification equipment, chimney, etc.
Common boilers include chain grate, water wall, steam drum, downcomer, superheater, etc. The system has no return fan and crusher.
-
DHX coal-fired CFB (circulating fluidized bed) steam boilerLive Chat20-75 t/h1.25-1.6 MPa
-
SHX coal-fired CFB (circulating fluidized bed) hot water boilerLive Chat7-17.5 MW1-1.6 MPa
-
SZL series coal-fired steam boilerLive Chat6-35 t/h1-2.5 MPa
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat
-
In recent years, green manufacturing and high-quality development have become the main themes of China’s industrial transformation and upgrading. As a leading domestic supplier of high-efficiency and clean boilers, ZOZEN Boiler, backed by profound technical expertise and extensive industry experience, has been repeatedly selected for key projects across Liaoning Province, continuously injecting robust momentum and green energy into local industries. ZOZEN’s Boiler Solutions Serve ...05 Aug 2025
-
On the thriving industrial land of Shandong, the continuous demand for thermal energy supply from enterprises drives the transformation of the boiler industry. With profound technical expertise and ongoing innovation, ZOZEN Boiler remains at the forefront of providing high-quality, adaptable boiler models for various industries. ZOZEN Boiler Provides Tailored Boiler Solutions for Shandong Industries Looking back, the cooperation projects with Shandong Luhua Group and Shandong...29 Jul 2025
-
In the industrial zone of Wen’an County, Xinghua Cable Co., Ltd. is making steady progress on its project with an annual production capacity of 11 million meters of wires, cables, and accessories, backed by an investment of RMB 520 million. Upon completion, the project is expected to create over 150 jobs and generate annual sales revenue of RMB 800 million, demonstrating promising prospects. As a key supplier of thermal energy equipment, ZOZEN Boiler is quietly supporting the development o...22 Jul 2025