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

-
On October 23, the three-day 2025 Russia Moscow Industrial Boiler and Heat Exchange Exhibition (Heatpower Expo) concluded successfully. With a meticulously planned participation strategy and a highly professional team, ZOZEN Boiler completed this overseas showcase smoothly, engaging in in-depth exchanges with customers from multiple sectors including energy, chemicals, building materials, and food, fully demonstrating the company’s comprehensive strengths in clean, high-efficiency technolo...28 Oct 2025 -
The continuous growth of the building materials industry places higher demands on thermal energy supply in production—stable steam output, efficient energy utilization, and emissions that meet environmental standards have become core criteria for selecting boiler equipment. Leveraging a deep understanding of industry-specific production needs, ZOZEN Boiler provides customized products and technical advantages to deliver reliable thermal energy support for building materials enterprises at ...21 Oct 2025 -
ZOZEN Boiler Breaks the High Humidity Biomass Combustion Challenge with DZW Series Reciprocating Grate Biomass Steam Boiler Recently, Jinzhi Morning Hong Paper Co., Ltd. (hereinafter referred to as "Morning Hong Paper") reached an important cooperation with ZOZEN Boiler, successfully introducing the DZW series reciprocating grate biomass steam boiler. This brings new impetus for efficient and green production to the company. As a leading paper product manufacturer in North China, Morning Hong P...14 Oct 2025











