zozen boiler
Home Service FAQs FAQ of circulating fluidized bed boilers What is the function of a separator in the CFB boiler?

What is the function of a separator in the CFB boiler?

06 May 2022

Circulating fluidized bed boiler (CFB) is a fluidized combustion boiler. Its main structure includes combustion chamber and circulating furnace. It has many advantages such as high thermal efficiency and low pollution, and is especially suitable for inferior coal. During use, all parts of the boiler are playing their respective roles. Here, we will focus on the function of the separator of circulating fluidized bed boiler.

 

The working principle of circulating fluidized bed boiler separator

Separator is one of the three core components of circulating fluidized bed boiler. Its working principle is that the dusty flue gas coming out of the furnace outlet is introduced along the tangential direction from the side of the cylinder, and the flue gas flow rate increases. The airflow is introduced along the center line at the top of the cylinder, and the flue gas flow rate increases. The airflow rotates downward along the central cylinder at the top of the cylinder, and turns upward before reaching the end of the cone, and the clean flue gas is discharged from the cyclone separator through the central cylinder.

 

Function of separator in the CFB boiler

  1. The separator of circulating fluidized bed boiler is mainly used to separate the dust particles in the flue gas by the centrifugal force produced by the rotating dusty flue gas.
  2. The efficiency of the separator determines the circulation ratio. When the circulation ratio is low, the change of separator efficiency has little effect on the circulation ratio. When the separator efficiency is high, a little change in the separator efficiency will cause a great change in the circulation ratio.
  3. In the high-rate circulating fluidized bed boiler, the change of separator efficiency has a greater impact on the fly ash concentration. Therefore, it is easy to control the steam temperature by using low rate circulation. The superheater is aimed at the existence of condensed water, and the way of temperature adjustment is nothing more than setting a desuperheater between the secondary superheaters, using a surface-reduction type desuperheater, using feedwater spray, or using self-made condensed water.
Related news View More
  • ZOZEN Boiler Empowers Green and High-Quality Industrial Development in Liaoning
    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
  • ZOZEN Boiler in Shandong: Innovative Boiler Models Empower Diverse Production
    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
  • ZOZEN Gas Water Tube Boilers Make a Strong Entrance on Cable Industry
    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

Find the Right Boiler For You

Name *

Email *

WhatsApp/WeChat

Products

Power/Capacity