What are the influence factors of CFB boiler bed temperature
Circulating Fluidised Bed(CFB) boiler is becoming more and more popular in the world because of the characteristics of fuel flexibility,high combustion efficiency and low pollution emissions.The CFB boiler bed temperature has a close relationship with the boiler’s stable combustion and thermal efficiency,so we should actively find out the influence factors of CFB boiler bed temperature,in this text,this will be introduced for your reference.
The influence of coal quality
Coal moisture:when the fuel moisture increases,due to the latent heat of vaporization absorbed by the steam increases,the bed temperature will significantly drops,so a lot of coal is needed to stabilize the bed temperature.Therefore,the moisture in coal should not exceed 9%,otherwise,it will cause the bed temperature drops,reducing the combustion efficiency.
Calorific value of coal:the higher the lower heating value,the higher the theoretical combustion temperature,so the circulating fluidized bed boiler temperature is also higher.
Coal ash content:if the ash content in the fuel is higher, more coal is needed to maintain the constant bed temperature,more fly ash will be produced.Therefore,the more the fuel ash content,the lower the bed temperature.
The influence of coal amount
In the use process of the circulating fluidized bed boiler,the amount of coal has a direct impact on the bed temperature,the more the coal,the high the bed temperature,otherwise,the bed temperature will reduces,the coal amount and bed temperature is a linear relationship.So we should guarantee the coal amount to keep the bed temperature stability.
If you want to know more about CFB boiler,please feel free to browse our website or contact us,ZG,as a professional CFB boiler manufacturer,will provide the reliable products and practical solutions for you!
