The thermal efficiency of an industrial boiler is a measure of how effectively the boiler converts the energy contained in the fuel into usable heat. It is typically expressed as a percentage, indicating the ratio of heat output for heating or producing steam to the energy input from the fuel consumed. This efficiency is crucial for understanding the performance of a boiler, as it directly impacts fuel consumption, operational costs, and environmental emissions.
Factors Influencing Thermal Effi...
Radiation and convection losses will vary with boiler type, size, and operating pressure. The losses are typically considered constant in BTU/hr, but become a larger percentage loss as the firing rate decreases. Boiler design factors that also impact efficiencies of the boiler are heating surface, flue gas passes, and design of the boiler and burner package.
Circulating fluidized bed (CFB) boilers are a type of combustion technology that is commonly used for power generation and industrial applications. The following are the characteristics and working principle of circulating fluidized bed boilers:
Characteristics:
High combustion efficiency: CFB boilers have high combustion efficiency due to the large surface area of the bed particles and the high turbulence created by the fluidizing air.
Fuel flexibility: CFB boilers ca...
CFB (circulating fluidized bed) coal-fired boilers have several advantages over traditional pulverized coal-fired boilers. Some of the main advantages are:
High fuel flexibility: CFB boilers can use a wide variety of fuels, including coal, biomass, and waste fuels, with varying moisture content and size. This makes them ideal for use in areas where fuel availability and quality are uncertain.
High combustion efficiency: CFB boilers can achieve high combustion efficiency, typica...
As domestic environmental protection requirements become increasingly stringent and the conflict between coal combustion and environmental protection becomes more prominent, circulating fluidized bed boilers have become widely used high-efficiency, low-pollution boiler products. The factors that affect the operating load of circulating fluidized bed boilers are the key points for guiding users' daily management operations. Therefore, this article summarizes the factors that affect the operating ...
The economizer of condensing gas-fired boiler can be installed in the flue of the current CFB boiler, to recovery the energy from the high-temperature flue gas, in order to reduce the fuel consumption. Also, the economizer helps to absorb the air pollutants such as the NOx and sulfur dioxide.
As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the NOx emission is much lower than that of pulverized coal furnace, only 200ppm.
When we talk about CFBC in the area of industrial boiler, it usually means the circulating fluidized bed combustion. The circulating fluidized bed (CFB) is a type of fluidized bed combustion that utilizes a recirculating loop for even greater efficiency of combustion.
