The full combustion of fuel can significantly improve energy utilization efficiency and reduce energy waste. When fuel burns in an environment with sufficient oxygen (or air) and has a sufficiently large contact area with oxygen (or air), the fuel can be completely oxidized, releasing more heat. In contrast, incomplete combustion can lead to a decrease in the amount of heat released, which not only wastes fuel but may also produce harmful gases such as carbon monoxide. If these gases are emitted into the atmosphere, they can cause environmental pollution.
To achieve full combustion of fuel, the following measures can be taken:
1, Adjust the grate structure
Biomass fuel requires an appropriate amount of air during combustion to achieve optimal combustion efficiency. The rationality of grate structure has a significant impact on the combustion efficiency of fuel. Generally speaking, for fuels with good combustion performance, a narrow grate structure should be used to increase the contact area of the fuel and promote combustion; For fuels with poor combustion performance, a wide grate should be used to increase the air circulation area and improve the combustion efficiency of the fuel.
2, Increase the intake air volume
At the lower part of the grate of biomass boilers, an air inlet should be installed to ensure sufficient air flow for the fuel. If the air intake is insufficient, it can easily lead to incomplete combustion. In practical operation, it is generally necessary to adjust the intake air volume based on the combustion performance of the fuel to achieve the best combustion effect.
3, Control the humidity and size of fuel
The humidity and particle size of biomass fuel have a significant impact on its combustion efficiency. Generally speaking, the humidity of biomass fuel should be controlled between 15% -30% to ensure the combustion stability and efficiency of the fuel; The particle size should be controlled between 5-30mm to increase its contact area with air and promote combustion.
4, Choose the appropriate fuel
There are various types of biomass fuels, such as sawdust, sawdust, straw, reeds, etc. Different types of fuels have different combustion effects on the grate. Choosing the appropriate fuel is very important, usually taking into account factors such as combustion performance, cost, environmental friendliness, and combining them with practical operational situations. When selecting biomass fuels, fuels with stable composition and good combustion performance should be chosen.
In summary, by adjusting the grate structure, appropriately increasing the air intake, controlling the humidity and size of the fuel, and selecting the appropriate fuel, we can make the combustion of biomass boiler grate fuel more complete, improve the thermal efficiency and operational stability of the boiler.
