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How does the moisture content of energy-saving biomass burning pellets affect their combustion performance, and how to control the appropriate moisture content?

Publish Time: 2024-08-10
The moisture content of energy-saving biomass burning pellets has a significant impact on their combustion performance. First, when the moisture content is too high, the calorific value of the burning pellets will be reduced. This is because the evaporation of water requires a large amount of heat, which will be consumed during the combustion process, resulting in a reduction in the amount of energy that can be used for actual combustion. For example, energy that could have been efficiently converted into heat energy is used to evaporate water, which reduces the combustion efficiency. In addition, high moisture content may also lead to unstable combustion, with flame flickering or even extinguishing. In addition, excessive moisture will increase the amount of smoke generated by combustion, which may contain more water vapor, causing a certain burden on the smoke exhaust system and may affect the service life of the equipment.

On the contrary, when the moisture content of energy-saving biomass burning pellets is too low, although it is beneficial to improve the calorific value and combustion stability to a certain extent, it may increase the generation of dust. During production and transportation, too low moisture content may also cause the pellets to break easily, produce more powder, and affect product quality.

In order to control the appropriate moisture content, some measures can be taken during the production process. First, during the raw material collection stage, it is necessary to avoid long-term exposure of the raw materials to a humid environment. For some biomass raw materials with high water content, such as fresh straw, they can be properly dried or dried. When drying, the temperature and time should be controlled to avoid over-drying that causes raw material deterioration or energy waste. At the same time, during the production process, the pellets should be stored and packaged reasonably to prevent them from absorbing moisture from the air. Sealed packaging can be used, and desiccant can be placed in the packaging. In addition, the production process can be optimized, such as adjusting the compression ratio, so that the pellets can better discharge excess moisture during the production process. Through the comprehensive application of these methods, the moisture content of energy-saving biomass burning pellets can be effectively controlled to achieve the best combustion performance requirements, improve energy efficiency and reduce adverse effects on the environment.
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