It is obvious that more and more people begin to use biomass pellets as fuels rather than burning fuel wood directly, it has some reasons like the following:
- Low thermal efficiency. Burning fuel wood directly has lower thermal efficiency, only 10 to 15 percent, which is the great waste of the resource.
- Reduce the quality of ecological environment. Excessive cutting fuel wood will destroy the land vegetation, reduce the ability of water conservation, accelerate soil erosion, resulting in the deterioration of the ecological environment.
- Appropriation of labour power. It takes a lot of time and manpower to collect fuel woods, which leads to labor occupation.
- Destroy forest and vegetation. In order to acquire more resource of fuel wood, there may have the phenomenon of wanton felling of trees and deforestation, especially some rare trees and breeds with higher economic value will also be destroyed.
- Security risks will happen. It is easy to have unsafe hidden dangers like fire and sickness etc. if there are fuel woods everywhere. What’s more, it may make it dirty for our living condition.
Why biomass pellets produced by pellet machines can be burned
From the above explain, we know that burning fuel wood directly have some bad results, so it is wise to burn biomass pellets, but why the biomass pellets produced by pellet machine can be burned well? What’s the advantage of biomass pellets? Now let’s talk about this.
Reasons why biomass pellets can be burned
- The content of carbon is low, and the highest carbon content is about 50 percent.
- Hydrogen content is high, the volatilization is obviously more, most of the carbon and hydrogen in biomass are combined to form low molecular hydrocarbons, which decompose and release volatile matter after thermal decomposition at a certain temperature, so biomass fuel is easy to ignite.
- Higher oxygen content of biomass pellets than that of coal, which can make biomass pellets be burned sufficiently.
- It is obviously that density of biomass pellets is lower than coal, loose texture, easy to burn out, ash carbon residue lower than coal ash carbon content.
- Low content of sulphur, most of the biomass fuel pellets have the sulphur content lower than 0.12 percent, so there is no need to set up the desulphurization device.
- The emission of CO2 is quite low, nearly can be thought no emission. And the ash after burning biomass pellets can be used to make chemical fertilizers.
- Biomass pellets can realize biomass waste reduction, innocuity and utilization.
Advantages of biomass pellets
- The wood pellets made by pellet machine have smooth and even surface, and also good appearance, so that they have high quality.
- The pellets are smooth and even, of high standard hardness and heat value.
- The wood pellets made by the pellet machine have good shape, high hardness, high density (1100kg/m3), and good durability, can meet storing and transporting requirements.
- Without dust ,smokeless, cleanliness. no CO, pollution-free.
- High density and heat value, easy burn, low cost, convenient use.
- Biomass pellets have a high calorific value, ranging from 3900-4800 kilocalorie/kg. The carbonized pellets’ calorific value even can reach to 7000-8000 kilocalorie/kg.
- Nearly no harmful gas generated during the burning of biomass pellets, so it’s eco-friendly.
- Biomass pellets are clean and hygiene fuel, and the feeding is convenient, which has largely decreased the labor intensity of the workers. This advantage greatly improves the work environment and will lower the enterprise cost on employing in a certain degree.
