Biomass pellets are an emerging energy product. Many people are not familiar with it. All the plants on the earth's surface that convert solar energy into biomass energy through photosynthesis can be called biomass materials. And the biomass pellet production line is the equipment that squeezes these biomass materials into biomass pellets.
How are biomass raw materials transformed into biomass materials? What processing equipment are needed? Let's analyze it below. First, we need to understand what conditions the biomass materials need to meet in order to be transformed into biomass pellets. The biomass materials must meet the following conditions: ① The materials need to be crushed, with a crushing fineness of at least below that of rice husks. ② The materials need to be dried, with a moisture content of 10-15% being the most suitable. ③ The materials should avoid hard objects such as iron and stones as much as possible. These three conditions are essential for the pellet machine to be able to squeeze the materials into biomass pellets. Therefore, the processing of raw materials becomes particularly important. Different types of materials require corresponding processing equipment. Now let's analyze them for various types of materials.
1. Wood type.
Since this type of material has a large size, multiple processes are needed in the processing to achieve the final goal and obtain the material form that can be used to make pellets. Log
① The advanced wood splitting and cutting are required to initially break down the materials.
② The wood is then processed into wood chips.
③ The wood chips are then subjected to crushing to obtain wood shavings of the required fineness for granulation.
④ The wood chips are then dried to obtain dry materials.
<1> Since the logs are relatively complete, there are basically no hard substances such as iron and stones inside.
<2> For small-diameter logs, the first step can be omitted, and there are basically no hard substances such as iron and stones inside.
<3> Raw materials from furniture factories can skip the first step and add the process of removing nails.
<4> For the leftover materials within 5 centimeters in diameter from furniture factories, the first and second steps can be omitted, and the process of removing nails can be added, and then the fine powder can be directly produced.
<5> Wood chip raw materials from furniture factories and wood processing factories can skip the first, second, and third steps, and add the processes of removing iron and screening. Some wet leftover materials from board factories need to be dried and then can be directly used for granulation.
2. Straw.
This type of material has a relatively light texture and is relatively fluffy, occupying a large space. For example: corn straw, cotton stalks, reeds, rice straw, royal bamboo grass, lamb's tail grass, etc. In the early crushing and grinding stage, special processing equipment - Rotary Straw Cutter is needed. The feed inlet is enlarged, and the raw materials are fed in easily and efficiently, which can be crushed to the required fineness for granulation in one step, and then a drying equipment is matched for drying to obtain the dry powder materials required for granulation.
3. Rice husk.
This type of material has a relatively special shape, although the particle size is slightly larger, but its interior is hollow, which does not affect direct pressing into particles, and the rice husk is generally a product of the rice factory and has undergone drying treatment, all of which are dry materials, so no drying treatment is required. For example: rice husk, peanut shell, sunflower seed shell, etc.
4. Tree stump.
This type of material has a large size and is difficult to decompose, so special equipment is needed for crushing, and then drying for granulation can be done directly.
5. Bamboo.
The materials need to be sliced first, and then ground into fine powder. If the materials are relatively wet, they need to be dried, and then they can be used for granulation.
After the different types of materials have undergone the initial processing, they can be used for granulation. The main model of the pellet machine selected in the pellet process at present is the vertical ring die pellet machine.
After granulation, further processing is required. When the particle temperature reaches 50-60℃, it needs to be cooled to room temperature. There are two ways to cool: the most common one is natural cooling in the mesh bin. If you are in a hurry for packaging and don't want to wait for natural cooling, you can choose to equip a pellet cooler.
After cooling, the products need to be packaged with corresponding packaging equipment. There are two types: 20-50kg small bag packaging and ton bag packaging.
We hope the above explanations can be of help to you. If you would like to know more information, please feel free to contact us.