15T/H Wood Pellet Factory in Malaysia

Project construction content

The biomass straw wood pellet factory in Malaysia project utilizes existing factory buildings and land. The project covers a total area of about 1,800 square meters. The project constructs a steel structure factory and renovates an existing steel structure factory.

The total construction area is about 1,200 square meters, including raw material warehouse, finished product warehouse, crushing process, crushing process, drying process and granulation. Process, etc. The project construction content is detailed in the table below.

Product plan and indicators

Finished product plan

The main products of this biomass straw wood pellet factory in Malaysia project are shown in the following table.

Note: 120 tons of biomass pellet fuel produced by the company are for self-use, and the remaining 29,880 tons of biomass pellet fuel are sold.

Product indicators

The basic performance requirements and auxiliary performance requirements of the biomass pellet fuel for this biomass straw wood pellet factory in Malaysia project are shown in the table below.

Auxiliary performance requirements of biomass solid pellet fuel

Main raw and auxiliary materials

The main raw and auxiliary materials of the biomass straw wood pellet factory in Malaysia project are shown in the table below.

Introduction to raw materials:

• Straw: It is the general term for the stems and leaves (ears) of mature crops. It usually refers to the remaining part of wheat, rice, corn, potatoes, rapeseed, cotton, sugarcane and other crops (usually coarse grains) after harvesting seeds. More than half of the products of crop photosynthesis are present in straw. Straw is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter, and is a multi-purpose renewable biological resource.
• Waste wood and wood scraps: It comes from waste wood generated by wood processing plants. Wood scraps containing harmful substances such as paint and glue are not purchased.
• Waste sawdust: It comes from sawdust generated by wood processing plants. Wood bran containing harmful substances such as paint and glue are not purchased.

List of main wood pellet manufacturing equipment

The main production equipment of this biomass straw wood pellet factory in Malaysia project is shown in the table below.

Public works

Water supply

The water used in this biomass straw wood pellet factory in Malaysia project is supplied by the municipal pipeline network. The water used during the operation period is mainly for employees' domestic water and water bath dust removal water replenishment.

Drainage

The rainwater and sewage of this project are separated. The rainwater is collected in the rainwater ditch in the factory area and discharged into the surrounding water channels, and finally into the local river; the dust removal wastewater of the project is recycled and not discharged.

The domestic sewage is treated in the septic tank and then enters the sewage pipeline network, and is discharged after being treated by the sewage treatment plant to meet the standards. The wastewater discharge volume is 80% of the total water consumption, and the wastewater generation volume is 232m3/a (0.928m3/d).

Power supply

The electricity used in this biomass straw wood pellet factory in Malaysia project is supplied by the municipal power grid.

Material balance

The material balance of this biomass straw wood pellet factory in Malaysia project is shown in the table below.

biomass wood pellet production Process design

1. Raw material purchase:
   Purchase raw materials (waste scraps, straw, etc.) from the market and transport them by vehicle to be temporarily stored in the raw material warehouse.
2. Pretreatment:
   Manually screen the raw materials to be crushed and pulverized to remove impurities such as iron flakes that may be mixed. The construction unit reported that the raw materials for this project do not need to be mixed with water.
3. Crushing and pulverizing:
   Since the biomass raw materials such as waste wood are large in size and cannot be directly used for molding, the crushing process mainly crushes the waste wood with large size (diameter 1-2 meters, moisture content 30%-40%) into small particles (diameter <10cm). The pulverizing process mainly crushes the small particles further. Wood chips do not need to be crushed.
   The particle size of the crushed materials is 0.5-2cm. The material conveyor belt before crushing and pulverizing has a magnetic screening function to further remove impurities such as iron in the crushed materials. The dust generated by the crusher feed port, discharge port, crushing process, and conveyor belt discharge port is collected by cyclone dust collector + bag dust collector.
   The designed production capacity of the crushing and pulverizing process equipment of this project is 4,000 tons/month, and the designed production capacity of biomass pellets of the biomass straw wood pellet factory in Malaysia project is 2,500 tons/month. The production capacity of the crushing process of the project is 1.6 times the designed production capacity of biomass pellets.
4. Drying and cooling:
   Since the moisture content of some raw materials cannot meet the requirements, it is necessary to use hot air furnace combustion flue gas for direct drying. This process is mainly caused by equipment operation noise and combustion exhaust gas generated by hot air furnace combustion.
   The dried material is cooled by induced draft fan and then enters the next process. The dust and combustion exhaust gas generated during the drying and cooling process are discharged through a 18m high exhaust pipe after two-stage cyclone dust removal + water bath dust removal.
5. Granulation:
   The dry material is transported to the silo of the wood pellet mill machine through the feed auger, and the excess material is transported back to the feed port through the belt. The biomass pellet machine squeezes the dry material into rod-shaped particles through extrusion molding. During the extrusion molding process, the friction of the material generates heat. During the extrusion molding process, some water will evaporate, making the raw material ≤13%.
   The extrusion temperature is about 70-90℃, which causes the lignin contained in the raw material to soften and increase the adhesion. The softened lignin and the cellulose of the biomass work together to gradually shape the biomass. After a certain period of time, it is extruded in a cylindrical shape. The rotating cutter cuts the material and sends it out through the discharge port.
   The whole process is physical extrusion molding without adding any adhesive. After the finished product comes out of the discharge port, it is naturally cooled and the unqualified products with a particle size of less than 8mm are screened out. The qualified products are packaged and sent to the finished product warehouse.
   Unqualified products with particle size that do not meet the requirements can be used as raw materials, reprocessed, and recycled. The extrusion molding machine is fully enclosed during the pelletizing process.
6. Packaging and warehousing:
   Qualified products from the wood biomass pellet machine are mechanically packaged and sealed, and the packaged products are manually put into the warehouse.

Plane layout

The entrance of the plant area of this wood pellet factory in Malaysia project is located on the southeast side of the plant area. From the perspective of the plan layout, the plant area is divided into 1# production workshop, 2# workshop (raw material warehouse, finished product area), office and living area from south to north.

The main layout of 1# production workshop is crushing area, pulverizing area, drying area, pelletizing area, and packaging area. The main layout of 2# workshop is raw material warehouse, finished product area, general solid waste temporary storage area, and hazardous waste temporary storage room.

The exhaust pipe of the project combustion waste gas is set in the center, and each production device is arranged on the west side, as far away as possible from the 10Kv power line on the upper corner of the east side of the plant area and the living office building and residential area near the south side of the plant boundary.

According to the general plan layout of the plant building, the entire production process of this wood pellet factory in Malaysia project is completed in the workshop, forming an independent assembly line. The plan layout of the project has achieved clear functional zoning of the plant area, so that the general plan layout of the plant area can save land.

According to the actual production needs, the production links in each production workshop of the project are arranged in different areas, so that each production process unit in each production and processing area is streamlined, so that the logistics are smooth and the flow of people is short, which meets the needs of the process flow. Therefore, the project layout is reasonable.

What are the requirements for the plant in Malaysia to build a wood pellet plant?

Site selection requirements

When building a wood pellet plant in Malaysia, the plant should be located in an area with a good ambient air pollution index, and should be away from pollution sources such as industrial areas, urban traffic arteries, and garbage treatment plants. At the same time, there should be sufficient green belts and fire prevention facilities around the plant to improve the safety factor.

Area requirements

The plant area of the wood pellet production line should be determined according to the production capacity. In order to ensure production efficiency and safety, it is recommended that the area is not less than 1,000 square meters. In addition, functional areas such as production areas, warehouse areas, and office areas should be clearly divided and relatively independent.

Plant structure requirements

In order to meet the needs of production equipment, the plant structure of the wood pellet factory in Malaysia should be strong and have good ventilation, exhaust and fire prevention facilities. The production area should adopt dust-proof and sound-proof equipment to improve the comfort and production efficiency of the production workshop.

Safety requirements

The safety requirements of the wood pellet plant are very high, and it should have safety measures such as lightning protection, explosion protection, fire protection and death protection. Inside the plant, it should be equipped with a complete safety monitoring system, such as monitoring, alarms, etc., as well as escape routes and emergency evacuation facilities.

In general, the requirements for wood pellet factory construction in Malaysia are very strict, but as long as it is built in accordance with the specifications, the production efficiency and safety factor can be improved.

With the gradual expansion of the biomass pellet market, the development prospects of biomass pellet plants are getting better and better, driving the development of the new energy field.