5-7tph wood logs pelleting line

Introduction to Process:

Debarking Process

Raw material debarking can improve heat value of finished pellets, reduce ash residue after combustion of finished pellets and reduce emissions.

Debarking Machine: LYMB-1200, length is12m, power is 30kw, disigned capacity is 10tph.

Chipping Process

The chipping process of the log pellet complete project is to process the wood logs into wood chips, the size is 20-30mm, the thickness is about 5-10mm, and then enter the processing of the following sections.

Chipping Machine: Chipper LYGX218D,  power of main motor is 132kw, feeding roller is 4kw, oil pump is 0.55kw, designed capacity is 38m³.

Grinding Process

This process is without dust discharge. After grinding by hammer mill, the sawdust is pneumatic transported out of the fan by negative pressure suction.The hammer mill is of tear circle structure with high grinding efficiency.The rotor can be operated in a positive and negative way to increase the service life of the hammer blade.The motor adopts the direct transmission of motor.

Grinding Machine(2sets): MFSP68*120, power is 160kw, capacity is 6-8t /H (moisture of raw material is 40% ).

Drying Process

Three - layer drum dryer, after drying wood chip moisture in about 13-18%.

Drying equipment: LYHG60, drum diameter 3.45m, length 11.6m, power 22kw, design with 6T/H output(moisture of raw material is 40% )

Pelleting Process

The diameter of biomass pellets is 6-10mm, and the biomass pellets have the characteristics of high calorific value, no pollution and low ash content, which can be widely used in biomass power plants, biomass steam boilers, household fireplaces, drying stove and biomass gasifier,etc.

Pelleting Machine(6sets): MZLH420, power of main motor is 90kw, power of forced feeder is 0.75kw, the designed capacity is 1 ton per unit.

Cooling & Bagging Process

The cooling process of the log pellet complete project use cooler to reduce the pellets temperature and decrease pellets moisture, low energy consumption, easy operation, high level of automation, after cooling through the cooler, the pellets temperature generally is not higher than room temperature 5℃, the moisture is about 8-10%, the density of pellets is 650-750 kg/m³.

Packing scale: according to the local sales demand of the customer, choose the suitable packing scale to facilitate the customer to sell products. There are usually two specifications: small bag and ton bag. The packing specification of small bag packaging scale is 20-50kg/ bag, and the ton bag scale is 500-1000kg/ bag.

Cooling machine: MKLB4, the volume of the cooling chamber is 4m³, and the designed capacity is 5-7 tons per hour.

Packing machine: MDBLY-K, the packing specification is 20-50kg/ bag, and the packing speed is 3-5 bags/minute.

According to the needs of different customers, the scheme can be optimized:

1. If necessary, buffer bins can be added between each section to ｒｅｐｌａｃｅ the storage yard. The advantage is that it can improve the automation degree of production line and reduce dust pollution in the workshop; The disadvantage is that it will increase the construction cost of the production line, and because the bulk density of materials after crushing is very light, it is easy to bridge in the bins and material does not ｄｒｏｐ.

2. The packaging equipment can be adjusted according to customers' requirements for finished product packaging. It can also be stored in bulk or stored into silos.