2 T/H Wood Pellet Production Line In France

The development of wood pellet energy is a strategic measure to promote energy conservation and emission reduction. It is also an effective way to protect the ecological environment and utilize forestry resources reasonably and effectively. With the advancement of global carbon emission strategies, biomass energy has received wider attention.

France has been vigorously promoting clean energy. Wood pellet fuel is an ideal fuel to replace coal and oil. It can save energy and reduce pollutant emissions. It has good environmental, economic and social benefits. It is an efficient, clean and renewable energy.

Based on the sustained local demand for high-quality wood pellets in France, this French customer seized the market opportunity and used the existing vacant factory building as a production site. It purchased wood pellet machines, crushers and other facilities from RICHI MACHINERY, and built a new biomass pellet fuel production projects.

The total investment of the 2 t/h wood pellet production line in France project is 250,000 USD, and a new 2t/h biomass pellet fuel production line will be built. After being put into operation, it will produce 5,000 tons of biomass pellet fuel annually.

• Project nature: New construction
• Project construction area: 4000m2
• Annual working days: 300 days/year
• Production system: adopt single shift 8-hour system
• Number of employees: The labor quota for this project is 5, covering production line operators and managers

The 2 t/h wood pellet production line in France project covers an area of approximately 5000m2, with a construction area of 4000m2. The factory construction area is 1200m2, the finished product warehouse area is 2500m2, and the office area is 300m2.

Two new fuel biomass pellet production lines will be built (the raw materials of the two biomass pellet production lines are pre-processed by a crushing line and a dryer), with an annual production of 5,000 tons of biomass pellet fuel. The construction content is mainly equipment installation.

A steel structure standard workshop with an area of 1,200 square meters will be built in the open space in the southwest corner of the factory area. Since the land has been leveled, the construction content mainly includes the erection of steel structure workshops and equipment installation.

This project consists of main engineering, environmental protection engineering and public engineering. The detailed engineering content is shown in the table below.

The specific product plans for this 2 t/h wood pellet production line in France project are as follows:

The main source of biomass pellets in this 2 t/h wood pellet production line in France project is wood processing residues, with a low calorific value of approximately 4300 kg/kcal.

The equipment required during the production process of this 2 t/h wood pellet production line in France project is shown in the table below.

The main raw materials of this 2 t/h wood pellet production line in France project are sawdust and waste wood scraps. The sawdust does not need to be crushed for the first time. The waste wood scraps need to be crushed.

The sawdust and the crushed waste wood scraps are dried to make the moisture content less than 5% before entering the granulator for granulation.

The granulated biomass wood pellets are transported through natural cooling so that the temperature can reach the conditions for packaging and storage, and finally package and store.

1. Crushing: Waste wood scraps are crushed through a crusher to make the particle size less than 5mm.
2. Drying: The rotary dryer of the project uses a biomass pellet hot air stove as a heat source for drying. The combustion flue gas and dust raw materials enter the drying tube together, and the moisture in the raw materials is evaporated during the high-speed hot air flow transportation. The drying tube is closely connected to the cyclone separator, and the raw materials and water vapor are separated in the cyclone separator. A small amount of dust is generated during the cyclone drying process. To make the moisture content meet the requirements for granulation (moisture content less than 5%), the dryer of this 2 t/h wood pellet line in France project is equipped with a biomass hot air stove, which can burn 200t of biomass pellets annually (the biomass pellet fuel comes from the products of this project).
3. Transportation: The raw materials pass through the auger conveyor and are input into the feed port of the granulator, and the finished products are transported to the drum screen for screening through the belt.
4. Granulation: The raw materials are fed into the wood pellet mill machine through the auger conveyor, and are extruded into finished products. The extrusion process is a physical process. No adhesive is added and no chemical reaction occurs. Except for the joints of the auger conveyor and The discharge port and the outside of the equipment are all sealed.
5. Conveying and cooling: The granulated biomass pellets are naturally cooled through transportation, so that their temperature can reach the conditions for packaging and storage, and are finally transported to the finished product warehouse.
6. Screening: The finished products are screened through a trommel screen and the qualified wood pellets products are put into storage. The unqualified products are crushed and granulated again.
7. Packaging and storage: Pack the cooled products and store them in storage.

The air pollutants in this 2 t/h wood pellet production line in France project are mainly waste gas generated during the production process: raw material storage dust, crushing dust, transportation dust, water vapor, and drying waste gas.

• Dust from storage of raw materials
  In this project, the raw materials are stacked in the workshop. The raw material workshop adopts a fully enclosed structure. The sawdust and crushed waste wood scraps are packed in bags and stacked in the warehouse.
  The waste wood scraps generate less dust due to their larger size and less dust in the yard. The customer's factory will regularly clean the raw material factory building and sprinkle water on the ground to reduce dust.
• Crush dust
  The raw materials of the 2 t/h wood pellet production line in France project (waste wood scraps) need to be crushed. The crusher has its own dust removal equipment (pulse bag dust collector, dust removal efficiency 99%, air volume 5000m3/h, operation time 8h/d), and the dust passes through the pulse bag dust collector.
  After treatment, it is discharged through a 15m high exhaust pipe. The dust generated in the crushing process is about 0.5% of the raw material usage. The amount of raw materials to be crushed is 1200t/a, so the dust generation amount is 6t/a.
  After treatment by the dust collector, the emission amount is 0.06t/a, and the emission rate is 0.025 kg/h, the emission concentration is 5mg/m3, and the amount of dust collected by the dust collector is 5.94t/a, which can be used as raw materials for further reuse.
• Conveying dust
  The raw materials of the project are transported into the dryer through the auger conveyor, and then transported to the granulator through the auger conveyor. The auger conveyor is a sealed pipe, and only a small amount of dust escapes at the feed port.
  Use the conveyor belt transports products, and the conveyor belt is equipped with a dust cover to transport the products to the finished product warehouse.
  The products are naturally cooled on the conveyor belt, and a small amount of dust escapes. The customer company needs to strengthen ventilation in the workshop, and at the same time regularly clean the factory building and sprinkle water on the floor.
• Sifting dust
  The 2 t/h wood pellet production line in France project products need to be screened through a trommel screen to separate qualified and unqualified products. Since the trommel screen screens all biomass molded pellets, and a dust cover is installed on the trommel screen, less dust is generated.
• Drying exhaust gas
  The drying equipment of the project uses a wood pellet hot air stove as a heat source for drying. The combustion flue gas and dust raw materials enter the drying tube together, and the moisture in the raw materials is evaporated during the high-speed hot air flow transportation.
  The drying tube is closely connected to the cyclone separator, and the raw materials and water vapor are separated in the cyclone separator. During the cyclone separation and drying process, a small amount of dust is generated and mixed with the combustion exhaust gas to form drying exhaust gas.
  The drying process is carried out in a closed manner. The drying exhaust gas is collected under negative pressure and enters the cyclone dust collector through the induced draft fan (air volume: 5000m3/h, operation time: 8h/d) (Efficiency calculated as 80%), and then processed by a water bath dust removal device (dust removal efficiency 75%, adding alkaline water to the pool can achieve a desulfurization effect, desulfurization efficiency 10%), and then discharged through a 15m high exhaust pipe.

The main water used in this 2 t/h wood pellet production line in France project is dust removal water. The drying waste gas of the project is processed by the cyclone dust collector and then processed by the impact water bath dust removal device to meet the emission standards.

The water bath dust removal water consumption is 2m3/d, the sewage discharge coefficient is 0.8, and the amount of wastewater generated is 1.6m3/d.

The main noise of the 2 t/h wood pellet production line in France project is: production equipment crushers, dryers, conveyor belts, granulators, drum screens and fans, etc. The noise source of a single piece of equipment is about 80-85Db(A).

• In the early procurement process of project equipment, low-noise equipment with relatively low noise should be selected and installed by professional units to control and reduce the impact of noise from the source;
• Install vibration reduction measures on the equipment to reduce the vibration by 25-30 dB (A);
• Install soundproof doors and windows in each production workshop, which can reduce 15-20 dB (A);
• The production workshop is designed according to the specifications of the mechanical processing workshop, adopts reasonable installation, and rationally arranges the noise sources to reduce noise emissions.
  After taking the above measures, the noise value at the project boundary can meet the requirements of the "Environmental Noise Emission Standard for Industrial Enterprises at the Boundary" and will have little impact on the surrounding environment.

The solid waste in this 2 t/h wood pellet production line in France project mainly includes employees’ domestic garbage, dryer (hot blast stove) ash and slag, dust collected by bag dust collector, screened defective products, particles collected by cyclone dust collector, sedimentation tank sediment, waste packaging bags and Waste engine oil.

• Domestic garbage
  The project has a capacity of 5 employees, of which 2 managers will have meals and accommodation in the factory area, and the remaining 3 employees will only have meals in the factory area and will not stay in the factory area.
  The amount of domestic waste generated by managers is calculated as 1kg/d per capita, and the amount of domestic waste produced by workers is calculated as 0.5kg/d per capita, so the amount of domestic waste generated is 1.05t/a.
• Dryer (hot blast furnace) ash and slag
  The hot blast furnace of this project uses biomass pellets as fuel. Except for the first production, which uses purchased biomass pellets, all biomass pellets produced in the factory are used as fuel. The ash content of biomass fuel is generally between 5% and 15%. The project is wood pellet fuel with a production volume of 20t/a based on 10%.
• Collected process dust
  The amount of dust produced by the crushing process of this project is 6t/a, and the collection efficiency of the bag dust collector is 99%. Therefore, the amount of dust generated by the crushing process of the project and collected by the bag dust collector is 5.94t/a.
• Screened out defective products
  The 2 t/h wood pellet production line in France project products need to be screened through a trommel screen to separate qualified products and unqualified products. The amount of unqualified products screened out by the trommel screen for the project finished products is about 40t/a, which are collected and crushed as raw materials for reuse in production.
• Particles collected by cyclone dust collector
  The particulate matter in the drying exhaust gas is mainly smoke and a small amount of dust, with a production volume of 9.62t/a. The collection efficiency of the cyclone dust collector is 80%, which is approximately 7.696 t/a.
• Sedimentation tank sediment
  The drying waste gas is collected under negative pressure, enters the cyclone dust collector through the induced draft fan, and then passes through the impact water bath dust removal device (dust removal efficiency 75%, desulfurization efficiency 30%) before being discharged. The sediment collected by the water bath dust collector is 1.443t/a.
• Waste packaging bags
  The raw material sawdust is stored in bags, which will produce a certain amount of waste packaging bags, and the amount produced is about 0. 1t/a.
• Waste hydraulic oil
  The wood fuel pellet making machine of 2 t/h wood pellet production line in France project is a hydraulic granulator. Waste hydraulic oil will be generated during the maintenance, replacement and disassembly of hydraulic equipment. By analogy, the amount generated by similar projects is about 0.1t/a. The project's waste engine oil is waste mineral oil listed in the "Hazardous Waste List" and needs to be properly collected, stored and processed.
• Waste engine oil
  Simple maintenance such as oil changes and routine maintenance of equipment in the production plant. A certain amount of discarded spare parts and oily solid waste will also be generated. By analogy, the amount generated by similar projects is about 0.1t/a.
  The project's waste engine oil is included in the "Hazardous Waste List" as waste mineral oil and needs to be properly collected, stored and processed.

More than half of the EU's renewable energy now comes from wood pellets, well ahead of solar and wind. The annual carbon emissions from burning biomass in the EU reach 400 million tons, which is approximately equal to the combined emissions of Italy and Poland. The EU has therefore become the world's largest consumer of wood pellets for energy and heating.

Wood pellets are processed from low-value wood and waste wood from the wood industry, such as branches, processing residues and forest thinning products (trees felled to regulate forest spacing), so they do not harm Europe's dense native forests and nature. , on the contrary, it is a reasonable part of the circular economy.

In France, the price of wood pellets has almost doubled to 600 euros per ton. Hungary has even banned the export of wood pellets, while Romania has imposed limits on firewood prices to prevent panic buying.

The alarming increase in the price of wood pellets has also forced some poor Europeans to turn into woodcutter, cutting down trees in forests, orchards and even city parks. This is also the main reason why the client of this project wants to build a wood pellet production line in France.

Although the output of this project is not large, it must be sufficient for self-use and sales to surrounding areas.