C. F. Nielsen - Miscanthus Briquetting 800-1100 kg/hour
From Agri Products Briquetting
Briquetting Plant for production of 800 - 1100 kg/hour of consumer or industrial briquettes from miscanthus based on an actual installation at our customer Scea du Courbouet in France. We recommend a single line with one BP 5500 HD briquetting press with a 6-10 m3 dosing silo or in combination with a large silo including automatic discharge system.
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A forage harvester was used in this case, which means the raw material is collected prechrushed from the field, but the miscanthus will in some cases be baled in the field for easier transport, handling and storing. However a bale splitter and mixer will then have to be incorporated in the project.
Requirements for raw material
- Particles need to have a length of 10-20 mm, A hammer mill with 10-15 mm screen size will give the requested particle size.
- Moisture content of the raw material should preferably be in the range 10–13%. This is normally possible to achieve without drying based on timely harvesting.
- Raw material must be suitable for briquetting and tested if any doubt.
Testing of raw material
We are ready to perform a test briquetting based on you supplying us actual dry raw material, with correct particle size and moisture content. The test will show the expected quality of the final product and let us determine, whether any additives need to be added. Get Test Report
Storage facility for dry raw material
Normally we can combine our solution with your existing or planned storage solution, whether this is a large silo, a bunker or similar.
Briquetting control system
A frequency controlled dosing screw feeds an exact amount the raw material into the press in a steady flow. Level switches in the silo signals the conveyor when refilling of the silo is required. All vital functions of the press is controlled by the advanced and operator-friendly BBCS or ABCS Control System including a Siemens PLC. This system is capable of keeping the set capacity within +/- 50 kg/hour even with fluctuating density of the raw material.
Preferred type and dimensions of briquettes
The BP 5500 HD is normally producing standard Ø75 mm. We do not recommend to produce square briquettes from any straw products.
Transportation, cooling and shortening of the briquettes
The briquettes are produced in a continuous string. A briquette breaker is installed at the end of the 20-30 m long cooling line to shorten the briquettes in suitable lengths for packaging in cardboard boxes or foil wrapped with 7 or 8 briquettes in each 10 kg package. The long cooling line is important to allow the briquette string to cool down and harden before being handled in the breaker and packaging system if installed. Outdoor cooling lines have to be covered.
Packaging solution
From the saw the briquettes are conveyed to the shrink packaging line. Broken and too short briquettes are automatically ejected from the line. from the line. A label is normally inserted just before the package enters the shrink wrapper.
We generally see 3 different options.
- Manual sorting and packaging in cardboard boxes Recommended for the smaller plant with only 1 or 2 shift operation
- Manual sorting, semiautomatic packaging and foil wrapping. Followed by manual palletizing of the briquettes
- Automatic sorting and packaging. Requires high quality briquettes and a sorting system inserted after the saw or breaker.
Utilization of miscanthus briquettes
Briquettes made from miscanthus are CO2 neutral and suitable for woodstoves and open fireplaces as well as for burning in industrial boilers at power plants and heating plants.
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