Production of charcoal from greenhouse vegetable waste, thus avoiding the treatment of OGW as waste. The solution focuses on the use of the material as a raw material, suitable for the production of a solid biofuel. All this, aligned with the principles of Circular Economy and with the European, state and regional legislation.
The process can be summarized as follows:
- Preparation and pre-conditioning of the OGW to transform it into a biomass with the physical characteristics and properties required to feed the carbonization process. In this phase a basic physical process of conditioning the material consisting of a reduction in size by grinding or cutting is carried out.
- Process of carbonization of biomass of greenhouse vegetable waste (OGW) in a high temperature furnace (700 – 750 ºC approx.) In the absence of oxygen, resulting in the production of charcoal and a gas with a high calorific value. The technology used for the process is tested and scaled to industrial level.
- Post conditioning of coal: After cooling, the coal is led to a density separator by air that allows the removal of stones and other materials.
- Blending: once cooled and purified, the carbonaceous product obtained in the carbonization process is mixed with other biomass (i.e. olive bone)
- Briquetted: process of pressing and compacting to increase density and form briquettes generally of cylindrical format.
More details can be found here