Impact of grinding coconut shell and agglomeration pressure on quality parameters of briquette

إنجليزي. In Poland, biomass is still considered as the basic source of renewable energy. Energy from biomass accounts for 15 % of global energy consumption, whi le in developing countries this share is higher. Th e main advantage of biomass is lower emissions of sulphur dioxide during combustion compared to fossil fuels. The main sources of biomass for production of low-proce ssed solid biofuels, such as bales or chips and hig h processed pellets or briquettes, are plantations of energy plants. Energy plant species, possible to u se as a raw material for the production of biofuels, are plants characterized by a high annual growth, resistance to diseases and pests, small habitat requirements and adaptatio n to the Polish climatic conditions. The paper pres ents the physico-chemical properties of coconut shells in te rms of their energetic use. The results obtained ar e: humidity (9.4 %), calorific value (17308.68 J· g -1 ), low ash content (0.66 %) and volatile content (7 7.7 %) are comparable to those of biofuels available on the market. The w ork was also carried out to assess the effect of th e shredding degree and the applied agglomeration pressure in th e briquetting process on the quality characteristic s of the obtained briquettes. For briquetting the raw materi als the POR ECOMEC Junior Press was used. Tests wer e conducted for particulate matter on 8 and 12 mm sie ves and for agglomerate pressure of 37 and 47 MPa. The obtained results showed that proper granulation of the raw material and application of appropriate agg lomeration pressure improve the qualities of the briquettes.

إنجليزي. pressure agglomeration, grinding, durability, briquette

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1884-1889