Mısır saplarının peletlenmesi ve pelet özelliklerinin belirlenmesi

Bu çalışmada, tarımsal üretim alanlarından toplanan mısır saplarının peletlenmesi ve elde edilen peletlerin özelliklerinin belirlenmesi amaçlanmıştır. Çalışmada, 6 mm elek delik çapına sahip çekiçli değirmende öğütülmüş, nem içeriği % 14.75, materyal yığın yoğunluğu 120 kg m-3 ve geometrik ortalama çapı 1.076 mm olan mısır sapları, 15 kW gücünde ve 8 mm kalıp delik çapına sahip, 70-100 kg h-1 üretim kapasitesindeki pelet makinesinde peletlenmiştir. Peletlerin kalite göstergeleri olarak pelet yığın ve parça yoğunluğu, nem içeriği, mekanik dayanıklılık direnci, basınç direnci ve nem alma durumu belirlenmiştir. Ayrıca, peletleme makinesinin kapasitesi ve enerji tüketim değerleri ölçülmüştür. Çalışma sonunda, peletlerin ortalama çapı 8.27 mm, uzunluğu 32.19 mm ve kütlesi ise 2.17 g olarak ölçülmüştür. Fiziksel testler sonunda peletlerin oldukça sağlam yapıda oldukları görülmüştür. Peletlerin yığın yoğunluğu 715 kg m-3, parça yoğunluğu 1264 kg m-3, nem içeriği % 6.24, mekanik dayanıklılık direnci % 96.94, basınç direnci 3060 N ve nem alma durumu % 11.53 olarak bulunmuştur. Peletleme makinesinin üretim kapasitesi 66 kg h-1 ve enerji tüketim değeri 15.14 kWh olarak belirlenmiştir.

Anahtar Kelimeler:

Biyokütle, Mısır sapı, Pelet

Pelleting of corn stalk and determination of pellet properties

Corn stalks have the potential for energy use in the form of pellets. The aim of this study was to pelleting of corn stalks collected from agricultural production areas and determination of pellet properties. In the experiments, pelleting machine with 15 kW motor power, 8 mm die diameter and 70-100 kg h-1 production capacity for pelleting of corn stalks was used. The moisture content, bulk density and geometric mean diameter of ground corn stalks were 14.75 %, 120 kg m-3 and 1.076 mm, respectively. Pellet physical properties such as pellet bulk density, particle density, moisture content, mechanical durability, compressive resistance and moisture sorption were determined. Also, values of capacity and energy consumption of machines were measured. At the end of study, the average diameter, length and mass of the pellets were measured as 8.27 mm, 32.19 mm and 2.17 g, respectively. The result of physical tests showed that the produced pellets were quite strong due to mechanical durability, compressive resistance, and moisture sorption. The moisture content, bulk density, particle density, compressive resistance and moisture sorption of pellets were founded as 6.24%, 715 kg m⁻³, 1256 kg m⁻³, 3060 N and 11.53%, respectively. The average production capacity and energy consumption of pelleting machine were found 66 kg h-¹ and 15.14 kWh, respectively.

Keywords:

Biomass, pellet, Corn stalk,

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