Enerji bitkisi olarak farklı kamış türlerinin briketlenmesi üzerine bir araştırma

Bu araştırmada, enerji bitkisi olarak dev kamış (Arundo donax) ve sazlık kamış (Phragmites australis) bitkilerinin briketlenmesi ve briketlerin fiziksel özelliklerinin belirlenmesi amaçlanmıştır. Materyallerin briketlenmesi için 15 kW gücünde konik kalıplı ve kalıp ısıtmalı konik helezon tip briketleme makinesi kullanılmıştır. Briketlerin fiziksel özellikleri ile ilgili olarak yoğunluk, dayanıklılık direnci, kırılma direnci, su alma direnci, nem içeriği ve eşdeğer nem içeriği değerleri belirlenmiştir. Ayrıca çalışmada, briketlerin ısıl değerleri, briketleme makinesinin kapasitesi ve özgül enerji tüketimi belirlenmiştir.Çalışma sonunda ortalama 57 mm çapında ve 25 mm merkez delikli yüzeyi karbonize olmuş silindirik briketler elde edilmiştir. Fiziksel testler sonunda briketlerin yüksek yoğunluk, dayanıklılık direnci, kırılma direnci, su alma direnci ve eşdeğer nem içeriklerinden dolayı oldukça sağlam yapıda oldukları belirlenmiştir. Dev kamış ve sazlık kamış bitkileri briketlerinin yoğunlukları sırası ile ortalama 1150 kg m-3 ve 1017 kg m-3, alt ısıl değerleri 17.99 MJ kg-1 ve 17.84 MJ kg-1 makine kapasitesi 170 kg h-1 ve 110 kg h-1, makinenin özgül enerji tüketimi ise 0.0753 kWh kg-1 ve 0.0841 kWh kg-1 bulunmuştur.

Anahtar Kelimeler:

Biyokütle enerjisi, Enerji bitkisi, Briketleme

A study on briquetting of different reed species as an energy crop

This study aimed at briquetting of giant reed (Arundo donax) and common reed (Phragmites australis) as an energy crop and determination of its physical properties. In the experiments, a conical screw type briquetting machine with tapered die and die-heater was used for briquetting of raw materials and its power is 15 kW. Physical properties of briquettes such as briquette density, durability index, shatter index, water resistance, moisture content and equivalent humidity content were determined. In this study, lower heating value of briquettes, capacity and specific energy consumption of briquetting machine were also determined.During the briquetting process, 57 mm diameter briquettes with a central hole of 25 mm were produced and surface of briquette was partially carbonized due to heating system affecting the surface temperature. The result of physical tests showed that the produced giant and common reed briquettes were quite strong due to high density, tumbler index, shatter index, water resistance and equivalent humidity content. The average densities and the lower heating values of giant and common reed briquettes produced was 1150 kg m-3 and 1017 kg m-3, and 17.99 MJ kg-1 and 17.84 MJ kg-1, respectively. Average briquette production capacity and specific energy consumption of briquetting machine for giant and common reed briquettes were found to be 170 kg h-1 and 110 kg h-1, and 0.0753 kWh kg-1 and 0.0841 kWh kg-1, respectively.

Keywords:

Biomass energy, Energy crop, Briquetting,

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