Kavak odununun farklı katalizörlerle çözünürleştirilmesi ve kesikli reaktörde sıvılaştırılması

Bu çalışmada, kavak odununun, genellikle lignosellülozik materyallerin yüksek sıcaklıklardaki sulu ortamda sıvılaştırılmalarında katalizör olarak kullanılan, HCl, HCOOH ve Na2CO3 gibi bileşikler beraberinde oda sıcaklığında öğütülmesinin ve bu şekilde sağlanan boyut küçültmenin sonraki sıvılaştırma prosesindeki sıvı ürün verimine etkisinin araştırılması amaçlandı. Başlangıçtaki mekanik çözünürleştirmede mineral asidin(HCl) diğer katalizörlerden daha etkili olduğu bulundu. Sıvılaştırma prosesi üzerine odun tane boyutunun etkilerini araştırmak için yapılan deneylerde, odun çamurunun talaş ve odun tozundan daha yüksek verimle sıvılaştırılabildiği gözlendi. Odun çamurundan elde edilen yağ verimleri 300 ve 350°C'de sırası ile %48,5 ve %49,4 olmaktadır. Sıvılaştırmada daha yüksek yağ verimini önceden odun tanelerine çözücü işlemesinin sağladığı sonucuna varıldı.

Solvolysis of poplar wood with different catalysts and liquefaction in batch reactor

In this study, the effect of wet grinding and resulting size reduction at room temperature on the liquid product yield of the preceding liquefaction process of the poplar wood were investigated in the presence of HCl, HCOOH and Na2CO3, which are generally used as catalysts in the liquefaction of lignocelluloses in water at high temperatures. In the preliminary wet grinding treatment, mineral acid (HCl) was found to be more effective in solving the wood than the other catalysts. Loading wood as slurry has given liquid yields higher than those obtained with sawdust and wood powder. Oil yields obtained from slurry were 48,5% and 49,4% at 300 and 350°C respectively. It was concluded that penetration of the water into the wood particles during wet grinding might be the reason for this increment.

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