New Insights in the Ash Melting Behavior and Improvement of Biomass Energy Pellets Using Flour Bond  

作　　者：J. van Soest J. Renirie S. Moelchand A. van der Meijden J. Plijter 

机构地区：[1]Department of Research and Development, Meneba B. V., Brielselaan 115, 3081 AB Rotterdam, The Netherlands

出　　处：《Journal of Energy and Power Engineering》2011年第8期685-691,共7页能源与动力工程（美国大卫英文）

摘　　要：New insight was obtained in the effect of ash composition on the ash melting behavior of biomass products. It was shown that there is a good correlation between the amounts of calcium （Ca）, silicon （Si） and potassium （K） of the ash and the ash melting temperature （Tmelt） of bio-energy products like wood, agro and sludge pellets （n = 164）. Using PCA and linear regression analyses a good prediction of the Tmelt can be obtained by using an easy to use formula： Ln [Tmelt] = 7.24 - 0.33 × Si - 0. 70 × K ＋ 1.28 × K × Ca （variance accounted for is 72%）. The new formula give much better predictions of the ash Tmelt of wood pellets and other solid bio-energy or biofuel products than previous fits. As expected Ca plays an important positive role. K and Si sink the Tmelt. Other metals play a less dominant role, such as iron （Fe）, aluminium （Al） and magnesium （Mg）. The new insight was put into practice by showing that by adding FlourBond, a pressing aid high in Ca, the Tmelt of wood pellet ash can be increased. It is envisaged that an elevated ash Tmelt reduces the risk of slagging of solid biofuels.

关 键 词：PELLETS biomass production biomass characteristics MELTING ASH slagging. 

分 类 号：TK[动力工程及工程热物理]