کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
143931 438916 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison and explanation of predictive capability of pellet quality metrics based on fundamental mechanical properties of ground willow and switchgrass
ترجمه فارسی عنوان
مقایسه و توضیح قابلیت پیش بینی معیارهای کیفی پلت بر اساس ویژگی های مکانیکی پایه ای از اراضی خاکی و چمن زنی
کلمات کلیدی
گلوله سازی، آزمون فشاری هیدرواستاتیک سه تایی، قدرت پلت، دوام پلت، تستر سه تایی مکعبی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Physical, mechanical properties of ground willow and pellet qualities were measured.
• High bulk modulus value was attributed to higher level of lignin present in willow.
• Compression index correlated with ground willow’s predominant plastic deformation.
• Bulk modulus correlated with ground switchgrass’ predominant elastic deformation.
• Explained why ground biomass’ mechanical properties correlated with pellet quality.

Willow is a light-weight and uniform-grained hardwood, which is a promising bioenergy crop. In this study, physical and mechanical properties of ground willow and quality of willow pellets were determined and compared with already published properties of more commonly used bioenergy crop, i.e., switchgrass. Rational explanations were provided for why certain mechanical properties were correlated well with pellet qualities. To that end, willow was ground with two different screen sizes (3.175 mm and 6.350 mm) and conditioned at two moisture contents (17.5% and 20.0% w.b.). The physical and mechanical properties of ground willow and pellet qualities were determined. Ground willow and switchgrass exhibited similar trends of mechanical properties, however, the magnitudes were different. For ground willow, compression index correlated well with strength of willow pellets, however, bulk modulus and spring-back index showed high correlations in case of switchgrass. This could be an attribute of different physical properties, i.e., particles size distribution, bulk density, and particle density, and chemical compositions. Higher levels of lignin present in willow than switchgrass might produce significant effect of resistance to compressibility. Ground willow underwent plastic deformation, which resulted in a high correlation to compression index. Ground switchgrass was dominated by elastic responses thus highly correlated to bulk modulus and spring-back index.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advanced Powder Technology - Volume 27, Issue 4, July 2016, Pages 1411–1417
نویسندگان
, , ,