Drying of granular cellulosic fibers by-products: Material characterization, kinetics modeling, and costs analysis towards process optimization

被引：5

作者：

Souza T.C.A. ^{[1
]}

Araújo J.A. ^{[2
]}

Perazzini M.T.B. ^{[1
]}

Perazzini H. ^{[1
]}

机构：

[1] Institute of Natural Resources, Federal University of Itajubá, Itajubá, MG

[2] Granutec Tecnologia em Granulados, Aracruz, ES

来源：

Bioresource Technology Reports | 2021年 / 15卷

关键词：

Mathematical modeling; Optimization; Paper industry; Particulate systems; Process design; Waste valorization;

D O I：

10.1016/j.biteb.2021.100820

中图分类号：

学科分类号：

摘要：

The objective of this work was to study the drying kinetics of granular cellulosic fibers to provide qualitative and quantitative results for preliminary analysis of dryer design and capital costs estimation towards process optimization and feasibility. The drying curves were predicted by a mathematical model that considers the combination of both internal and external resistances to moisture movement to estimate the drying time for design calculations. Discussions regarding the drying kinetics and dryer selection and design were strengthened by the materials characterization, which consisted of determining physical properties, geometric and shape factors, morphology and microstructure, and thermal properties of the GCF particles. A reduction of at least 39% in the conveyor-belt dryer area for higher throughput conditions showed an effective reduction of capital costs. It was verified that the combination with thicker material layers with high inlet air temperatures yields higher dryer throughput, indicating significant possibilities for capital cost savings. © 2021 Elsevier Ltd

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