期刊
APPLIED ENERGY
卷 162, 期 -, 页码 245-256出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2015.09.091
关键词
Biomass conversion; Devolatilization; High heating rate; Kinetics; High temperature; Low residence time
资金
- Danish Council for Strategic Research
This work combines experimental and computational fluid dynamics (CFD) results to derive global kinetics for biomass (pine wood) devolatilization during heating rates on the order of 10(5) K s(-1), bulk flow peak temperatures between 1405 and 1667 K, and particle residence times below 0.1 s. Experiments were conducted on a laboratory laminar entrained flow reactor (LFR) using solid fuel feed rates on the order of 10-20 mg h(-1). Employing a simple single step first order (SFOR) mechanism with an Arrhenius type rate expression, the best fit of the pyrolysis kinetics was found to be: A = 18.9 X 10(3) s(-1), E-a = 21305 J mol(-1). The accuracy of the derived global kinetics was supported by comparing predictions to experimental results from a 15 kW furnace. The work emphasizes the importance of characterizing the temperature history of the biomass particles when deriving pyrolysis kinetics. The present results indicate faster kinetics than found in the literature, leading to predicted residence times required for full conversion one order of magnitude lower than when compared to thermogravimetric analysis (TGA) derived kinetics. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据