Thermogravimetric investigation of hydrochar-lignite co-combustion

被引：156

作者：

Liu, Zhengang ^{[1
]}

Quek, Augustine ^{[1
]}

Hoekman, S. Kent ^{[2
]}

Srinivasan, M. P. ^{[3
]}

Balasubramanian, R. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore

[2] DRI, Div Atmospher Sci, Reno, NV 89512 USA

[3] Natl Univ Singapore Blk ES, Dept Chem & Biomol Engn, Singapore 117576, Singapore

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 123卷

关键词：

Hydrochar; Co-combustion; Lignite; Thermogravimetric analysis; HYDROTHERMAL CARBONIZATION; BIOMASS; COAL; COMBUSTION; REACTIVITY; QUALITY; BLENDS;

D O I：

10.1016/j.biortech.2012.06.063

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Co-combustion of hydrochar with lignite was investigated by means of thermogravimetric analysis. Hydrochars were produced from coconut fibers and eucalyptus leaves under hydrothermal conditions at 250 degrees C. The hydrochar was added in varying amounts to lignite for combustion. The results indicated that hydrothermal treatment decreased the volatile matter content and increased the fixed carbon content of the biomaterials. The elevated energy density and decreased ash content of the hydrochar improved its combustion behavior when co-fired with lignite for energy production. The hydrochars derived from coconut fiber and eucalyptus leaves had similar chemical compositions and showed similar influences on lignite combustion. Hydrochar addition increased the burnout and shortened the combustion range of the hydrochar-lignite blends. High combustion efficiency was observed due to the synergistic interactions between hydrochar and lignite during the co-combustion process. A kinetic study showed that the combustion process of hydrochar-lignite blends followed first-order reaction rates. (C) 2012 Published by Elsevier Ltd.

引用

页码：646 / 652

页数：7

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