Oxidation characteristics of a cellulose-derived hydrochar in thermogravimetric and laminar flow burner experiments
Oxidation characteristics of a cellulose-derived hydrochar in thermogravimetric and laminar flow burner experiments
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DOI：
10.1016/j.fuproc.2016.02.027
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发表时间：
2016-07-01
影响因子：
7.5
通讯作者：
Muhler, Martin
中科院分区：
文献类型：
--
作者：
Duedder, Hendrik;Wuetscher, Annika;Muhler, Martin
采用水热碳化法制备了合成褐煤，在水热碳化过程中掺入了典型的灰分矿物，研究了灰分对燃料氧化速率的催化作用。采用盐酸化学浸出褐煤作为标准物质。燃烧实验是在化学控制条件下的热重分析和限制孔扩散的层流反应器中进行的。对层流反应器中加氢焦的研究提供了煤粉燃烧的典型气体温度和升温速率。经化学浸出的褐煤的燃烧速度与加氢半焦相当。此外，在两种燃烧实验中都检测到了掺入氧化铁的催化效果。(C)2016爱思唯尔B.V.保留所有权利。
Synthetic lignite was prepared by hydrothermal carbonization, in which minerals typical for coal ashes were incorporated during hydrothermal carbonization allowing us to study the catalytic effect of ash components on the oxidation rate of the fuel. Chemically leached lignite using hydrochloric acid was applied as reference material. Combustion experiments were performed by thermogravimetric analysis under chemically controlled conditions and in a laminar flow reactor under pore-diffusion limitation. The investigation of the hydrochar in the laminar flow reactor provided gas temperatures and heating rates typical for pulverized coal combustion. The combustion rate of the chemically leached lignite was found to be comparable to the hydrochar. Furthermore, the catalytic effect of incorporated iron oxide was detected in both combustion experiments. (C) 2016 Elsevier B.V. All rights reserved.