Influence of devolatilized gases composition from raw coal fuel in the lab scale DCFC (direct carbon fuel cell) system

被引：28

作者：

Eom, Seongyong ^{[1
]}

Ahn, Seongyool ^{[2
]}

Rhie, Younghoon ^{[1
]}

Kang, Kijoong ^{[1
]}

Sung, Yonmo ^{[1
]}

Moon, Cheoreon ^{[1
]}

Choi, Gyungmin ^{[3
]}

Kim, Duckjool ^{[3
]}

机构：

[1] Pusan Natl Univ, Grad Sch Mech Engn, Pusan 609735, South Korea

[2] CRIEPI, Yokosuka, Kanagawa 2400196, Japan

[3] Pusan Natl Univ, Sch Mech Engn, Pusan 609735, South Korea

来源：

ENERGY | 2014年 / 74卷

基金：

新加坡国家研究基金会;

关键词：

Direct carbon fuel cell; Raw coal; Char; Exhaust gas; Thermal pyrolysis; PERFORMANCE; METHANE;

D O I：

10.1016/j.energy.2014.07.039

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effect of thermal decomposition gases on anodic reaction has been investigated in the DCFC (direct carbon fuel cell). To demonstrate this phenomenon, of three raw coals and the corresponding coal chars were selected. Their electrochemical reactions were evaluated by open circuit voltage, current density, and maximum power density under the same conditions. From this evaluation, higher DCFC performance was achieved with the raw coal than with the coal char due to the additional reaction of the produced gases. At the high operating temperature of this system (over 500 degrees C), the fuels undergo pyrolysis or partial gasification to release hydrogen or hydrocarbon as additional products that may affect the electrochemical reactions at the anode. The dominant effective generated gases observed in thermogravimetric analysis (TGA) experiments were H-2, CH4, CO, and CO2. These gases provided additional electrochemical potential for this system. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：734 / 740

页数：7

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