Supercritical water gasification of Victorian brown coal: Experimental characterisation

被引：68

作者：

Yamaguchi, Doki ^{[1
]}

Sanderson, P. John ^{[2
]}

Lim, Seng ^{[2
]}

Aye, Lu ^{[1
]}

机构：

[1] Univ Melbourne, Dept Civil & Environm Engn, Melbourne, Vic 3010, Australia

[2] CSIRO Minerals, Clayton, Vic 3168, Australia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 08期

关键词：

Supercritical water gasification; Brown coal; Hydrogen; Quartz micro-reactor; HOT COMPRESSED WATER; LOW-RANK COAL; BIOMASS GASIFICATION; HYDROGEN-PRODUCTION; THERMODYNAMIC ANALYSIS; GLUCOSE; CONVERSION;

D O I：

10.1016/j.ijhydene.2009.02.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Supercritical water gasification is an innovative thermochemical conversion method for converting wet feedstocks into hydrogen-rich gaseous products. The non-catalytic gasification characteristics of Victorian brown coal were investigated in supercritical water by using a novel immersion technique with quartz batch reactors. Various operating parameters such as temperature, feed concentration and reaction time were varied to investigate their effect on the gasification behaviour. Gas yields, carbon gasification efficiency and the total gasification efficiency increased with increasing temperature and reaction time, and decreasing feed concentration. The mole fraction of hydrogen in the product gases was lowest at 600 degrees C, and increased to over 30% at a temperature of 800 degrees C. Varying parameters, especially reaction time, did not improve the coal utilisation for gas production significantly and the measured data showed a large deviation from the equilibrium level. Crown Copyright (C) 2009 Published by Elsevier Ltd on behalf of International Association for Hydrogen Energy. All rights reserved.

引用

页码：3342 / 3350

页数：9

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