Potassium catalytic hydrogen production in sorption enhanced gasification of biomass with steam

被引：98

作者：

Zhang, Yang ^{[1
]}

Gong, Xun ^{[1
]}

Zhang, Biao ^{[1
]}

Liu, Wenqiang ^{[1
]}

Xu, Minghou ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Sorption enhanced gasification; Hydrogen production; Potassium; Catalyst type; Catalyst loading; FLUIDIZED-BED GASIFICATION; GAS-PRODUCTION; RICH GAS; CARBON; PYROLYSIS; TEMPERATURE; ALKALI; MECHANISM; OXIDE; AIR;

D O I：

10.1016/j.ijhydene.2014.01.015

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：

Sorption enhanced gasification (SEG) of biomass with steam was investigated in a fixed-bed reactor to elucidate the effects of temperature, catalyst type and loading on hydrogen production. K2CO3, CH3COOK and KCl were chosen as potassium catalyst precursors to improve carbon conversion efficiency in gasification process. It was indicated that from 600 degrees C to 700 degrees C, the addition of K2CO3 or CH3COOK catalyzed the gasification for hydrogen production, and hydrogen yield and carbon conversion increased with increasing catalyst loadings of K2CO3 or CH3COOK. However, the hydrogen yield and carbon conversion decreased as the amount of KCl was increased due to inhibition of KCl on gasification. The maximum carbon conversion efficiency (88.0%) was obtained at 700 degrees C corresponding to hydrogen yield of 73.0 vol.% when K2CO3 of 20 wt.% K loading was used. In particular, discrepant catalytic performance was observed between K2CO3 and CH3COOK at different temperatures and the corresponding mechanism was also discussed. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：4234 / 4243

页数：10

共 47 条

[41] Steam gasification of coal char catalyzed by K2CO3 for enhanced production of hydrogen without formation of methane [J].

Wang, Jie ;

Jiang, Mingquan ;

Yao, Yihong ;

Zhang, Yanmei ;

Cao, Jianqin .

FUEL, 2009, 88 (09) :1572-1579

[42] Hydrogen production in steam gasification of biomass with CaO as a CO2 absorbent [J].

Wei, Ligang ;

Xu, Shaoping ;

Liu, Jingang ;

Liu, Changhou ;

Liu, Shuqin .

ENERGY & FUELS, 2008, 22 (03) :1997-2004

[43] Hydrogen synthesis from biomass pyrolysis with in situ carbon dioxide capture using calcium oxide [J].

Widyawati, Meilina ;

Church, Tamara L. ;

Florin, Nicholas H. ;

Harris, Andrew T. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (08) :4800-4813

[44] ON THE MECHANISM OF THE POTASSIUM CARBONATE CATALYZED GASIFICATION OF ACTIVATED CARBON - THE INFLUENCE OF THE CATALYST CONCENTRATION ON THE REACTIVITY AND SELECTIVITY AT LOW STEAM PRESSURES [J].

WIGMANS, T ;

ELFRING, R ;

MOULIJN, JA .

CARBON, 1983, 21 (01) :1-12

[45] Distinctive effects of CaO additive on atmospheric gasification of biomass at different temperatures [J].

Xu, GW ;

Murakami, T ;

Suda, T ;

Kusama, S ;

Fujimori, T .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (15) :5864-5868

[46] Hydrogen-rich gas production by steam gasification of char from biomass fast pyrolysis in a fixed-bed reactor: Influence of temperature and steam on hydrogen yield and syngas composition [J].

Yan, Feng ;

Luo, Si-yi ;

Hu, Zhi-quan ;

Xiao, Bo ;

Cheng, Gong .

BIORESOURCE TECHNOLOGY, 2010, 101 (14) :5633-5637

[47] One-step preparation of water-soluble single-walled carbon nanotubes [J].

Zhang, Li ;

Ni, Qing-Qing ;

Fu, Yaqin ;

Natsuki, Toshiaki .

APPLIED SURFACE SCIENCE, 2009, 255 (15) :7095-7099

← 1 2 3 4 5 →