Carbon-negative hydrogen from biomass using gas switching integrated gasification: Techno-economic assessment

Antonia Helf; Schalk Cloete; Florian KellerJan Hendrik CloeteAbdelghafour Zaabout

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Carbon-negative hydrogen from biomass using gas switching integrated gasification: Techno-economic assessment

机译：Carbon-negative hydrogen from biomass using gas switching integrated gasification: Techno-economic assessment

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Ambitious decarbonization pathways to limit the global temperature rise to well below 2 ℃ will require large-scale CO_2 removal from the atmosphere. One promising avenue for achieving this goal is hydrogen production from biomass with CO_2 capture. The present study investigates the techno-economic prospects of a novel biomass-to-hydrogen process configuration based on the gas switching integrated gasification (GSIG) concept. GSIG applies the gas switching combustion principle to indirectly combust off-gas fuel from the pressure swing adsorption unit in tubular reactors integrated into the gasifier to improve efficiency and CO_2 capture. In this study, these efficiency gains facilitated a 5% reduction in the levelized cost of hydrogen (LCOH) relative to conventional O_2-blown fluidized bed gasification with pre-combustion CO_2 capture, even though the larger and more complex gasifier cancelled out the capital cost savings from avoiding the air separation and CO_2 capture units. The economic assessment also demonstrated that advanced gas treatment using a tar cracker instead of a direct water wash can further reduce the LCOH by 12% and that the CO_2 prices in excess of 100 €/ton, consistent with ambitious decarbonization pathways, will make this negative-emission technology economically highly attractive. Based on these results, further research into the GSIG concept to facilitate more efficient utilization of limited biomass resources can be recommended.

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来源
《Energy conversion & management》 |2022年第10期|116248.1-116248.12|共12页
作者
Antonia Helf; Schalk Cloete; Florian KellerJan Hendrik CloeteAbdelghafour Zaabout;
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作者单位

Process Technology Department, SINTEF Industry, Norway;

TU Bergakademie Freiberg, Institute of Energy Process Engineering and Chemical Engineering, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Hydrogen; Biomass; CO_2 capture; Gasification; Negative emissions; Chemical looping;

Carbon-negative hydrogen from biomass using gas switching integrated gasification: Techno-economic assessment

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