气候变化领域集成服务门户(CCPortal): H2 production enhancement in underground coal gasification with steam addition: Effect of injection conditions

CCPortal

DOI	10.1016/j.energy.2024.130379
	H2 production enhancement in underground coal gasification with steam addition: Effect of injection conditions
	Feng, Lele; Dong, Maifan; Qin, Botao; Pang, Jiabao; Babaee, Saeideh
发表日期	2024
ISSN	0360-5442
EISSN	1873-6785
起始页码	291
卷号	291
英文摘要	Hydrogen is a clean energy source, and its use helps to mitigate climate change. Underground coal gasification for hydrogen production is a promising method for countries with abundant coal resources and high hydrogen demand. However, the existing coal-to-hydrogen process underground exhibit low production efficiency. This work proposes the use of swirl flow injection to improve hydrogen production efficiency, and also explores the influence of other injection conditions (oxygen flow rate, steam mass flow and steam temperature) on hydrogen production. For straight flow injection, the effect of steam addition on gasification performance depends on the oxygen flow rate, and the highest H2 production is 14.6 L under 1 L/min oxygen and 1 g/L steam. With a swirl flow injection, H2 production increases with steam addition for both 1 L/min and 2 L/min oxygen, which shows a larger H2 production than straight flow injection. The highest H2 production for swirl flow injection is 19 L under 2 L/min oxygen and 1 g/L steam. An increase in steam temperature barely affects the composition of products but apparently increases the amount of products. The fracture effect of high temperature steam might cause a sudden increase of H2 and CH4 at the late stage.
英文关键词	Hydrogen production; Underground coal gasification; Straight flow; Swirl flow; Steam temperature
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels
WOS类目	Thermodynamics ; Energy & Fuels
WOS记录号	WOS:001170785900001
来源期刊	ENERGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295363
作者单位	China University of Mining & Technology; China University of Mining & Technology; University of Witwatersrand
推荐引用方式 GB/T 7714	Feng, Lele,Dong, Maifan,Qin, Botao,et al. H2 production enhancement in underground coal gasification with steam addition: Effect of injection conditions[J],2024,291.
APA	Feng, Lele,Dong, Maifan,Qin, Botao,Pang, Jiabao,&Babaee, Saeideh.(2024).H2 production enhancement in underground coal gasification with steam addition: Effect of injection conditions.ENERGY,291.
MLA	Feng, Lele,et al."H2 production enhancement in underground coal gasification with steam addition: Effect of injection conditions".ENERGY 291(2024).