Integration of coal gasification and waste heat recovery from high   temperature steel slags: an emerging strategy to emission reduction

doi:10.1038/srep16591

CORC > 北京大学 > 工学院

	Integration of coal gasification and waste heat recovery from high temperature steel slags: an emerging strategy to emission reduction
	Sun, Yongqi ; Sridhar, Seetharaman ; Liu, Lili ; Wang, Xidong ; Zhang, Zuotai
刊名	Scientific Reports
	2015
关键词	DIRECT REDUCED IRON BLAST-FURNACE SLAG BIOMASS GASIFICATION HYDROGEN-PRODUCTION ENERGY EFFICIENCY STEELMAKING SLAG THERMAL-ANALYSIS WATER-VAPOR MOLTEN SLAG HOT SLAG
DOI	10.1038/srep16591
英文摘要	With the continuous urbanization and industrialization in the world, energy saving and greenhouse gas (GHG) emission reduction have been serious issues to be addressed, for which heat recovery from traditional energy-intensive industries makes up a significant strategy. Here we report a novel approach to extract the waste heat and iron from high temperature steel slags (1450-1650 degrees C) produced in the steel industry, i.e., integration of coal gasification and steel slag treatment. Both the thermodynamics and kinetics of the pertinent reactions were identified. It was clarified that the kinetic mechanism for gasification varied from A2 model to A4 model (Avrami-Erofeev) in the presence of slags. Most importantly, the steel slags acted not only as good heat carriers but also as effective catalysts where the apparent activation energy for char gasification got remarkably reduced from 95.7 kJ/mol to 12.1 kJ/mol (A2 model). Furthermore, the FeO in the slags was found to be oxidized into Fe3O4, with an extra energy release, which offered a potential for magnetic separation. Moreover, based on the present research results, an emerging concept, composed of multiple industrial sectors, was proposed, which could serve as an important route to deal with the severe environmental problems in modern society.; National High Technology Research and Development Program of China (863 Program) [2012AA06A114]; Key Projects in the National Science & Technology Pillar Program [2013BAC14B07]; Common Development Fund of Beijing; National Natural Science Foundation of China [51472007, 51272005, 51172001]; SCI(E); PubMed; ARTICLE; zuotaizhang@pku.edu.cn; 16591; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416871]
专题	工学院
推荐引用方式 GB/T 7714	Sun, Yongqi,Sridhar, Seetharaman,Liu, Lili,et al. Integration of coal gasification and waste heat recovery from high temperature steel slags: an emerging strategy to emission reduction[J]. Scientific Reports,2015.
APA	Sun, Yongqi,Sridhar, Seetharaman,Liu, Lili,Wang, Xidong,&Zhang, Zuotai.(2015).Integration of coal gasification and waste heat recovery from high temperature steel slags: an emerging strategy to emission reduction.Scientific Reports.
MLA	Sun, Yongqi,et al."Integration of coal gasification and waste heat recovery from high temperature steel slags: an emerging strategy to emission reduction".Scientific Reports (2015).