气候变化领域集成服务门户(CCPortal): A study of densified biochar as carbon source in the silicon and ferrosilicon production

CCPortal

DOI	10.1016/j.energy.2019.06.013
	A study of densified biochar as carbon source in the silicon and ferrosilicon production
	Riva L.; Surup G.R.; Buø T.V.; Nielsen H.K.
发表日期	2019
ISSN	3605442
起始页码	985
结束页码	996
卷号	181
英文摘要	Biochar pellets were investigated as renewable reducing agents in substitution of coal and coke in the silicon and ferrosilicon production, where a high reactivity, good mechanical properties and low feedstock costs are appreciated. The usage of pyrolysis oil as binder was investigated as way to improve the quality of the pellets. Norway spruce biochar produced at 500, 800 and 1100 °C, was pelletized blended with pyrolysis oil and lignosulphonate. A second heat treatment was carried out at the same temperatures to evaluate the interaction between biochar and pyrolysis oil and to imitate the thermal stability of the pellets when used in a furnace. Density, tensile strength and mechanical durability were analyzed before and after the second heat treatment. The CO2 reactivity was investigated under non-steady conditions. It was observed that the pellet quality is affected by the pyrolysis temperature, showing a relevant difference in properties between 500 °C and 800 °C. The combination of lignosulphonate and pyrolysis oil improved considerably the density and mechanical durability of the pellets. By the second heat treatment, the quality of the pellets was bettered significantly. Densification seems to reduce CO2 reactivity; however, pellets showed a still high reactivity. Elsevier Ltd
英文关键词	Biochar; Carbon neutrality; Densification; Ferrosilicon production; Pyrolysis oil; Silicon production
scopus关键词	Carbon; Carbon dioxide; Densification; Durability; Heat treatment; Mechanical properties; Pelletizing; Pyrolysis; Reducing agents; Silicon; Tensile strength; Thermodynamic stability; Bio chars; Carbon neutralities; Feedstock costs; High reactivity; Mechanical durability; Non-steady conditions; Pyrolysis oil; Pyrolysis temperature; Ferroalloys; biochar; carbon; industrial production; mechanical property; oil; pyrolysis; silicon; Picea abies
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/176186
作者单位	Department of Engineering Sciences, University of Agder, Postboks 509, Grimstad, 4898, Norway; Elkem Technology, Fiskåveien 10, Kristiansand, 4621, Norway
推荐引用方式 GB/T 7714	Riva L.,Surup G.R.,Buø T.V.,et al. A study of densified biochar as carbon source in the silicon and ferrosilicon production[J],2019,181.
APA	Riva L.,Surup G.R.,Buø T.V.,&Nielsen H.K..(2019).A study of densified biochar as carbon source in the silicon and ferrosilicon production.Energy,181.
MLA	Riva L.,et al."A study of densified biochar as carbon source in the silicon and ferrosilicon production".Energy 181(2019).