Integrated carbon dioxide/sludge gasification using waste heat from hot   slags: Syngas production and sulfur dioxide fixation

doi:10.1016/j.biortech.2015.01.061

CORC > 北京大学 > 工学院

	Integrated carbon dioxide/sludge gasification using waste heat from hot slags: Syngas production and sulfur dioxide fixation
	Sun, Yongqi ; Zhang, Zuotai ; Liu, Lili ; Wang, Xidong
刊名	生物资源技术
	2015
关键词	Sludge gasification Waste heat recovery Hot slag Syngas production SO2 fixation SUPERCRITICAL WATER GASIFICATION HIGH-TEMPERATURE SLAGS AIR-STEAM GASIFICATION BLAST-FURNACE SLAG SEWAGE-SLUDGE HYDROGEN-PRODUCTION THERMAL-ANALYSIS GAS PYROLYSIS KINETICS
DOI	10.1016/j.biortech.2015.01.061
英文摘要	The integrated CO2/sludge gasification using the waste heat in hot slags, was explored with the aim of syngas production, waste heat recovery and sewage sludge disposal. The results demonstrated that hot slags presented multiple roles on sludge gasification, i.e., not only a good heat carrier (500-950 degrees C) but also an effective desulfurizer (800-900 degrees C). The total gas yields increased from 0.022 kg/kg(sludge) at 500 degrees C to 0.422 kg/kg(sludge) at 900 degrees C; meanwhile, the SO2 concentration at 900 degrees C remarkably reduced from 164 ppm to 114 ppm by blast furnace slags (BFS) and 93 ppm by steel slags (SS), respectively. A three-stage reaction was clarified including volatile release, char transformation and fixed carbon using Gaussian fittings and the kinetic model was analyzed. Accordingly, a decline process using the integrated method was designed and the optimum slag/sludge ratio was deduced. These deciphered results appealed potential ways of reasonable disposal of sewage sludge and efficient recovery of waste heat from hot slags. (C) 2015 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000349720300024&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels; SCI(E); EI; PubMed; 6; ARTICLE; zuotaizhang@pku.edu.cn; 174-182; 181
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/153795]
专题	工学院
推荐引用方式 GB/T 7714	Sun, Yongqi,Zhang, Zuotai,Liu, Lili,et al. Integrated carbon dioxide/sludge gasification using waste heat from hot slags: Syngas production and sulfur dioxide fixation[J]. 生物资源技术,2015.
APA	Sun, Yongqi,Zhang, Zuotai,Liu, Lili,&Wang, Xidong.(2015).Integrated carbon dioxide/sludge gasification using waste heat from hot slags: Syngas production and sulfur dioxide fixation.生物资源技术.
MLA	Sun, Yongqi,et al."Integrated carbon dioxide/sludge gasification using waste heat from hot slags: Syngas production and sulfur dioxide fixation".生物资源技术 (2015).