Combination of hydrothermal carbonization and oxy-fuel combustion process for sewage sludge treatment: Combustion characteristics and kinetics analysis

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 固体废弃物处理与资源化实验室

	Combination of hydrothermal carbonization and oxy-fuel combustion process for sewage sludge treatment: Combustion characteristics and kinetics analysis
	Liu, Tingting ; Lang, Qianqian ; Xia, Yu ; Chen, Zeliang ; Li, Dong ; Ma, Jing ; Gai, Chao ; Liu, Zhengang
刊名	FUEL
	2019-04-15
卷号	242 页码:265-276
关键词	Sewage sludge Hydrothermal carbonization Hydrochar Oxy-fuel combustion Thermal-gravimetric analysis Kinetic analysis
ISSN号	0016-2361
英文摘要	Hydrothermal carbonization (HTC) and oxy-fuel combustion were combined for sewage sludge (SS) disposal for the first time. The combustion characteristics of HTC pretreated SS (hydrochar) under air as well as oxy-fuel combustion atmosphere were investigated by thermal-gravimetric analyzer. On the basis of combustion experiments, the kinetics parameters including energy activation, pre-exponential factor and reaction order were evaluated by Flynn-Wall-Ozawa (FWO) model and Avrami's theory. The results showed that the hydrochars had higher ignition temperature, higher ignition index and narrower combustion stage than SS, which implied more stable combustion behaviors of the hydrochars than SS. The lower activation energy of the hydrochar obtained from HTC at the temperature of 200 degrees C demonstrated that the hydrochars were more easily combusted in comparison to SS under identical oxy-fuel conditions. In addition, the ash problems of the slagging and fouling were mitigated by HTC treatment. In oxy-fuel atmosphere, the burnout temperature of the hydrochars was lower than that in air. More importantly, the dewaterability of SS was substantially improved by HTC and more than 30% of drying energy consumption was saved prior to combustion. This study indicated that the combination of HTC treatment and oxy-fuel combustion offered a promising alternative for SS disposal with the benefits of energy consumption and energy recovery.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43168]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Liu, Tingting,Lang, Qianqian,Xia, Yu,et al. Combination of hydrothermal carbonization and oxy-fuel combustion process for sewage sludge treatment: Combustion characteristics and kinetics analysis[J]. FUEL,2019,242:265-276.
APA	Liu, Tingting.,Lang, Qianqian.,Xia, Yu.,Chen, Zeliang.,Li, Dong.,...&Liu, Zhengang.(2019).Combination of hydrothermal carbonization and oxy-fuel combustion process for sewage sludge treatment: Combustion characteristics and kinetics analysis.FUEL,242,265-276.
MLA	Liu, Tingting,et al."Combination of hydrothermal carbonization and oxy-fuel combustion process for sewage sludge treatment: Combustion characteristics and kinetics analysis".FUEL 242(2019):265-276.