Sewage sludge pyrolysis coupled with self-supplied steam reforming for high quality syngas production and the influence of initial moisture content

doi:10.1016/j.wasman.2020.03.012

GIEC OpenIR

	Sewage sludge pyrolysis coupled with self-supplied steam reforming for high quality syngas production and the influence of initial moisture content
	Mei, Zhenfei 1; Chen, Dezhen 1; Zhang, Jixuan 1; Yin, Lijie 1; Huang, Zhen 2; Xin, Qianfan 1
	2020-04-01
发表期刊	WASTE MANAGEMENT
ISSN	0956-053X
卷号	106 页码:77-87
通讯作者	Chen, Dezhen(chendezhen@tongji.edu.cn)
摘要	A technology of sewage sludge (SS) pyrolysis coupled with self-supplied steam reforming of the volatile is developed to utilize the latent heat of the steam vapor released in the SS drying & pyrolysis process. An integrated reactor consisting of a vertical free-falling pyrolysis section and a horizontal screw-moved reforming section is designed for this purpose. The performance of the reactor shows that by changing the moving speed of the char in the reforming section, high quality syngas with an H-2/CO ratio of 4.37 and a percentage of H-2 + CO up to 66.58 vol% can be obtained at approximately 570-600 degrees C for the dry SS. There is an optimum moving speed of the screw for producing the highest volume of the syngas. A higher moving speed of the screw also results in a higher concentration of the aromatic compounds in the final pyrolysis oil. When the initial moisture content of SS increases from 0 to 65.50%, the H-2/CO ratio and H-2/CO2 ratio in the syngas increase from 4.37 to 30.87 and from 2.1 to 2.6 correspondingly, and the final oil yield decreases from 24.03 wt% to 14.16 wt%. Moreover, the total energy recovery efficiency decreases from 88.85% to 61.92%, while the energy portion of syngas shows a peak of 44.18% of the total energy input when the initial moisture content is 41.26%. The integrated reactor also provides a good opportunity for adding a catalyst such as dolomite to make the process more effective. The technology developed in this paper provides an approach to deal with SS with a relatively high moisture content. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	Sewage sludge Pyrolysis Steam reforming Moisture content Syngas H-2/CO2 ratio Energy recovery efficiency
DOI	10.1016/j.wasman.2020.03.012
关键词[WOS]	MUNICIPAL SOLID-WASTE ; HIGH-TEMPERATURE PYROLYSIS ; CATALYTIC DECOMPOSITION ; MSW PYROLYSIS ; TAR ; BIOMASS ; GASIFICATION ; CHAR ; VOLATILE ; MODEL
收录类别	SCI
语种	英语
资助项目	Chinese National Natural Science Foundation[51776141]
WOS研究方向	Engineering ; Environmental Sciences & Ecology
项目资助者	Chinese National Natural Science Foundation
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000525840000014
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/26990
专题	中国科学院广州能源研究所
通讯作者	Chen, Dezhen
作者单位	1.Tongji Univ, Sch Mech Engn, Thermal & Environm Engn Inst, 1239 Siping Rd, Shanghai 200092, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Mei, Zhenfei,Chen, Dezhen,Zhang, Jixuan,et al. Sewage sludge pyrolysis coupled with self-supplied steam reforming for high quality syngas production and the influence of initial moisture content[J]. WASTE MANAGEMENT,2020,106:77-87.
APA	Mei, Zhenfei,Chen, Dezhen,Zhang, Jixuan,Yin, Lijie,Huang, Zhen,&Xin, Qianfan.(2020).Sewage sludge pyrolysis coupled with self-supplied steam reforming for high quality syngas production and the influence of initial moisture content.WASTE MANAGEMENT,106,77-87.
MLA	Mei, Zhenfei,et al."Sewage sludge pyrolysis coupled with self-supplied steam reforming for high quality syngas production and the influence of initial moisture content".WASTE MANAGEMENT 106(2020):77-87.