Dechlorination behavior on the recovery of useful resources from WEEE by the steam gasification in the molten carbonates

doi:10.1016/j.proenv.2016.02.108

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	Dechlorination behavior on the recovery of useful resources from WEEE by the steam gasification in the molten carbonates
	Zhang, Shangzhong 1,3; Yu, Yang 2
	2016
关键词	Dechlorination WEEE plastic Steam gasification Molten carbonates
卷号	31
DOI	10.1016/j.proenv.2016.02.108
页码	903-910
英文摘要	Dehalogenation is a significant process in recycling of WEEE plastics as energy or feedstock. Steam gasification in the presence of molten carbonates is a promising means for recycling WEEE as the plastics they contain can be converted into main product of syngas that can be recycled, and valuable metals are left for further processing. In the process, the organic halogen compounds can be expected recovered as safe and stable inorganic salts. In the study, typical chlorine containing WEEE plastic of PVC was studied by the steam gasification in the presence of molten carbonates at the temperature of 625 degrees C. The dechlorination stage was investigated by thermo-gravimetric analysis and differential thermal analysis besides the steam gasification. The thermal decomposition of PVC proceeded in two steps, the first step is dechlorination in the low temperature region around 200-400 degrees C, and the second step is decomposition of the remainder from the first step. The dechlorination in the steam gasification was mainly affected by the steam flow rate, temperature and carbonates. Results indicate that most of the chlorine can be removed in the process directly that the steam gasification is expected to be used as a feasible method for converting WEEE plastics into clean gaseous products together with valuable metals recovery. (C) 2016 The Authors. Published by Elsevier B.V.
会议录	SELECTED PROCEEDINGS OF THE TENTH INTERNATIONAL CONFERENCE ON WASTE MANAGEMENT AND TECHNOLOGY
会议录出版者	ELSEVIER SCIENCE BV
会议录出版地	SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS记录号	WOS:000387449800118
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/36425]
专题	兰州理工大学
通讯作者	Zhang, Shangzhong
作者单位	1.Jiangxi Key Lab Min & Met Environm Pollut Control, 156 Kejia Ave, Ganzhou 341000, Peoples R China 2.Lanzhou Univ Sci & Technol, 287 Langongping Rd, Lanzhou 730050, Peoples R China 3.Jiangxi Univ Sci & Technol, 86 Hongqi Ave, Ganzhou 341000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shangzhong,Yu, Yang. Dechlorination behavior on the recovery of useful resources from WEEE by the steam gasification in the molten carbonates[C]. 见:.