Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes

The calorific value of household refuse (HR) is greatly improved after classification, which includes the implementation of sufficient pyrolysis conditions. Therefore, a better pyrolysis effect can be achieved by co-pyrolysis with industrial solid waste (ISW) with high calorific value. In this work,...

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Autores principales:	Hancheng Ma, Jianye Bei, Mingxiu Zhan, Wentao Jiao, Xu Xu, Xiaodong Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	household refuse industrial solid waste pyrolysis oil dioxin heavy metal coke Technology T
Acceso en línea:	https://doaj.org/article/cd6653cc3f1d4d9bbe5512ddbfac9ae8
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spelling	oai:doaj.org-article:cd6653cc3f1d4d9bbe5512ddbfac9ae82021-11-11T15:46:32ZExperimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes10.3390/en142169451996-1073https://doaj.org/article/cd6653cc3f1d4d9bbe5512ddbfac9ae82021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6945https://doaj.org/toc/1996-1073The calorific value of household refuse (HR) is greatly improved after classification, which includes the implementation of sufficient pyrolysis conditions. Therefore, a better pyrolysis effect can be achieved by co-pyrolysis with industrial solid waste (ISW) with high calorific value. In this work, HR and ISW were used as raw materials for co-pyrolysis experiments. The influence on the distribution of three-phase products after co-pyrolysis, the concentration of heavy metals and dioxins in the flue gas, and the distribution of PCDD/Fs isomers were studied. The results showed that, at a temperature of 600 °C and H/C = 1.3, of the formed material, the quantity of pyrolysis gas was approximately 27 wt.%, and the quantity of pyrolysis oil was approximately 40.75 wt.%, which mainly contained alkanes, olefins, and aromatic hydrocarbons. When S/C = 0.008, pyrolysis gas accounted for 25.95 wt.% of the formed material, and pyrolysis oil for 41.95 wt.% of the formed material. The ignition loss rate of pyrolysis coke was approximately 20%, and the maximal calorific value was 14,217 KJ/kg. According to the thermogravimetric experiment, the co-pyrolysis of HR and ISW can promote the positive reaction of pyrolysis, and the weight loss reached 62% at 550 °C. The emission of gaseous heavy metals was relatively stable, and the concentration of heavy metals slightly decreased. The main heavy metals in the ash were Cu, Fe, and Zn. The emission of dioxins could be effectively reduced by the pyrolysis of HR with ISW, and the produced dioxins were mainly synthesized from de novo synthesis. After pyrolysis, the toxic equivalent of dioxins in the flue gas was reduced from 0.69 to 0.29 ng I-TEQ/Nm<sup>3</sup>, and the distribution of dioxin isomers in the flue gas had little influence. The experimental results provide a theoretical basis for the application of co-pyrolysis technology with HR and ISW.Hancheng MaJianye BeiMingxiu ZhanWentao JiaoXu XuXiaodong LiMDPI AGarticlehousehold refuseindustrial solid wastepyrolysis oildioxinheavy metalcokeTechnologyTENEnergies, Vol 14, Iss 6945, p 6945 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	household refuse industrial solid waste pyrolysis oil dioxin heavy metal coke Technology T
spellingShingle	household refuse industrial solid waste pyrolysis oil dioxin heavy metal coke Technology T Hancheng Ma Jianye Bei Mingxiu Zhan Wentao Jiao Xu Xu Xiaodong Li Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes
description	The calorific value of household refuse (HR) is greatly improved after classification, which includes the implementation of sufficient pyrolysis conditions. Therefore, a better pyrolysis effect can be achieved by co-pyrolysis with industrial solid waste (ISW) with high calorific value. In this work, HR and ISW were used as raw materials for co-pyrolysis experiments. The influence on the distribution of three-phase products after co-pyrolysis, the concentration of heavy metals and dioxins in the flue gas, and the distribution of PCDD/Fs isomers were studied. The results showed that, at a temperature of 600 °C and H/C = 1.3, of the formed material, the quantity of pyrolysis gas was approximately 27 wt.%, and the quantity of pyrolysis oil was approximately 40.75 wt.%, which mainly contained alkanes, olefins, and aromatic hydrocarbons. When S/C = 0.008, pyrolysis gas accounted for 25.95 wt.% of the formed material, and pyrolysis oil for 41.95 wt.% of the formed material. The ignition loss rate of pyrolysis coke was approximately 20%, and the maximal calorific value was 14,217 KJ/kg. According to the thermogravimetric experiment, the co-pyrolysis of HR and ISW can promote the positive reaction of pyrolysis, and the weight loss reached 62% at 550 °C. The emission of gaseous heavy metals was relatively stable, and the concentration of heavy metals slightly decreased. The main heavy metals in the ash were Cu, Fe, and Zn. The emission of dioxins could be effectively reduced by the pyrolysis of HR with ISW, and the produced dioxins were mainly synthesized from de novo synthesis. After pyrolysis, the toxic equivalent of dioxins in the flue gas was reduced from 0.69 to 0.29 ng I-TEQ/Nm<sup>3</sup>, and the distribution of dioxin isomers in the flue gas had little influence. The experimental results provide a theoretical basis for the application of co-pyrolysis technology with HR and ISW.
format	article
author	Hancheng Ma Jianye Bei Mingxiu Zhan Wentao Jiao Xu Xu Xiaodong Li
author_facet	Hancheng Ma Jianye Bei Mingxiu Zhan Wentao Jiao Xu Xu Xiaodong Li
author_sort	Hancheng Ma
title	Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes
title_short	Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes
title_full	Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes
title_fullStr	Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes
title_full_unstemmed	Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes
title_sort	experimental study on co-pyrolysis characteristics of household refuse and two industrial solid wastes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cd6653cc3f1d4d9bbe5512ddbfac9ae8
work_keys_str_mv	AT hanchengma experimentalstudyoncopyrolysischaracteristicsofhouseholdrefuseandtwoindustrialsolidwastes AT jianyebei experimentalstudyoncopyrolysischaracteristicsofhouseholdrefuseandtwoindustrialsolidwastes AT mingxiuzhan experimentalstudyoncopyrolysischaracteristicsofhouseholdrefuseandtwoindustrialsolidwastes AT wentaojiao experimentalstudyoncopyrolysischaracteristicsofhouseholdrefuseandtwoindustrialsolidwastes AT xuxu experimentalstudyoncopyrolysischaracteristicsofhouseholdrefuseandtwoindustrialsolidwastes AT xiaodongli experimentalstudyoncopyrolysischaracteristicsofhouseholdrefuseandtwoindustrialsolidwastes
_version_	1718434055047872512

Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes

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