Pyrolysis of scrap tyres pretreated by waste coal tar

For disposal of scrap tyres, there have been a lot of studies done by previous researchers, but it yet remains a longstanding challenge in practice. To find a solution for this problem, the feasibility of a proposed approach in a laboratory scale was tested. The pyrolysis of scrap tyres pretreated b...

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Main Authors: Shaobo Ouyang, Daoling Xiong, Yang Li, Laixi Zou, Jifan Chen
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2018-12-01
Series:Carbon Resources Conversion
Online Access:http://www.sciencedirect.com/science/article/pii/S2588913318300140
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author Shaobo Ouyang
Daoling Xiong
Yang Li
Laixi Zou
Jifan Chen
author_facet Shaobo Ouyang
Daoling Xiong
Yang Li
Laixi Zou
Jifan Chen
author_sort Shaobo Ouyang
collection DOAJ
description For disposal of scrap tyres, there have been a lot of studies done by previous researchers, but it yet remains a longstanding challenge in practice. To find a solution for this problem, the feasibility of a proposed approach in a laboratory scale was tested. The pyrolysis of scrap tyres pretreated by waste coal tar (noted as “as-pretreated” tyres) was performed in a batch reactor at atmospheric pressure. Waste coal tar was used to modify the scrap tyres to improve the pyrolysis efficiency of scrap tyres input and the quality of the product tar. The swelling behavior of scrap tyres soaked in waste coal tar at 10 °C, effect of pyrolysis temperature on the product yields, and the synergies during pyrolysis of the as-pretreated tyres and co-pyrolysis of scrap tyres/waste coal tar mixture were all investigated in detail. The results observed found that by comparison of the calculated yields and the observed experimental yields for pyrolysis products, the synergy from co-pyrolysis of scrap tyres/waste coal tar mixture boosted the gas yield without increasing the tar yield. In contrast, the synergy during pyrolysis of the as-pretreated tyres could enhance the tar yield, but reduced the gas and char yields. According to the distillation range analyses of the tar, more light fractions were found in the tar from pyrolysis of the as-pretreated tyres, in which the gasoline fraction, diesel fraction and kerosene fraction were 38.4 wt%, 46.8 wt% and 50.2 wt%, respectively. This work is expected to be helpful in further use of scrap tyres. Keywords: Scrap tyres, Waste coal tar, Pyrolysis, Synergy, Distillation range analyses
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spelling doaj.art-2ebaf11ba41e4a18a72026f2f03800c52022-12-21T22:23:24ZengKeAi Communications Co., Ltd.Carbon Resources Conversion2588-91332018-12-0113218227Pyrolysis of scrap tyres pretreated by waste coal tarShaobo Ouyang0Daoling Xiong1Yang Li2Laixi Zou3Jifan Chen4Corresponding authors.; School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, Jiangxi, PR ChinaCorresponding authors.; School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, Jiangxi, PR ChinaSchool of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, Jiangxi, PR ChinaSchool of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, Jiangxi, PR ChinaSchool of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, Jiangxi, PR ChinaFor disposal of scrap tyres, there have been a lot of studies done by previous researchers, but it yet remains a longstanding challenge in practice. To find a solution for this problem, the feasibility of a proposed approach in a laboratory scale was tested. The pyrolysis of scrap tyres pretreated by waste coal tar (noted as “as-pretreated” tyres) was performed in a batch reactor at atmospheric pressure. Waste coal tar was used to modify the scrap tyres to improve the pyrolysis efficiency of scrap tyres input and the quality of the product tar. The swelling behavior of scrap tyres soaked in waste coal tar at 10 °C, effect of pyrolysis temperature on the product yields, and the synergies during pyrolysis of the as-pretreated tyres and co-pyrolysis of scrap tyres/waste coal tar mixture were all investigated in detail. The results observed found that by comparison of the calculated yields and the observed experimental yields for pyrolysis products, the synergy from co-pyrolysis of scrap tyres/waste coal tar mixture boosted the gas yield without increasing the tar yield. In contrast, the synergy during pyrolysis of the as-pretreated tyres could enhance the tar yield, but reduced the gas and char yields. According to the distillation range analyses of the tar, more light fractions were found in the tar from pyrolysis of the as-pretreated tyres, in which the gasoline fraction, diesel fraction and kerosene fraction were 38.4 wt%, 46.8 wt% and 50.2 wt%, respectively. This work is expected to be helpful in further use of scrap tyres. Keywords: Scrap tyres, Waste coal tar, Pyrolysis, Synergy, Distillation range analyseshttp://www.sciencedirect.com/science/article/pii/S2588913318300140
spellingShingle Shaobo Ouyang
Daoling Xiong
Yang Li
Laixi Zou
Jifan Chen
Pyrolysis of scrap tyres pretreated by waste coal tar
Carbon Resources Conversion
title Pyrolysis of scrap tyres pretreated by waste coal tar
title_full Pyrolysis of scrap tyres pretreated by waste coal tar
title_fullStr Pyrolysis of scrap tyres pretreated by waste coal tar
title_full_unstemmed Pyrolysis of scrap tyres pretreated by waste coal tar
title_short Pyrolysis of scrap tyres pretreated by waste coal tar
title_sort pyrolysis of scrap tyres pretreated by waste coal tar
url http://www.sciencedirect.com/science/article/pii/S2588913318300140
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AT daolingxiong pyrolysisofscraptyrespretreatedbywastecoaltar
AT yangli pyrolysisofscraptyrespretreatedbywastecoaltar
AT laixizou pyrolysisofscraptyrespretreatedbywastecoaltar
AT jifanchen pyrolysisofscraptyrespretreatedbywastecoaltar