化工进展 ›› 2023, Vol. 42 ›› Issue (3): 1240-1247.DOI: 10.16085/j.issn.1000-6613.2022-0999

• 化工过程与装备 • 上一篇    下一篇

废轮胎梯级热解中试装置开发与产物特性分析

潘宇涵1(), 徐俊2, 赵光杰3, 林诚乾1, 金亮3, 薛志亮1, 周永刚1, 黄群星1,4()   

  1. 1.浙江大学热能工程研究所,能源清洁利用国家重点实验室,浙江 杭州 310027
    2.杭州中策清泉实业有限公司,浙江 杭州 311401
    3.中国联合工程有限公司,浙江 杭州 310052
    4.浙江省清洁能源与碳中和重点实验室,浙江 杭州 310027
  • 收稿日期:2022-05-30 修回日期:2022-07-27 出版日期:2023-03-15 发布日期:2023-04-10
  • 通讯作者: 黄群星
  • 作者简介:潘宇涵(1995—),男,博士研究生,研究方向为固体废弃物资源化利用。E-mail:panyuhan@zju.edu.cn
  • 基金资助:
    浙江省重点研发计划(2020C03084);山东省重点研发计划(2019JZZY020806)

Development of pilot-plant for the step pyrolysis of waste tires and analysis of product characteristics

PAN Yuhan1(), XU Jun2, ZHAO Guangjie3, LIN Chengqian1, JIN Liang3, XUE Zhiliang1, ZHOU Yonggang1, HUANG Qunxing1,4()   

  1. 1.State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China
    2.Hangzhou Zhongce Qingquan Industrial Corporation Limited, Hangzhou 311401, Zhejiang, China
    3.China United Engineering Corporation Limited, Hangzhou 310052, Zhejiang, China
    4.Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Hangzhou 310027, Zhejiang, China
  • Received:2022-05-30 Revised:2022-07-27 Online:2023-03-15 Published:2023-04-10
  • Contact: HUANG Qunxing

摘要:

基于固定床管式热解炉对废轮胎热解产物性质进行了详细的研究和分析,根据热解产物特性针对性地提出了产物的改性提质方法,并基于该方法自主设计开发了一套适用于废轮胎高效能源资源化利用的梯级螺旋热解中试装置,以获得高品质热解产物。甲苯抽出物透光率和闪点分别是限制热解炭黑和热解油高效安全应用的瓶颈问题。本文开发的中试热解装置采用梯级热解技术和多级冷凝技术,可有效改善热解产物品质,所得热解炭黑甲苯抽出物透光率达到100%,热解油闪点达到76.5℃,均满足相应标准。同时,中试装置采用热解气循环燃烧供能的方案,可实现装置的热量自维持,显著降低工艺热解能耗。本文基于自主开发的中试梯级热解装置,解决了废轮胎热解产物高值化利用的瓶颈问题,以期为废轮胎热解技术规模化推广应用奠定基础。

关键词: 废轮胎, 中试热解装置, 梯级热解, 多级冷凝, 自热式

Abstract:

In this paper, based on the fixed-bed tubular pyrolysis furnace, the properties of waste tire pyrolysis products were studied and analyzed in detail. A series of modification and upgrading methods were proposed according to the characteristics of the pyrolysis products. Based on the methods, a set of step spiral pilot-scale pyrolysis reactor suitable for efficient energy resource utilization of waste tires was independently designed and developed to obtain pyrolysis products with high-quality. The light transmittance of the toluene extract and the flash point were the bottleneck issues that limited the efficient and safe application of pyrolysis carbon black and pyrolysis oil, respectively. The pilot-scale pyrolysis system developed in this research adopted the step pyrolysis technology and multi-stage condensation technology, which could effectively improve the quality of pyrolysis products. The light transmittance of the toluene extract of the obtained pyrolysis carbon black reached 100% and the flash point of the obtained pyrolysis oil reached 76.5℃, both of which met the corresponding standards. At the same time, the pilot-plant adopted the scheme of circulating pyrolysis gases for energy supply, which could realize the thermal self-sustaining of the system and significantly reduce the energy consumption of the pyrolysis process. In this research, the bottleneck problem of high-value utilization of waste tire pyrolysis products had been solved based on the self-developed pilot-scale step pyrolysis system. This study laid a foundation for the large-scale promotion and application of waste tire pyrolysis technology.

Key words: waste tires, pilot pyrolysis plant, step pyrolysis, multistage condensing, self-heated

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