中国塑料 ›› 2022, Vol. 36 ›› Issue (9): 122-130.DOI: 10.19491/j.issn.1001-9278.2022.09.017

• 塑料与环境 • 上一篇    下一篇

废塑料脱氯技术现状及产业化进展

全淑苗, 张彦军(), 宋小飞, 杜闰萍, 于丹   

  1. 北京航天石化技术装备工程有限公司,北京 100176
  • 收稿日期:2022-06-16 出版日期:2022-09-26 发布日期:2022-09-26
  • 通讯作者: 张彦军(1969—),男,研究员,主要从事有机固废化学回收研究工作,zhangyj@calt11.cn
    E-mail:zhangyj@calt11.cn
  • 基金资助:
    如获得有关政府部门或社会团体设立的研究基金或课题资助,请列出基金项目名称及编号

Status and industrialization progress in dechlorination technologies for waste plastics

QUAN Shumiao, ZHANG Yanjun(), SONG Xiaofei, DU Runping, YU Dan   

  1. Beijing Aerospace Petrochemical Technology & Equipment Engineering Co,Ltd,Beijing 100176,China
  • Received:2022-06-16 Online:2022-09-26 Published:2022-09-26
  • Contact: ZHANG Yanjun E-mail:zhangyj@calt11.cn

摘要:

废塑料化学回收再利用已成为研究热点,但在含氯废塑料化学回收过程中,氯化物对生产装置有强腐蚀性,同时污染环境、降低产品质量。通过对我国现行关于含氯量的相关排放标准的解析,脱氯技术的发展是完善废塑料化学回收工艺的重要途径。详细介绍了国内外各脱氯技术(分选技术、机械技术、溶剂脱氯技术和分步热分解技术、吸附技术和催化技术)的特点、反应机理及产业化应用情况,分析比较了各技术的优缺点,提出了组合脱氯技术以加快推进含氯废塑料化学回收工艺的发展。

关键词: 废塑料, 化学回收, 热解技术, 脱氯技术, 产业化

Abstract:

The chemical recycling of waste plastics has become a research hotspot. However, in the chemical recycling process of the waste plastics containing chlorine, the chlorides are highly corrosive to the production equipment. This leads to the environmental pollution as well as a reduction in product quality. Through the analysis of the current relevant emission standards for chlorine content in our country, the development of dechlorination technology is recognized to be an important way to improve the chemical recycling process of waste plastics. At present, the domestic and foreign dechlorination technologies mainly include sorting, machinery, solvent dechlorination, step⁃by⁃step thermal decomposition, adsorption, and catalysis technologies. The characteristics, reaction mechanisms, and industrial applications of various dechlorination technologies were introduced in detail. Moreover, the advantages and disadvantages of each technology were analyzed and compared. A combined dechlorination technology was proposed to accelerate the development of chemical recovery process of chlorine⁃containing waste plastics.

Key words: waste plastic, chemical recovery, pyrolysis technology, dechlorination technology, industrialization

中图分类号: