Analysis of chlorine flow in poly(vinyl chloride) production processes and optimization of chlorine use

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  • TANJI Yasunori
    Tokyo Institute of Technology , Graduate School of Bioscience and Biotechnology
  • HORI Katsutoshi
    Tokyo Institute of Technology , Graduate School of Bioscience and Biotechnology
  • MIYANAGA Kazuhiko
    Tokyo Institute of Technology , Graduate School of Bioscience and Biotechnology
  • UNNO Hajime
    Tokyo Institute of Technology , Graduate School of Bioscience and Biotechnology

Bibliographic Information

Other Title
  • ポリ塩化ビニル製造における塩素フローの解析と塩素利用の適正化
  • ポリ エンカ ビニル セイゾウ ニ オケル エンソ フロー ノ カイセキ ト エンソ リヨウ ノ テキセイカ

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Abstract

Poly(vinyl chloride)(PVC) is one of the most popularly used plastics. The PVC production process consists of monomer production process and polymerization processes. Analysis of chlorine flow in the PVC production process, which consumes chlorine massively in the chemical industry, suggested a strategy to realize the zero-emission of chlorine in this process. In the VCM production process, various kind of chlorinated compounds are co-produced. Most of these co-products are combusted or discarded as a waste. Anaerobic bioconversion of these byproducts such as chlorinated ethane to VCM may be effective to realize zero the emission of chlorine in PVC production process. Hydrogen chloride produced by pyrolysis or combustion of PVC waste can be used for ferric chloride and poly aluminum chloride production. Furthermore production of chlorine gas from the HCl through catalytic reaction may ease transportation and storage of chlorine. Such kind of chlorine flow among heterogeneous chemical processes may reduce chloine consumption in the whole industry and contribute to make a balance between hydrogen chloride and sodium hydroxide consumption in the industry. Substitution of PVC to other materials will be a strategy for reducing chlorine use, a systematic methods of which can be deduced from an analysis of processing condition and commodity characteristics of plastics.

Journal

  • ENVIRONMENTAL SCIENCE

    ENVIRONMENTAL SCIENCE 13 (5), 556-561, 2000

    SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN

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