Liquefaction of mixed plastics containing PVC and dechlorination by calcium-based sorbent

Thallada Bhaskar, Azhar Uddin, Jun Kaneko, Toshiaki Kusaba, Toshiki Matsui, Akinori Muto, Yusaku Sakata, Katshuhide Murata

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The pyrolysis of PVC-containing mixed plastics (PVC/PP/PE/PS) was carried out at 430°C under atmospheric pressure by semibatch operation using a carbon composite of calcium carbonate sorbent (Ca-C) and also in the absence of sorbent (thermal). An amount of 4 g of Ca-C sorbent was used for consecutive 6 batches (each batch 10 g plastic) of the mixed plastic (PVC/PP/PE/PS:1/3/3/3) pyrolysis process. Hydrogen chloride and chlorinated hydrocarbons were produced during the pyrolysis of the mixed plastics containing PVC (PVC/PP/PE/PS). The Ca-C sorbent captured the hydrogen chloride evolved from the pyrolysis process. The theoretical sorbent capacity (71%) was utilized by repeatedly using the same sorbent for up to 5 consecutive batch processes without chlorine compounds in liquid products. The chlorinated hydrocarbons observed in the liquid products were obtained during run 5 (theoretical sorbent capacity 89%) and also during run 6 (theoretical sorbent capacity 106%). The hydrocarbons produced during the pyrolysis process reacted with the sorbent (during run 5) and yielded the chlorinated hydrocarbons in liquid products. X-ray diffraction studies revealed that the calcium carbonate sorbent was converted into calcium chloride during the pyrolysis process. The calcium-based sorbent was successfully utilized for the removal of chlorine content (inorganic and organic) from the pyrolysis process (PVC/PP/PE/PS:1/3/3/3) and produced halogen-free liquid products for 4 consecutive batch processes. The liquid products can be used as a fuel oil or feedstock in refinery.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalEnergy and Fuels
Volume17
Issue number1
DOIs
Publication statusPublished - Jan 2003

Fingerprint

Dechlorination
Liquefaction
Sorbents
Polyvinyl Chloride
Polyvinyl chlorides
Calcium
Plastics
Pyrolysis
Calcium Carbonate
Calcium carbonate
Chlorinated Hydrocarbons
Liquids
Hydrochloric Acid
Chlorine Compounds
Fuel Oils
Hydrogen
Calcium Chloride
Calcium chloride
Halogens
Chlorine

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Bhaskar, T., Uddin, A., Kaneko, J., Kusaba, T., Matsui, T., Muto, A., ... Murata, K. (2003). Liquefaction of mixed plastics containing PVC and dechlorination by calcium-based sorbent. Energy and Fuels, 17(1), 75-80. https://doi.org/10.1021/ef020091g

Liquefaction of mixed plastics containing PVC and dechlorination by calcium-based sorbent. / Bhaskar, Thallada; Uddin, Azhar; Kaneko, Jun; Kusaba, Toshiaki; Matsui, Toshiki; Muto, Akinori; Sakata, Yusaku; Murata, Katshuhide.

In: Energy and Fuels, Vol. 17, No. 1, 01.2003, p. 75-80.

Research output: Contribution to journalArticle

Bhaskar, T, Uddin, A, Kaneko, J, Kusaba, T, Matsui, T, Muto, A, Sakata, Y & Murata, K 2003, 'Liquefaction of mixed plastics containing PVC and dechlorination by calcium-based sorbent', Energy and Fuels, vol. 17, no. 1, pp. 75-80. https://doi.org/10.1021/ef020091g
Bhaskar, Thallada ; Uddin, Azhar ; Kaneko, Jun ; Kusaba, Toshiaki ; Matsui, Toshiki ; Muto, Akinori ; Sakata, Yusaku ; Murata, Katshuhide. / Liquefaction of mixed plastics containing PVC and dechlorination by calcium-based sorbent. In: Energy and Fuels. 2003 ; Vol. 17, No. 1. pp. 75-80.
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