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A plastic liquefaction process which features a combination of thermal and catalytic cracking has been developed. The process can charge polyethylene, poly(propylene) or polystyrene and produces relatively low pour and highly aromatic liquid at a yield of about 85 %. Based on laboratory development a 500 ton per year prototype unit has been constructed and operated successfully both for testing and further development. An additional 1000 ton per year prototype unit is in the design phase and is scheduled for operation in 1992. The salient aspects of the process are described.
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Hirota et al. (1992) studied this question.
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