Thermal methods of the raw material recycling of plastics wast
The present state of technology has been reviewed (mainly German literature 1993—1994) in the field of three principal thermal methods used for the utilization of plastics wastes, namely pyrolysis (high temperature carbonization, coking), hydrocracking (hydrogenization liquefaction), and gasification. These methods allow to conveniently utilize all the products formed in the decomposition of plastics wastes. They avail of the experience acquired in analogous chemical processes applied to fossil fuels (coal, oil) in the plants operated in carbo- and petrochemical industries. Volatile products from thermal utilization of plastics wastes can be used as chemical raw materials or as fuels; solid products can be used either as leaning additives in coals used for coking or as neutral fillers in civil engineering. Under the industrial conditions prevailing in Poland, their use as components of the coal blends to be coked is of particular interest.
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