FIELD: methods and devices for depolymerization of secondary plastics and plastic wastes. SUBSTANCE: device includes closed reactor and circulating system connected to this reactor and used for moderate heating of reactor content. Prior to delivery of reactor content to discharge pipe line, it passes through raising section integrated in reactor for separation of coarse solid particles at higher rate of settling, as a result, only solid particles at low tendency to sedimentation are pumped through circulating loop. Erosion in circulating system is practically absent. EFFECT: enhanced efficiency. 22 cl, 5 dwg
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