THE METHOD OF THERMOCATALYTIC DEPOLYMERIZATION OF WASTE PLASTICS, A SYSTEM FOR THERMOCATALYTIC DEPOLYMERIZATION OF WASTE PLASTICS AND A REACTOR FOR THERMOCATALYTIC DEPOLYMERIZATION OF WASTE PLASTICS

摘要

According to the method of thermocatalytic depolymerization of waste plastics, in the thermocatalytic reactor (6) the reaction mixture in liquid state is stirred and separated into at least two layers, situated at different levels, whereby each of these layers is heated up irrespective of the other, using heating elements principally oriented crosswise with respect to the vertical axis of the reactor, in a favourable embodiment in the form of electric heaters (10) placed in protective tubes grouped in bundles, in a favourable embodiment stabilized with inert gases or metal oxides. A system for thermocatalytic depolymerization of waste plastics is comprised of a secondary depolymerization device (21), in which gaseous products of a catalytic reaction collected from thermocatalytic reactor (6) are subject to depolymerization, whereby the device is connected to the reactor via a connector pipe supplying gaseous products (20) and is connected to fraction condenser (24) via a connector pipe collecting gaseous products (22). A reactor is fitted at least one upper level for dispensing the reaction mixture, located above the reaction mixture surface contained at the bottom of the body (7), which level has the form of perforated dispensing trays (13) or dispensing troughs located crosswise with respect to the vertical axis of the body (7), whereby the reaction mixture at each level has separate heating with heating elements (10) situated in planes which are crosswise to the vertical axis of the body (7), immersed in the bottom layer of the reaction mixture and as close as possible above or below dispensing trays (13), whereby the device used for stirring and raising the liquid to dispensing trays is an electrically driven mixing pump (12), situated to the reactor bottom.