APPARATUS FOR RECYCLING OF OLD RUBBER TYRES AND OTHER PRODUCTS OF POLYMER MATERIALS THROUGH OXYGEN-FREE PYROLYSIS IN A CONNECTED CONTINUOUSLY OPERATING SYSTEM

摘要

Apparatus for recovery of old rubber tyres and other products of polymer materials through oxygen-free pyrolysis in a connected continuously operating system. As the pyrolysis process means exposing of hydro-carbonaceous materials temperatures up to about 900 degrees C and moreover involves strongly degreasing carbon black as one of the degrading products, it is necessary to emphasise the safety and environmental protection questions at the analysis and determination of the technical solutions and the overall functionality at all potential operation conditions for the complete apparatus. This has generally been taken care of by drying and preheating of the supported material by the oxygen-poor gases from the heating plant for the pyrolysis process, choice of safely functioning self-inerting locks at the in- and outlets of the slightly over-pressurised pyrolysis oven, directly connected crushing section for the carbon black residual with simultaneous separation of the steel armament and other solid end products and finally the integration of all co-operating elements to a tight standardised module also suited for modularised assemblies for increased capacities. Dispatch of all recovered products - Oil (about 40 weight.% of the supplied tyre quantity), Carbon black (45 %), Gas (10 %), further Steel armament and other remainders can easily be effectuated from separated hold-up storages at minimum manual action and environmental disturbances. The apparatus affords the flexibility to process whole tyres as well as cut and fragmented tyres and other products of polymer materials. The apparatus is controlled and supervised by a comprehensive computerised system and fabricated in standardised prefabricated modules for rational maintenance and international container based deliveries.