Hybrid Pyrolysis and Gasification Process and System for Converting Wastes

The essential and innovative characters of the proposed solution consists in: 1. the use of a pyrolyser and a gasifying device in series and in a loop; 2. the two most harmful products for the environment, namely tar (condensable tar) and char (a sort of carbon) are gasified with priority. Char, before gasifying, will be subjected to particular mechanical, chemical and electrical washing processes, that separate and stabilise part of the most polluting substances, among which heavy metals (iron, steel, aluminium, copper, etc.) so that the proposed system is, for all purposes, also a method for recovering metals from wastes; 3. there are no polluting emissions into the environment; in fact, wastes, air and possibly water, together with some additives and an auxiliary fuel, when entering the system are completely converted into a "clean" gaseous fuel and into an inert material that will contain, suitably stabilised, the most harmful substances for the environment and possible metals contained in the wastes.