System and method for controlled supply of commingled plastic from municipal solid waste (MSW) to an in-vessel and obtaining oil/liquid fuel of consistent

摘要

A system for the controlled supply and processing of commingled plastic comprising: an in-vessel 18 comprising: a cylindrical inner vessel, an oval outer vessel/jacket and a heating means, a burner, located in the outer vessel/jacket; a feeding hopper 16 and feeding screw 17 that supply the plastic to the in-vessel in a controlled manner; a heavy density separator 14 for separating vapour from wax; a venturi scrubber 10 for receiving and cooling the light vapours of the plastic and condensing the vapours into oil; a sludge screw conveyor 20 for removal of sludge from the in-vessel and a distillation column for receiving the oil from the scrubber and separating the oil into light oil with a low flash point and a residue wherein the residue is refuse-derived fuel (RDF). The feeding hopper 16 comprises a first pair of feed rollers and a second pair of feed rollers disposed below the first pair of feed rollers; all the feed rollers have paddles configured thereon. The in-vessel 18 comprises a feeding duct having an inverted cone shape and the plastic in the in-vessel is heated to a temperature between 400°C and 600°C.