Treatment of municipal solid waste

Details Treatment of municipal solid waste Treatment of municipal solid waste

2007-06-05

2007-06-05

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Processes

With heating or cooling of material

C241S025000, C241S065000, C241S101200, C209S003000, C209S011000

Reexamination Certificate

active

10513203

ABSTRACT:
An apparatus and process for the separation, recovery and recycling of municipal solid waste (MSW) in which hot water48is added to shredded and homogenized MSW2as it enters a rotating feed preparation drum34equipped with internal lifter blades36. The blades36and rotation of the drum34cause mixing and pulping of the MSW before discharge into a rotating thermal processor56also equipped with lifter blades58and cone section64, and in which the moist MSW2is heated by heating the hot gases in the processor by a flame from burner62which converts the moisture in the MSW to steam. The steam permeates through the MSW as it is turned and lifted in the thermal processor56, causing further pulping. The now cooked and treated MSW2is then fed to a conveyor68for transportation to a trommel screen for the separation of recyclable components. In a preferred embodiment plugs70, 72of MSW are maintained at the exit and entrance to the thermal processor56and act to provide a seal to maintain and control the temperature within the thermal processor56by reducing the egress of steam therefrom.

REFERENCES:
patent: 5190226 (1993-03-01), Holloway
patent: 5556445 (1996-09-01), Quinn et al.
patent: 5795479 (1998-08-01), Vogt et al.
patent: 0 393 231 (1990-10-01), None

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