Method of and apparatus for recovering foaming gas of the foamed

Solid material comminution or disintegration – Apparatus – With simultaneous control of interrelated feed – drive and/or...

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Details

241DIG38, 241 2418, B02C 700, B02C 2310

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active

056411286

ABSTRACT:
A system including a method and an apparatus is disclosed for effectively separating a foamed heat-insulating material, such as insulated wall sections from used refrigeration equipment, into a foaming gas and a heat-insulating resin without any alteration and recovering them. A peeling portion for peeling a foamed heat-insulating material from a composite material containing the foamed heat-insulating material is included in a crusher provided with a high speed rotor having a plurality of hammers and a casing surrounding the rotor. A sorting portion is provided for sorting the foamed heat-insulating material with a tilting type wind force sorter having a limited tilting angle and a limited height of a wind tunnel. A pulverizing portion is provided for pulverizing the sorted foamed heat-insulating material and for separating a foaming gas therefrom. A condensing portion is provided for cooling and liquefying the separated foaming gas. A compressor is provided for compressing the pulverized non-foaming gas portions of the heat-insulating material for reducing the volume thereof. These recovery steps are accomplished without permitting escape of the foaming gas to the outside of the system.

REFERENCES:
patent: 3561685 (1971-02-01), Feder
patent: 5042724 (1991-08-01), Perry
patent: 5042725 (1991-08-01), Grimmer
patent: 5297741 (1994-03-01), Zurn et al.

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