Method of and apparatus for recovering foaming gas of the foamed material
US5769333A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1997 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Feb 24, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.