Patent ID: 6360547
Filing Date: 2002-03-26
Classification: B29B,B29K,B29L,F25B,Y02W

Abstract:
A continuous flow apparatus for preparing materials that have to be frozen or embrittled comprisingfirst compression means for compressing ambient air; first cooling means for cooling the compressed air to ambient temperatures; second compressor means for further compressing the air to an elevated pressure at a multiple of the air compressed by said first compressor; a second cooling means coupled to said second compressor for cooling the air to ambient temperature; means for removing water and CO2 from the compressed air; expansion means coupled to the output of said second cooling means for allowing the air to expand and cool to cryogenic temperatures; a material holding chamber having a material outflow at its bottom and a material input at its top; and wherein said cryogenic air is fed into the bottom of said chamber adjacent to the material output so that said cryogenic air will purge through the material to the top of said chamber as the material moves downwardly through the chamber to its output.