DEVICE FOR AIR LOW-TEMPERATURE SEPARATION

The low temperature air fractionation system consists of an air compressor, whose outlet is interconnected, via an absorption purifying block, to a low temperature block with heat exchangers and colons for dual rectification and an expansion turbine, retarded by a compressor. It is characteristic of the system that between the air outlet from the compressor and the absorption purifying block there is a retarding compressor directly connected with the expansion turbine, whose outlet is interconnected, via heat exchangers, with the inlet into the air compressor. The inlet into the turbine is further interconnected, via a step-down valve, with the lower rectification colon, and, via the heat exchanger, with the outlet from the absorption block.