Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1997-10-31
1999-11-09
Doerrler, William
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62903, F25J 304
Patent
active
059791829
ABSTRACT:
Disclosed is a technique which makes it possible to restrain as much as possible the pressure loss, in particular, the pressure of return gas, generated in the main heat exchanger actually used when performing air separation and to reduce the power of the material air compressor as much as possible. In an air separation method of the type in which compressed air cooled through a main heat exchanger is supplied to a lower column of a rectifying tower equipped with upper and lower columns and in which return gas from the upper column of the rectifying tower is passed through the main heat exchanger to utilize it to cool the compressed air, an open end passage is provided in the main heat exchanger, and wherein the return gas is entirely or partly caused to flow through the open end passage, whereby a reduction in the pressure loss of the return gas is achieved.
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Goto Masahiro
Natani Shuhei
Tanaka Masayuki
Doerrler William
Kabushiki Kaisha Kobe Seiko Sho
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