Title:
A METHOD FOR PRODUCING PRESSURIZED GASEOUS OXYGEN THROUGH THE CRYOGENIC SEPARATION OF AIR
Document Type and Number:
WIPO Patent Application WO/2015/095036
Kind Code:
A3
Abstract:
A method is provided for production of gaseous oxygen at moderate pressures by splitting a main air feed (2) into at least three separate streams (3, 4, 6), with the first stream (3) being fed to a heat exchanger (10) and then a column system (20) for rectification; the second stream (4) being further compressed in a warm booster (30), partially cooled in the heat exchanger, expanded in a turbine (35) coupled to the warm booster and then fed to the column system; the third stream (6) being expanded in a warm expander (40) before being introduced to the heat exchanger and introduced to the column system. In certain embodiments, substantially all of the main air feed is eventually introduced to the column system for rectification, resulting in reduced sizing of a main air compressor and improved product recoveries.
Inventors:
MUSICUS PAUL (US)
Application Number:
PCT/US2014/070324
Publication Date:
November 19, 2015
Filing Date:
December 15, 2014
Export Citation:
Assignee:
AIR LIQUIDE (FR)
MUSICUS PAUL (US)
MUSICUS PAUL (US)
International Classes:
F25J3/04
Foreign References:
| US5511381A | 1996-04-30 | |||
| US5806341A | 1998-09-15 | |||
| US5809802A | 1998-09-22 | |||
| US5533339A | 1996-07-09 | |||
| US5355682A | 1994-10-18 |
Attorney, Agent or Firm:
MURRAY, Justin K. et al. (2700 Post Oak Blvd. Suite 32, Houston Texas, US)
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