Title:
METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION
Document Type and Number:
WIPO Patent Application WO/2022/136060
Kind Code:
A1
Abstract:
In a method for separating air by cryogenic distillation, at least one portion of the first oxygen-enriched liquid (15) is sent from a first column (K01) to a first vaporizer-condenser (E10) where it is partially vaporized in the form of a film at a pressure higher than the second pressure forming a second oxygen-enriched liquid (38) constituting at least 30% of the oxygen-enriched liquid sent to the first vaporizer-condenser and a third oxygen-enriched gas (43), an argon-enriched fluid (19) is sent from a second column (K02) to a third column (K 10) and the fluid is separated in the column forming an argon-rich flow (45) at the top of the column and an oxygen-rich flow (41) at the bottom of the column and the third oxygen-enriched gas is expanded in a turbine (D07) with production of work.
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Inventors:
TRANIER JEAN-PIERRE (FR)
ROZIERES MAXIME (FR)
ROZIERES MAXIME (FR)
Application Number:
PCT/EP2021/085952
Publication Date:
June 30, 2022
Filing Date:
December 15, 2021
Export Citation:
Assignee:
AIR LIQUIDE (FR)
International Classes:
F25J3/04
Foreign References:
| US5469710A | 1995-11-28 | |||
| US20020178747A1 | 2002-12-05 | |||
| GB1523434A | 1978-08-31 | |||
| US5887447A | 1999-03-30 | |||
| US20150121955A1 | 2015-05-07 | |||
| US5469710A | 1995-11-28 | |||
| US5868199A | 1999-02-09 |
Other References:
CHAKRAVARTHY V S ET AL: "Developments in Falling Film Type (Downflow) Reboilers in the Air Separation Industry", vol. P6, ECI Symposium Series, 1 September 2005 (2005-09-01), pages 264 - 272, XP009106672, Retrieved from the Internet
Attorney, Agent or Firm:
MERCEY, Fiona (FR)
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