Title:
PROCESS FOR THE SEPARATION OF AIR BY CRYOGENIC DISTILLATION
Document Type and Number:
WIPO Patent Application WO/2014/053297
Kind Code:
A3
Abstract:
A process for the separation of air by cryogenic distillation operates either with a product ratio greater than 2.5, in which case nitrogen enriched liquid is sent from a storage tank (27) to the column system and nitrogen enriched gas (29) from the column system is compressed in a first compressor (33) having an inlet temperature of less than -50°C and then warmed in the heat exchanger, or with a product ratio less than 2.5, in which case a second nitrogen rich gas removed from the column system is expanded in a turbine (73) having an inlet temperature lower than the ambient temperature or liquefied in a liquefier and nitrogen enriched liquid (57) is sent to the storage tank from the outlet of the turbine and/or from the column system and/or from the liquefier.
Inventors:
DAVIDIAN BENOIT (FR)
DUBETTIER-GRENIER RICHARD (FR)
PEYRON JEAN-MARC (FR)
SAULNIER BERNARD (FR)
DUBETTIER-GRENIER RICHARD (FR)
PEYRON JEAN-MARC (FR)
SAULNIER BERNARD (FR)
Application Number:
PCT/EP2013/068965
Publication Date:
November 19, 2015
Filing Date:
September 13, 2013
Export Citation:
Assignee:
AIR LIQUIDE (FR)
International Classes:
F25J3/04
Foreign References:
| US20050132746A1 | 2005-06-23 | |||
| FR2819046A1 | 2002-07-05 | |||
| JPS5261171A | 1977-05-20 | |||
| DE19803437A1 | 1999-03-18 | |||
| US20080115531A1 | 2008-05-22 | |||
| US20060010912A1 | 2006-01-19 |
Attorney, Agent or Firm:
MERCEY, Fiona (Direction de la Propriété Intellectuelle7, Quai d'Orsay Paris Cedex 07, FR)
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