Invention Grant
- Patent Title: Method and appliance for separating air by cryogenic distillation
- Patent Title (中): 通过低温蒸馏分离空气的方法和设备
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Application No.: US13576230Application Date: 2011-02-03
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Publication No.: US09140491B2Publication Date: 2015-09-22
- Inventor: Benoit Davidian
- Applicant: Benoit Davidian
- Applicant Address: FR Paris
- Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude
- Current Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude
- Current Assignee Address: FR Paris
- Agent Justin K. Murray
- Priority: FR1050775 20100204
- International Application: PCT/FR2011/050212 WO 20110203
- International Announcement: WO2011/095739 WO 20110811
- Main IPC: F25J3/00
- IPC: F25J3/00 ; F25J3/04
Abstract:
In a method for separating air in a column system, by cryogenic distillation, compressed, purified and cooled air is separated in the column system in order to form an oxygen-enriched flow and a nitrogen-enriched flow. At least one column of the column system contains a vaporizer-condenser for ensuring the vaporization of a liquid enriched in oxygen in relation to the air by means of heat exchange with a calorigenic fluid, the calorigenic fluid having been compressed upstream of the vaporizer-condenser in a compressor having a cryogenic inlet temperature, the calorigenic fluid being at least partially condensed in the vaporizer-condenser, and a cryogenic liquid is added to the calorigenic fluid upstream of the vaporizer-condenser.
Public/Granted literature
- US20120297823A1 METHOD AND APPLIANCE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION Public/Granted day:2012-11-29
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