PROCESS AND APPARATUS FOR ESTABLISHING VACUUM INSULATION UNDER CRYOGENIC CONDITION

Title:

PROCESS AND APPARATUS FOR ESTABLISHING VACUUM INSULATION UNDER CRYOGENIC CONDITION

Document Type and Number:

WIPO Patent Application WO/2018/119831

Kind Code:

A1

Abstract:

A process for establishing vacuum insulation under cryogenic condition and an apparatus compatible with such process are described. When an insulation enclosure filled with high purity CO2 is evacuated to around 100 absolute Pa at ambient temperature, hard vacuum of below 1 absolute Pa may be automatically obtained within the insulation enclosure when temperature drops to around or below -170℃. This process can be employed to provide vacuum insulation for cold box housing air separation units operated under cryogenic condition.

Inventors:

BRIGLIA ALAIN (CN)
GUERET VINCENT (CN)
CHEN REN (CN)

Application Number:

PCT/CN2016/112920

Publication Date:

July 05, 2018

Filing Date:

December 29, 2016

Export Citation:

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Assignee:

AIR LIQUIDE (FR)
BRIGLIA ALAIN (CN)
GUERET VINCENT (CN)
CHEN REN (CN)

International Classes:

F16L59/06

Foreign References:

KR20100097936A	2010-09-06
US3812886A	1974-05-28
JP2008144929A	2008-06-26
EP0412715A1	1991-02-13

Other References: