Title:
CRYOGENIC RECTIFICATION PROCESS-BASED METHOD FOR PRODUCING AIR PRODUCT, AND AIR SEPARATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/127180
Kind Code:
A1
Abstract:
A cryogenic rectification process-based method for producing an air product, and an air separation system. An air product export pipe (113) and a liquid air booster pump (1131) are added in existing cryogenic rectification process equipment; the existing rectification equipment is used to prepare oxygen-enriched liquid air, the raw material air is subjected to pressurization and liquefaction by cooling, the proportions of the raw material air and the oxygen-enriched liquid air can be regulated according to requirements of a client, the pressure is boosted to a target pressure by means of the liquid air booster pump (1131), and after the raw material air is vaporized by means of heat exchange, by a heat exchange device, with a gas or liquid product produced in rectification, a high-pressure or ultra-high-pressure air product is prepared. When oxygen and nitrogen gas or a liquid product is produced by means of rectification, a high-pressure or ultra-high-pressure air product can be provided according to requirements of clients, and there is no need to provide an additional air compressor or passively enhance the exhaust pressure of the air compressor, so that the production costs are greatly reduced, and the energy efficiency level is improved. Particularly, the stability of the apparatus can be further improved when a small amount of the high-pressure/ultra-high-pressure air product is required to be produced.
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Inventors:
ZHAO BOWEI (CN)
BRIGLIA ALAIN (CN)
XUE FENGJIE (CN)
BRIGLIA ALAIN (CN)
XUE FENGJIE (CN)
Application Number:
PCT/CN2017/119240
Publication Date:
July 04, 2019
Filing Date:
December 28, 2017
Export Citation:
Assignee:
AIR LIQUIDE (FR)
ZHAO BOWEI (CN)
BRIGLIA ALAIN (CN)
XUE FENGJIE (CN)
ZHAO BOWEI (CN)
BRIGLIA ALAIN (CN)
XUE FENGJIE (CN)
International Classes:
F25J3/04
Foreign References:
| CN102506559A | 2012-06-20 | |||
| CN103712417A | 2014-04-09 | |||
| CN102230716A | 2011-11-02 | |||
| CN204240704U | 2015-04-01 | |||
| CN106322917A | 2017-01-11 | |||
| EP0618415B1 | 1999-09-29 |
Attorney, Agent or Firm:
SUNSHINEIP INTELLECTUAL PROPERTY LAW FIRM (CN)
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