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Title:
SYSTEM AND METHOD FOR SUPPLYING BACKUP PRODUCT IN AIR SEPARATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/127009
Kind Code:
A1
Abstract:
A system and method for supplying a backup product in an air separation device, as well as a system and method for supplying a lower-pressure product to a user by means of pressurization of a cryogenic liquid pump (2) during normal operation of an air separation device, i.e., when the cryogenic liquid pump (2) is in the cold standby state. By means of the system and method, a cryogenic liquid product taken from a storage tank (1) is pressurized by the cryogenic liquid pump (2) to produce a lower-pressure product by taking full advantage of the low-speed operation of the cryogenic liquid pump (2) in the cold standby state, and the lower-pressure product is transmitted to product supply lines (7, 8) of a user, to achieve the function of supplying the lower-pressure product to the user. The system and method not only reduce the energy loss of the cryogenic liquid pump (2) in the cold standby state for a long time, but also avoid the bleeding rate of the cryogenic liquid product generated by sending a part of the cryogenic liquid product back to the storage tank (1), so that the advantage of quickly starting the cryogenic liquid pump (2) from the cold standby state is ensured, and the requirements of the user to the higher-pressure product and the lower-pressure product can be satisfied.

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Inventors:
ZHENG HAOZHUAN (CN)
GAO FEI (CN)
Application Number:
PCT/CN2017/118596
Publication Date:
July 04, 2019
Filing Date:
December 26, 2017
Export Citation:
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Assignee:
AIR LIQUIDE (FR)
ZHENG HAOZHUAN (CN)
GAO FEI (CN)
International Classes:
F25J3/04
Foreign References:
US20060010909A12006-01-19
CN105043013A2015-11-11
JP2013170623A2013-09-02
CN106839652A2017-06-13
CN203837412U2014-09-17
CN1795359A2006-06-28
CN202420113U2012-09-05
Other References:
See also references of EP 3734206A4
Attorney, Agent or Firm:
SUNSHINEIP INTELLECTUAL PROPERTY LAW FIRM (CN)
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