Title:
ENRICHMENT AND PURIFICATION DEVICE FOR SINGLE GAS IN MIXED GAS
Document Type and Number:
WIPO Patent Application WO/2020/224304
Kind Code:
A1
Abstract:
Provided in the present invention is an enrichment and purification device for a single gas in a mixed gas, comprising: a pre-purification cold trap which is capable of freezing and adsorbing a portion of target external gases in a mixed gas, and which is provided with a mixed gas inlet for the mixed gas to enter; an enrichment cold/hot trap, in which molecular sieves of different specifications are detachably filled, a gas inlet of the enrichment cold/hot trap being connected to a gas outlet of the pre-purification cold trap by means of a first switch valve; a freezing apparatus used for reducing the temperature of the enrichment cold/hot trap; a vacuum acquisition system used for enabling the enrichment and purification device to reach a preset vacuum degree and enabling other target external gases that are not adsorbed in the mixed gas to be discharged out of the enrichment cold/hot trap, a pumping port of the vacuum acquisition system being connected to a gas outlet of the enrichment cold/hot trap; a heating apparatus used for heating the enrichment cold/hot trap to completely release the target gas adsorbed by the enrichment cold/hot trap; and a purification output port connected to the gas outlet of the enrichment cold/hot trap by means of a second switch valve. The extraction and purification of a single gas in a mixed gas of different molecular weights is achieved.
More Like This:
Inventors:
GONG BING (CN)
ZHENG YONGFEI (CN)
ZHENG YONGFEI (CN)
Application Number:
PCT/CN2020/073416
Publication Date:
November 12, 2020
Filing Date:
January 21, 2020
Export Citation:
Assignee:
UNIV SCIENCE & TECHNOLOGY CHINA (CN)
International Classes:
G01N33/00; B01D53/00; B01D53/02; G01N1/34
Foreign References:
| CN110095575A | 2019-08-06 | |||
| CN103048412A | 2013-04-17 | |||
| CN108226322A | 2018-06-29 | |||
| CN105347305A | 2016-02-24 | |||
| CN103499662A | 2014-01-08 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
Download PDF: