Title:
METHOD FOR PREPARING HYDROGEN FROM AMMONIA BY USING PRESSURE SWING ADSORPTION
Document Type and Number:
WIPO Patent Application WO/2023/090752
Kind Code:
A1
Abstract:
A method for preparing hydrogen from ammonia by using pressure swing adsorption (PSA) is provided. The method for preparing hydrogen from ammonia, of the present invention, comprises the steps of: generating hydrogen and nitrogen from ammonia gas through a high-temperature reaction by using a catalyst; performing purification by selectively adsorbing unreacted ammonia gas from a gas containing unreacted ammonia and low-purity hydrogen and nitrogen, which are supplied through the high-temperature reaction and cooled; and performing purification by separating high-purity hydrogen from the gas consisting of low-purity hydrogen and nitrogen, wherein purification is carried out by using a carbon molecular sieve (CMS) adsorbent so as to desorb the unreacted ammonia gas through PSA.
Inventors:
AHN CHI-KYU (KR)
RHEE CHANG-HOUN (KR)
KIM GOOK-HEE (KR)
LEE MAN-SU (KR)
PARK HAI-WOONG (KR)
KIM BEOM-SIK (KR)
SON SEONG-MIN (KR)
RHEE CHANG-HOUN (KR)
KIM GOOK-HEE (KR)
LEE MAN-SU (KR)
PARK HAI-WOONG (KR)
KIM BEOM-SIK (KR)
SON SEONG-MIN (KR)
Application Number:
PCT/KR2022/017598
Publication Date:
May 25, 2023
Filing Date:
November 10, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
RES INST IND SCIENCE & TECH (KR)
RES INST IND SCIENCE & TECH (KR)
International Classes:
C01B3/04; B01D53/047; C01B3/56
Foreign References:
| CN1153135A | 1997-07-02 | |||
| KR102247199B1 | 2021-05-04 | |||
| CN1087319A | 1994-06-01 | |||
| US20190366260A1 | 2019-12-05 | |||
| JP2009035458A | 2009-02-19 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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