共 29 条
H2 recovery and CO2 capture after water-gas shift reactor using synthesis gas from coal gasification
被引:15
作者:
Lee, Sung-Wook
[1
,3
]
Park, Jong-Soo
[1
]
Lee, Chun-Boo
[1
,3
]
Lee, Dong-Wook
[1
]
Kim, Hakjoo
[2
]
Ra, Ho Won
[2
]
Kim, Sung-Hyun
[3
]
Ryi, Shin-Kun
[1
]
机构:
[1] KIER, Energy Mat & Convergence Res Dept, Taejon 305343, South Korea
[2] KIER, Greenhouse Gas Dept, Taejon 305343, South Korea
[3] Korea Univ, Dept Chem & Biol Engn, Seoul 136701, South Korea
来源:
关键词:
Pd-based membrane;
Module CCS;
Coal;
gasification;
WGS;
COMPOSITE MEMBRANE;
CARBON-DIOXIDE;
HYDROGEN;
TECHNOLOGY;
DIFFUSION;
PALLADIUM;
MIXTURE;
STORAGE;
MODULE;
D O I:
10.1016/j.energy.2014.01.043
中图分类号:
O414.1 [热力学];
学科分类号:
摘要:
In this study, a combined test of the WGS (water gas shift) reactor and a Pd-based composite membrane was carried out for pre-combustion CO2 capture in a coal gasifier. The two series of WGS reactions, i.e., a high-temperature shift and a low-temperature shift, were performed under a gas composition of 60% CO and 40% H-2 at 2100 kPa to imitate coal gasification. The CO2 enrichment and H-2 recovery tests at 673 K and 2100 kPa with the high-pressure membrane module after the WGS reaction presented the enriched CO2 concentration and H-2 recovery ratios of similar to 92% and similar to 96%, respectively. The long-term stability test showed that the CO2 concentration decreased to 78.2%, and CO was generated and reached to 8.8% in the retentate stream after 47 h because of reverse WGS and CO2 hydrogenation reaction on 316L stainless steel module. The stability test for similar to 3137 h showed that these catalytic activities could be successfully prevented using steel with higher Cr and Ni contents, such as 310S. The WGS-membrane combination test using the outlet gas from a real coal gasifier was continued for similar to 100 h and showed that the WGS catalysts and membrane module made of 310S would be stable under real conditions. (C) 2014 Elsevier Ltd. All rights reserved.
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页码:635 / 642
页数:8
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