Reaction phenomena of high-temperature water gas shift reaction in a membrane reactor

Wei Hsin Chen, Ching Wei Tsai, Yu Li Lin, Rei Yu Chein, Ching Tsung Yu

研究成果: Article

9 引文 (Scopus)

摘要

The membrane reactor is a promising device to produce pure hydrogen and enrich CO2 from syngas. To figure out the detailed reaction phenomena of high-temperature water gas shift reaction (WGSR) in a Pd-based membrane reactor, a computational fluid dynamics (CFD) model is developed to simulate the chemical reaction where the feed gas temperature and steam-to-CO molar ratio (S/C ratio) are in the ranges of 400–700 °C and 1–3, respectively. The predictions suggest that the WGSR proceeds from kinetically controlled reaction to thermodynamically governed one when the feed gas temperature increases. The CO conversion at high temperatures can be improved up to 83% when the membrane is in the reactor compared to that without the membrane. This is mainly attributed to the intensification of the membrane's permeance with increasing temperature, even though high temperatures disadvantage CO conversion. The analysis also reveals that the breakthrough in the thermodynamic limit of CO conversion can be achieved in the membrane reactor when the feed gas temperature is higher than 500 °C. The CO conversion in the membrane reactor can be higher than the thermodynamic equilibrium up to 61%.

原文English
頁(從 - 到)358-371
頁數14
期刊Fuel
199
DOIs
出版狀態Published - 2017 一月 1

指紋

Water gas shift
Carbon Monoxide
Membranes
Gases
Temperature
Thermodynamics
Steam
Chemical reactions
Hydrogen
Dynamic models
Computational fluid dynamics

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

引用此文

Chen, Wei Hsin ; Tsai, Ching Wei ; Lin, Yu Li ; Chein, Rei Yu ; Yu, Ching Tsung. / Reaction phenomena of high-temperature water gas shift reaction in a membrane reactor. 於: Fuel. 2017 ; 卷 199. 頁 358-371.
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abstract = "The membrane reactor is a promising device to produce pure hydrogen and enrich CO2 from syngas. To figure out the detailed reaction phenomena of high-temperature water gas shift reaction (WGSR) in a Pd-based membrane reactor, a computational fluid dynamics (CFD) model is developed to simulate the chemical reaction where the feed gas temperature and steam-to-CO molar ratio (S/C ratio) are in the ranges of 400–700 °C and 1–3, respectively. The predictions suggest that the WGSR proceeds from kinetically controlled reaction to thermodynamically governed one when the feed gas temperature increases. The CO conversion at high temperatures can be improved up to 83{\%} when the membrane is in the reactor compared to that without the membrane. This is mainly attributed to the intensification of the membrane's permeance with increasing temperature, even though high temperatures disadvantage CO conversion. The analysis also reveals that the breakthrough in the thermodynamic limit of CO conversion can be achieved in the membrane reactor when the feed gas temperature is higher than 500 °C. The CO conversion in the membrane reactor can be higher than the thermodynamic equilibrium up to 61{\%}.",
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Reaction phenomena of high-temperature water gas shift reaction in a membrane reactor. / Chen, Wei Hsin; Tsai, Ching Wei; Lin, Yu Li; Chein, Rei Yu; Yu, Ching Tsung.

於: Fuel, 卷 199, 01.01.2017, p. 358-371.

研究成果: Article

TY - JOUR

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AU - Chen, Wei Hsin

AU - Tsai, Ching Wei

AU - Lin, Yu Li

AU - Chein, Rei Yu

AU - Yu, Ching Tsung

PY - 2017/1/1

Y1 - 2017/1/1

N2 - The membrane reactor is a promising device to produce pure hydrogen and enrich CO2 from syngas. To figure out the detailed reaction phenomena of high-temperature water gas shift reaction (WGSR) in a Pd-based membrane reactor, a computational fluid dynamics (CFD) model is developed to simulate the chemical reaction where the feed gas temperature and steam-to-CO molar ratio (S/C ratio) are in the ranges of 400–700 °C and 1–3, respectively. The predictions suggest that the WGSR proceeds from kinetically controlled reaction to thermodynamically governed one when the feed gas temperature increases. The CO conversion at high temperatures can be improved up to 83% when the membrane is in the reactor compared to that without the membrane. This is mainly attributed to the intensification of the membrane's permeance with increasing temperature, even though high temperatures disadvantage CO conversion. The analysis also reveals that the breakthrough in the thermodynamic limit of CO conversion can be achieved in the membrane reactor when the feed gas temperature is higher than 500 °C. The CO conversion in the membrane reactor can be higher than the thermodynamic equilibrium up to 61%.

AB - The membrane reactor is a promising device to produce pure hydrogen and enrich CO2 from syngas. To figure out the detailed reaction phenomena of high-temperature water gas shift reaction (WGSR) in a Pd-based membrane reactor, a computational fluid dynamics (CFD) model is developed to simulate the chemical reaction where the feed gas temperature and steam-to-CO molar ratio (S/C ratio) are in the ranges of 400–700 °C and 1–3, respectively. The predictions suggest that the WGSR proceeds from kinetically controlled reaction to thermodynamically governed one when the feed gas temperature increases. The CO conversion at high temperatures can be improved up to 83% when the membrane is in the reactor compared to that without the membrane. This is mainly attributed to the intensification of the membrane's permeance with increasing temperature, even though high temperatures disadvantage CO conversion. The analysis also reveals that the breakthrough in the thermodynamic limit of CO conversion can be achieved in the membrane reactor when the feed gas temperature is higher than 500 °C. The CO conversion in the membrane reactor can be higher than the thermodynamic equilibrium up to 61%.

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