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CFD를 이용한 촉매 멤브레인 반응기 해석에 관한 연구

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Authors
박정수
Advisor
윤인섭
Issue Date
2003
Publisher
서울대학교 대학원
Keywords
CFD (Computational Fluid Dynamics)Cfd (computational fluid dynamics)수성가스전환반응Water gas shift reaction촉매 멤브레인 반응기Catalytic membrane reactor
Description
학위논문(석사)--서울대학교 대학원 :응용화학부,2003.
Abstract
CFD (Computational Fluid Dynamics) technique can be applied to the
reactor simulation to solve the complex fluid dynamics problems of a
reactor and to consider the optimal design of the reactor. Especially,
the profiles of physical and chemical properties obtained from CFD
simulations play an important role in enhancing the understanding of
the reactor system: CFD simulations furnish more accurate results than
1,2 dimensional ODE-based simulations as the complexity of the
systems increase.
In this research, results of the analysis of a catalytic membrane
reactor for the water gas shift (WGS) reaction are presented and
discussed using CFD technique. Reaction kinetic expressions were
researched, and Langmuir-Hinshelwood kinetic's expression has been
selected to give the best result. The optimal operation temperature was
found out to be 630K. A CFD module for the palladium (Pd) membrane,
separating hydrogen, was also developed, simulated and compared to
the references.
The developed framework easily simulates the effects of the reaction
temperature, pressure, sweep gas flow rate, sweep gas flow direction
and palladium membrane thickness to the CO conversion of the
catalytic membrane reactor. On the basis of these simulations, the
optimal design parameters of a catalytic membrane reactor for WGS
could be obtained. The optimal operating condition for the catalytic
membrane reactor is as following. Time factor is 15,450[g-cat·min/gmole
CO], reaction temperature is 630[K], operating pressure for Plumen
is 3[atm], operating pressure for Psweep=1[atm], sweep gas flow direction is counter-current, sweep gas flow rate is 43.6[ml/min] and
Pd-Ag palladium membrane foil thickness is 75[㎛]. As a result of the
simulation, 92.06% CO conversion was obtained, which is 14.5%
increase compared to the thermodynamic equilibrium conversion.
Results of the analysis are very useful in the commercialization of the
hydrogen-generation process, and the developed simulation framework
is easily adaptable for further design and modification when more
detailed profiles are necessary.
Language
Korean
URI
http://dcollection.snu.ac.kr:80/jsp/common/DcLoOrgPer.jsp?sItemId=000000059677

https://hdl.handle.net/10371/68923
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Theses (Master's Degree_화학생물공학부)
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