用于甲烷偶联的SrCe0.95Yb0.05O3-α中空纤维膜反应器建模

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用于甲烷偶联的SrCe0.95Yb0.05O3-α中空纤维膜反应器建模

谭小耀^a; 杨乃涛^a; K.Li^b

^a Fuel Cell Research Center, Shandong University of Technology, Zibo 255012, China
^b Department of Chemical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY,
U.K.

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-06-28 发布日期:2003-06-28

Modeling of a SrCe0.95Yb0.05O3-α Hollow Fibre Membrane Reactor for Methane Coupling

TAN Xiaoyao^a; YANG Naitao^a; K.Li^b

^a Fuel Cell Research Center, Shandong University of Technology, Zibo 255012, China
^b Department of Chemical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY,
U.K.

Received:1900-01-01 Revised:1900-01-01 Online:2003-06-28 Published:2003-06-28

摘要/Abstract

摘要： Proton-hole mixed conductor, SrCe0.95Yb0.05O3-α(SCYb), has the potential to be used as a
mem-brane for dehydrogenation reactions such as methane coupling due to its high C2-
selectivity and its simplicity forfabricating reactor systems. In addition, the mixed
conducting membrane in the hollow fibre geometry is capable ofproviding high surface area
per unit volume. In this study, mechanism of methane coupling reaction on the SCYbmembrane
was proposed and the kinetic parameters were obtained by regression of experimental data. A
math-ematical model describing the methane coupling in the SCYb hollow fibre membrane
reactor was also developed.With this mathematical model, various operating conditions such
as the operation mode, operation pressure andfeed concentrations affecting performance of
the reactor were investigated. The simulation results show that thecocurrent flow in the
reactor exhibits higher conversion of methane and higher yield of ethylene compared to
thecountercurrent flow. In order to achieve the highest C2 yield, especially of ethylene,
pure methane should be usedas feed and the operating pressure be 300kPa. Air can be used as
the source of oxygen for the reaction and itsoptimum feed velocity is twice of the methane
feed velocity. The air pressure in the lumen side should be kept thesame as or slightly
lower than the pressure of shell side.

关键词: hollow fibre membrane;mixed conductor;methane coupling

Abstract: Proton-hole mixed conductor, SrCe0.95Yb0.05O3-α(SCYb), has the potential to be used as a
mem-brane for dehydrogenation reactions such as methane coupling due to its high C2-
selectivity and its simplicity forfabricating reactor systems. In addition, the mixed
conducting membrane in the hollow fibre geometry is capable ofproviding high surface area
per unit volume. In this study, mechanism of methane coupling reaction on the SCYbmembrane
was proposed and the kinetic parameters were obtained by regression of experimental data. A
math-ematical model describing the methane coupling in the SCYb hollow fibre membrane
reactor was also developed.With this mathematical model, various operating conditions such
as the operation mode, operation pressure andfeed concentrations affecting performance of
the reactor were investigated. The simulation results show that thecocurrent flow in the
reactor exhibits higher conversion of methane and higher yield of ethylene compared to
thecountercurrent flow. In order to achieve the highest C2 yield, especially of ethylene,
pure methane should be usedas feed and the operating pressure be 300kPa. Air can be used as
the source of oxygen for the reaction and itsoptimum feed velocity is twice of the methane
feed velocity. The air pressure in the lumen side should be kept thesame as or slightly
lower than the pressure of shell side.

Key words: hollow fibre membrane, mixed conductor, methane coupling

谭小耀, 杨乃涛, K.Li. 用于甲烷偶联的SrCe0.95Yb0.05O3-α中空纤维膜反应器建模[J]. CIESC Journal.

TAN Xiaoyao, YANG Naitao, K.Li. Modeling of a SrCe0.95Yb0.05O3-α Hollow Fibre Membrane Reactor for Methane Coupling[J]. .

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用于甲烷偶联的SrCe0.95Yb0.05O3-α中空纤维膜反应器建模

Modeling of a SrCe0.95Yb0.05O3-α Hollow Fibre Membrane Reactor for Methane Coupling

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