Effect of Various Temperature Distributions at a Boundary for the Cylindrical stream Reformer

Title
Effect of Various Temperature Distributions at a Boundary for the Cylindrical stream Reformer
Authors
김석한훈식김서영현재민
Keywords
Steam Reforming; hydrogen Production; Boundary Temperature Distribution; 수증기 개질; 수소 생산; 경계 온도 분포
Issue Date
2010-11
Publisher
2010 대한기계학회 추계학술대회
Citation
, 1-6
Abstract
Numerical solutions are made of a cylindrical steam reformer for hydrogen production with various boundary temperature distributions. The one-medium approach model which is suitable to porous medium for steady state is adopted as describing the catalytic fixed bed in the reformer. CH4, H2O, CO, H2 and CO2 are formed and destructed by the Steam Reforming(SR) reaction, the Water-Gas Shift(WGS) reaction and the Direct Steam Reforming(DSR) reaction that make changes of temperature and concentration at the computational node. The reformer having various boundary temperature distributions of constant, linear and cubic shapes has the different yield rate of hydrogen in each case. In case of linear temperature distribution having more weight of boundary temperature distribution at an inlet, production of hydrogen is accelerated near an inlet and the yield rate is increased because an endothermic reaction actively occurs near an inlet at which there are many reactants of SR and DSR.
URI
http://pubs.kist.re.kr/handle/201004/38531
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KIST Publication > Conference Paper
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