Constant-Pattern Solutions of Fixed-Bed Hydriding Processes with a Material Having a Plateau Pressure on Equilibrium Isotherm

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Nobuo Mitsuishi¹  Satoshi Fukada¹ 

[1] Department of Nuclear Engineering, Kyushu University

关键词: Absorption;    Breakthrough Curve;    Constant Pattern;    Fixed Bed;    Hydriding;    Hydrogen;    Mass Transfer;    Metal Hydride;    Metallic Particle;    Plateau Pressure;   

DOI  :  10.1252/jcej.24.609

来源: Maruzen Company Ltd

【 摘 要 】

References(8)Cited-By(2)A theoretical study of asymptotic solutions (constant-pattern solutions) of fixed-bed hydriding processes is presented for systems with finite longitudinal dispersion in a bed and finite resistances to mass transfer. A closed form of the solutions is obtained under conditions where a metal hydride has a plateau pressure on its equilibrium isotherm. If the equilibrium isotherm does not intersect a straight line connecting two points of an influent condition and an initial one of the bed on an x–ym diagram, a single asymptotic mass transfer zone propagates through the bed. On the other hand, if the isotherm does intersect the line, a twin asymptotic mass transfer zone propagates. Then a plateau zone is formed between the two zones. Application to a titanium hydride bed demonstrates the usefulness of the analytical results on the basis of the asymptotic solutions.

【 授权许可】

Unknown