Constant-pattern solutions of fixed-bed hydriding processes with a material having a plateau pressure on equilibrium isotherm

Satoshi Fukada, Nobuo Mitsuishi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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-ymdiagram, 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.

Original languageEnglish
Pages (from-to)609-614
Number of pages6
JournalJOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Volume24
Issue number5
DOIs
Publication statusPublished - 1991

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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