Combination of a Two-Zone Fluidized Bed Reactor with a Pd hollow fibre membrane for catalytic alkane dehydrogenation

M. P. Gimeno, Z. T. Wu, J. Soler, J. Herguido, K. Li, M. Menéndez*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The combination of a Pd hollow fibre membrane with a Two-Zone Fluidized Bed Reactor (TZFBR) is described for catalytic dehydrogenation of propane. This configuration aims to combine the in situ catalyst regeneration provided by the TZFBR with the increased conversion that can be achieved with a Pd membrane, which removes hydrogen from the reactor, thus enhancing the reaction rate and in theory allowing even higher than equilibrium conversion. The experiments show that the Pd hollow fibre membrane acts effectively removing hydrogen from the reaction media and that with a Pt-Sn/Al2O3 catalyst the TZFBR can achieve steady state operation in spite of the increased coking of the catalyst. However, with this catalyst the quicker coke formation caused by the removal of hydrogen outweighs the beneficial effect of hydrogen removal and the yield achievable for a given feed is lower in the presence of the membrane. A conclusion from these results is that a catalyst with lower coke tendency is needed to apply this combination of Pd membrane and TZFBR.

Original languageEnglish
Pages (from-to)298-303
Number of pages6
JournalChemical Engineering Journal
Volume155
Issue number1-2
DOIs
Publication statusPublished - 1 Dec 2009

Keywords

  • Membrane reactor
  • Pd hollow fibre membrane
  • Propane dehydrogenation
  • Two-Zone Fluidized Bed Reactor

Fingerprint Dive into the research topics of 'Combination of a Two-Zone Fluidized Bed Reactor with a Pd hollow fibre membrane for catalytic alkane dehydrogenation'. Together they form a unique fingerprint.

  • Cite this