Combination of preferential CO oxidation and methanation in hybrid MCR (micro-channel reactor) for CO clean-up

Chun Boo Lee, Sung Ho Cho, Dong Wook Lee, Kyung Ran Hwang, Jong Soo Park, Sung Hyun Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

CO in the hydrogen stream must be reduced to extremely low levels, under 10ppm, because the Pt electrode is detrimentally affected by residual CO in the H2 stream. Therefore removal of carbon monoxide from the H2-rich stream during fuel generation from hydrocarbons is a critical challenge, especially for PEMFC (proton exchange membrane fuel cell) applications. Herein, CO an initial concentration of 1.0vol.% was successfully removed from a H2-rich stream to a residual level below 10ppm, within the wide operating temperature range from 92 to 235°C by utilizing a hybrid channel reactor comprising a micro-channel heat exchanger and mini-packed bed reactor. The mini-packed bed reactor contained two kinds of catalysts that promote preferential oxidation and methanation of CO in series. The HMCR (hybrid micro- and mini- channel reactor) offers not only ultimately safe operation but also easy scale-up and is adaptable to mass production of CO clean-up units.

Original languageEnglish
Pages (from-to)421-425
Number of pages5
JournalEnergy
Volume78
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • CO clean-up
  • HMCR (Hybrid micro- and mini- channel reactor)
  • Methanation
  • Preferential oxidation of CO
  • Pt/A-type zeolite
  • Ru/TiO

ASJC Scopus subject areas

  • Energy(all)
  • Pollution

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