Highly attrition-resistant zinc oxide-based sorbents for H2S removal by spray-drying technique

Joong B. Lee, Jeom In Baek, Chong K. Ryu, Chang K. Yi, Sung H. Jo, Sung H. Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A ZnO-based sorbent, ZAC 32N, applicable to transport reactors was successfully prepared by the spray-drying technique. Another sorbent, ZAC 32SU, was prepared by scale-up preparation of ZAC 32N sorbent. The physical properties of the sorbents such as attrition resistance, specific surface area, pore volume, and particle size were extensively characterized and exhibited a good potential for use in transport applications. The chemical reactivity tested in the thermogravimetric analyzer and microreactor exhibited desirable characteristics for effective desulfurization of syngas streams in the range of 450-550 °C. Bench-scale tests for the sorbent ZAC 32SU were performed for a continuous 160 h with a steady solid circulation of 54.6 kg/h. The results showed 99.5%+ desulfurization at 500-550 °C and reasonable regenerability at 550-620 °C. Test results on the physical properties and chemical reactivity indicated that the performance of developed sorbents proved to be outstanding.

Original languageEnglish
Pages (from-to)4455-4464
Number of pages10
JournalIndustrial and Engineering Chemistry Research
Volume47
Issue number13
DOIs
Publication statusPublished - 2008 Jul 2

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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