Development of a new dry flue gas desulfurization process utilizing calcium silicate hydrate in waste concrete

Iizuka Atsushi, Yamasaki Akihiro, Yanagisawa Yukio

Research output: Contribution to conferencePaperpeer-review

Abstract

The reaction kinetics of SO2 removal was studied by laboratory-scale experiments to examine the potential desulfurization efficiency by the waste cement particles. Desulfurization experiments for Ca(OH) 2 and calcium carbonate (CaCO3) were also conducted under the same conditions for comparison. Laboratory experimental studies showed that the waste cement particles have a sufficiently high reaction rate with gaseous SO2, under the temperature conditions of 30 - 400°C. The waste cement would be applicable for the desulfurization process, especially under the lower temperature conditions such as 30°C, under which the desulfurization rate is comparable with that of calcium hydroxide, which has been commonly used as a desulfurization agent but much more expensive than the waste cement. The use of waste cement would be a promising option for a dry desulfurization process.

Original languageEnglish
Pages5689-5692
Number of pages4
Publication statusPublished - 2005 Dec 1
Externally publishedYes
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: 2005 Oct 302005 Nov 4

Other

Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
CountryUnited States
CityCincinnati, OH
Period05/10/3005/11/4

ASJC Scopus subject areas

  • Engineering(all)

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