Enhancement of SO2 sorption on lime by structure modifiers

Farhang Shadman, P. E. Dombek

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The presence of certain inert compounds in lime can improve the rate and the final limiting conversion significantly during the lime SO2 reaction. This physical effect is primarily due to modification of porosity. In particular, the enhancement appears to be due to increase in macro-porosity and macro-pore diffusivity; this in turn increases the sulfation rate and decreases pore plugging. In certain lime application processes, these compounds (structure modifiers) can be added to lime as beneficial additives to promote the reaction. Experimental data on the effect of kaolin, silica and bauxite as structure modifiers are presented. A theoretical model is developed which explains the observed effects both qualitatively and quantitatively.

Original languageEnglish (US)
Pages (from-to)930-935
Number of pages6
JournalCanadian Journal of Chemical Engineering
Volume66
Issue number6
StatePublished - Dec 1988

Fingerprint

Lime
Sorption
Macros
Porosity
Kaolin
Aluminum Oxide
Silicon Dioxide
Silica
lime

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Enhancement of SO2 sorption on lime by structure modifiers. / Shadman, Farhang; Dombek, P. E.

In: Canadian Journal of Chemical Engineering, Vol. 66, No. 6, 12.1988, p. 930-935.

Research output: Contribution to journalArticle

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