Thermogravimetric analysis of sulfation kinetics of calcined limestones or dolomites

Fan, Liang‐Shih; Satija, Sunil; Wilson, W.I.; Fee, D.C.; Myles, K.M.; Johnson, I.

doi:10.1016/0300-9467(84)85051-0

Cited by 8 publications

(2 citation statements)

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“…Fan et al 1 utilized a TGA unit to determine both the reaction rate and the capacity of different sorbents (limestone and dolomite) at 850 °C. The sorbent particle size was in the range of 90 u.m to 1000 ujn.…”

Section: Discussionmentioning

confidence: 99%

On the Intrinsic High Temperature Calcium Oxide-Sulfur Dioxide Reaction Using the Vacuum Thermogravimetric Analysis Technique

Chen

Bjerle²

1996

Journal of the Air & Waste Management Association

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The high temperature CaO/SO2 reaction was studied using four Swedish limestones and one dolomite as sorbents. The measurements were carried out in a vacuum thermogravimetric analysis (TGA) apparatus in order to investigate the intrinsic reaction mechanism. The reaction was found to be fast at the beginning due to the surface reaction, while the subsequent stage was controlled by the product layer diffusion, showing a lower reaction rate. The reaction rate increased as temperature increased up to 1000 °C in the range tested. SO2 partial pressure weakly affected the reaction. The fine sorbent particles used in the study resulted in the high CaO conversion. Further grinding of the sorbents gave a small increase in CaO conversion. Sintering generally decreased the initial reactivity but might not affect the ultimate CaO capacity. The larger pores in nascent CaO particles were valuable for the initial reaction conversion.

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Section: Discussionmentioning

confidence: 99%

On the Intrinsic High Temperature Calcium Oxide-Sulfur Dioxide Reaction Using the Vacuum Thermogravimetric Analysis Technique

Chen

Bjerle²

1996

Journal of the Air & Waste Management Association

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“…In order for the reaction to proceed the gas must be transported through this product layer and this adds another diffusional process which must be considered. Fan et al (1984) Effect of Pare Structure product) as occurring in parallel. More realistically it may be anticipated (Szekery et at, 1976) that the two processes are in series.…”

Section: ·>«»> -mentioning

confidence: 98%

Mathematical Modelling of Gas-Solid Reactions: Effect of Pore Structure

Bhatia¹,

Gupta²

1992

Reviews in Chemical Engineering

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Combined calcination, sintering and sulfation model for CaCo₃‐SO₂ reaction

et al. 1999

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Thermogravimetric analysis of sulfation kinetics of calcined limestones or dolomites

Cited by 8 publications

References 23 publications

On the Intrinsic High Temperature Calcium Oxide-Sulfur Dioxide Reaction Using the Vacuum Thermogravimetric Analysis Technique

On the Intrinsic High Temperature Calcium Oxide-Sulfur Dioxide Reaction Using the Vacuum Thermogravimetric Analysis Technique

Mathematical Modelling of Gas-Solid Reactions: Effect of Pore Structure

Combined calcination, sintering and sulfation model for CaCo₃‐SO₂ reaction

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Thermogravimetric analysis of sulfation kinetics of calcined limestones or dolomites

Cited by 8 publications

References 23 publications

On the Intrinsic High Temperature Calcium Oxide-Sulfur Dioxide Reaction Using the Vacuum Thermogravimetric Analysis Technique

On the Intrinsic High Temperature Calcium Oxide-Sulfur Dioxide Reaction Using the Vacuum Thermogravimetric Analysis Technique

Mathematical Modelling of Gas-Solid Reactions: Effect of Pore Structure

Combined calcination, sintering and sulfation model for CaCo3‐SO2 reaction

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Combined calcination, sintering and sulfation model for CaCo₃‐SO₂ reaction