引用本文:
钟秦. CaO与SO2反应的热重法研究[J]. 应用化学,
1995, 12(3): 36-39.
Citation: Zhong Qin. Thermogravimetric Study on the Reaction of CaO with SO2[J]. Chinese Journal of Applied Chemistry, 1995, 12(3): 36-39.
Citation: Zhong Qin. Thermogravimetric Study on the Reaction of CaO with SO2[J]. Chinese Journal of Applied Chemistry, 1995, 12(3): 36-39.
CaO与SO2反应的热重法研究
English
Thermogravimetric Study on the Reaction of CaO with SO2
Abstract:
The high temperature sulfation of CaO with SO2 has been investigated by TG method under vacuum. Experimental data indicated that the sulfation process was a two-stage reaction, a very fast surface reaction with an activation energy of 36.7kJ/mol followed by a product-layer diffusion controlled reaction with an activation energy of 75.2kJ/mol. The initial period was about 7s. This process of sulfation was affected by limestone type, micro structure, particle size and temperature, while the SO2 concentration hardly affected the sulfation. A 59% CaO conversion was achieved in 30s at 1000℃ and 1×102pa.
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Key words:
- SO2
- / limestone
- / sulfation
- / thermogravimetry
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