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BIBTEX RIS

Estudo termogravimétrico do efeito da temperatura e da atmosfera na absorção de dióxido de enxofre por calcário

2006; Brazilian Chemical Society; Volume: 29; Issue: 6 Linguagem: Inglês

10.1590/s0100-40422006000600019

ISSN

1678-7064

Autores

Ivonete Ávila, Paula Manoel Crnkovic, Fernando Eduardo Milioli,

Tópico(s)

Thermal and Kinetic Analysis

Resumo

BY LIMESTONE.Thermogravimetry was applied to investigate the effects of temperature and atmosphere on conversion of sulfur dioxide (SO 2 ) absorbed by limestone.Ranges of temperature and particle size were studied, typical of fluidizedbed coal combustion.Isothermal experiments were performed at different temperatures (between 750 and 950 o C) under local atmospheric pressure (~ 697 mmHg) in dynamic atmospheres of air and nitrogen.The maximum conversion was 29% higher in nitrogen atmosphere than in air atmosphere.The optimum conversion temperature was found at 831 o C in air atmosphere and at 894 o C in nitrogen atmosphere.

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