Progress of carbothermal reduction of SO2 to elemental sulfur

doi:10.16085/j.issn.1000-6613.2015.07.015

Abstract

Abstract: Carbothermal reduction of SO₂ to prepare elemental sulfur is a green and sustainable desulfurization technique. In this work, the research progress of this technique was reviewed. The mechanism and the kinetics of the reaction between carbon and SO₂were introduced. The influence factors were also discussed in terms of C/SO₂ molar ratio, reaction temperature, reaction time, reaction atmosphere, form of carbon, and mineral substance. The optimum condition to gain high SO₂ conversation and sulfur yield was obtained, and this work concluded that the reaction between carbon and SO₂ under microwave radiation has remarkable advantage. Therefore, the studies on the exploration of the reaction mechanism and the trends of the products generated are significantly important to the application of this technique.

Key words: sulfur dioxide, reduction, elemental sulfur, microwave radiation, reaction kinetics, activated carbon

摘要： 碳热还原二氧化硫制备硫黄是一种绿色资源化的SO₂治理技术。本文对碳热还原二氧化硫制备硫黄的研究进展进行了综述, 介绍了国内外关于碳与二氧化硫反应机理及反应动力学的研究, 讨论了C/SO₂摩尔比、反应温度、反应时间、反应气氛、碳的类型以及矿物质等因素对碳热还原二氧化硫反应的影响规律。得出了反应实现较高SO₂转化率和S产率所需要的条件。并指出微波辐照条件下, 碳还原二氧化硫的反应优势明显, 研究其反应机理和产物生成规律对于该技术的应用意义重大, 是未来发展的重要方向。

关键词: 二氧化硫, 还原, 硫黄, 微波辐照, 反应动力学, 活性炭

CLC Number:

X511

FENG Tai, ZHAO Xiqiang, ZHANG Liqiang, WANG Tao, MA Chunyuan. Progress of carbothermal reduction of SO₂ to elemental sulfur[J]. Chemical Industry and Engineering Progree, 2015, 34(07): 1898-1904.

冯太, 赵希强, 张立强, 王涛, 马春元. 碳热还原二氧化硫制备硫黄的研究进展[J]. 化工进展, 2015, 34(07): 1898-1904.

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Progress of carbothermal reduction of SO₂ to elemental sulfur

碳热还原二氧化硫制备硫黄的研究进展

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