铁基脱硫渣的再生循环

doi:10.12034/j.issn.1009-606X.217157

过程工程学报 ›› 2017, Vol. 17 ›› Issue (6): 1227-1232.DOI: 10.12034/j.issn.1009-606X.217157

铁基脱硫渣的再生循环

胡鹏举，彭志宏^*，周秋生，齐天贵，刘桂华，李小斌

中南大学冶金与环境学院，难冶有色金属资源高效利用国家工程实验室，湖南长沙 410083

收稿日期:2017-03-06 修回日期:2017-04-27 出版日期:2017-12-20 发布日期:2017-12-05
通讯作者: 彭志宏 pengzh@csu.edu.cn
基金资助:
国家自然科学基金青年项目

Regeneration and Cyclic Utilization of Iron-based Desulfurization Residue

Pengju HU, Zhihong PENG^*, Qiusheng ZHOU, Tiangui QI, Guihua LIU, Xiaobin LI

National Engineering Laboratory for Efficient Utilization of Refractory Non-ferrous Metals Resources, School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China

Received:2017-03-06 Revised:2017-04-27 Online:2017-12-20 Published:2017-12-05
Contact: PENG Zhi-hong Zhi-hongZhi-hong pengzh@csu.edu.cn

摘要/Abstract

摘要： 采用氧化方式对铁基脱硫渣进行再生和循环脱硫. 结果表明，在NaOH浓度50 g/L、温度50℃的条件下，用1倍理论量的双氧水氧化脱硫渣，脱硫渣中硫的去除率和再生后的循环除硫率分别为97.70%和40.90%；在NaOH浓度50 g/L、温度70℃、通气速率1.2 L/min和通气时间110 min的条件下，用氧气氧化脱硫渣，硫去除率和循环除硫率分别为83.71%和52.74%. 脱硫渣在碱性体系中被氧化，其中的硫主要以S2O32?形式进入液相，固相中的铁转变为FeOOH.

关键词: 铁基脱硫渣, 氧化, 再生, 循环脱硫, 碱性体系

Abstract: The regeneration and cyclic desulfurizing of iron-based desulfurization residue by oxidation was studied. The results indicated that sulfur removal rate of the residue and cyclic desulfurization rate of the regenerative desulfurizer were 97.70% and 40.90% respectively, after the desulfurization residue was oxidized at 50℃ with 1 times theoretical dosage of hydrogen peroxide and 50 g/L NaOH. While, the sulfur removal rate and the cyclic desulfurization rate were correspondingly 83.71% and 52.74%, by aerating oxygen at 1.2 L/min and oxidizing the residue at 70℃ for 110 min with 50 g/L NaOH. When the residue was oxidized in alkaline system, sulfur species of the residue mainly converted to S2O32? in liquid phase and the iron species could transform into FeOOH in solid phase.

Key words: iron-based desulfurization, oxidation, regeneration, cyclic desulfurizing, alkaline system

胡鹏举彭志宏周秋生齐天贵刘桂华李小斌. 铁基脱硫渣的再生循环[J]. 过程工程学报, 2017, 17(6): 1227-1232.

Pengju HU Zhihong PENG Qiusheng ZHOU Tiangui QI Guihua LIU Xiaobin LI. Regeneration and Cyclic Utilization of Iron-based Desulfurization Residue[J]. Chin. J. Process Eng., 2017, 17(6): 1227-1232.

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铁基脱硫渣的再生循环

Regeneration and Cyclic Utilization of Iron-based Desulfurization Residue

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