铁强化二氧化锰去除连二硫酸锰及工艺研究

doi:10.12068/j.issn.1005-3026.2022.10.018

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (10): 1499-1505.DOI: 10.12068/j.issn.1005-3026.2022.10.018

铁强化二氧化锰去除连二硫酸锰及工艺研究

张绍宇¹，蒲鹏燕¹，蒋文举^1,2，杨林^1,2

(1. 四川大学建筑与环境学院，四川成都610065； 2. 国家烟气脱硫工程技术研究中心，四川成都610065)

修回日期:2021-07-29 接受日期:2021-07-29 发布日期:2022-11-07
通讯作者: 张绍宇
作者简介:张绍宇(1997-)，女，甘肃白银人，四川大学硕士研究生；蒋文举(1964-)，男，四川成都人，四川大学教授，博士生导师.
基金资助:
国家重点研发计划项目(2018YFC0213405).

Iron Enhanced Elimination of Manganese Dithionate by MnO₂ and Its Operating Conditions

ZHANG Shao-yu¹， PU Peng-yan¹， JIANG Wen-ju^1,2， YANG Lin^1,2

1. College of Architecture & Environment， Sichuan University， Chengdu 610065， China; 2. National Engineering Research Center for Flue Gas Desulfurization， Chengdu 610065， China.

Revised:2021-07-29 Accepted:2021-07-29 Published:2022-11-07
Contact: YANG Lin
About author:-
Supported by:
-

摘要/Abstract

摘要： 锰矿浆烟气脱硫过程中会产生副产物连二硫酸锰(MnS₂O₆)，它的存在制约了脱硫液中锰的资源化利用.基于锰矿组成提出铁强化MnO₂去除MnS₂O₆新工艺，探究了不同铁化学环境对MnO₂去除S₂O^2-₆影响.结果表明，加入Fe(III)对于二氧化锰去除S₂O^2-₆具有良好促进作用，去除率呈递增趋势，在5g·L^-1质量浓度的硫酸下去除率可达55.1%.操作条件优化实验结果表明，反应温度90℃，H₂SO₄质量浓度5g·L^-1，Fe(III)质量浓度15g·L^-1，n(S₂O^2-₆)∶n(MnO₂)=1∶20，反应时间3h的工况条件组合下S₂O^2-₆的效果较佳.

关键词: 烟道气；氧化锰矿；脱硫；Fe(III)；连二硫酸锰(MnS₂O₆)

Abstract: Manganese ore slurry flue gas desulfurization will produce the by-product manganese dithionate(MnS₂O₆)， and the presence of dithionate greatly affects the resource utilization of manganese in the desulfurization solution. A new process for iron-enhanced MnS₂O₆ elimination by MnO₂ is proposed based on the composition of most manganese ore. The results show that the addition of Fe(III)has a good promotion effect on the elimination of dithionite by MnO₂. The degradation efficiency gradually increases with the increase of Fe(III)， and the best degradation efficiency can reach 55.1% at 5g·L^-1 of H₂SO₄. The optimum operation conditions obtained are 90℃ reaction temperature， 5g·L^-1 of H₂SO₄， 15g·L^-1 of Fe(III)addition， n(S₂O^2-₆)∶ n(MnO₂)=1∶20 and 3h duration time.

Key words: flue gas; manganese oxide ore; desulfurization; Fe(III); manganese dithionate(MnS₂O₆)

中图分类号:

X701.3

张绍宇，蒲鹏燕，蒋文举，杨林. 铁强化二氧化锰去除连二硫酸锰及工艺研究[J]. 东北大学学报（自然科学版）, 2022, 43(10): 1499-1505.

ZHANG Shao-yu， PU Peng-yan， JIANG Wen-ju， YANG Lin. Iron Enhanced Elimination of Manganese Dithionate by MnO₂ and Its Operating Conditions[J]. Journal of Northeastern University(Natural Science), 2022, 43(10): 1499-1505.

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铁强化二氧化锰去除连二硫酸锰及工艺研究

Iron Enhanced Elimination of Manganese Dithionate by MnO₂ and Its Operating Conditions

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