(四川大學(xué) 建筑與環(huán)境學(xué)院 國家煙氣脫硫工程技術(shù)研究中心，成都 610065)
摘 要: 氧化錳礦脫硫是一種新型大氣污染控制協(xié)同硫資源化脫硫技術(shù)，但脫硫過程中除生成MnSO4外，還會(huì)生成副產(chǎn)物MnS2O6，影響脫硫漿液的資源化利用。本文以MnO2礦為原料，研究了脫硫錳漿中低濃度MnS2O6的強(qiáng)化分解過程，討論了MnS2O6濃度、反應(yīng)時(shí)間、反應(yīng)溫度、硫酸濃度和錳礦投加量等關(guān)鍵反應(yīng)條件對(duì)MnS2O6分解的影響。并對(duì)MnO2礦強(qiáng)化氧化分解MnS2O6進(jìn)行了動(dòng)力學(xué)分析。結(jié)果表明：MnO2礦強(qiáng)化氧化分解MnS2O6的表觀反應(yīng)級(jí)數(shù)為2，反應(yīng)活化能為74.8 kJ/mol，屬于化學(xué)反應(yīng)控制過程。
關(guān)鍵字: 錳礦脫硫；連二硫酸錳(MnS2O6)；MnO2礦；氧化分解；動(dòng)力學(xué)
（College of Architecture and Environment, National Engineering Research Center for Flue Gas Desulfurization, Sichuan University, Chengdu 610065, China）
Abstract:Manganese oxide desulfurization is a new desulfurization technology and coupled with the resource utilization of sulfur simultaneous. However, the desulfurization process has an inevitable byproduct, the manganese dithionate (MnS2O6), which affect the following resource utilization. In this study, the natural manganese oxide ore (δ-MnO2) strengthened low concentration MnS2O6 decomposition was carefully studied. The effects of operation conditions, including the original MnS2O6 concentration, reaction time, temperature, slurry acidity and manganese ore addition on decomposition of MnS2O6 were discussed, and the kinetics was also analyzed based on these results. The results show that the apparent reaction order of MnS2O6 with natural MnO2 ore is 2, and the activation energy is 74.8 kJ/mol, which is a typically chemical reaction control process.
Key words: manganese oxide ore desulfurization; manganese dithionate (MnS2O6); natural MnO2 ore; oxidation decomposition; kinetics
