烟气脱硫中间产物CaSO3无氧热分解的研究  

Anaerobic thermal decomposition of CaSO3 intermediate in flue gas desulfurization

作　　者：袁晓东 杨忠 董林[3] 齐誉[1] 乔秀文[1] 洪成林[1] 李洪玲[1] 王金玉 但建明[1] Yuan Xiaodong;Yang Zhong;Dong Lin;Qi Yu;Qiao Xiuwen;Hong Chenglin;Li Honglin;Wang Jinyu;Dan Jianming(School of Chemistry and Chemical Engineering,Shihezi University/Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan/Key Laboratory ofMaterials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region,Shihezi,Xinjiang 832003,China;Xinjiang Tianye Group,Shihezi,Xinjiang 832003,China;Jiangsu Key Laboratory of Vehicle Emissions Control,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing,Jiangsu 210000,China)

机构地区：[1]石河子大学化学化工学院/省部共建国家重点实验室培育基地/新疆兵团化工绿色过程重点实验室/材料化工新疆维吾尔自治区重点实验室,新疆石河子832003 [2]新疆天业集团,新疆石河子832003 [3]南京大学化学化工学院江苏省机动车尾气污染控制重点实验室,江苏南京210000

出　　处：《石河子大学学报（自然科学版）》2019年第1期73-78,共6页Journal of Shihezi University(Natural Science)

基　　金：南京大学“江苏省机动车尾气污染控制重点实验室”开放基金(OVEC021);石河子大学高层次人才科研启动项目(RCSX-2018B06)

摘　　要：为减少烟气脱硫产物的污染和实现钙硫资源的回收利用,同时简化现有的脱硫工艺,提出将烟气脱硫中间产物CaSO3进行无氧热分解为CaO和SO2的循环利用途径。本文研究以热分解产物CaO含量为主要考察指标,探究影响CaSO3热分解的条件。实验结果表明:在无氧高温条件下,CaSO3热分解为CaO和SO2,热分解的优化条件为:N2气氛、热分解温度1150℃、热分解时间2h、热分解升温速率6℃/min、N2流量80mL/min,热分解产物CaO含量为99.32%。烟气脱硫中间产物CaSO3的无氧热分解,具有明显的环保和经济价值,其应用前景广阔。To reduce the pollution of flue gas desulfurization products and realize the recycling of calcium and sulfur resources,while simplifying the existing desulfurization process,a recycling route for the desulfurization of the flue gas desulfurization intermediate CaSO3 to CaO and SO2 is proposed.Taking the CaO content of thermal decomposition products as the main investigation index,the conditions affecting the thermal decomposition of CaSO3 were investigated.The experimental results show that under the condition of no oxygen and high temperature,CaSO3 is thermally decomposed into CaO and SO2.The optimal conditions for thermal decomposition are:N2 atmosphere,decomposition temperature of 1150 ℃,holding time of 2 h,heating rate of 6 ℃/min,nitrogen flow rate of 80 mL/min,the thermal decomposition product CaO content was 99.32%.The anaerobic thermal decomposition of flue gas desulfurization intermediate CaSO3 enjoys a broad prospect of utilization thanks to its obvious values of environmental protection and economy.

关 键 词：CaSO3 烟气脱硫 无氧 热分解 优化条件 

分 类 号：TQ131.12[化学工程—无机化工] X781.3[环境科学与工程—环境工程]