无机、有机添加剂对磷矿浆脱硫强化的影响
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摘要
为了对磷矿浆湿法脱硫技术进行强化,研究了添加剂种类、添加剂的比例、SO2进口浓度对磷矿浆脱硫的影响。结果表明:在矿浆固液比为5%、反应温度为25℃、气体流量为0.3 L·min-1、添加剂比例为2%、O2含量为5%的实验条件下,处理SO2浓度为3 000 mg·m-3,反应120 min时,可得出最佳硝酸盐添加剂为硝酸铁、最佳金属氧化物添加剂为二氧化锰,最佳有机添加剂为己二酸,硝酸铁、二氧化锰、己二酸的最佳添加比例分别为4%、6%、2%。在以上3种添加剂的最佳添加比例条件下,选取不同浓度的SO2进行实验,反应120 min时,二氧化锰对磷矿浆的强化脱硫效果最好,硝酸铁对磷矿浆的强化脱硫效果次之,而己二酸对磷矿浆的强化脱硫效果最差,它的波动较大。
In order to strengthen the wet desulfurization technology of phosphate ore slurry, the effects of additive type, additive ratio and SO2 inlet concentration on the desulfurization of phosphate ore slurry were studied. The experimental results showed that the concentration of treated SO2 was 3 000 mg·m-3 under the experimental conditions of solid-liquid ratio was 5%, the best addition rates of ferric nitrate, reamanganese dioxide and adipic acid were 4%, 6% and 2%, respectively. Under the optimal addition ratios of the reaction temperature was 25 ℃,gas flow rate was 0.3 L·min-1, additive ratio was 2% and O2 content was 5%, when the reaction time was 120 min, it can be concluded that the best nitrate additive is ferric nitrate, the best metal oxide additive is manganese dioxide,and the best organic additive is adipic acid. Under the optimal addition rates of the above three additives, different concentrations of SO2 were selected for the experiment, the effect of manganese dioxide on the desulfurization of phosphate ore slurry was best when the reaction time was 120 min, followed by the effect of ferric nitrate, the effect of adipic acid on the desulfurization of phosphate ore slurry was worst, and its fluctuation is greater.
In order to strengthen the wet desulfurization technology of phosphate ore slurry, the effects of additive type, additive ratio and SO2 inlet concentration on the desulfurization of phosphate ore slurry were studied. The experimental results showed that the concentration of treated SO2 was 3 000 mg·m-3 under the experimental conditions of solid-liquid ratio was 5%, the best addition rates of ferric nitrate, reamanganese dioxide and adipic acid were 4%, 6% and 2%, respectively. Under the optimal addition ratios of the reaction temperature was 25 ℃,gas flow rate was 0.3 L·min-1, additive ratio was 2% and O2 content was 5%, when the reaction time was 120 min, it can be concluded that the best nitrate additive is ferric nitrate, the best metal oxide additive is manganese dioxide,and the best organic additive is adipic acid. Under the optimal addition rates of the above three additives, different concentrations of SO2 were selected for the experiment, the effect of manganese dioxide on the desulfurization of phosphate ore slurry was best when the reaction time was 120 min, followed by the effect of ferric nitrate, the effect of adipic acid on the desulfurization of phosphate ore slurry was worst, and its fluctuation is greater.
引文
[1]张卫峰.石灰石湿法烟气脱硫中添加剂的研究[D].保定:华北电力大学,2013.
[2]DIRK E,LUEKAS M.A heat and mass transfer model for simulation of the wet limestone flue gas crubbing process[J].Chemical Engineering Technology,1998,21(1):56-60.DOI:10.1002/(SICI)1521-4125(199801)21:1<56::AID-CEAT56>3.0.CO;2-9.
[3]燕中凯,刘媛,岳涛,等.我国烟气脱硫工艺选择及技术发展展望[J].环境工程,2013,31(6):58-61.
[4]展锦程,张琳,龚坤,等.石灰石-石膏脱硫系统增效节能添加剂开发及应用[J].电力科技与环保,2016,32(1):42-44.
[5]王惠挺,张涌新,高翔,等.添加剂强化钙基湿法烟气脱硫的试验研究[J].浙江大学学报(工学版),2014,48(1):50-55.
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[7]NIMMO W,PATSIAS A A,HALL W J,et a1.Characterization of a process for the in-furnace reduction of NO?,SO2,and HCl by carboxylic salts of calcium[J].Industrial&Engineering Chemistry Research,2005,44(12):4484-4494.DOI:10.1021/ie0501780.
[8]孙文寿,吴忠标,谭天恩.烟气脱硫过程中添加剂对石灰石的促溶作用[J].中国环境科学,2002,22(4):305-308.
[9]胡金榜,胡玲玲,段振亚,等.湿法烟气脱硫添加剂研究进展[J].化学工业与工程,2005,22(6):456-460.
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[11]韩玉霞,王乃光,李鑫,等.有机酸添加剂强化石灰石湿法烟气脱硫过程的实验研究[J].动力工程,2007,27(2):278-281.
[12]薛娟琴,汪孔奋,杨娟娟,等.柠檬酸盐法烟气脱硫机理[J].化工进展,2008,59(4):1022-1027.
[13]张三虎,牛亚尊,包俊江,等.己二酸和己二酸钠强化石灰石WFGD的对比研究[J].环境工程学报,2009,3(11):2043-2046.
[14]武春锦,吕武华,梅毅.湿法烟气脱硫技术及运行经济性分析[J].化工进展,2015,34(12):4368-4374.
[15]刘卉卉.低浓度SO2磷矿浆液相催化氧化净化研究[D].昆明:昆明理工大学,2005.
[16]贾丽娟,张冬冬,殷在飞,等.磷矿浆脱硫新技术及工业应用[J].磷肥与复肥,2016,31(3):39-41.
[17]魏爱斌.硫酸尾气磷矿浆脱硫中试研究[D].昆明:昆明理工大学,2016.
[18]龚景松,傅维镳,何裕昆,等.氧化铁浆液脱硫的实验研究与理论分析[J].工程热物理学报,2002,23(4):520-522.
[19]张朝晖.金属离子液相催化氧化烟气脱硫的研究[D].保定:华北电力大学,2001.
[20]谭中坚,黄亚君,肖旭东.用Mn O2脱除电厂烟气中SO2制取工业硫酸锰的研究[J].中国锰业,2015,33(2):20-21.
[21]林德生.氧化锌法烟气脱硫技术的工业化应用[J].硫酸工业,2011(2):43-47.
[22]高稗甲.硫过渡金属离子液相催化氧化脱硫实验研究[D].沈阳:东北大学,2007.
[23]吕太,郭思鹏,齐笑言.600 MW燃煤机组湿法脱硫系统节能运行的优化研究[J].热能动力工程,2017,32(3):99-103.
[24]刘盛余,邱伟,汪雪婷,等.柠檬酸强化钢渣湿法烧结烟气脱硫及机理[J].环境工程学报,2015,9(3):1323-1328.
[25]蔡伟建,李济吾.含表面活性剂的Mn2+溶液脱除烟气中SO2初探[J].环境与开发,1999,14(2):26-27.
[26]杨伟华,郑明超.锰离子、铁离子液相催化氧化吸收SO2的研究[J].能源环境保护,2002,16(5):23-25.
[27]沈迪新,何占元,王玉荣,等.液相催化氧化吸收烟气中SO2的研究[J].环境化学,1993,13(2):99-104.
[28]吴忠标,余世清,莫建松,等.己二酸强化石灰石浆液脱硫工艺过程研究[J].高校化学工程学报,2003,17(5):540-544.
[29]韩颖慧,赵毅,曹春梅,等.高分子过氧酸改性钙基添加剂烟气同时脱硫脱硝实验研究[J].中国电机工程学报,2012,35(32):31-36.
[2]DIRK E,LUEKAS M.A heat and mass transfer model for simulation of the wet limestone flue gas crubbing process[J].Chemical Engineering Technology,1998,21(1):56-60.DOI:10.1002/(SICI)1521-4125(199801)21:1<56::AID-CEAT56>3.0.CO;2-9.
[3]燕中凯,刘媛,岳涛,等.我国烟气脱硫工艺选择及技术发展展望[J].环境工程,2013,31(6):58-61.
[4]展锦程,张琳,龚坤,等.石灰石-石膏脱硫系统增效节能添加剂开发及应用[J].电力科技与环保,2016,32(1):42-44.
[5]王惠挺,张涌新,高翔,等.添加剂强化钙基湿法烟气脱硫的试验研究[J].浙江大学学报(工学版),2014,48(1):50-55.
[6]WARYCH J,SZYMANOWAKI M.Model of the wet limestone flue gas desulfurization process for cost optimization[J].Industrial&Engineering Chemistry Research,2001,40(12):2597-2605.DOI:10.1021/ie0005708.
[7]NIMMO W,PATSIAS A A,HALL W J,et a1.Characterization of a process for the in-furnace reduction of NO?,SO2,and HCl by carboxylic salts of calcium[J].Industrial&Engineering Chemistry Research,2005,44(12):4484-4494.DOI:10.1021/ie0501780.
[8]孙文寿,吴忠标,谭天恩.烟气脱硫过程中添加剂对石灰石的促溶作用[J].中国环境科学,2002,22(4):305-308.
[9]胡金榜,胡玲玲,段振亚,等.湿法烟气脱硫添加剂研究进展[J].化学工业与工程,2005,22(6):456-460.
[10]OCHOA G R,D′IAZ-SOMOANO M,L′OPEZ A,et a1.Effect of adding aluminum salts to FGD systems upon the stabilization of mercury[J].Fuel,2012,96:568-571.DOI:/10.1016/j.fuel.2012.01.054.
[11]韩玉霞,王乃光,李鑫,等.有机酸添加剂强化石灰石湿法烟气脱硫过程的实验研究[J].动力工程,2007,27(2):278-281.
[12]薛娟琴,汪孔奋,杨娟娟,等.柠檬酸盐法烟气脱硫机理[J].化工进展,2008,59(4):1022-1027.
[13]张三虎,牛亚尊,包俊江,等.己二酸和己二酸钠强化石灰石WFGD的对比研究[J].环境工程学报,2009,3(11):2043-2046.
[14]武春锦,吕武华,梅毅.湿法烟气脱硫技术及运行经济性分析[J].化工进展,2015,34(12):4368-4374.
[15]刘卉卉.低浓度SO2磷矿浆液相催化氧化净化研究[D].昆明:昆明理工大学,2005.
[16]贾丽娟,张冬冬,殷在飞,等.磷矿浆脱硫新技术及工业应用[J].磷肥与复肥,2016,31(3):39-41.
[17]魏爱斌.硫酸尾气磷矿浆脱硫中试研究[D].昆明:昆明理工大学,2016.
[18]龚景松,傅维镳,何裕昆,等.氧化铁浆液脱硫的实验研究与理论分析[J].工程热物理学报,2002,23(4):520-522.
[19]张朝晖.金属离子液相催化氧化烟气脱硫的研究[D].保定:华北电力大学,2001.
[20]谭中坚,黄亚君,肖旭东.用Mn O2脱除电厂烟气中SO2制取工业硫酸锰的研究[J].中国锰业,2015,33(2):20-21.
[21]林德生.氧化锌法烟气脱硫技术的工业化应用[J].硫酸工业,2011(2):43-47.
[22]高稗甲.硫过渡金属离子液相催化氧化脱硫实验研究[D].沈阳:东北大学,2007.
[23]吕太,郭思鹏,齐笑言.600 MW燃煤机组湿法脱硫系统节能运行的优化研究[J].热能动力工程,2017,32(3):99-103.
[24]刘盛余,邱伟,汪雪婷,等.柠檬酸强化钢渣湿法烧结烟气脱硫及机理[J].环境工程学报,2015,9(3):1323-1328.
[25]蔡伟建,李济吾.含表面活性剂的Mn2+溶液脱除烟气中SO2初探[J].环境与开发,1999,14(2):26-27.
[26]杨伟华,郑明超.锰离子、铁离子液相催化氧化吸收SO2的研究[J].能源环境保护,2002,16(5):23-25.
[27]沈迪新,何占元,王玉荣,等.液相催化氧化吸收烟气中SO2的研究[J].环境化学,1993,13(2):99-104.
[28]吴忠标,余世清,莫建松,等.己二酸强化石灰石浆液脱硫工艺过程研究[J].高校化学工程学报,2003,17(5):540-544.
[29]韩颖慧,赵毅,曹春梅,等.高分子过氧酸改性钙基添加剂烟气同时脱硫脱硝实验研究[J].中国电机工程学报,2012,35(32):31-36.