鼓泡塔中钢渣湿法烧结烟气脱硫过程及机理
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摘要
在自制有机玻璃鼓泡脱硫反应器中(直径为80mm,高为300mm),考察了钢渣湿式烧结烟气脱硫过程中钢渣粒径、钢渣吸收浆液浓度、进口二氧化硫浓度、浆液p H值及烟气流量等因素对脱硫率的影响以及钢渣烧结烟气脱硫机理.结果表明,当温度为常温,钢渣粒径小于75μm(200目),浆液浓度大于4%,进口二氧化硫浓度低于2 000mg/m3,烟气流量小于0.06m3/h,初始p H值大于7时,SO2去除率可达到80%以上,能够实现"以废治废".通过对钢渣脱硫前后的XRD,XRF分析,探索了钢渣湿法烧结烟气脱硫机理.
The mechanism and process of sintering flue gas desulfurization by steel slag were investigated in bubbling tower made up organic glass with a diameter of 80 mm and a height of300 mm,which is a kind of simplified good gas-liquid mass transfer equipment. The effects of various operating parameters,i. e.,steel slag particle size,slurry concentration,import sulfur dioxide concentration,p H value and flue gas flow were systematically investigated in the experiments. The most optimal experimental conditions for sintering flue gas desulfurization was found that when the temperature is normal temperature,steel slag particle size is greater than200 mesh size,slurry concentration is greater than 4%,imports SO_2 concentration is less than2 000 mg/m3,flue gas flow is less than 0. 06m3/h,initial p H value is more than 7,the SO_2 removal efficiency could achieve 80% above. The mechanism of sintering flue gas desulfurization by steel slag was explored by comparative analysis of XRD and XRF date of steel slag before and after desulfurization. Steel slag as desulfurization agent and treating wastes with wastes can be achieved,the industrial waste can be changed in to resource and the costs can be reduced.
The mechanism and process of sintering flue gas desulfurization by steel slag were investigated in bubbling tower made up organic glass with a diameter of 80 mm and a height of300 mm,which is a kind of simplified good gas-liquid mass transfer equipment. The effects of various operating parameters,i. e.,steel slag particle size,slurry concentration,import sulfur dioxide concentration,p H value and flue gas flow were systematically investigated in the experiments. The most optimal experimental conditions for sintering flue gas desulfurization was found that when the temperature is normal temperature,steel slag particle size is greater than200 mesh size,slurry concentration is greater than 4%,imports SO_2 concentration is less than2 000 mg/m3,flue gas flow is less than 0. 06m3/h,initial p H value is more than 7,the SO_2 removal efficiency could achieve 80% above. The mechanism of sintering flue gas desulfurization by steel slag was explored by comparative analysis of XRD and XRF date of steel slag before and after desulfurization. Steel slag as desulfurization agent and treating wastes with wastes can be achieved,the industrial waste can be changed in to resource and the costs can be reduced.
引文
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[9]冯聚和,王旭生,柯少华.转炉钢渣脱硫在烧结烟气中的基础研究[J].河北理工大学学报(自然科学版),2010,32(1):6-9Feng Juhe,Wang Xusheng,Ke Shaohua.The basic study on desulfurization of aglomeration gas by using converter steel sediment[J].Journal of Hebei Polytec-hnic University(Natural Science Edition),2010,32(1):6-9
[10]吴忠标,潘学良,钟丽,等.钢渣湿法脱硫试验研究[J].环境工程,1996,14(6):17-22Wu Zhongbiao,Pan Xueliang,Zhong Li,et al.Experimental study on wet flue gas desulfurization with steel work dust as absorbent[J].Environmental Engineering,1996,14(6):17-22
[11]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):1323-1328Liu Shengyu,Qiu Wei,Wang Xueting,et al.Mechanism and process of steel slag agglomeration gas desulfurization enhanced by citric acid[J].Chinese Journal of Environmental Engineering,2015,9(3):1323-1328
[12]Liu Xiaolong,Ye Meng,Wang Xue,et al.Gas-phase and particle-phase PCDD/F congener distributions in the flue gas from an iron ore sintering plant[J].Journal of Environmental Sciences,2016,56(4):118-125
[13]刘盛余,能子礼超,邱伟,等.喷淋塔中电石渣烟气脱硫工艺过程的研究[J].煤炭学报,2011,36(6):1011-1015Liu Shengyu,Nengzi Lichao,Qiu Wei,et al.Flue gas desulfurization process by Carbide slag in spray tower[J].Journal of China Coal Society,2011,36(6):1011-1015
[14]Chen Shuhao,Wang Xihua,He Xiaofei,et al.Industrial application of desulfurization using low basicity refining slag in tire cord steel[J].Journal of Iron and Steel Research,International,2013,20(1):26-33
[15]能子礼超,刘盛余.电石渣湿式烟气脱硫传质-反应过程研究[J].煤炭学报,2012,37(10):432-437Nengzi Lichao,Liu Shengyu.Mass transfer-reaction process of flue gas desulfurization by carbide slug[J].Journal of China Coal Society,2012,37(10):432-437
[16]钟毅,高翔,骆仲泱,等.湿法烟气脱硫系统脱硫效率的影响因素[J].浙江大学学报(工学版),2008,42(5):890-894Zhong Yi,Gao Xiang,Luo Zhongyang,et al.Factors influencing desulfurization efficiency of wet flue gas desulfurization system[J].Journal of Zhejiang University(Engineering Science),2008,42(5):890-894
[17]刘盛余,能子礼超,邱伟.喷淋塔中添加柠檬酸促进电石渣烟气脱硫及其机理[J].煤炭学报,2011,36(9):1549-1553Liu Shengyu,Nengzi Lichao,Qiu Wei.Mechanism and process of carbide slag flue gas desulfurization by adding citric acid in spray tower[J].Journal of China Coal Society,2011,36(9):1549-1553
[18]邱伟,刘盛余,能子礼超,等.氢氧化钠-钢渣双碱法烧结烟气脱硫工艺[J].环境工程学报,2013,7(3):1095-1100Qiu Wei,Liu Shengyu,Nengzi Lichao,et al.Study of Na OH-steel slag double alkali sintering flue gas desulphurization process[J].Chinese Journal of Environmental Engineering,2013,7(3):1095-1100
[19]刘建忠,吴晓蓉,程军.工业废弃物在煤燃烧过程中脱硫行为的研究[J].环境科学学报,2000,20(6):790-793Liu Jianzhong,Wu Xiaorong,Cheng Jun.The desulfurization characteristics of industrial wastes during coal combustion[J].Acta Scientiae Circumstantiae,2000,20(6):790-793
[20]Wang Gan,Wen Zhi,Lou Guofeng,et al.Mathematical modeling and combustion characteristic evaluation of a flue gas recirculation iron ore sintering process[J].International Journal of Heat and Mass Transfer,2016,97(1):964-974
[2]邢芳芳,姜琪,张亚志,等.钢铁工业烧结烟气多污染物协同控制技术分析[J].大气污染防治,环境工程,2014,32(4):75-78Xing Fangfang,Jiang Qi,Zhang Yazhi,et al.The analysis of multi-pollutant collaborative control technologies of sintering flue gas in iron and steel industry[J].Environmental Engineering,2014,32(4):75-78
[3]汤静芳,陈云.武钢一烧烟气脱硫工艺方案的选择研究[J].武钢技术,2015,53(1):7-10Tang Jingfang,Chen Yun.Choice research of flue gas desulfurization process in No.1 sintering plant of WISCO[J].WISCO Technology,2015,53(1):7-10
[4]鲁健.烧结烟气特点及处理技术的趋势[J].内蒙古科技大学学报,2012,31(3):227-230Lu Jian.The characteristics and the developing trend of disposing technology of sintering gas[J].Journal of Inner Mongolia University of Science and Technology,2012,31(3):227-230
[5]孙小跃,梁宝瑞,童震松.烧结烟气脱硫剂性能的研究[J].环境工程学报,2010,4(10):2293-2295Sun Xiaoyue,Liang Baorui,Tong Zhensong.Study on the performance of desulfurization agent for sintering flue gas[J].Chinese Journal of Environmental Enineering,2010,4(10):2293-2295.
[6]Yi Huang,Xu Guoping,Cheng Huigao,et al.An overview of utilization of steel slag[J].Procedia Environmental Sciences,2012,16(5):791-801
[7]于同川,于才渊,胡冠男.基于湿法脱硫技术的钢渣脱硫剂性能研究[J].化学工程,2009,37(8):55-58Yu Tongchuan,Yu Caiyuan,Hu Guannan.Performance study of steel slag as absorbent based on wet flue gas desulphurization[J].Chemical Engineering,2009,37(8):55-58
[8]Chen Xuling,Huang Yunsong,Gan Min,et al.Effect of H2O(g)content in circulating flue gas on iron ore sintering with flue gas recirculation[J].Journal of Iron and Steel Research,International,2015,22(12):1107-1112
[9]冯聚和,王旭生,柯少华.转炉钢渣脱硫在烧结烟气中的基础研究[J].河北理工大学学报(自然科学版),2010,32(1):6-9Feng Juhe,Wang Xusheng,Ke Shaohua.The basic study on desulfurization of aglomeration gas by using converter steel sediment[J].Journal of Hebei Polytec-hnic University(Natural Science Edition),2010,32(1):6-9
[10]吴忠标,潘学良,钟丽,等.钢渣湿法脱硫试验研究[J].环境工程,1996,14(6):17-22Wu Zhongbiao,Pan Xueliang,Zhong Li,et al.Experimental study on wet flue gas desulfurization with steel work dust as absorbent[J].Environmental Engineering,1996,14(6):17-22
[11]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):1323-1328Liu Shengyu,Qiu Wei,Wang Xueting,et al.Mechanism and process of steel slag agglomeration gas desulfurization enhanced by citric acid[J].Chinese Journal of Environmental Engineering,2015,9(3):1323-1328
[12]Liu Xiaolong,Ye Meng,Wang Xue,et al.Gas-phase and particle-phase PCDD/F congener distributions in the flue gas from an iron ore sintering plant[J].Journal of Environmental Sciences,2016,56(4):118-125
[13]刘盛余,能子礼超,邱伟,等.喷淋塔中电石渣烟气脱硫工艺过程的研究[J].煤炭学报,2011,36(6):1011-1015Liu Shengyu,Nengzi Lichao,Qiu Wei,et al.Flue gas desulfurization process by Carbide slag in spray tower[J].Journal of China Coal Society,2011,36(6):1011-1015
[14]Chen Shuhao,Wang Xihua,He Xiaofei,et al.Industrial application of desulfurization using low basicity refining slag in tire cord steel[J].Journal of Iron and Steel Research,International,2013,20(1):26-33
[15]能子礼超,刘盛余.电石渣湿式烟气脱硫传质-反应过程研究[J].煤炭学报,2012,37(10):432-437Nengzi Lichao,Liu Shengyu.Mass transfer-reaction process of flue gas desulfurization by carbide slug[J].Journal of China Coal Society,2012,37(10):432-437
[16]钟毅,高翔,骆仲泱,等.湿法烟气脱硫系统脱硫效率的影响因素[J].浙江大学学报(工学版),2008,42(5):890-894Zhong Yi,Gao Xiang,Luo Zhongyang,et al.Factors influencing desulfurization efficiency of wet flue gas desulfurization system[J].Journal of Zhejiang University(Engineering Science),2008,42(5):890-894
[17]刘盛余,能子礼超,邱伟.喷淋塔中添加柠檬酸促进电石渣烟气脱硫及其机理[J].煤炭学报,2011,36(9):1549-1553Liu Shengyu,Nengzi Lichao,Qiu Wei.Mechanism and process of carbide slag flue gas desulfurization by adding citric acid in spray tower[J].Journal of China Coal Society,2011,36(9):1549-1553
[18]邱伟,刘盛余,能子礼超,等.氢氧化钠-钢渣双碱法烧结烟气脱硫工艺[J].环境工程学报,2013,7(3):1095-1100Qiu Wei,Liu Shengyu,Nengzi Lichao,et al.Study of Na OH-steel slag double alkali sintering flue gas desulphurization process[J].Chinese Journal of Environmental Engineering,2013,7(3):1095-1100
[19]刘建忠,吴晓蓉,程军.工业废弃物在煤燃烧过程中脱硫行为的研究[J].环境科学学报,2000,20(6):790-793Liu Jianzhong,Wu Xiaorong,Cheng Jun.The desulfurization characteristics of industrial wastes during coal combustion[J].Acta Scientiae Circumstantiae,2000,20(6):790-793
[20]Wang Gan,Wen Zhi,Lou Guofeng,et al.Mathematical modeling and combustion characteristic evaluation of a flue gas recirculation iron ore sintering process[J].International Journal of Heat and Mass Transfer,2016,97(1):964-974