燃煤锅炉中氟元素迁移规律研究Research on the Transfer Rules of Fluorine in Coal-fired Boilers
刘文新,张海丹,王准,郎宁
LIU Wenxin,ZHANG Haidan,WANG Zhun,LANG Ning
摘要(Abstract)：
采用标准测量方法对某发电集团3台燃煤锅炉的入炉煤样、飞灰、底渣、脱硫浆液、石膏、净烟气中的氟元素含量进行测试,并根据氟元素迁移过程中的质量平衡关系,得到各环节中氟元素的富集比例和迁移规律,并得出结论:通过炉内燃烧和尾部烟气净化,燃煤机组的总脱氟效率可达到98.9%,大部分氟元素以固态形式富集在石膏产物中。
The fluorine concentration in coal, fly ash, coal cinder, slurry, gypsum and flue gas was measured at three different coal-fired boilers in a power generation group in China by use of the standard measurement method. According to the mass balance in the process of fluorine transfer, the enrichment proportion and transfer rules of fluorine were figured out. It was concluded that the defluorination efficiency can be up to 98.9% for coal-fired boilers, and most of the fluorine element solidly gathered into the gypsum products.
关键词(KeyWords)：
燃煤锅炉;氟;迁移;排放
coal-fired boilers;fluorine;transfer;emission
基金项目(Foundation):
作者(Author):
刘文新,张海丹,王准,郎宁
LIU Wenxin,ZHANG Haidan,WANG Zhun,LANG Ning
DOI: 10.19585/j.zjdl.201909009
参考文献(References)：
- [1]刘雪锋,郑楚光,刘晶,等.贵州煤中氟赋存形态分析[J].中国电机工程学报,2008,28(8):46-51.
- [2]吴代赦,郑宝山,唐修义,等.中国煤中氟的含量及其分布[J].环境科学,2005,26(1):7-11.
- [3]张尊干,李衍方,倪琳,等.徐州煤中氟的含量分布及赋存状态研究[J].中国煤炭,2018,44(8):156-160.
- [4]陈萍,唐修义.中国煤中的氟[J].中国煤田地质,2002,14(7):25-28.
- [5]华晓宇,滕敏华,吴剑波.燃煤氟排放危害及治理方向浅析[J].资源节约与环保,2014(9):140-141.
- [6]叶青,张国鑫,沈军,等.湿法脱硫吸收塔浆液PH值异常情况处理[J].电力环境保护,2008(5):40-42.
- [7]昆利,徐立荣,李日邦,等.中国华北地区和西北地区动力煤氟的排放量[J].科学通报,2002(11):873-877.
- [8]张静.陕西燃煤大气氟排放量的估算[J].煤炭加工与综合利用,2018(11):57-59.
- [9]CHRISTOPHER F B,ANDERS W A.Emissions of vaporphase fluorine and ammonia from columbia coal-firedpower plant[J].Environ.Sci.Technol,1985,19(5):1099-1103.
- [10]杨常青,康菲,白冰,等.部分进口煤炭中氟元素的含量特征及赋存形态[J].洁净煤技术,2017(1):100-105.
- [11]WANG X B,DAI S F,SUN Y Y,et al.Modes of occurrence of fluorine in the Late Paleozoic No.6 coal from the Haerwusu Surface mine,Inner Mongolia,China[J].Fuel,2011,90(1):248-254.
- [12]刘桂建,杨萍月.济宁煤田煤中微量元素的地球化学研究[J].地质地球化学,1999,24(4):77-89.
- [13]刘桂建,杨萍月,彭子成,等.兖州矿区煤中某些微量元素的赋存状态研究[J].地球化学,2002,31(1):85-89.
- [14]杨福迈.燃煤锅炉典型脱硫工艺的脱氟反应机理分析[J].科技创新与应用,2015(21):118.
- [15]柳逢春,徐李全.阎寒冰.超低排放机组脱硫浆液循环泵运行方式优化[J].山西电力,2017(6):50-52.
- [16]王炫,孟东栋,杨涛,等.制碱白泥应用于巡煤电厂湿法烟气脱硫过程的反应特性[J].广东电力,2018,31(5):21-27.