文档库 最新最全的文档下载
当前位置:文档库 › 酸碱改性及负载镍对活性炭脱硫性能影响研究

酸碱改性及负载镍对活性炭脱硫性能影响研究

第37卷第11期 硅 酸 盐 通 报 Vol .37 No .11 2018年11月 BULLETIN OF THE CHINESE CERAMIC SOCIETY November ,2018

酸碱改性及负载镍对活性炭脱硫性能影响研究

黄帮福1,2,耿朝阳3,施 哲1,2,丁跃华1,2,张桂芳1,2,周晓雷1,2,刘兰鹏

1,2(1.昆明理工大学冶金工程系,昆明 650093;2.云南省高校复杂铁资源清洁冶金重点实验室,昆明 650093;

3.首钢京唐钢铁联合有限责任公司,唐山 063200)摘要:酸碱改性可增加活性炭表面官能团数量、增大比表面积和孔容、提高金属活性组分在其表面的分散度,负载镍可使活性炭具有较好的低温脱硫性能。为开发适合用于钢铁企业烧结烟气低温脱硫的活性炭,采用HNO 3和KOH 分别对椰壳活性炭进行改性并负载镍,分别开展HNO 3改性活性炭的反应温度和改性条件对脱硫性能影响,通过BET 对炭基和酸改性活性炭进行表征,KOH 改性活性炭的碱炭比、活化时间和活化温度对脱硫性能影响,炭基、酸改性和碱改性活性炭且负载镍的脱硫剂脱硫性能研究。研究表明:60℃为1Ni /NAC 最佳脱硫反应温度,HNO 3处理后再负载镍对催化剂脱硫性能提高较大;合理的碱炭比为3∶1,最佳活化时间为1h ,合适的活化温度为

800℃;负载镍活性炭脱硫能力由强到弱的顺序为1Ni /NAC >1Ni /KAC >1Ni /AC 。研究成果可为钢铁企业烧结烟气低温脱硫及多污染物协同治理提供借鉴。

关键词:酸碱改性;镍;活性炭;脱硫性能;影响因素

中图分类号:O 643 文献标识码:A 文章编号:1001-1625(2018)11-3617-06DesulfurizingPropertyofActivatedCarbonModifiedbyAcidandAlkaliandNickel

HUANGBang-fu1,2,GENGChao-yang3,SHIZhe1,2,DINGYue-hua1,2

ZHANGGui-fang1,2,ZHOUXiao-lei1,2,LIULan-peng1,2(1.Department of Metallurgical Engineering ,Kunming University of Science and Technology ,Kunming 650093,China ;

2.Clean Metallurgy Key Laboratory of Complex Iron Resources ,University of Yunnan Province ,Kunming 650093,China ;

3.Shougang Jintang United Iron&Steel Co .,Ltd .,Tangshan 063200,China )

基金项目:国家自然科学基金地区基金(51664036);云南省教育厅科学研究基金产业化培育项目(2016CYH 07);昆明理工大学分析测试

基金(2016T 20110010)

作者简介:黄帮福(1983-),男,博士,副教授.主要从事钢铁企业烟气治理研究.Abstract:Activated carbon (AC )modified by acid and alkali can increase the surface functional groups and specific surface and pore volume ,as well as raise the dispersion degree of the metal active component .Besides ,AC loaded by nickel has better low -temperature desulfurization performance .To develop AC of low -temperature desulfurization for iron -steel sintering flue gas ,coconut husk AC was used as the object of research ,and the coconut husk AC was modified and loaded with nickel by HNO 3and KOH .The desulfurization influence factors of reaction temperature and modifying conditions of acid -modification AC were analyzed .The surface properties of AC and acid -modification AC were studied via BET .The desulfurization influence factors of KOH /C ratio and soak time and soak temperature were researched ,and the desulfurizing properties of 1Ni /AC ,1Ni /NAC ,and 1Ni /KAC were also compared .Through experiments and analyzed ,the following conclusions were obtained .The optimum reaction temperature of 1Ni /NAC desulphurization is 60℃,and the desulfurizing property of 1Ni /NAC is higher than the desulfurizing property of AC .The reasonable ratio of compare alkali with carbon is 3∶1,and the optimum soak time is 1h .The suitable soak temperature equals 800℃,and the sequence of catalyst desulfurizing ability is 1Ni /NAC >1Ni /KAC >1Ni /AC .The research findings offer a reference for low -temperature desulfurization and the simultaneous control of multiple pollutants of iron -steel sintering flue gas .Keywords:acid -modification and alkali -modification ;nickel ;activated carbon ;desulfurizing property ;

万方数据

相关文档