褐煤与石莼共热解制备活性炭及其吸附性能
|
摘要
将褐煤与石莼的混合物进行低温共热解,再将三相产物中的半焦通过KOH活化制备高性能活性炭材料,并探究活化工艺对活性炭吸附性能的影响。结果表明:褐煤中掺混质量分数为30%的石莼,为共热解最佳掺混比,并可共热解得到半焦。最佳工艺条件为:碱炭质量比3.0∶1、活化时间60min、活化温度800℃,此条件下活性炭的碘吸附值和亚甲基蓝吸附值均达到最大值,分别为1 701.64mg/g和699.61mg/g,吸附性能最优。活性炭的BET比表面积高达1 519.318 3m~2/g,微孔比表面积为1 240.491 3m~2/g,微孔结构发达,微孔孔径主要集中在0.4nm～1.2nm。FTIR检测结果表明,活性炭的表面官能团减少,—OH含量较高。SEM分析结果表明,活性炭表面十分粗糙,存在大量孔结构。
Indonesia lignite was co-pyrolyzed with different mass fractions of Ningde ulva,and semi-coke of the pyrolysis products was activated by KOH to prepare the activated carbon.The effects of conditions of KOH activation on the adsorption properties of activated carbon were investigated.Semi-coke was prepared on the condition that the mass fraction of ulva is30%.The iodine adsorption value and methylene blue adsorption value of activated carbon is up to1 701.64 mg/g and 699.61 mg/g respectively when the semi-coke activated by KOH under the optimal conditions of mass ratio of KOH to semi-coke 3.0∶1,activation temperature 800 ℃,activation time 60 min.BET surface area and micropore surface area is up to 1 519.318 3 m~2/g and 1 240.491 3 m~2/g respectively.Activated carbon's microporous structure is rich,and its majority of micropore diameter is 0.4 nm-1.2 nm.The FTIR results show that the surface functional group of activated carbon decreases,and the content of—OH is high.The SEM results show that the surface of activated carbon is very rough and has plenty of pore structures.
Indonesia lignite was co-pyrolyzed with different mass fractions of Ningde ulva,and semi-coke of the pyrolysis products was activated by KOH to prepare the activated carbon.The effects of conditions of KOH activation on the adsorption properties of activated carbon were investigated.Semi-coke was prepared on the condition that the mass fraction of ulva is30%.The iodine adsorption value and methylene blue adsorption value of activated carbon is up to1 701.64 mg/g and 699.61 mg/g respectively when the semi-coke activated by KOH under the optimal conditions of mass ratio of KOH to semi-coke 3.0∶1,activation temperature 800 ℃,activation time 60 min.BET surface area and micropore surface area is up to 1 519.318 3 m~2/g and 1 240.491 3 m~2/g respectively.Activated carbon's microporous structure is rich,and its majority of micropore diameter is 0.4 nm-1.2 nm.The FTIR results show that the surface functional group of activated carbon decreases,and the content of—OH is high.The SEM results show that the surface of activated carbon is very rough and has plenty of pore structures.
引文
[1]肖磊.中低阶煤分质梯级利用的发展与创新[C].2015第四届国际清洁能源论坛,澳门:2015.XIAO Lei.The Development and Innovation of Medium and Low Rank Coal Grading Utilization[C].The Fourth International Conference on Clean Energy BBS,Macao:2015.
[2]汪寿建.现代煤气化技术发展趋势及应用综述[J].化工进展,2016,35(3):653-664.WANG Shoujian.Development and Application of Modern Coal Gasification Technology[J].Chemical Industry and Engineering Progress,2016,35(3):653-664.
[3]刘源,杨伏生,贺新福,等.影响煤炭热解产物分布的因素[J].湖南科技大学学报(自然科学版),2016,31(1):19-24.LIU Yuan,YANG Fusheng,HE Xinfu,et al.The Influence Factors of Products Distribution from Coal Pyrolysis[J].Journal of Hu’nan University of Science and Technology(Natural Science Edition),2016,31(1):19-24.
[4]林东杰,甘晓雁,彭书.低阶煤热解过程中的能量综合利用[J].煤炭科学技术,2016,44(增刊1):186-188.LIN Dongjie,GAN Xiaoyan,PENG Shu.Energy Comprehensive Utilization During Low Rank Coal Pyrolysis[J].Coal Science and Technology,2016,44(Supplement 1):186-188.
[5]高新源,徐庆,李占勇,等.生物质快速热解装置研究进展[J].化工进展,2016,35(10):3032-3041.GAO Xinyuan,XU Qing,LI Zhanyong,et al.Progress in the Study of Biomass Fast Pyrolysis Equipment[J].Chemical Industry and Engineering Progress,2016,35(10):3032-3041.
[6]金会心,朱明燕,吴复中,等.褐煤与生物质共热解过程的协同效应[J].煤炭转化,2016,39(3):34-38.JIN Huixin,ZHU Mingyan,WU Fuzhong,et al.Synergistic Effect of Co-pyrolysis Process of Lignite and Biomass[J].Coal Conversion,2016,39(3):34-38.
[7]CHO S H,LEE J,KIM K H,et al.Carbon Dioxide Assisted Co-pyrolysis of Coal and Ligno-cellulosic Biomass[J].Energy Conversion and Management,2016,118:243-252.
[8]ZHANG Junjie,QUAN Cui,QIU Yujie,et al.Effect of Char on Co-pyrolysis of Biomass and Coal in a Free Fall Reactor[J].Fuel Processing Technology,2015,135(9):73-79.
[9]方梦祥,李均,夏芝香,等.延长烟煤与玉米秸秆共热解实验研究[J].煤炭学报,2015,40(增刊1):208-215.FANG Mengxiang,LI Jun,XIA Zhixiang,et al.Experimental Study on the Co-pyrolysis Process of Yanchang Bituminous and Cornstalk[J].Journal of China Coal Society,2015,40(Supplement 1):208-215.
[10]刘家利,杨忠灿,王志超,等.兰炭作为动力用煤的燃烧性能研究[J].洁净煤技术,2016,22(2):84-88.LIU Jiali,YANG Zhongcan,WANG Zhichao,et al.Combustion Characteristics of Blue-coke as Fuel for Pulverized Coal Boiler[J].Clean Coal Technology,2016,22(2):84-88.
[11]蒋剑春,孙康.活性炭制备技术及应用研究综述[J].林产化学与工业,2017,37(1):1-13.JIANG Jianchun,SUN Kang.Review on Preparation Technology of Activated Carbon and Its Application[J].Chemistry and Industry of Forest Products,2017,37(1):1-13.
[12]孙龙梅,张丽平,薛建华,等.活性炭制备方法及应用的研究进展[J].化学与生物工程,2016,33(3):5-8.SUN Longmei,ZHANG Liping,XUE Jianhua,et al.Research Progress on Preparation Methods and Applications of Activated Carbon[J].Chemistry and Bioengineering,2016,33(3):5-8.
[13]LUO Heming,FENG Huixia,WANG Yi,et al.Preparation of Activated Carbon from Coke Powder and Its Application[J].Environmental Protection of Chemical Industry,2007,27(5):481-483.
[14]吴波,张进成,魏凤玉,等.改性兰炭末对对硝基苯酚的吸附平衡和动力学[J].化工进展,2016,35(增刊1):321-326.WU Bo,ZHANG Jincheng,WEI Fengyu,et al.Adsorption Equilibrium and Kinetics of p-nitrophenol on Modified Fine Bluecoke[J].Chemical Industry and Engineering Progress,2016,35(Supplement 1):321-326.
[15]SHI Xiaoyong,QI Mingyan,TANG Hongjie,et al.Spatial and Temporal Nutrient Variations in the Yellow Sea and Their Effects on Ulva prolifera Blooms[J].Estuarine,Coastal and Shelf Science,2015,163:36-43.
[16]张建,侯影飞,周洪洋,等.活性半焦用于油田含油污水除油的研究[J].环境工程学报,2010,4(2):355-359.ZHANG Jian,HOU Yingfei,ZHOU Hongyang,et al.Study on Oil Removal from Oilfield Wastewater Using Activated Semicoke[J].Chinese Journal of Environmental Engineering,2010,4(2):355-359.
[17]BEDIN K C,MARTINS A C,CAZETTA A L,et al.KOH-activated Carbon Prepared from Sucrose Spherical Carbon:Adsorption Equilibrium,Kinetic and Thermodynamic Studies for Methylene Blue Removal[J].Chemical Engineering Journal,2016,286:476-484.
[18]ACOSTA R,FIERRO V,MARTINEZ DE YUSO A,et al.Tetracycline Adsorption onto Activated Carbons Produced by KOH Activation of Tyre Pyrolysis Char[J].Chemosphere,2016,149:168-176.
[19]李海红,杨佩,薛慧,等.KOH活化法制备废旧棉织物活性炭及表征[J].精细化工,2018,35(1):174-180.LI Haihong,YANG Pei,XUE Hui,et al.Preparation and Characterization of Activated Carbon from Cotton Woven Waste with Potassium Hydroxide[J].Fine Chemicals,2018,35(1):174-180.
[20]简敏菲,高凯芳,余厚平.不同裂解温度对水稻秸秆制备生物炭及其特性的影响[J].环境科学学报,2016,36(5):1757-1765.JIAN Minfei,GAO Kaifang,YU Houping.Effects of Different Pyrolysis Temperatures on the Preparation and Characteristics of Bio-char from Rice Straw[J].Acta Scientiae Circumstantiae,2016,36(5):1757-1765.
[21]OUDGHIRI F,ALLALI N,QUIROGA J M,et al.TG-FTIR Analysis on Pyrolysis and Combustion of Marine Sediment[J].Infrared Physics and Technology,2016,78:268-274.
[2]汪寿建.现代煤气化技术发展趋势及应用综述[J].化工进展,2016,35(3):653-664.WANG Shoujian.Development and Application of Modern Coal Gasification Technology[J].Chemical Industry and Engineering Progress,2016,35(3):653-664.
[3]刘源,杨伏生,贺新福,等.影响煤炭热解产物分布的因素[J].湖南科技大学学报(自然科学版),2016,31(1):19-24.LIU Yuan,YANG Fusheng,HE Xinfu,et al.The Influence Factors of Products Distribution from Coal Pyrolysis[J].Journal of Hu’nan University of Science and Technology(Natural Science Edition),2016,31(1):19-24.
[4]林东杰,甘晓雁,彭书.低阶煤热解过程中的能量综合利用[J].煤炭科学技术,2016,44(增刊1):186-188.LIN Dongjie,GAN Xiaoyan,PENG Shu.Energy Comprehensive Utilization During Low Rank Coal Pyrolysis[J].Coal Science and Technology,2016,44(Supplement 1):186-188.
[5]高新源,徐庆,李占勇,等.生物质快速热解装置研究进展[J].化工进展,2016,35(10):3032-3041.GAO Xinyuan,XU Qing,LI Zhanyong,et al.Progress in the Study of Biomass Fast Pyrolysis Equipment[J].Chemical Industry and Engineering Progress,2016,35(10):3032-3041.
[6]金会心,朱明燕,吴复中,等.褐煤与生物质共热解过程的协同效应[J].煤炭转化,2016,39(3):34-38.JIN Huixin,ZHU Mingyan,WU Fuzhong,et al.Synergistic Effect of Co-pyrolysis Process of Lignite and Biomass[J].Coal Conversion,2016,39(3):34-38.
[7]CHO S H,LEE J,KIM K H,et al.Carbon Dioxide Assisted Co-pyrolysis of Coal and Ligno-cellulosic Biomass[J].Energy Conversion and Management,2016,118:243-252.
[8]ZHANG Junjie,QUAN Cui,QIU Yujie,et al.Effect of Char on Co-pyrolysis of Biomass and Coal in a Free Fall Reactor[J].Fuel Processing Technology,2015,135(9):73-79.
[9]方梦祥,李均,夏芝香,等.延长烟煤与玉米秸秆共热解实验研究[J].煤炭学报,2015,40(增刊1):208-215.FANG Mengxiang,LI Jun,XIA Zhixiang,et al.Experimental Study on the Co-pyrolysis Process of Yanchang Bituminous and Cornstalk[J].Journal of China Coal Society,2015,40(Supplement 1):208-215.
[10]刘家利,杨忠灿,王志超,等.兰炭作为动力用煤的燃烧性能研究[J].洁净煤技术,2016,22(2):84-88.LIU Jiali,YANG Zhongcan,WANG Zhichao,et al.Combustion Characteristics of Blue-coke as Fuel for Pulverized Coal Boiler[J].Clean Coal Technology,2016,22(2):84-88.
[11]蒋剑春,孙康.活性炭制备技术及应用研究综述[J].林产化学与工业,2017,37(1):1-13.JIANG Jianchun,SUN Kang.Review on Preparation Technology of Activated Carbon and Its Application[J].Chemistry and Industry of Forest Products,2017,37(1):1-13.
[12]孙龙梅,张丽平,薛建华,等.活性炭制备方法及应用的研究进展[J].化学与生物工程,2016,33(3):5-8.SUN Longmei,ZHANG Liping,XUE Jianhua,et al.Research Progress on Preparation Methods and Applications of Activated Carbon[J].Chemistry and Bioengineering,2016,33(3):5-8.
[13]LUO Heming,FENG Huixia,WANG Yi,et al.Preparation of Activated Carbon from Coke Powder and Its Application[J].Environmental Protection of Chemical Industry,2007,27(5):481-483.
[14]吴波,张进成,魏凤玉,等.改性兰炭末对对硝基苯酚的吸附平衡和动力学[J].化工进展,2016,35(增刊1):321-326.WU Bo,ZHANG Jincheng,WEI Fengyu,et al.Adsorption Equilibrium and Kinetics of p-nitrophenol on Modified Fine Bluecoke[J].Chemical Industry and Engineering Progress,2016,35(Supplement 1):321-326.
[15]SHI Xiaoyong,QI Mingyan,TANG Hongjie,et al.Spatial and Temporal Nutrient Variations in the Yellow Sea and Their Effects on Ulva prolifera Blooms[J].Estuarine,Coastal and Shelf Science,2015,163:36-43.
[16]张建,侯影飞,周洪洋,等.活性半焦用于油田含油污水除油的研究[J].环境工程学报,2010,4(2):355-359.ZHANG Jian,HOU Yingfei,ZHOU Hongyang,et al.Study on Oil Removal from Oilfield Wastewater Using Activated Semicoke[J].Chinese Journal of Environmental Engineering,2010,4(2):355-359.
[17]BEDIN K C,MARTINS A C,CAZETTA A L,et al.KOH-activated Carbon Prepared from Sucrose Spherical Carbon:Adsorption Equilibrium,Kinetic and Thermodynamic Studies for Methylene Blue Removal[J].Chemical Engineering Journal,2016,286:476-484.
[18]ACOSTA R,FIERRO V,MARTINEZ DE YUSO A,et al.Tetracycline Adsorption onto Activated Carbons Produced by KOH Activation of Tyre Pyrolysis Char[J].Chemosphere,2016,149:168-176.
[19]李海红,杨佩,薛慧,等.KOH活化法制备废旧棉织物活性炭及表征[J].精细化工,2018,35(1):174-180.LI Haihong,YANG Pei,XUE Hui,et al.Preparation and Characterization of Activated Carbon from Cotton Woven Waste with Potassium Hydroxide[J].Fine Chemicals,2018,35(1):174-180.
[20]简敏菲,高凯芳,余厚平.不同裂解温度对水稻秸秆制备生物炭及其特性的影响[J].环境科学学报,2016,36(5):1757-1765.JIAN Minfei,GAO Kaifang,YU Houping.Effects of Different Pyrolysis Temperatures on the Preparation and Characteristics of Bio-char from Rice Straw[J].Acta Scientiae Circumstantiae,2016,36(5):1757-1765.
[21]OUDGHIRI F,ALLALI N,QUIROGA J M,et al.TG-FTIR Analysis on Pyrolysis and Combustion of Marine Sediment[J].Infrared Physics and Technology,2016,78:268-274.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |