基于RCOO~(-+)N(CH_3)_3R'型两性树脂法的MDEA溶液离子净化研究
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摘要
以RCOO~(-+)N(CH_3)_3R'为功能基团制备了一种两性交换树脂,对其孔结构、交换容量以及红外进行表征测试,通过阴阳离子的静态吸附实验,研究其对MDEA溶液中Fe~(3+)和C_2O_4~(2-)的等温吸附性能、吸附热力学以及动力学特性。结果表明,该树脂中两性基团含量基本相等,以介孔结构为主;等温吸附行为符合Langmuir模型,以内盐键为主要吸附位点等当量的吸附阴阳离子,对高价离子和有机酸根离子具有更高的吸附选择性;Fe~(3+)和C_2O_4~(2-)在两性树脂上的吸附符合以外扩散为控制步骤的Lagergren拟二级吸附模型,是混乱度减小的自发放热过程。
An amphoteric exchange resin was prepared by using RCOO~(-+)N(CH_3)_3R' as a functional group.The pore structure,exchange capacity and infrared were characterized.The static adsorption experiments of anions and cations were used to study Fe~(3+) in MDEA solution.Isothermal adsorption performance,adsorption thermodynamics and kinetics of C_2O_4~(2-).The results show that the content of amphiphilic groups in the resin is basically equal,mainly mesoporous structure;the isotherm adsorption behavior is consistent with the Langmuir model,and the internal salt bond is the equivalent adsorption site for the adsorption sites,and the high-valent ions and organic acid ions have higher adsorption selectivity;the adsorption of Fe~(3+) and C_2O_4~(2-) on the amphoteric resin conforms to the Lagergren pseudo-secondary adsorption model with the outer diffusion as the control step,which is the self-heating process with reduced chaos.
An amphoteric exchange resin was prepared by using RCOO~(-+)N(CH_3)_3R' as a functional group.The pore structure,exchange capacity and infrared were characterized.The static adsorption experiments of anions and cations were used to study Fe~(3+) in MDEA solution.Isothermal adsorption performance,adsorption thermodynamics and kinetics of C_2O_4~(2-).The results show that the content of amphiphilic groups in the resin is basically equal,mainly mesoporous structure;the isotherm adsorption behavior is consistent with the Langmuir model,and the internal salt bond is the equivalent adsorption site for the adsorption sites,and the high-valent ions and organic acid ions have higher adsorption selectivity;the adsorption of Fe~(3+) and C_2O_4~(2-) on the amphoteric resin conforms to the Lagergren pseudo-secondary adsorption model with the outer diffusion as the control step,which is the self-heating process with reduced chaos.
引文
[1]赵钰.天然气直接转化法脱硫技术[D].成都:西南石油大学,2007.
[2]Battani A,Sarda P,Prinzhofer A.Basin scale natural gas source,migration and trapping traced by noble gases and major elements:the Pakistan Indus basin[J].Earth&Planetary Science Letters,2000,181(1/2):229-249.
[3]周学厚,李延平.天然气脱硫净化方法的评价[J].天然气工业,1986,6(1):87-93.
[4]王开岳.天然气脱硫脱碳工艺发展进程的回顾---甲基二乙醇胺现居一支独秀地位[J].油气加工,2011,29(1):15-21.
[5]Linga H,Hinderaker G,Tykhelle B.The effect of hydrocarboncondensate and anti-foaming agents on the performance of CO2adsorption with actived MDEA[EB/OL].Framo Purification AS.http://www.d-foam.com/files/The Effect of Hydrocarbon Condensate and Antifoaming agents statoil 02.pdf.
[6]Pauley C R.Face the facts about amine foaming[J].Chem Eng Prog,1991,87(7):33-38.
[7]Pauley C R,Hashemi R,Caothien S.Ways to control aminunitfoaming offered[J].Oil Gas J,1989,87(50):67-75.
[8]范峥,黄风林,王迪,等.天然气脱硫溶液失活原因分析与降解机理研究[J].高校化学工程学报,2016,30(6):1436-1444.
[9]王军峰.天然气净化装置脱硫溶液失效机理分析及研究[D].西安:西安石油大学,2014.
[10]徐飞.天然气脱硫用吸收剂MDEA溶液起泡成因及机理研究[D].大庆:东北石油大学,2014.
[11]张小刚,张安琪,李爽佩,等.烟气CO2捕集系统有机胺液变质分析及对策[J].西北大学学报:自然科学版,2015,45(1):68-72.
[12]王开岳.天然气净化工艺:脱硫脱碳、脱水、硫黄回收及尾气处理[M].北京:石油工业出版社,2005:320-360.
[13]孟宪争.高比表面积两性树脂的制备与性能研究[D].上海:上海应用技术大学,2016.
[14]李丝丝,张红静,周明,等.聚苯乙烯微球的功能化及其应用进展[J].现代化工,2017(5):38-41.
[15]万霞.两性树脂总交换容量的测定[J].广州化学,1998(1):42-46.
[16]徐和德.强碱弱酸两性树脂吸附电解质机理[J].华南师范大学学报:自然科学版,1996(1):84-87.
[17]万霞.弱酸强碱两性树脂吸附盐的平衡研究[J].离子交换与吸附,1999(4):325-330.
[2]Battani A,Sarda P,Prinzhofer A.Basin scale natural gas source,migration and trapping traced by noble gases and major elements:the Pakistan Indus basin[J].Earth&Planetary Science Letters,2000,181(1/2):229-249.
[3]周学厚,李延平.天然气脱硫净化方法的评价[J].天然气工业,1986,6(1):87-93.
[4]王开岳.天然气脱硫脱碳工艺发展进程的回顾---甲基二乙醇胺现居一支独秀地位[J].油气加工,2011,29(1):15-21.
[5]Linga H,Hinderaker G,Tykhelle B.The effect of hydrocarboncondensate and anti-foaming agents on the performance of CO2adsorption with actived MDEA[EB/OL].Framo Purification AS.http://www.d-foam.com/files/The Effect of Hydrocarbon Condensate and Antifoaming agents statoil 02.pdf.
[6]Pauley C R.Face the facts about amine foaming[J].Chem Eng Prog,1991,87(7):33-38.
[7]Pauley C R,Hashemi R,Caothien S.Ways to control aminunitfoaming offered[J].Oil Gas J,1989,87(50):67-75.
[8]范峥,黄风林,王迪,等.天然气脱硫溶液失活原因分析与降解机理研究[J].高校化学工程学报,2016,30(6):1436-1444.
[9]王军峰.天然气净化装置脱硫溶液失效机理分析及研究[D].西安:西安石油大学,2014.
[10]徐飞.天然气脱硫用吸收剂MDEA溶液起泡成因及机理研究[D].大庆:东北石油大学,2014.
[11]张小刚,张安琪,李爽佩,等.烟气CO2捕集系统有机胺液变质分析及对策[J].西北大学学报:自然科学版,2015,45(1):68-72.
[12]王开岳.天然气净化工艺:脱硫脱碳、脱水、硫黄回收及尾气处理[M].北京:石油工业出版社,2005:320-360.
[13]孟宪争.高比表面积两性树脂的制备与性能研究[D].上海:上海应用技术大学,2016.
[14]李丝丝,张红静,周明,等.聚苯乙烯微球的功能化及其应用进展[J].现代化工,2017(5):38-41.
[15]万霞.两性树脂总交换容量的测定[J].广州化学,1998(1):42-46.
[16]徐和德.强碱弱酸两性树脂吸附电解质机理[J].华南师范大学学报:自然科学版,1996(1):84-87.
[17]万霞.弱酸强碱两性树脂吸附盐的平衡研究[J].离子交换与吸附,1999(4):325-330.