双氧水吸附净化工艺中失活树脂的失活机制及再生方法研究  

Study on deactivation mechanism and regeneration method of deactivated resin in hydrogen peroxide adsorption purification process

作　　者：豆振江 杜玮辰 韩林 朱丹 吴家秋 刘清 汤吉海[1,2] 崔咪芬 乔旭[1,2] DOU Zhenjiang;DU Weichen;HAN Lin;ZHU Dan;WU Jiaqiu;LIU Qing;TANG Jihai;CUI Mifen;QIAO Xu(College of Chemical Engineering,Nanjing Tech University,Nanjing 211800,China;State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 211800,China;Zhejiang Heng Lan Science&Technology Co.Ltd.,Hangzhou 311200,China)

机构地区：[1]南京工业大学化工学院,江苏南京211800 [2]南京工业大学材料化学工程国家重点实验室,江苏南京211800 [3]浙江恒澜科技有限公司,浙江杭州311200

出　　处：《南京工业大学学报（自然科学版）》2024年第1期20-27,共8页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：浙江恒澜科技有限公司横向项目(NTHY-A20200103)。

摘　　要：为解决现有双氧水生产工艺中甲醇再生树脂不完全而导致树脂更换频率高的问题,通过借助高分辨液质联用、热重分析、傅里叶红外光谱、X线光电子能谱等表征手段分析了双氧水再生工艺中树脂吸附双氧水前后含有的有机杂质及无法完全再生脱附出来的杂质;选用了不同的再生剂对失活树脂进行再生,并通过傅里叶红外变换光谱对再生后树脂进行了表征分析,NaOH溶液处理后失活树脂中属于2甲基环己基醋酸酯的红外特征峰已经完全消失;然后配制了不同浓度的NaOH溶液对失活树脂的再生进行了条件优化,N 2吸脱附测试结果表明,当碱液浓度为0.25 mol/L时,失活树脂的比表面积恢复为575 m^(2)/g,高于甲醇再生后的失活树脂的412 m^(2)/g,其再生效果要优于甲醇再生。In addressing the frequent need for resin replacement due to incomplete regeneration in existing hydrogen peroxide(H 2O 2)production technology,this study analyzed organic impurities in LSA-5B resin before and after H 2O 2 adsorption,along with those impurities not fully desorbed from resin.Characterization was conducted using high-resolution liquid chromatography-mass spectrometry,thermogravimetric analysis,Fourier transform infrared spectroscopy,and X-ray photoelectron spectroscopy.Various regenerants were employed to regenerate the inactivated resin,with FT-IR result revealing the complete characteristic peak disappearance of 2-methylcyclohexyl acetate in the NaOH-treated deactivated resin.Consequently,NaOH solutions of various concentrations were tested to optimize the regeneration conditions for the inactivated resin.The results of the N 2 adsorption-desorption test showed that the specific surface area of the resin was recovered to 575 m^(2)/g using 0.25 mol/L NaOH,which was higher than 412 m^(2)/g observed from the resin regenerated with methanol,demonstrating a superior regeneration efficacy compared to methanol regeneration.

关 键 词：双氧水 失活树脂 有机污染物 2甲基环己基醋酸酯 再生研究 

分 类 号：TQ09[化学工程]