热力发电2025，Vol.54Issue(9)：79-85,7.DOI:10.19666/j.rlfd.202411234
改性硅胶对风电齿轮油中Fe3+的吸附性能
Adsorption properties of modified silica gel on Fe3+in wind turbine gear oil
摘要
Abstract
A comparative test was conducted on operating oil samples from wind turbine gear oil and a fresh oil sample,revealing that the Fe3+content was the most rapidly deteriorating indicator.The SG-PEI adsorbent was prepared by loading polyethyleneimine(PEI)onto a silica gel material(SG)through impregnation modification,and its characteristics were evaluated.The adsorption isotherms and kinetics of Fe3+on SG-PEI were thoroughly investigated.The results indicated that,the adsorption isotherm of Fe3+on SG-PEI conforms to Langmuir model.The saturated adsorption capacity of SG-PEI for Fe3+was 28.71 mg/g,representing a 39.2%improvement compared to SG(20.63 mg/g).The adsorption process of Fe3+on SG-PEI adhered to the pseudo-second-order kinetic model,with adsorption process occurring as a spontaneous exothermic reaction.Under optimal conditions of an adsorption temperature of 60℃,an adsorption time of 120 min,and an oil-adsorbent ratio of 100:3,the removal rate of Fe3+from wind turbine gear oil by SG-PEI reached 96.23%,which is 29.43 times higher than that of the 801 adsorbent(3.27%)and 185.06 times higher than that of Al2O3(0.52%).The SG-PEI has a good prospect for applications due to its high adsorption capacity and selectivity for Fe3+.关键词
齿轮油/吸附再生/金属脱除/硅胶/改性Key words
gear oil/adsorption regeneration/metal removal/silica gel/modification引用本文复制引用
底广辉,李师圆,黄泽宇,夏启斌..改性硅胶对风电齿轮油中Fe3+的吸附性能[J].热力发电,2025,54(9):79-85,7.基金项目
华北电力科学研究院有限责任公司科研项目(KJZ2023119)Scientific Research Project of North China Electric Power Research Institute Co.,Ltd.(KJZ2023119) （KJZ2023119）
