吸附法脱除低碳烷烃中微量甲醇  

Removal of trace methanol from light alkanes by adsorption method

作　　者：姜玉坤 丁辉 朱静东 曹改瑜 张艺馨 郭戈 孙承林[2] JIANG Yu-kun;DING Hui;ZHU Jing-dong;CAO Gai-yu;ZHANG Yi-xin;GUO Ge;SUN Cheng-lin(College of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;PetroChina Changqing Oilfield(Yulin)Oil and Gas Co.,Ltd.,Yulin 719000,China)

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142 [2]中国科学院大连化学物理研究所,辽宁大连116023 [3]长庆油田(榆林)油气有限公司,陕西榆林719000

出　　处：《现代化工》2024年第S02期146-148,154,共4页Modern Chemical Industry

基　　金：国家重点研发计划项目(2023YFE0101000)。

摘　　要：低碳烃中微量的甲醇等含氧化合物会对其后续应用和装置运行造成不利影响。以含有1.2 wt%甲醇的正己烷为模型底物,利用甲醇独特的反应性能和甲醇与正己烷的极性差异,分别考察氯化钙、磺化树脂、大孔氧化硅和4A分子筛等吸附剂的甲醇脱除性能。实验结果表明,磺化树脂具有良好的甲醇脱除性能和再生重复性。在甲醇去除率≥90%的条件下,磺化树脂对甲醇的有效吸附量为0.41 g/g,磺化树脂经过再生后吸附甲醇性能与新鲜树脂相比基本不变,可重复利用,具有良好的实用性。Trace oxygen-containing compounds such as methanol in light alkanes may cause unfavorable impact on the subsequent applications of light alkanes and the operation of industrial plants.Herein,n-hexane containing 1.2 wt.%methanol is used as model substrate to study the adsorption properties of methanol over CaCl2,sulfonated resin,microporous SiO2 and 4A zeolite,respectively by utilizing the unique reactivity of methanol and the polarity difference between methanol and n-hexane.Experimental results show that sulfonated resin represents high performance in removing methanol and good regeneration performance.Under the condition that methanol removal is higher than 90%,the adsorption capacity of methanol over sulfonated resin is 0.41 g·g-1.There is little change between regenerated sulfonated resin and fresh one,indicating reusability and good application prospect.

关 键 词：低碳烷烃 甲醇脱除 磺化树脂 吸附法 极性 

分 类 号：TE645[石油与天然气工程—油气加工工程]