改性沸石提取秸秆消解液中钾的工艺探究.pdfVIP

第46卷第4期 应　 用　 化　 工 Vol.46 No.4 2017年4月 Applied Chemical Industry Apr.2017 改性沸石提取秸秆消解液中钾的工艺研究 1 2 刘军凯 ,安莲英 (1.燕京理工学院化工与材料工程学院,河北 燕郊　 065201;2.成都理工大学 材料与化学化工学院,四川 成都　 610059) 摘　 要:利用经NH HCO 溶液改性的铵型沸石吸附分离消解液中的钾,得出试验参数:上柱液浓度为3.97 mg/ mL, 4 3 高径比24,上柱液流速为0.067 mL/ (min ·mL沸石)。 采用NH HCO 溶液为解脱液,实验优化解脱条件参数为:用 4 3 1mol/ L的NH HCO 溶液以0.083 mL/ (min ·mL沸石)流速解脱,钾解析率可达97%以上。 4 3 关键词:改性沸石;吸附;解脱 中图分类号:TQ016.1;TQ028　 　 文献标识码:A　 　 文章编号:1671-3206(2017)04-0668-03 Study on extraction process of modified zeolite straw in the digestion solution of potassium 1 2 LIUJun-kai ,AN Lian-ying (1.School of Chemical and Materials Engineering,Yanching Institute of Technology,Yanjiao065201,China;2.College of Materials and Chemistry Chemical Engineering,Chengdu University of Technology,Chengdu610059,China) Abstract:Ammonium form of natural zeolite was used for adsorption and separation K in digestion solu- tion.The optimal test parameters were as follows:the column of the concentration was 3.97 mg/ mL, height diameter ratio was24,velocity was0.067 mL/ (min ·mL zeolite).Used NH HCO as eluant liq- 4 3 uid,the optimal extraction test parameters were 1 mol/ L NH HCO ,velocity was0.083 mL/ (min ·mL 4 3 zeolite),K resolution can reach above97%. Key words:ammonium type zeolite;adsorbent;desorption