分子筛催化剂晶化母液有效成分絮凝回收的研究

摘要

确定了可见分光光度计法测定分子筛催化剂晶化母液和丙烯酸絮凝后清液的磷含量，实验比较研究了不同絮凝剂回收分子筛催化剂晶化母液中有效成分的效果，通过单因素实验重点研究了丙烯酸作为絮凝剂在不同的浓度、絮凝温度、絮凝时间等因素对絮凝效果的影响，实验确定的最佳絮凝条件为：10.0 mL母液，丙烯酸（98.75％）2.0 mL，温度22.2℃，反应时间6 s，磷回收率可达到为94.3％。%The phosphorus contents of the crystallized mother liquor of zeolite catalysts for the flocculants were determined quantitatively by spectrophotometer.The flocculation effects were compared for effective components from the crystallized mother liquor of zeolite catalysts.Based on flocculation experiments of acrylic acid, the flocculant concentration, flocculation temperature, flocculation time were investigated by single factor experiments.The results showed that the optimal flocculating conditions were 2.0 mL acrylic acid for 98.75%concentration added in 10 mL of the crystallized mother liquor, the flocculation temperature was controlled at 22.2℃, flocculation time was 6 s.The recovery efficiency for phosphorus contents of the mother liquor was 94.3%.