混合醇萃取剂从浓缩盐湖卤水中萃取提硼的实验研究
发布时间：2019-03-03 09:42
【摘要】：以2-乙基-1,3-己二醇和异丁醇按照一定体积比组成混合萃取剂、航空煤油为稀释剂,萃取某硫酸盐型盐湖浓缩卤水中的硼。对萃取剂浓度、浓缩卤水pH、萃取相比、萃取温度、萃取时间、饱和萃取容量和反萃剂浓度、反萃相比等进行了实验研究。结果表明:2-乙基-1,3-己二醇、异丁醇和航空煤油体积比为1∶2∶3,卤水pH为3,萃取相比为1∶1,温度为20℃,萃取时间为5 min;将得到的富硼有机相用0.25 mol/L氢氧化钠溶液进行反萃,反萃相比为1∶2、温度为30℃、反萃取时间为15 min。经三级萃取及反萃,卤水中硼质量浓度降为0.8 mg/L,硼萃取率为99.99%,反萃率为99.78%,硼回收率为99.77%,萃取效果好。
[Abstract]:A mixed extractant composed of 2-ethyl-1,3-hexanediol and isobutanol in a certain volume ratio and aviation kerosene as diluent was used to extract boron from brine in a sulfate-type salt lake. The extraction agent concentration, pH, extraction ratio of concentrated brine, extraction temperature, extraction time, saturation extraction capacity, stripping agent concentration and stripping ratio were studied experimentally. The results showed that the volume ratio of 2-ethyl-1,3-hexanediol, isobutanol and aviation kerosene was 1? 2? 3, the pH of brine was 3, the extraction ratio was 1? 1, the temperature was 20 鈩，
本文编号：2433586
[Abstract]:A mixed extractant composed of 2-ethyl-1,3-hexanediol and isobutanol in a certain volume ratio and aviation kerosene as diluent was used to extract boron from brine in a sulfate-type salt lake. The extraction agent concentration, pH, extraction ratio of concentrated brine, extraction temperature, extraction time, saturation extraction capacity, stripping agent concentration and stripping ratio were studied experimentally. The results showed that the volume ratio of 2-ethyl-1,3-hexanediol, isobutanol and aviation kerosene was 1? 2? 3, the pH of brine was 3, the extraction ratio was 1? 1, the temperature was 20 鈩，
本文编号：2433586
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