化工进展 ›› 2019, Vol. 38 ›› Issue (05): 2093-2102.DOI: 10.16085/j.issn.1000-6613.2018-1522

• 化工过程与装备 • 上一篇    下一篇

3D打印多通道微反应器用于萃取分离In3+和Fe3+

周澳1,2(),李熙腾1,2,李鑫培1,2,3(),巨少华1,2,3(),张利华1,2,3   

  1. 1. 省部共建复杂有色金属资源清洁利用国家重点实验室,云南 昆明 650093
    2. 昆明理工大学冶金与能源工程;学院,云南 昆明 650093
    3. 昆明理工大学非常规冶金省部共建重点实验室,云南 昆明 650093
  • 收稿日期:2018-07-22 修回日期:2018-10-03 出版日期:2019-05-05 发布日期:2019-05-05
  • 通讯作者: 李鑫培,巨少华
  • 作者简介:<named-content content-type="corresp-name">周澳</named-content>(1990—),男,硕士研究生,研究方向为微流体。E-mail:<email>583212519@qq.com</email>。
  • 基金资助:
    国家自然科学基金(U1302271);云南省应用基础研究计划(2015FA017)

Extraction and separation of In3+ and Fe3+ using a 3D printing multi-channel microreactor

Ao ZHOU1,2(),Xiteng LI1,2,Xinpei LI1,2,3(),Shaohua JU1,2,3(),Lihua ZHANG1,2,3   

  1. 1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming 650093, Yunnan, China
    2. Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
    3. Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
  • Received:2018-07-22 Revised:2018-10-03 Online:2019-05-05 Published:2019-05-05
  • Contact: Xinpei LI,Shaohua JU

摘要:

将微流体萃取技术与新兴的3D打印技术相结合,设计并制造了一种结构较为复杂的多通道微流体萃取反应器,通过在微反应器内增加混合反应通道的数目来放大其处理量,以期使3D打印多通道微反应器在能够继承微流体单级萃取效率高优点的同时,也能够极大地扩大其处理量。反应器的结构特征主要包括两相入口、液滴筛板、混合萃取通道、混合液汇集腔及混合液出口等。将此种反应器用于不同初始条件下从硫酸溶液中萃取和分离In3+和Fe3+的实验,结果表明:随着两相接触时间的增长,萃取剂P204对于金属离子的萃取率呈现出先减小,再增大的趋势;溶液中In3+和Fe3+的分离系数在pH为0.7、接触时间为90s、萃取剂体积分数为30%时,达到最高值381.9。对初始溶液pH、萃取剂在油相中的体积分数、两相的接触时间等单因素对In3+和Fe3+的萃取率和分离系数的影响作了详细调查。

关键词: 3D打印, 溶剂萃取, 微流体, 两相流, 流体力学, 流动

Abstract:

A multi-channel microfluidics extraction reactor with complex structure was designed and manufactured by combining the microfluidics extraction technology with the emerging 3D printing technology. The extraction capacity can be enlarged by increasing the number of mixing channel in the microreactor. We expect the “3D printing multi-channel microreactor” to inherit the high extraction efficiency advantage of microfluid at a single stage, and to greatly expand its processing capacity at the same time. The main feature structures of the microreactor include inlet, droplet sieve plate, mixing channel, mixed liquid gathering chamber and mixed liquid outlet. The microreactor was used for the extraction and separation of In3+ and Fe3+ from sulfuric acid solution under different initial conditions. The results showed that the extraction rate of In3+ reduced at first and then rose with the increase of the contact time of two phases. The separation coefficient of In3+ and Fe3+ reached the highest value 381.9 at the following conditions: the initial aqueous pH was 0.7, contact time of the two immiscible phases was 90s, and the volume fraction of the extractant P204 was 30%. The effects of the initial pH , the volume fraction of the extractant in the oil phase and the contact time of the two phases on the extraction rate and the separation coefficient of the In3+ and Fe3+ were investigated in detail.

Key words: 3D printing, solvent extraction, microfluidics, two-phase flow, fluid mechanics, flow

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