无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2019, Vol. 51 ›› Issue (6): 41-44.

• 工业技术 • 上一篇    下一篇

油田水制备电池级碳酸锂研究

潘磊1,许飞龙1,李建楠2,李龙涛1,夏明强1,戴家生1   

  1. 1. 浙江煤炭地质局勘探一队,浙江湖州 313004
    2. 湖州中煤地质工程有限公司
  • 收稿日期:2019-06-20 出版日期:2019-06-10 发布日期:2020-05-12
  • 作者简介:潘磊(1983— ),男,硕士研究生,工程师,主要从事环境和盐湖化工方面的研究;E-mail:pl_0606@163.com。

Research of battery grade Li2CO3 preparation by oilfield water

Pan Lei1,Xu Feilong1,Li Jiannan2,Li Longtao1,Xia Mingqiang1,Dai Jiasheng1   

  1. 1. Zhejiang Administration of Coal Geology the First Team of Exploration,Huzhou 313004,China
    2. Huzhou China Coal Geological Engineering Co.,Ltd.
  • Received:2019-06-20 Online:2019-06-10 Published:2020-05-12

摘要:

油田采油过程中会产生大量含有丰富无机盐资源的油田水,油田水中除含有大量钠、钾、镁等离子外,还富集有多种微量元素如锂、铷等离子。将油田水中富含的锂资源回收利用,不仅避免了油田水直接排放造成的环境污染,还对资源的最大化利用和可持续发展具有重要意义。以某油田水为原料,采用蒸发浓缩、有机相去除、冷冻-芒硝兑卤复合工艺除钙,得到初级油田水;然后分别采用化学法和吸附法进一步对初级油田水进行除钙、镁,得到原料油田水;最后将原料油田水与碳酸钠溶液反应,制备电池级碳酸锂。实验结果表明:化学法和吸附法都能很好地去除油田水中的钙、镁离子;采用化学法和吸附法制备的原料油田水与纯碱溶液反应制备的碳酸锂产品,其纯度都在99.7%以上,其中杂质离子的含量满足电池级碳酸锂的要求。该方法成功实现了油田水中锂资源的回收利用。

关键词: 油田水, 电池级碳酸锂, 碳酸钠

Abstract:

A large number of oilfield water which is rich in inorganic salt resources is produced in the process of oil extrac-tion,in addition to a large amount of sodium,potassium and magnesium plasma,oilfield water is also enriched with a variety of trace elements such as lithium and rubidium.Recovery of lithium in oilfield water not only avoids environmental pollution,but also has great significance for maximizing the utilization of resources and sustainable development.The primary oilfield water was obtained from oilfield water by evaporation,organic phase removal,freezing and mirabilite brine mixing process to remove calcium.Secondly,raw oilfield water was obtained by further removed calcium and magnesium through chemical method and adsorption method respectively from primary oilfield water.Finally,battery-level lithium carbonate was prepared by raw oilfield water reacted with sodium carbonate solution.The experimental results showed that both chemical and adsorp-tion methods could remove calcium and magnesium ions from oilfield water,the purity of lithium carbonate was over 99.7% prepared by raw oilfield water and soda solution,the content of impurity met the requirement of battery-level lithium carbonate.It has successfully realized the recovery and utilization of lithium resources in oilfield water.

Key words: oilfield water, battery grade Li2CO3, Na2CO3

中图分类号: