无机盐工业

无机盐工业 ›› 2021, Vol. 53 ›› Issue (2): 42-46.doi: 10.11962/1006-4990.2020-0154

• 研究与开发 • 上一篇    下一篇

连续鼓泡法海水碳化制备碳酸钙文石的研究

李佳乐1,2,3(),王新宇1,2,3,陈天艺1,2,3,杨星硕1,赵颖颖1,2,3,4(),袁俊生1,2,3,4()   

  1. 1.河北工业大学化工学院,天津 300130
    2.海水资源高效利用化工技术教育部工程研究中心
    3.河北省现代海洋化工技术协同创新中心
    4.山东海化集团有限公司
  • 收稿日期:2020-08-12 出版日期:2021-02-10 发布日期:2021-02-06
  • 通讯作者: 赵颖颖,袁俊生
  • 作者简介:李佳乐(1994— ),男,硕士,研究方向为海水资源综合利用;E-mail: 861065382@99.com
  • 基金资助:
    国家自然科学基金(21306037)

Preparation of calcium carbonate aragonite by continuous bubbling carbonization in seawater

Li Jiale1,2,3(),Wang Xinyu1,2,3,Chen Tianyi1,2,3,Yang Xingshuo1,Zhao Yingying1,2,3,4(),Yuan Junsheng1,2,3,4()   

  1. 1. School of Chemical Engineering,Hebei University of Technology,Tianjin 300130,China
    2. Engineering Research Center for Efficient Utilization of Seawater Resources,Ministry of Education
    3. Hebei Modern Marine Chemical Technology Collaborative Innovation Center
    4. Shandong Haihua Group Co.Ltd.
  • Received:2020-08-12 Online:2021-02-10 Published:2021-02-06
  • Contact: Yingying Zhao,Junsheng Yuan

摘要:

海水脱钙烟道气固碳法,在软化海水和处理烟道气的同时,可通过过程调控获得纯净的碳酸钙副产品,实现“变废为宝”。以海水和模拟烟道气为原料,氧化镁为调节剂,采用鼓泡方式实现气液接触和连续操作,并制备出高纯度碳酸钙文石。考察了镁离子浓度、温度、液位、表面活性剂——十二烷基苯磺酸钠(SDBS)浓度等因素对固体产品纯度、粒度和形貌的影响。通过扫描电镜(SEM)、X射线衍射仪(XRD)、红外光谱仪(FT-IR)和激光粒度分析仪对其固体产品进行表征。结果表明:实验可以得到纯净的碳酸钙文石;最小平均粒径为11.729 μm;升高温度和增大液位容易造成大团聚体;产品的平均粒径随着十二烷基苯磺酸钠(SDBS)浓度增大而增大。

关键词: 海水, 文石, 固碳, 鼓泡塔

Abstract:

The flue gas carbon fixation by seawater decalcification method,not only soften seawater seawate and deal with flue gas,but also can obtain pure calcium carbonate as by-products through process control,achieving “turning waste into treasure”.With seawater and simulated flue gas as raw materials and magnesium oxide as regulator,gas-liquid contact and continuous operation were realized by bubbling way and calcium carbonate aragonite was prepared as well.The effects of factors,such as magnesium ion concentration,temperature,liquid level,concentration of surfactant sodium dodecylbenzene sulfonate(SDBS),on the purity,particle size and morphology of solid products were investigated.The solid products were characterized by SEM,XRD,FT-IR and Mastersizer 2000.The results of the study indicated that pure calcium carbonate aragonite can be obtained with the minimum average particle size of 11.729 μm.Increasing temperature and liquid level were likely to cause larger aggregates.And the average particle size of the products increased with the increasing of SDBS concentration.

Key words: seawater, aragonite, carbon sequestration, bubbling tower

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