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›› 2013, Vol. 13 ›› Issue (2): 292-296.

• 生化工程专栏 • 上一篇    下一篇

碳化氨水中总碳含量和总氨含量的分析及测定

刘明 杨鹏波 王倩 田原 丛威   

  1. 中国科学院过程工程研究所生化工程国家重点实验室 中国科学院过程工程研究所生化工程国家重点实验室 中国科学院过程工程研究所生化工程国家重点实验室 中国科学院过程工程研究所生化工程国家重点实验室 中国科学院过程工程研究所生化工程国家重点实验室
  • 收稿日期:2013-02-04 修回日期:2013-03-13 出版日期:2013-04-20 发布日期:2013-04-20
  • 通讯作者: 刘明

Analysis and Measurement of Total CO2 and Total NH3 in Carbonating Ammoniacal Solution

LIU Ming YANG Peng-bo ZHANG Li-ye, TIAN Yuan CONG Wei   

  1. National Key Lab. Biochem. Eng., Institute of Process Engineering, Chinese Academy of Sciences State Key Lab of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences State Key Lab. Biochem. Eng., Institute of Process Engineering, Chinese Academy of Science National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences State Key Lab. Biochem. Eng., Inst. Process Eng., CAS
  • Received:2013-02-04 Revised:2013-03-13 Online:2013-04-20 Published:2013-04-20
  • Contact: LIU Ming

摘要: 用过量CaCl2将含碳离子和含氮离子分别转变为CaCO3和NH4+(或NH3和NH4+),通过甲醛法测定上清液中氮量计算得到碳化氨水中总氨浓度,用EDTA滴定过量Ca2+得到碳化氨水中总碳浓度. 结果表明,总碳和总氨浓度的测定结果与理论值间的相对误差分别在1.0%和1.5%以内. 该方法能快速准确测定碳化氨水溶液中含碳量和含氨量,进而得到氨水吸收CO2过程中CO2负载量.

关键词: 碳化氨水, 甲醛法, 总氨浓度, EDTA滴定法, 总碳浓度

Abstract: An excessive CaCl2 solution was applied to convert all carbonates and NH2COO- into CaCO3 and NH4+ or (NH3 and NH4+), respectively. Then after CaCO3 was removed by filtrating, the concentration of total NH3 in filter liquor could be obtained by measuring the amount of nitrogen with formol-titration method. And the concentration of total CO2 could be measured by determining the excessive amount of Ca2+ with EDTA titration method. The results showed that relative error of the method for determining the concentrations of total CO2 and total NH3 was less than 1.0% and 1.5%, respectively. Therefore, this method could be adapted to determinate the important index, CO2 loading, when CO2 was absorbed into aqueous ammonia.

Key words: carbonating ammoniacal solution, formol-titration method, total NH3, EDTA titration method, total CO2

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