学术论文

      基于电位法和酸碱度法的醇胺溶液吸收二氧化碳

      Amine solutions absorbing carbon dioxide based on methods of potentiometry and pH

      摘要:
      醇胺溶液具有对二氧化碳吸收速率快、吸收容量大及再生简单的特点,采用电位法和酸碱度法对一乙醇胺(MEA)、二乙醇胺(DEA)、三乙醇胺(TEA)吸收二氧化碳特性进行研究,揭示电位、酸碱度与吸收速率、吸收容量之间的内在联系,并考察醇胺溶液再生二氧化碳的特性,提出测定溶液中醇胺浓度和CO2体积分数的新方法.结果表明:MEA和DEA是优良的醇胺吸收剂;做出速率-电位曲线或速率-酸碱度曲线,就可以利用电位法或酸碱度法对醇胺溶液吸收二氧化碳的反应程度进行估测.
      Abstract:
      The amine solution is characterized by quick absorption,large absorption capacity and simple regeneration. The potentiometry method and pH method were used to study carbon dioxide absorption characteristics in MEA, DEA and TEA solution. The relations among electric potential, pH, absorption rate, absorption capacity were studied. The new measurement methods about amine solution concentration and carbon dioxide concentration were presented. The results show that MEA and DEA are good amine solutions. Also after drawing the relation curve between absorption rate and potentiometry or absorption rate and pH, the potentiometry method (or pH method) can be used to analyze the absorption extent of CO2 in amine solutions.
      作者: 杨向平 [1] 陆诗建 [2] 高仲峰 [3] 李清方 [4] 张建 [4]
      Author: YANG Xiang-ping [1] LU Shi-jian [2] GAO Zhong-feng [3] LI Qing-fang [4] ZHANG Jian [4]
      作者单位: 中国石油大学,化学化工学院,山东,东营,257061 中国石油大学,化学化工学院,山东,东营,257061;胜利工程设计咨询公司,山东,东营,257026 新汶矿业集团有限责任公司,山东,新泰,271233 胜利工程设计咨询公司,山东,东营,257026
      年,卷(期): 2010, 34(2)
      分类号: TE992.1
      机标分类号: O61 TQ5
      在线出版日期: 2010年6月30日
      基金项目: 国家科技支撑计划基金