| 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C02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。 |
| 关键词: 二氧化碳 醇胺溶液 电位法 pH法 |
| DOI：10.3969/j.issn.1673-5005.2010.02.028 |
| 分类号:TE 992.1 |
| 基金项目:国家科技支撑计划基金项目(2008BAE65B00) |
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| Amine solutions absorbing carbon dioxide based on methods of potentiometry and pH |
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YANG Xiang-ping1,LU Shi-jian1,2,GAO Zhong-feng3,LI Qing-fang2,ZHANG Jian2
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(1. College of Chemistry and Chemical Engineering in China University of Petroleum，Dongying 257061, China;2. Shengli Engineering & Consulting Company Limited，Dongying 257026，China ;3. Xinwen Mining Group Company Limited9 Xintai 271233, China)
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| 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 C02 in amine solutions. |
| Key words: carbon dioxide amine solution potentiometry method pH method |
