| LiBr-[BMIM]Cl/H2O工质对的饱和蒸气压、结晶温度和腐蚀性 |
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| 引用本文： | 罗春欢,张渊,苏庆泉.LiBr-[BMIM]Cl/H2O工质对的饱和蒸气压、结晶温度和腐蚀性[J].化工学报,2016,67(4):1110-1116. |
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| 作者姓名： | 罗春欢 张渊 苏庆泉 |
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| 作者单位： | 1. 北京科技大学机械工程学院, 北京 100083;
2. 北京科技大学北京市高校节能与环保工程研究中心, 北京 100083 |
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| 基金项目： | 中央高校基本科研业务费专项资金项目(FRF-TP-14- 022A1);广东省教育部产学研结合项目(2009A090100032)。 |
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| 摘 要： | 为了解决LiBr/H2O工质对易结晶和腐蚀性强的问题,提出了LiBr-BMIM]Cl/H2O和LiBr-BMIM]Br/H2O新型工质对,研究了离子液体 BMIM]Cl和BMIM]Br对LiBr/H2O结晶温度和饱和蒸气压的影响。对质量比为2.5的LiBr-IL(ionic liquids)/H2O的饱和蒸气压、结晶温度和腐蚀性进行了测定并与LiBr/H2O的进行了比较,结果表明BMIM]Cl/H2O和BMIM]Br/H2O的饱和蒸气压与质量分数低8%~9%的LiBr/H2O的饱和蒸气压基本相同。在常用工作浓度范围内,LiBr-BMIM]Cl/H2O的结晶温度比相同吸收能力的LiBr/H2O的低约30℃。在相同的腐蚀条件下,LiBr-BMIM]Cl/H2O对碳钢的腐蚀性明显小于LiBr/H2O,对紫铜的腐蚀性与LiBr/H2O的基本相同。因此,采用LiBr-BMIM]Cl/H2O作为替代工质对具有一定的应用潜力。
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| 关 键 词： | 工质对 离子液体 饱和蒸气压 结晶温度 腐蚀 |
| 收稿时间： | 2015-02-13 |
| 修稿时间： | 2015-10-11 |
Saturated vapor pressure,crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H2O working pair |
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| LUO Chunhuan,ZHANG Yuan,SU Qingquan.Saturated vapor pressure,crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H2O working pair[J].Journal of Chemical Industry and Engineering(China),2016,67(4):1110-1116. |
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| Authors: | LUO Chunhuan ZHANG Yuan SU Qingquan |
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| Affiliation: | 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Beijing Engineering Research Center for Energy Saving and Environnental Protection, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | In order to solve the problems of crystallization and corrosion for LiBr/H2O, LiBr-BMIM]Cl/H2O and LiBr-BMIM]Br/H2O were proposed as new working pairs. The influences of ionic liquids on crystallization temperatures and saturated vapor pressures of LiBr/H2O were investigated. The saturated vapor pressures, crystallization temperatures and corrosivity of LiBr-IL/H2O with a mass ratio of 2.5 were measured and compared with that of LiBr/H2O. The results showed that the saturated vapor pressures of BMIM]Cl/H2O and BMIM]Br/H2O were almost the same as that of LiBr/H2O with a 8%-9% lower concentration. In general operation concentration range, the crystallization temperatures of LiBr-BMIM]Cl/H2O were about 30℃ lower than that of LiBr/H2O with the same absorption ability. Under the same corrosion conditions, the corrosion rate of carbon steel for LiBr-BMIM]Cl/H2O was obviously smaller than that for LiBr/H2O, and the corrosion rate of copper for LiBr-BMIM]Cl/H2O was nearly the same as that for LiBr/H2O. As an alternative working pair, LiBr-BMIM]Cl/H2O has a great potential for absorption heat pump systems. |
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| Keywords: | working pair ionic liquids saturated vapor pressure crystallization temperature corrosion |
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