Saturated vapor pressure, crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H<sub>2</sub>O working pair

LUO Chunhuan; ZHANG Yuan; SU Qingquan

doi:10.11949/j.issn.0438-1157.20150230

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Saturated vapor pressure, crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H₂O working pair

更新时间：2025-12-10

- Saturated vapor pressure, crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H₂O working pair
- CIESC Journal Issue 4, Pages: 1110-1116(2016)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150230
  CLC： K019
- Online First：05 April 2016，
  
  Published：05 April 2016
- 稿件说明：
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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]. CIESC Journal, 2016, (4): 1110-1116. DOI: 10.11949/j.issn.0438-1157.20150230.
DOI：

LUO Chunhuan, ZHANG Yuan, SU Qingquan. Saturated vapor pressure, crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H₂O working pair[J]. CIESC Journal, 2016, (4): 1110-1116. DOI: 10.11949/j.issn.0438-1157.20150230. DOI：

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。

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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Saturated vapor pressure, crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H2O working pair

DOI：10.11949/j.issn.0438-1157.20150230

摘要

Abstract

关键词

Keywords

references

Saturated vapor pressure, crystallization temperature and corrosivity of LiBr-[BMIM]Cl/H₂O working pair