含有单乙醇胺和降解产品的碳酸水溶液的热物理行为
Clàudia Rosa Hernández Narciso1,2, Cristina G Martínez1,2, Brendan O'Connell2
1Department of Chemical Engineering and Materials Science, IQS, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain.
Journal of chemical and engineering data
|December 2, 2024
概括
单乙胺 (MEA) 的降解显著改变了对于二氧化碳捕获至关重要的溶剂特性. 了解这些变化,特别是来自像HEIA这样的产品,对于工业应用至关重要.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 单乙胺 (MEA) 广泛用于燃烧后的二氧化碳捕获.
- MEA降解产品可能会影响溶剂性能和工艺效率.
- 了解这些影响对于工业二氧化碳捕获作业至关重要.
研究的目的:
- 通过实验来描述MEA降解产品对溶剂物理化学性质的影响.
- 为降解MEA溶液的密度,表面张力和粘度提供新的数据.
- 评估特定降解产品 (如HEIA) 对溶剂行为的影响.
主要方法:
- 确定关键的MEA降解产品:佐利丁-2-one (OZD),N-(2-基乙烯) 乙二胺 (HEEDA),和1-(2-基乙烯) -2-imidazolidinone (HEIA).
- 测量部分碳化溶液的密度,表面张力和粘度,其中有不同的MEA/降解产品摩尔比率.
- 单独分析HEIA以确定其蒸汽压力和其水溶液的特性,在不同的质量分数.
主要成果:
- 由于存在降解产物,MEA溶液的物理化学性质 (密度,表面张力,粘度) 发生显著变化.
- 确定HEIA是一种稳定且具有影响力的降解产物,影响溶剂特性.
- 实验数据显示,降解和新鲜MEA溶液之间的性能差异明显.
结论:
- 降解产品可测量地改变水性MEA溶剂的物理化学特性.
- 这些发现对于优化和预测工业二氧化碳捕获系统的性能至关重要.
- 对降解氨基溶液的准确性质数据是有效的工艺设计和管理所必需的.
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