溶液除湿脱盐一体化机理与系统集成方法研究

The climate with high temperature, high humidity and high salt-fog on the islands seriously affects human health and the lifespan of instruments and equipment; the direct discharge of a large number of low-grade waste heat reduces the energy efficiency on the islands. Therefore, it is of great significance to use the low-grade waste heat on the islands to obtain fresh air with appropriate temperature and humidity and low salt-fog. In view of problems caused by the independent process of dehumidification and salt-fog filtration in the previous study, a new method on the integration of liquid desiccant dehumidification and salt-fog filtration is proposed in this project. Through theoretical analysis, numerical simulation and experimental research, the removal mechanism of salt-fog in hot and humid air and directional separation of single component from ternary solution are studied, and the structure of heat and mass exchange module is optimized. We can reveal the mass transfer mechanism of salt-fog between the solution and humid air with salt-fog, and master the mechanism and method of the directional separation of single component from ternary solution, and obtain appropriate hygroscopic solution and the efficient heat and mass exchange structure suitable for the integration process. On this basis, a system integrating liquid desiccant dehumidification and salt-fog filtration driven by low-grade waste heat is proposed, providing a new idea of how to solve the equipment corrosion problem caused by the "three highs", to improve the quality of human living environment and to improve the energy efficiency on the islands.

海岛高温、高湿、高盐雾的气候严重影响岛上仪器设备的使用寿命和人员的身体健康，而大量低品位余热的直接排放降低海岛能源利用率，因此利用岛上低品位余热获得合适温湿度和低盐雾的空气具有重要意义。针对以往研究中单独除湿或脱除盐雾所存在的问题，本项目提出溶液除湿脱盐一体化的新方法。拟通过理论分析、数值模拟和实验研究相结合的方法，对湿热空气盐雾脱除机理、三元溶液组分定向分离展开研究，并对热质交换模块的结构进行优化。最终获得含盐雾湿热空气与溶液热质交换时盐雾微粒的传递机理，掌握三元溶液组分定向分离的机理和方法，获得适用于一体化过程的吸湿溶液及高效的热质交换结构，在此基础上构建低品位余热驱动的溶液除湿脱盐一体化系统，为解决海岛“三高”引起的设备腐蚀问题、提高人居环境质量、提高海岛能源利用率提供了新思路。

海岛高温、高湿、高盐雾的气候严重影响岛上仪器设备的使用寿命和人员的身体健康，而大量低品位余热的直接排放降低海岛能源利用率，因此利用岛上低品位余热获得合适温湿度和低盐雾的空气具有重要意义。针对以往研究中单独除湿或脱除盐雾所存在的问题，本项目提出溶液除湿脱盐一体化的新方法。通过理论分析、数值模拟和实验研究相结合的方法，对湿热空气盐雾脱除机理、三元溶液组分定向分离展开研究，并对热质交换模块的结构进行优化。最终获得含盐雾湿热空气与溶液热质交换时盐雾微粒的传递机理，掌握三元溶液组分定向分离的机理和方法，获得适用于一体化过程的吸湿溶液及高效的热质交换结构，在此基础上构建低品位余热驱动的溶液除湿脱盐一体化系统，为解决海岛“三高”引起的设备腐蚀问题、提高人居环境质量、提高海岛能源利用率提供了新思路。