李阳阳,柳建华,张良,张嘉文
LI Yang-yang,LIU Jian-hua,ZHANG Liang,ZHANG Jia-wen

• 1:上海理工大学
• 2:上海市动力工程多相流动与传热重点试验室

摘要(Abstract)：

对高炉余热驱动鼓风除湿的再生部分进行了试验研究。针对某地全年不同气候条件,对采用Li Cl溶液脱湿鼓风进行了理论分析和1:200的模化试验研究,来验证利用余热驱动液体除湿中再生部分的规律性和可行性。试验结果显示,再生效果与溶液液气比、温度、浓度有关。液体除湿再生时存在最佳液气比,液气质量比在1.25时效率可达60.65%;再生过程中,溶液温度越高,再生效果越好;浓度越低,再生效果越好。溶液喷淋温度由62.2℃升至80.1℃,质交换效率由59.32%升高至71.35%,但从75.7℃升高至80.1℃,质交换效率仅增加0.95%。全年运行时,浓度保持40%不变,除湿采用冷却塔冷却,再生采用70℃溶液喷淋,改变进口势差对该地全年进行模拟。运行时系统中除湿量等于再生量,再生过程可调性强,对热源温度波动不敏感,操作方便,系统稳定。
The regenerative part of blast furnace dehumidification driven by blast furnace waste heat was researched experimentally. In view of different climatic conditions in a place throughout the year the theoretical analysis was made on dehumidifying blast using LiCl solution experimental research was conducted on the 1:200 model to verify the feasibility and regularity of the regenerative part in the liquid desiccant dehumidification driven by the waste heat. The experimental results show that the regeneration effect was related to the ratio of solution to gas,temperature and concentration. There was an optimum liquid/gas ratio in liquid desiccant regeneration. When the mass ratio of liquid to air was 1.25,the efficiency can reach 60.65%;the higher the solution temperature was,the better the regeneration effect; and the lower the concentration,the better the regeneration effect in the regeneration process. The spray temperature of the solution increased from 62.2℃ to 80.1℃,and the mass exchange efficiency increased from 59.32% to 71.35%,but when the spray temperature increased from 75.7 ℃ to 80.1 ℃,mass exchange efficiency increased only by 0.95%. During the whole year operation,the concentration was kept unchanged at 40%,the dehumidification was cooled by cooling tower,70℃ solution spray was used for the regeneration,and the potential difference at the inlet was changed to simulate the operation during the whole year. During the running,the amount of dehumidification in the system was equal to the amount of regeneration,the regeneration process can be adjusted easily,and was insensitive to the temperature fluctuation of the heat source,its operation was convenient and the system was stable.

关键词(KeyWords)： 高炉鼓风除湿;液体除湿;余热驱动再生
blast furnace dehumidification;liquid dehumidification;regeneration driven by waste heat

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李阳阳,柳建华,张良,张嘉文
LI Yang-yang,LIU Jian-hua,ZHANG Liang,ZHANG Jia-wen

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