添加剂不同气相添加方式对溴化锂水溶液吸收水蒸气的影响

EFFECTS OF ADDITIVE VAPOR ON ABSORPTION OF WATER VAPOR INTO AQUEOUS LITHIUM BROMIDE BY DIFFERENT ADDING METHODS

选取分子中含5～10个碳原子的15种醇类物质作为添加剂,进行溴化锂溶液吸收水蒸汽的静态池实验.实验分别采用了直接气相添加和在冷剂水中添加两种添加方式.直接气相添加实验结果表明,一些添加剂(其中包括正辛醇和异辛醇)仅以气态形式作用于溴化锂溶液表面时同样可以对溶液吸收水蒸汽产生显著的强化作用,另一些物质以气相添加时的强化效果与液相添加时有着很大的差别;添加剂在冷剂水中低温蒸发的气相添加实验表明,添加剂在冷剂水中的蒸发情况对气相添加的效果产生影响。

The effects of 15 kinds of five to ten-carbon alcohols on absorption of water vapor into aqueous LiBr solution are determined. Additives are added by vapor phase in two ways： additive vapor is produced in absorber at room temperature and additive is added into refrigerant water in the evaporator. Experimental results by first adding method show that some additives including 1-octanol and 2EH can enhance absorption as good as the effect by adding them into aqueous lithium bromide （liquid adding method） while for some other additives the effect is different with the liquid adding method. Some additives added into refrigerant water also can enhance absorption strongly, but the enhancement effect is depended on the evaporating station of additive in evaporator.