【作者】 李真；

【导师】 贾绍义；

【作者基本信息】 天津大学 ， 化学工程， 2006， 硕士

【摘要】 为研究磁场对中药制剂溶煤回收过程中液-液相平衡的影响,本文在不同磁感应强度的钕铁硼永磁场中,选用水、乙醇、正丁醇、乙酸丁酯等物质进行磁化处理,研究了磁场对物质的粘度和表面张力的影响,并在磁场作用下,对正丁醇-水、乙酸丁酯-水、乙醇-水-苯物系的液-液相平衡进行了研究。研究结果表明,外加磁场降低了乙醇、正丁醇、乙酸丁酯的粘度,以及水、乙醇、正丁醇、乙酸丁酯的表面张力,但磁化后水的粘度有所增加。磁场的作用使正丁醇-水和乙酸丁酯-水物系的液-液相平衡发生了变化,且呈非线性波动,从整体上看,外加磁场使上述物系中物质的相互溶解度增大,2#磁场对物系液-液相平衡的影响最大;磁场对乙醇-水-苯物系的相平衡影响取决于磁感应强度的大小,磁化效果随磁感应强度和溶液组成的变化呈非线性波动。本文通过对实验数据的回归,提出了包含磁感应强度的永磁场条件下的液-液相平衡方程以及磁场条件下粘度、表面张力的拟合方程,并对回归结果进行了分析,证明了方程的可靠性。本文较为系统地分析了分子内部及分子间的各种作用力和磁场之间的关系,从力学的角度,探讨了永磁场对液-液相平衡的影响机理,并据此对实验现象进行了解释。更多还原

【Abstract】 In this paper, in order to determine the influence from magnetic fields in Chinese medicine menstruum reclaims, with different magnetic flux intensity B magnetic fields, water, ethanol, butanol, butyl acetate were employed to determine the influence from magnetic fields to the matters’viscidity and surface tension, and to the liquid-liquid balance of butanol-water system and butyl acetate-water system and ethanol-water-benzene system. It indicates that magnetic fields can decrease the intensities of ethanol, butanol, butyl acetate, and the surface tensions of water, ethanol, butanol、butyl acetate. But the intensities of water were increased. Also, the magnetic fields can change the liquid-liquid balances of butanol-water system and butyl acetate-water system with a non-linear inclination. All in all, extra magnetic fields, especially the 2# magnetic field, can augment the solubility of the two systems; the influence from magnetic fields to the liquid-liquid balance of ethanol-water-benzene system mainly depends on the values of magnetic induction intensity, and the effects fluctuate with a non-linear inclination.Based on experiment data, the equation of liquid-liquid equilibrium including magnetic flux density B and the equations of viscidity and surface tension are put forward. At the same time, dependability is proved by analyzing the fitted results.In this paper, the relations between magnetic field and internal force of molecules or force between molecules are also expatiated systematically. From the point of view of mechanics, the magnetization mechanism of permanent magnetic fields on the liquid-liquid equilibrium is discussed, and the experiment phenomena are explained by it.更多还原