Research for the Separation Method of Ethyl Acetate-Isopropanol Azeotropic Mixture 乙酸乙酯&异丙醇共沸物分离方法研究
The effects of different operating parameters such as solvent, reflux ratio, overall reflux time, composition, ratio of water to azeotropic mixture were investigated. 考察了萃取剂、回流比、全回流时间、共沸物组成、溶剂与混合物的质量比等因素对萃取精馏分离甲醇-丙酮共沸体系的影响。
Some researches have been done on plate evaporator with pure refrigerant or near azeotropic mixture, but not with non-azeotropic mixture. 目前,针对单工质或近共沸工质的板式蒸发器研究已有开展,但对于非共沸工质的尚未见报道;
Azeotropic Distillation for Separation of Phenol-Water Mixture 苯酚-水混合物的共沸精馏分离
The results showed that the relative volatility of ethanol-water azeotropic mixture increased obviously as solvent ratio increased and the slop cut of water-glycol lasted a very short time during which the temperature at the top of the column rose sharply. 实验得出,乙醇水体系的相对挥发度随溶剂比的增加而显著增大,水乙二醇过渡馏分段持续时间很短,在该段时间会出现塔顶温度急剧跃升的现象;
Design of composition adjustable device for non-Azeotropic ternary refrigerant mixture 三元非共沸混合制冷剂组成调节装置的设计研究
Azeotropic Distillation for Formic Acid-Acetic Acid-Water Mixture 水-甲酸-乙酸混合物的恒沸分馏
The process of the solvent recovery operation during batch extractive distillation for the separation of ethanol-water azeotropic mixture using glycol as the solvent was studied experimentally. 为了解乙醇-水共沸混合物分批萃取精馏中溶剂回收操作的特有的现象和规律,以乙二醇为溶剂,进行了溶剂回收的实验研究。
On the other hand, studies show that non azeotropic refrigerant mixture ( NARM) has a higher COP when it is used in vapor compression refrigeration cycle. 研究表明,非共沸混合制冷剂(NARM)在用于蒸汽压缩制冷循环中时可表现出较高COP。
Selection of Non-Azeotropic Mixture Fluids for Heat Circuit 热环非共沸循环工质的优选
In the production of chemical and pharmaceutical industry, many kinds of solvents are often used. After have been used, these solvents need to be separated and reused. Many of these solvents are azeotropic mixture. 在化工和制药行业的生产过程中,大量的溶剂使用后相混合,需要回收利用,这些混合溶剂大多数是难以分离的共沸物。
For both the formation of azeotropic and the low relative volatility ( volume fraction of components from 0 to 100%) of the mixture, the efficient separation of benzene and cyclohexane has become academic research topic. 由于苯与环己烷的相对挥发度在全组成范围内均很低且形成共沸物,高效地分离苯-环己烷成为学术界研究的热点课题。
As there exists azeotropic composition for high concentration ethanol/ water mixture, the separation of ethanol/ water based on distillation and ethanol dehydration consume a major part of energy in an ethanol production process. 具有较高乙醇浓度的乙醇/水混合物存在共沸组成,因此基于精馏的乙醇-水的分离及脱水在乙醇工业生产的能耗中占有很大的比例。