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- Piperazine was separated from ethylenediamine byproduct polyethylene polyamines mixture by refrigeration and azeotrope distillation. 通过冷冻、共沸蒸馏,从多乙烯多胺混合物中分离出哌嗪。
- In order to separate n-hexane-ethyl acetate azeotrope,batch azeotropic distillation was often used and the entrainer played a key role in the process. 正己烷和乙酸乙酯形成最低共沸物,采用间歇共沸精馏方法分离回收时,共沸剂的选择和用量直接影响实验效果。
- An azeotrope former, toluene, is added to the phenol-water mixture to form a new much easier separation azeotrope to seporate phenol-water mixture completely by azeotropic distillation method... 为此,在苯酚-水物系中加入了一种共沸剂甲苯,用共沸精馏法实现了苯酚-水混合物的分离。分离后的水可以直接送到生化装置进行处理,苯酚回收供反应系统循环使用。
- The principle and methods of azeotropic distillation drying as well as the choice of displacers were discussed. 探讨了共沸蒸馏置换干燥的基本原理、操作方法和置换剂的选择原则。
- In this article,multiple steady states in ternary homogeneous azeotropic distillation have been studied. 研究三元均相恒沸精馏多定态现象,进行含有多个精馏区域的三角形相图的多定态分析。
- Then studies the mechanisms of film evaporation and azeotropic distillation, in order to get the input variables. 随后,对薄膜蒸发和共沸精馏的机理进行了分析,并结合这两个装置的工艺流程,得到了影响输出的主要输入变量。
- Atmospheric distillation,vacuum distillation and azeotropic distillation processes were used to separate 1,2-dichloropropane from the waste liquor. 采用常压精馏、减压精馏、共沸精馏工艺分离环氧丙烷生产废液中的1,2-二氯丙烷。
- According to process design of azeotropic distillation column of MTBE plant, Commercial application of JCPT tray is introduced. 结合燕化公司MTBE装置扩能改造共沸蒸馏塔的工艺设计,介绍了JCPT塔板的工业应用情况。
- Besides,the tower pressure should be under proper control for both azeotropy distillation and multiple-effects extraction distillation. 吸附法能耗低,把多效精馏和吸附进行热耦合,节能效果十分显著;
- Aspen Plus simulation of different ternary azeotropic distillation system is used to check the feasibility of splits and product composition regions. 用Aspen Plus对不同的三组分共沸系统中跨越精馏单元边界的分离进行模拟分析,模拟结果与上述分析结果一致。
- Water in the precursor was removed by azeotropic distillation with n-butyl alcohol as an entrainer,and then it was dried and calcined to get nanocrystalline ceria. 用碳酸氢铵做沉淀剂,采用化学共沉淀法制备纳米氧化铈的前驱体,并以正丁醇为共沸剂经过共沸精馏除去前驱体中的水分,然后再烘干、煅烧制备了纳米氧化铈晶体。
- The production technology of biodiesel from high acid value waste oil with azeotropic distillation solvent-esterification and transesterification was studied. 研究以高酸值废弃油脂为原料,采用共沸蒸馏溶剂酯化-转酯化法制备生物柴油的技术。
- Studies indicate that chymist coprecipitation annexed azeotropic distillation can better prevent from hard-agglomeration and obtains homodisperse nanoparticle. 研究表明,在共沉淀法中辅以共沸蒸馏过程,可以较好地防止粉体的硬团聚,得到分散均匀的纳米级超细粉体。
- Aspen Plus simulation of several quaternary azeotropic distillation systems is used to check the feasibility of splits.The results are in good agreement with the analysis. 用Aspen Plus对多个四组分共沸系统中跨越精馏单元边界的分离进行模拟分析,模拟的结果与上述分析结果一致。
- Dynamic accumulative operation was feasible in binary batch azeotropic distillation, and operation by two tanks in turns was feasible in ternary batch azeotropic distillation. 因此,二元间歇恒沸精馏宜采用动态累积操作,三元间歇恒沸精馏宜采用双塔釜交替式操作。
- The energy consumption of azeotropy distillation was low but its energy-saving effects were inferior to that by multiple-effects extraction distillation. 节能型乙醇脱水制备无水乙醇的方法主要有4种:共沸精馏法、萃取精馏法、吸附法和膜分离法。
- By tint of a kind of computer language MATLAB,the binary parameters is correlated,stability of original liquid is checked, liquid-phase splitting calculation and simulation of heterogeneous azeotropic distillation are performed. 利用MATLAB语言强大的数值计算功能,对文中参数的拟合、液相稳定性测试、液液相平衡分离、模拟计算的程序进行了编写。
- We may purge water by distillation. 我们可以用蒸馏法使水净化。
- Technology of ternary azeotropic distillation for making anhydrous ethanol from ternary azeotropic system of ethanol,benzene and water(EBW) was simulated by CHEMCAD simulation software. 用CHEMCAD软件对乙醇、苯和水三元恒沸体系生产无水乙醇的工艺进行了模拟。
- By controlling the hydration of alkoxide, and with n-butanol azeotropic distillation and ethanol rinsing methods, the preparation process of superfine titania powder was investigated in detail. 利用控制醇盐水解的方法,分别采用正丁醇共沸蒸馏和乙醇洗涤这两种工艺,详细研究了超细二氧化钛粉体的制备过程。