To meet the requirement of crystallization separation process for para-acetaminophenylacetate ethyl, molecular distillation was firstly used to separate the isomer.
为满足对乙酰氨基苯乙酸乙酯后续结晶分离工艺的需要，将分子蒸馏技术首次应用于同分异构体的预分离。
The new separation technology of the high-purity anethole from star anise oil was studied, especially on the optimum separation conditions of freezing crystallization and vacuum rectification.
研究了从八角茴油中分离高纯度茴脑的生产工艺，探讨了冷冻结晶及精馏操作的最佳工艺条件。
A simulated annealing method is used to study the micro phase separation and crystallization in cylinder-forming semicrystalline diblock copolymers.
利用模拟退火方法研究非对称半结晶两嵌段共聚物熔体分别在弱分离和强分离条件下的结晶过程。
The practice shows that the technology has advantages of rapid crystallization rate, small reactor volume, and rapid solid-liquid separation. It shows a broad prospect for application.
实践表明，该技术结晶速度快、反应器容积小、固液分离快，具有较好的应用前景。
After column chromatographic separation, re-crystallization treatment and supercritical fluid precipitation treatment, the purity of lutein is improved.
粗提物经柱层析分离，重结晶，再经过超临界流体沉淀处理后，可提高叶黄素的纯度。
The continuous suspension crystallization process for xylene separation was optimized by calculation of solid-liquid phase equilibrium, material balance and energy balance.
采用混合二甲苯二组分物系的固液相平衡方程及物料衡算和热量衡算方程对混合二甲苯连续悬浮结晶工艺进行模拟计算。
The effects of solvent, temperature, additive and separation time on the refinement process of crude anthracene by using emulsion-crystallization were reported.
采用乳化结晶法，研究了粗蒽精制过程中溶剂、温度、助剂及分离时间的作用。
Crystallization is a separation technology, the formation of crystallization needs to finish in strict conditions.
结晶是一种历史悠久的分离技术，结晶的形成需要在较严密的条件下进行。
The crystallization and separation of ferrous sulfate by-product in the production of sulfate TiO_2 are essential processes.
硫酸法生产钛白时的副产物硫酸亚铁的结晶和分离是必不可少的工序。
The crystallization and purification comprises crystallization, solid-liquid separation, dissolution, pressure filtration and so on.
结晶提纯包括结晶、固 液分离、溶解和压滤等工艺。
Sodium chloride which content was more than 99.1% could be got from separation salt by adding brine crystallization method.
分离盐经兑卤结晶工艺处理，可得含量大于99.1%的氯化钠。
This paper summarizes research and development on crystallization process, particularly for separation of some nickel salts from their solution.
综述了近年来国内外溶液结晶的基础与应用研究的进展，以及几种常见镍盐的结晶生产工艺现状。
Melt crystallization is not only used in the separation of fine chemicals and isomers but is also used in the production of large output of organic chemicals such as bisphenol a and naphthalene.
熔融结晶精制技术目前不仅在精细化工产品和同分异构体的分离中得到了推广应用，而且在大吨位的有机化学品，如双酚a、萘等的生产中也得到了应用。
An easy method of rare earth separation-acid fractional crystallization was put forward.
提出了一种利用酸分离稀土的简便方法———酸分级结晶法。
An easy method of rare earth separation-acid fractional crystallization was put forward.
提出了一种利用酸分离稀土的简便方法———酸分级结晶法。
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