精馏

Firstly, MESH equation was established by means of phase equilibrium of each component. Simultaneously, with a view to the strong nonideal liquid phase of alcohol－water－benzene system, M－H EOS state equation was used to determine gas phase fugacity and heat enthalpy. And relaxation method was applied to compute the composition of ternary components on each theoretical tower plate.

首先针对恒沸精馏塔利用各组分相平衡关系建立MESH方程，同时考虑到乙醇－水－苯体系具有很强的非理想性的液相，利用马丁－侯81型状态方程确定气相逸度和焓，采用松弛法计算得到三元组分在各层理论塔板上的组成情况。

Zinc oxide raw materials and zinc oxide ores, containing high fluorine, chloride and iron, can 't be treated to produces electrowinned zinc by routine process. High-purity zinc using in non-mercury zinc powders is prepared only by using vacuum distillation or rectify process from zinc of the zero grade.

本文针对目前氟、氯、铁等杂质元素高的氧化锌物料、氧化锌矿常规方法难以处理以及无汞合金锌粉用高纯锌必须由0号锌用真空蒸馏或精馏法生产的问题。

The main products: large acid-base tank, stainless steel fermentation tank, concentrated liquor cans, seeds, cans, nitrogen tank, condensate, water, automatic air pressure to water tanks, Jinqi cans, vacuum furnace, distillation columns, vacuum tower, the reactor , Condenser, deaerator, air filters, buffers, water collection and bellows heat exchanger, U-tube heat exchanger, such as titanium tetrachloride heater.

主要产品：大型酸碱贮罐、不锈钢发酵罐、母液浓缩罐、种子罐、氮气贮罐、凝水罐、自动气压给水罐、浸漆罐、真空炉、精馏塔、减压塔、反应器、冷凝器、除氧器、空气过滤器、缓冲器、集水器及波纹管换热器、U型管换热器、四氯化钛加热器等。

In the refinery, steam jet vacuum pump with liquid ring vacuum pump combination for refinery distillation column system.

在炼油厂，水蒸汽真空喷射泵同液环泵组合用于炼油厂的减压精馏塔系统。

Tall oil is a major by-product in sulfate or Kraft pulping process,from which high-grade tall oil as well as its distillation products tall oil rosin and tall oil fatty acid are prepared as important materials for fine chemicals.

木浆浮油是硫酸盐法制浆造纸重要的副产品，高品质木浆浮油及其精馏产品浮油松香、浮油脂肪酸等都是重要的精细化工原料。

The slant-hole tray was applied to the technical innovation of vinyl acetate distillation column.

采用复合斜孔塔板对醋酸乙烯精馏塔进行了技术改造。

The experimental study for purification of peach aldehyde by vacuum batch distillation,as well as the heat sensitivity of the product,is carried out.

采用真空间歇精馏技术对桃醛原料进行分离试验，考察了桃醛的热敏性，确定了安全的操作温度范围和适宜的操作方法。

The tall oil from waste fluid in papermaking,first purified by reduced pressure distillation , then some composite additives were added.

使用造纸废液中塔尔油，经减压精馏纯化，适当加入复合添加剂，制得优质醇酸树脂，从而制备出性能较好的工业底漆。

The compound tray holds excellent features , it has been successfully used in industry namely , methane alcohol ethanol , methyl aeetyl distillations and etc It is also expected to have a broad prospect for applications in other chemical industry field In this paper , many studies are concerned with the gas liquid duallowing the hole and oscillating regulation of the compound tray by experiments These studies will provide theoretical and experimental foundation for the design and improvement of the compound tray The main part of which is a 500 mm inner diameter three compound trays column , serving as a hydrodynamic model , the system air ?

复合塔板以其优良的性能，在甲醇、乙醇和丙酮等生产精馏装置中获得了成功的应用，并在其它化工生产领域有着广泛的应用前景。本论文旨在通过实验研究复合塔板上气液穿孔流动及波动波动规律，为复合塔的设计和结构改进提供理论和实验依据。实验是在一塔径500mm的冷模塔内，以空气—水为物系，在常压下进行实验。

Especially for complicated multicomponent distillation processes, such as three-phase distillations in this work, the equilibrium model will lead to a significant error in the distillation modelling.

实际精馏过程往往很难真正达到汽液平衡状态，因此Murphree板效率和等板高度概念常用于修正平衡模型计算中的非理想特性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。