查询词典 distillation

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。

Gel co-precipitation method and heterogeneous azeotropic distillation technics were used in the preparation of ZrO2 and Al2O3 composite powder.

用溶胶共沉淀法辅以共沸蒸馏法工艺制备ZrO2/Al2O3复合粉体，研究了pH值和锆与铝的离子比对复合粉体和用这种复合粉体制备的瓷体的力学性能的影响。

The material balance of technology and one hundred thousandtone stages is accomplished, laying a foundation for industrial experiments of bisphenol A ofpolycarbon-stage with HPA method. The characteristics of the process are shown as follows. Thefirst, using reaction distillation technology to make water and toluene to reach azeotropy andremove them promptly, the reaction rate is increased.

绘制了带控制点的流程图，建立了流程优化模拟计算的数学模型并编制了计算机程序，通过输入工艺设计要求，应用该程序很快就可以完成整个流程的模拟计算，应用该程序也可进行整个流程的优化设计计算。

Keywords azeotropy;pressure-swing distillation;process simulation;ethanol-benzene;Aspen Plus

共沸； 变压精馏；过程模拟；乙醇苯； AspenPlus

The author is in half minim of GB/T5009.44-2003 undertakes reforming on azotic law foundation surely, use triumphant family name to decide azotic appearance to undertake distillation titrate, undertook reclaiming at the same time of rate, precision determine and determine with GB law the contrast of the result.

笔者在GB/T5009.44-2003半微量定氮法基础上进行改良，利用凯氏定氮仪进行蒸馏滴定，并同时进行了回收率、精密度的测定以及和国标法测定结果的对比。

The extractive distillation process of benzothiophene was simulated using the software of Aspen plus.

采用Aspen plus软件模拟计算硫茚的萃取精馏，并通过了实验的校核。

The dehydration technology of bischofite by butanol complexation distillation was studied by such methods as X-ray diffraction and elementary analysis.

摘 要：采用X射线衍射及元素分析方法研究了水氯镁石的丁醇络合蒸馏脱水工艺。

The results show that the dehydration efficiency improves with the increase of the amount of butanol during the continuous distillation dehydration process;the first four coordinated water molecules in bischofite can be more easily taken away than the last two coordinated water molecules,especially the last one;the ultrasonic pretreatment of the bischofite bu...

研究结果表明：在连续蒸馏法脱水过程中，水氯镁石的脱水率随着丁醇用量的增加而提高；水氯镁石最初4个结晶水分子较容易脱除，后2个结晶水特别是最后1个结晶水难以脱除。

Therefore, butoxy in n_butanol can be adsorbed chemically on the surfaces of the tourmaline particles in the process of azeotropic distillation, which can effectively prevent the formation of liquid_bridge between the particles of tourmaline and avoid the hard aggregation in the drying process.

正丁醇中的丁氧基在共沸蒸馏过程中在电气石颗粒表面可取代羟基，产生化学吸附，能有效防止液桥的产生，阻止干燥过程中超细粉末的硬团聚。

Methods Essential oil from the fresh Canarium album Raeusch leaves was extracted by steam distillation and were analyzed by gas chromatography-mass spectrometry.

方法采用水蒸气蒸馏法提取新鲜橄榄叶的挥发油，经气相色谱-质谱联用仪分析，归一化法测得各组分的相对含量。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。