• Do your distillation under high pressure or low pressure.

    高压低压进行提纯

    youdao

  • This is important because a high pressure drop would mean that more energy is required to drive the vapour up the distillation column.

    一点重要,因为如果压力下降意味着需要更多能量推动蒸气上升。

    youdao

  • The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reduced pressure distillation, precipitation method, is discussed.

    探讨直接加热法、直接水蒸汽间接水蒸汽法、减压蒸馏、酒精沉淀五种回收方法优缺点

    youdao

  • It is reveal by GC analysis that the purity of the TMP, treated by reduced pressure distillation and recrystallization in acetic ester, approximates to that of the reagent grade TMP.

    GC分析结果表明采用减压蒸馏乙酸乙结晶并用方法精制TMP纯度接近试剂TMP。

    youdao

  • The distillation conditions including overhead pressure, reflux ratio for the recovery of 1,2- propylene glycol were studied.

    本文还研究精馏一些操作条件1,2-二醇精制过程的影响(塔顶压力回流比等)。

    youdao

  • Veratryl alcohol was synthesized through the reduction of sodium borohydride from veratraldehyde with isopropanol as solvent, followed by solvent extraction and distillation under reduced pressure.

    藜芦醛为主要原料、异溶剂氢化还原、溶剂萃取、减压精馏得到产物藜芦醇。

    youdao

  • This paper introduced a new type and special structured vacuum pump unit suitable for dry type reduced-pressure distillation.

    本文介绍适用减压蒸馏的特殊结构真空设备

    youdao

  • In the low pressure distillation columns, the variation of pressure may severely affects the operating performance of the distillation processes.

    低压精馏塔中,塔内压力变化严重影响精馏塔操作特性

    youdao

  • An Introduction to a closed water-saving equipment by recycle water, it may resolve the problem of water waste resulted from distillation, circumfluence, negative-pressure filtration, etc.

    介绍一种解决化学实验室因蒸馏、回馏、减压抽等基本操作引起,大量冷却水流失问题的封闭式循环节水装置

    youdao

  • The reduced pressure distillation experiment on the liquid paraffin was done and the Engler distillation curve was obtained.

    进行石蜡减压蒸馏实验得到了恩氏蒸馏曲线

    youdao

  • The standard method with atmospheric pressure correction for distillation test of coking benzene products is studied. The distillation range of coking benzene products is defined.

    研究焦化产品蒸馏试验气压补正标准方法,对焦化苯类产品范围进行了定义

    youdao

  • The high-purity MPC standard sample was obtained by reduced pressure distillation and the removal of minor phenol with dilute sodium hydroxide solution.

    反应产物减压精馏、碱洗、水洗、干燥等精制处理,得到了纯度较高的M PC标准

    youdao

  • Pressure distillation used in acetaldehyde production can save energy markedly.

    加压蒸馏技术应用乙醛生产,节能效果显著。

    youdao

  • With very good air-tightness, can conduct reaction under negative pressure and easily assemble distillation, reflow device.

    好的气密性可在负压反应方便组装成蒸馏回流装置

    youdao

  • A new hydration process of water and ethylene oxide by reaction distillation to produce glycol in high pressure was studied.

    反应蒸馏法水合环氧乙烷生产乙二醇工艺进行了模拟。

    youdao

  • The article describes a new PSA (Pressure Swing Adsorption) gas separation process for removing and retrieving the valuable components from PVC fractional distillation tail gas.

    主要介绍吸附气体分离技术治理PVC分馏尾气回收其中有效组分工艺

    youdao

  • In order to study the evaporation of ethanol-gasoline, experimental investigation had been carried out on distillation range and saturated steam pressure with different ethanol content.

    考察乙醇体积分数乙醇汽油饱和蒸汽的影响,对乙醇汽油的蒸发进行研究

    youdao

  • The process flow and production practice of air-distillation and reduced-pressure distillation for tar in Jigang coking plant are introduced.

    介绍了济钢焦化厂焦油常、减压蒸馏工艺流程生产实践

    youdao

  • Garlic plant volatile was extracted by steam distillation under reduced pressure, and the chemical components were determined by GC-MS analysis.

    采用减压水蒸气蒸馏法提取出蒜苗挥发物GC - MS法分析鉴定化学成分

    youdao

  • The headspace gathered more ester compounds in aroma composition than that of reduced pressure distillation.

    空法富集的芳香成分酯类化合物含量较减压蒸馏富集法高。

    youdao

  • Existing methanol 4-tower distillation process mainly includes pre-distillation column, pressurize distillation column, normal pressure distillation column and recovery column.

    现有甲醇四塔精馏工艺流程主要包括精馏塔加压精馏塔、常压精馏塔以及回收

    youdao

  • The oil is extracted with suitable solvent from the oil treated with homogenizer. After removing the solvent by reduced pressure distillation, the oil is obtained finally.

    本文使用分散机浆,利用溶剂提取油料中的油脂,再减压旋蒸除掉溶剂,得到油脂。

    youdao

  • The cause of packing efficiency loss and "efficiency hump" at high-pressure distillation is summarized and analyzed on the basis of the most recently experimental results.

    介绍了填料高压蒸馏领域的最新研究成果 ,从压力对体系物理化学性质、流体流动分布影响出发 ,分析了压力填料塔高压蒸馏的影响。

    youdao

  • Well-tried function of DMC as an additive on gasoline, covering its octane number, oxygen content, calorific value, vapor pressure, distillation range, freezing point, solubility in water etc.

    就碳酸二甲酯汽油调合辛烷值含量热值蒸汽程、凝固点水性等性质的影响进行了研究。实验表明,DMC作为汽油添加剂具有良好的前景。

    youdao

  • Well-tried function of DMC as an additive on gasoline, covering its octane number, oxygen content, calorific value, vapor pressure, distillation range, freezing point, solubility in water etc.

    就碳酸二甲酯汽油调合辛烷值含量热值蒸汽程、凝固点水性等性质的影响进行了研究。实验表明,DMC作为汽油添加剂具有良好的前景。

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定