• Meanwhile the refining process was improved, using crystallization from petroleum-benzene instead of high vacuum distillation. The process was simplified for the benefit of industry production.

    同时改进了精制工艺石油醚-苯进行结晶代替真空蒸馏简化工艺,有利于工业化生产

    www.chemyq.com

  • The refined product with high purity is obtained by vacuum distillation of crude benzal chloride.

    将制得的叉二进行真空精馏得到纯度精品;

    chazidian.com

  • The new liquid distributor has been already applied in revamping of the washing zone in crude vacuum distillation tower with high temperature, small flowrate, dirt and easy-coking material.

    新型液体分布器应用温度、液量、物系脏、易结焦原油减压蒸馏洗涤改造

    dict.cnki.net

  • The three main methods for high purity zinc preparation, including electrolytic method, vacuum distillation, zone refining, are summarized and compared in this paper.

    本文目前高纯三种主要制备方法(解法、真空蒸馏法区域熔炼法)进行了综述比较。

    www.dictall.com

  • Mixed diisopropyl benzene was chose as the materials to compose high purity resorcinol by shape selective catalysis decomposition and vacuum distillation.

    以混合二异原料催化裂解减压蒸馏,制备了含量的间二异丙苯。

    www.fabiao.net

  • The invention can be used as a heating vacuum reaction furnace which can carry out the continuous production or a vacuum distillation furnace. The production efficiency is high.

    它既作为一种可连续生产加热真空反应炉可以用作真空蒸馏,且生产效率较高

    ip.com

  • The results showed that the heavy metal cadmium could be effectively separated by vacuum distillation to produce high purity cadmium (>99%).

    实验结果表明利用真空蒸馏可以实现镍电池中镉与其它金属有效分离,并得到纯度大于99%的金属镉;

    dict.cnki.net

  • The molecular distillation (short-path distillation or unobstructed distillation) is a special separation technique of liquid-liquid and a special distillation technique under the high vacuum.

    分子蒸馏种在真空进行特殊蒸馏技术

    www.chemyq.com

  • Analyze features of corrosion of pipeline for high acidic crude oil of atmospheric and vacuum distillation unit, probe major principle for selection of piping material.

    分析加工原油减压蒸馏装置管道腐蚀特点探讨其主要管道选材原则

    www.chemyq.com

  • The vacuum membrane distillation units, the device and the method have the advantages of high heat recovery rate, energy saving, high equipment integration degree, low operation cost and the like.

    发明减压蒸馏组件单元及其装置方法具有回收率节能设备集成化程度高、操作成本低等优点。

    ip.com

  • A vacuum distillation method and a vacuum distillation device are disclosed, for inhibiting frothover in a distillation boiler and recycling high pure solvent in free of impurities.

    提供一种减压蒸馏方法以及减压蒸馏装置抑制蒸馏突沸,回收不含杂质的纯度溶剂

    ip.com

  • A vacuum distillation method and a vacuum distillation device are disclosed, for inhibiting frothover in a distillation boiler and recycling high pure solvent in free of impurities.

    提供一种减压蒸馏方法以及减压蒸馏装置抑制蒸馏突沸,回收不含杂质的纯度溶剂

    ip.com

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