Process for recycling of used lubricating oils
    1.
    发明授权
    Process for recycling of used lubricating oils 失效
    废旧润滑油再循环的方法

    公开(公告)号:US4366049A

    公开(公告)日:1982-12-28

    申请号:US192561

    申请日:1980-09-30

    CPC分类号: B01D1/222 C10M175/0016

    摘要: The object of the invention is a process for recycling used lubricating oils. After drying and gasoline removal, the oil is distilled and then treated with sodium or sodium hydride in a finely-divided state at elevated temperature. This is followed by a further distillation. Both distillations are at temperatures below 300.degree. C., the oil fractions of low volatility being respectively distilled in a molecular distillation apparatus at below 2 mbar.

    摘要翻译: 本发明的目的是再循环使用的润滑油的方法。 干燥和汽油除去后,将油蒸馏,然后用高分子状态的钠或氢化钠处理。 然后进一步蒸馏。 两种蒸馏温度都在300℃以下,分子蒸馏装置中低挥发性的油馏分分别在2毫巴以下蒸馏。

    Method and apparatus for short-path distillation
    2.
    发明授权
    Method and apparatus for short-path distillation 失效
    短路蒸馏的方法和装置

    公开(公告)号:US4517057A

    公开(公告)日:1985-05-14

    申请号:US385236

    申请日:1982-06-04

    IPC分类号: B01D3/10 B01D3/12

    CPC分类号: B01D3/12

    摘要: In a method and apparatus for short-path, high-vacuum distillation from a liquid on plate-like evaporating surfaces from which distillable fractions evaporate and precipitate onto condensation surfaces a short distance away, the liquid is placed upon the evaporating surfaces at a temperature such that the energy required for its evaporation is taken, at least in part, from the still-unevaporated fraction of the liquid.

    摘要翻译: 在用于从板状蒸发表面上的液体进行短路径,高真空蒸馏的方法和装置中,蒸馏部分蒸发并沉淀到短距离的冷凝表面上,液体以如下温度放置在蒸发表面上: 其蒸发所需的能量至少部分地来自液体的未蒸发部分。