Procedure for the reprocessing of used lubricating oils
    1.
    发明授权
    Procedure for the reprocessing of used lubricating oils 失效
    二手润滑油后处理程序

    公开(公告)号:US4255252A

    公开(公告)日:1981-03-10

    申请号:US23059

    申请日:1979-03-22

    CPC分类号: C10M175/0016

    摘要: A method for reprocessing used lubricating oils is disclosed wherein the oil is dried, treated with finely dispersed sodium metal at elevated temperature, the remaining free or organically bound metal is decomposed by means of an active hydrogen containing compounds, followed by distillation of the oil for recovery.

    摘要翻译: 公开了一种用于后处理使用的润滑油的方法,其中油被干燥,在高温下用细分散的金属钠处理,剩余的游离或有机结合的金属通过含活性氢的化合物分解,随后蒸馏用于 复苏。

    Process for recycling of used lubricating oils
    5.
    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。

    Setting retarder
    7.
    发明授权
    Setting retarder 失效
    设置缓凝剂

    公开(公告)号:US4124406A

    公开(公告)日:1978-11-07

    申请号:US723174

    申请日:1976-09-14

    IPC分类号: C04B24/06 C04B11/14

    CPC分类号: C04B24/06

    摘要: Gypsum plaster having a delayed setting time is made by adding a mixture of mesotartaric acid and l-tartaric acid or d,l-tartaric acid or a mixture of l-tartaric acid and d,l-tartaric acid to the gypsum plaster.

    摘要翻译: 具有延迟凝固时间的石膏膏通过将石脑磺酸和1-酒石酸或d,1-酒石酸或1-酒石酸和d,l-酒石酸的混合物的混合物加入到石膏膏中来制备。

    Process for the precipitation of heavy metal ion-polycarboxylate
complexes
    9.
    发明授权
    Process for the precipitation of heavy metal ion-polycarboxylate complexes 失效
    沉淀重金属离子 - 多羧酸盐络合物的方法

    公开(公告)号:US3956121A

    公开(公告)日:1976-05-11

    申请号:US522799

    申请日:1974-11-11

    摘要: A process for precipitating heavy metal ion-polycarboxylate complexes from solution, said process comprising adding to a solution containing at least one of said complexes an aqueous solution of a water soluble aluminum salt, the anion of which does not form any water soluble complexes with said heavy metal ions to be precipitated or optionally such anion-heavy metal complexes having a stability constant, expressed as their decadic logarithm, of less than 2; wherein 0.9 to 1.8 moles of aluminum ions are employed per equivalent of polycarboxylate; and adjusting the pH of the resulting reaction mixture to about 6.5 to about 9.0 with an alkali metal carbonate.

    摘要翻译: 一种从溶液中沉淀重金属离子 - 多羧酸盐络合物的方法,所述方法包括向含有至少一种所述络合物的溶液中加入水溶性铝盐的水溶液,水溶性铝盐的阴离子不与所述复合物形成任何水溶性络合物 要沉淀的重金属离子或任选的具有小于2的具有稳定常数(表示为十进制对数)的阴离子 - 重金属络合物; 其中每当量的聚羧酸盐使用0.9至1.8摩尔的铝离子; 并用碱金属碳酸盐将所得反应混合物的pH调节至约6.5至约9.0。