purification of tar or bitumenhaltigem sulphur with oleum.

• 1. 一种煤焦油沥青的制法及含有该煤焦油沥青的沥青的制法 [P] . 中国专利： CN102533303B . 2015.07.29
• 2. 一种煤焦油沥青的制法及含有该煤焦油沥青的沥青的制法 [P] . 中国专利： CN102533303A . 2012-07-04
• 3. process for purification of tar or bitumenhaltigem sulfur. [P] . 瑞士专利： CH163270A . 1933-08-15

  机译： 焦油或沥青烟碱硫的纯化方法。

• 4. process for purification of carbonaceous impurities by means enthaltendem sulphur oleum. [P] . 瑞士专利： CH164194A . 1933-09-30

  机译： 焓焓发烟硫酸提纯碳质杂质的方法。

• 5. An improved process for working up spent gas-purification material to pure tar-free sulphur and tar-free purification material capable of being used again [P] . 英国专利： GB342611A . 1931-02-05

  机译： 将废气净化材料处理为纯无焦油硫和可再次使用的无焦油净化材料的改进方法

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• 6. High-Purity Purification of Indole Contained in Coal Tar Absorption Oil by Extraction-Distillation-Crystallization Combination [O] . Su Jin Kim 2014
• 7. Reprocessing of Waste Sulphuric Acid Obtained from the Refining of N-Paraffins and/or Other Hydrocarbons with Oleum. Compendium on Low- and Non-Waste Technology. Addendum [R] . 1983

• 1. The Origin of Tar AI-Say＇ed and Tar AI-Najaf, Karbala-Najaf Vicinity, Central Iraq [J] . Varoujan K. Sissakian ,Mawahib F. Abdul Jab＇bar ,Nadhir A. Al-Ansari . 土木工程与建筑 . 2015,第004期
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