| Property of Special Liquid Paraffin for Determination of High Temperature Stability of Insoluble Sulfur |
| Received:August 30, 2018 Revised:August 30, 2018 |
| DOI：10.12136/j.issn.1000-890X.2019.08.0627 |
| Key Words: insoluble sulfur；high temperature stability；liquid paraffin；nitrogen content |
| Author Name | Affiliation | E-mail | | ZHOU Jiangong* | China University of Petroleum（East China） | | | WANG Yanzhen | China University of Petroleum（East China） | zjgzzu@163.com | | SONG Chunmin | China University of Petroleum（East China） | | | DUAN Hongling | China University of Petroleum（East China） | | | ZHU Yuqing | China University of Petroleum（East China） | zjgzzu@163.com |
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| Abstract: |
| The influence of the properties of liquid paraffin used for the determination of the high temperature stability of insoluble sulfur (is) on the determination results of the high temperature stability of is was studied. The results show that the maximum difference of the stability of is at 105 ℃ and 120 ℃ measured by different liquid paraffin is about 10% and 30% respectively; The nitrogen content of liquid paraffin has a great influence on the determination result of is high temperature stability, the distillation range and viscosity have a small influence, and the acidity basically has no influence. It is suggested that the nitrogen content of liquid paraffin used for determination is less than 1 μG·g-1, the final boiling point is lower than 450 ℃, and the viscosity at 40 ℃ is lower than 15 mm 2·s-1. |
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